Glossary Of Terms 1

Front 1

A-60 Class Division

Back 1

A bulkhead or deck designed to resist the passage of smoke and flame for 1 hour, including limiting the temperature rise on the unexposed side to 180°C (325°F).

Front 2

Abandoned Audio Distribution Cable

Back 2

Installed audio distribution cable that is not terminated at equipment and not identified for future use with a tag.

Front 3

Abandoned Class 2, Class 3, and PLTC Cable

Back 3

Installed Class 2, Class 3, and PLTC cable that is not terminated at equipment and not identified for future use with a tag.

Front 4

Abandoned Coaxial Cable

Back 4

Installed coaxial cable that is not terminated at equipment other than a coaxial connector and not identified for future use with a tag.

Front 5

Abandoned Communications Cable

Back 5

Installed communications cable that is not terminated at both ends at a connector or other equipment and not identified for future use with a tag.

Front 6

Abandoned Fire Alarm Cable

Back 6

Installed fire alarm cable that is not terminated at equipment other than a connector and not identified for future use with a tag.

Front 7

Abandoned Network-Powered Broadband Communications Cable

Back 7

Installed network-powered broadband communications cable that is not terminated at equipment other than a connector and not identified for future use with a tag.

Front 8

Abandoned Optical Fiber Cable

Back 8

Installed optical fiber cable that is not terminated at equipment other than a connector and not identified for future use with a tag.

Front 9

Abandoned Supply Circuits and Interconnecting Cables.

Back 9

Installed supply circuits and interconnecting cables that are not terminated at equipment and not identified for future use with a tag.

Front 10

Abort Gate/Abort Damper

Back 10

A device for the quick diversion of material or air to the exterior of a building or other safe location in the event of a fire.

Front 11

Aboveground Storage Tank

Back 11

A horizontal or vertical tank that is listed and intended for fixed installation, without backfill, above or below grade and is used within the scope of its approval or listing.

Front 12

Aboveground Storage Tank

Back 12

A horizontal or vertical tank that is listed and intended for fixed installation, without backfill, above or below grade and is used within the scope of its approval or listing. [30A, 2008]

Front 13

Aboveground Tank

Back 13

A storage tank that is installed above grade, at grade, or below grade without backfill.

Front 14

Aboveground Tank

Back 14

A tank that is installed above grade, at grade, or below grade without backfill. [30, 2008]

Front 15

Abrasion

Back 15

The damaging effect on rope and other equipment caused by friction-like movement.

Front 16

Absolute Pressure

Back 16

Pressure based on a zero reference point, the perfect vacuum.

Front 17

Absolute Pressure

Back 17

Pressure based on a zero reference point, the perfect vacuum. [55, 2005]

Front 18

Absolute Pressure

Back 18

The total pressure being measured that equals gauge pressure plus atmospheric pressure.

Front 19

Absolute Pressure

Back 19

The total pressure in a system with reference to zero pressure. [99, 2005 (HYP)]

Front 20

Absolute Pressure

Back 20

The total pressure in a system with reference to zero pressure. (HYP)

Front 21

Absolute Temperature

Back 21

A temperature measured in Kelvins (K) or Rankines (R).

Front 22

Abuse

Back 22

Harmful behaviors and/or actions, as defined by local law, that place an individual at risk and require reporting.

Front 23

Accelerant

Back 23

A fuel or oxidizer, often an ignitible liquid, used to initiate a fire or increase the rate of growth or spread of fire.

Front 24

Acceptable

Back 24

Considered by the authority having jurisdiction (AHJ) as adequate for satisfying the goals, performance objectives, and/or performance criteria.

Front 25

Acceptable Entry Conditions

Back 25

Conditions that must exist in a space to allow entry and to ensure that employees can safely enter into and work within the space.

Front 26

Acceptable Level of Risk

Back 26

The minimum risk occurrence magnitude that is accepted by the stakeholders in the community.

Front 27

Acceptance

Back 27

An agreement between the purchasing authority and the contractor that the terms and conditions of the contract have been met.

Front 28

Acceptance

Back 28

An agreement between the purchasing authority and the contractor that the terms and conditions of the contract have been met. [1901,
2003]

Front 29

Acceptance

Back 29

An agreement between the purchasing authority and the contractor that the terms and conditions of the contract have been met. [1906,
2006]

Front 30

Acceptance Criteria

Back 30

Acceptance criteria are the units and threshold values against which a fire risk assessment is judged.

Front 31

Acceptance Tests

Back 31

In marine fire-fighting vessels, tests performed on behalf of the purchaser by the manufacturer’s representative at the time of delivery to determine compliance to the authority having jurisdiction requirements.

Front 32

Acceptance Tests

Back 32

Tests performed on behalf of or by the purchaser at the time of delivery to determine compliance with the specifications for the fire apparatus.

Front 33

Acceptance Tests

Back 33

Tests performed on behalf of or by the purchaser at the time of delivery to determine compliance with the specifications for the fire apparatus. [1901, 2003]

Front 34

Acceptor

Back 34

A charge of explosives or blasting agent receiving an impulse from an exploding donor charge.

Front 35

Access Box

Back 35

An approved secure box, accessible by the authority having jurisdiction’s master key or control, containing entrance keys or other devices to gain access to a structure or area.

Front 36

Access Control

Back 36

The monitoring or control of traffic through portals of a protected area by identifying the requestor and approving entrance or exit.

Front 37

Access Door

Back 37

A door assembly, for installation in fire resistance-rated walls or for installation in ceilings of fire resistance-rated floor-ceiling or
roof-ceiling assemblies, that is used to provide access to shafts, chases, attics, spaces above ceilings, or other concealed spaces.

Front 38

Access Floor System

Back 38

An assembly consisting of panels mounted on pedestals to provide an under-floor space for the installations of mechanical, electrical communication, or similar systems or to serve as an air supply or return-air plenum.

Front 39

Accessible

Back 39

Capable of being reached for inspection, maintenance, or removal without disturbing the permanent hull structure.

Front 40

Accessible

Back 40

Capable of being reached for inspection, maintenance, or removal without disturbing the permanent structure.

Front 41

Accessible

Back 41

Capable of being removed or exposed without damaging the building structure or finish, or not permanently closed in by the structure or finish of the building.

Front 42

Accessible

Back 42

Capable of being removed or exposed without damaging the building structure or finish, or not permanently closed in by the structure or finish of the building. [70E, 2009]

Front 43

Accessible

Back 43

Having access to but which first may require the removal of a panel, door, or similar covering of the item described. [54, 2006]

Front 44

Accessible

Back 44

Having access to but which first requires the removal of a panel, door, or similar covering of the item described.

Front 45

Accessible (Accessibility)

Back 45

A site, building, facility, or portion thereof that complies with this
Code.

Front 46

Accessible Area of Refuge

Back 46

An area of refuge that complies with the accessible route requirements of ICC/ANSI A117.1, American National Standard for Accessible and Usable Buildings and Facilities.

Front 47

Accessible (as applied to equipment)

Back 47

Admitting close approach; not guarded by locked doors, elevation, or other effective means.

Front 48

Accessible (as applied to equipment)

Back 48

Admitting close approach; not guarded by locked doors, elevation, or other effective means. [70:100]

Front 49

Accessible (as applied to equipment)

Back 49

Admitting close approach; not guarded by locked doors, elevation, or other effective means. [70, 2008]

Front 50

Accessible (as applied to wiring methods)

Back 50

Capable of being removed or exposed without damaging the building structure or finish or not permanently closed in by the structure or finish of the building.

Front 51

Accessible (as applied to wiring methods)

Back 51

Capable of being removed or exposed without damaging the building structure or finish, or not permanently closed in by the structure or finish of the building. [70, 2005]

Front 52

Accessible (as applied to wiring methods)

Back 52

Capable of being removed or exposed without damaging the building structure or finish or not permanently closed in by the structure or finish of the building. [70, 2008]

Front 53

Accessible Emission Limit (AEL)

Back 53

The maximum accessible emission level permitted within a particular class.

Front 54

Accessible (for Inspections)

Back 54

Capable of being exposed for inspection, maintenance, or repair without damage to the chimney or building structure or finish, but which may require the removal of doors, panels, or coverings using commonly available tools.

Front 55

Accessible Hazard Area

Back 55

That area made hazardous by the flame effect that is normally accessible to a person without the deliberate use of an additional means of access that is not normally in place.

Front 56

Accessible Means of Egress

Back 56

A means of egress that provides an accessible route to an area of refuge, a horizontal exit, or a public way.

Front 57

Accessible Opening

Back 57

An opening in a protected perimeter.

Front 58

Accessible, Readily (Readily Accessible)

Back 58

Capable of being reached quickly for operation, renewal, or inspections without requiring those to whom ready access is requisite to climb over or remove obstacles or to resort to portable ladders, and so forth.

Front 59

Accessible, Readily (Readily Accessible)

Back 59

Capable of being reached quickly for operation, renewal, or inspections, without requiring those to whom ready access is requisite to climb over or remove obstacles or to resort to portable ladders, and so forth. [70:100]

Front 60

Accessible, Readily (Readily Accessible)

Back 60

Capable of being reached quickly for operation, renewal, or inspections without requiring those to whom ready access is requisite to climb over or remove obstacles or to resort to portable ladders, and so forth. [70, 2008]

Front 61

Accessible Route

Back 61

A continuous unobstructed path that complies with this Code and ICC/ANSI A117.1, American National Standard for Accessible and Usable Buildings and Facilities.

Front 62

Accessible Route (Accessibility)

Back 62

A continuous unobstructed path that complies with this Code and
ICC/ANSI A117.1.

Front 63

Access Ladder

Back 63

One or more rungs (of any shape) for climbing that have a degree of inclination between 60 and 90 degrees.

Front 64

Accessories

Back 64

An item, or items, that are attached to the certified product that are not necessary to meet the requirements of the standard.

Front 65

Accessories

Back 65

Any items that are intended to be attached to the certified product that are not necessary to meet the requirements of this standard.

Front 66

Accessories

Back 66

Items supplied with the battery to facilitate the continued operation of the battery.

Front 67

Accessories

Back 67

Those items that are attached to the powered rescue tool or to a component but are not necessary for the rescue tool or component to meet the requirements of this standard.

Front 68

Accessory

Back 68

An item, or items, that could be attached to a certified product, but are not necessary for the certified product to meet the requirements of the standard.

Front 69

Accessory/Accessories

Back 69

An item, or items, that could be attached to a certified product but that are not necessary for the certified product to meet the requirements of the standard.

Front 70

Accessory Building

Back 70

Any building or structure used incidentally to another building or structure.

Front 71

Accessory Building

Back 71

Any building used incidentally to another building.

Front 72

Accessory Structure

Back 72

Any structure used incidentally to another structure.

Front 73

Accessory Structure

Back 73

Buildings that house offices, employee or operator living units, recreational facilities, grocery stores, convenience stores, gift shops, services, restrooms, dumping stations, showers, laundry facilities, storage units, and other support services customarily a part of a recreational vehicle park or campground operation.

Front 74

Access Panel

Back 74

A closure device used to cover an opening into a duct, an enclosure, equipment, or an appurtenance.

Front 75

Accident

Back 75

An unplanned event that interrupts an activity and sometimes causes injury or damage or a chance occurrence arising from unknown causes; an unexpected happening due to carelessness, ignorance, and the like.

Front 76

Accident

Back 76

An unplanned occurrence, which results in a loss such as unintended injury, illness, death, property damage, or damage to the environment.

Front 77

Accommodation Area

Back 77

A group of accommodation spaces and interconnecting corridors or spaces.

Front 78

Accommodation Space

Back 78

Space designed for human occupancy as living space for persons aboard a vessel.

Front 79

Accommodation Space

Back 79

Space designed for living purposes.

Front 80

Accommodation Spaces

Back 80

Spaces designed for human occupancy as living spaces for persons aboard a vessel.

Front 81

Accomplish by Administrative Action

Back 81

Eliminate, limit, control, or accomplish other actions referenced in the
Fire Safety Concepts Tree.

Front 82

Accountability

Back 82

A system or process to track resources at an incident scene.

Front 83

Accredit

Back 83

To give official authorization to or to approve a process or procedure to recognize as conforming to specific criteria, and to recognize an entity as maintaining standards appropriate to the provision of its services.

Front 84

Accreditation/Accredited

Back 84

A program by which an accreditation body determines that a laboratory has demonstrated the ability to conduct testing as required by this standard.

Front 85

Accreditation/Accredited

Back 85

A system whereby a certification organization determines that a laboratory has demonstrated the ability to conduct tests in an accurate and precise manner consistent with the requirements of this standard, accepts the laboratory’s test data, and continues to monitor laboratory practices to ensure accurate and precise testing consistent with the requirements of this standard.

Front 86

Accreditation Body

Back 86

An approved, third-party organization that is independent of the grading and inspection agencies, and the lumber mills, and that initially accredits and subsequently monitors, on a continuing basis, the competency and performance of a grading or inspection agency related to carrying out specific tasks.

Front 87

Accreditation Body

Back 87

An independent, third-party organization that determines the qualification of laboratories to conduct testing as required by this standard.

Front 88

Accrediting Body

Back 88

A voluntary, nongovernmental association that administers accrediting procedures for entities that certify individuals to fire service professional qualifications standards, or programs granting degrees in nonengineering fire/emergency services-related fields.

Front 89

Accumulator

Back 89

A container or piping that holds a predetermined volume of fuel that is ready for use in a flame effect.

Front 90

Accumulator Charge Valve

Back 90

A valve used to control the flow of fuel into an accumulator.

Front 91

Acetylene Operations

Back 91

Operations that include acetylene generation, storage, purification, compression, cylinder filling, cylinder storage, and calcium carbide storage.

Front 92

Acetylene Plant

Back 92

A facility engaged in the generation and compression of acetylene and in the filling of acetylene cylinders either as its sole operation or in conjunction with facilities for filling other compressed gas cylinders.

Front 93

ACFM

Back 93

Actual cubic feet per minute. (PIP)

Front 94

Acid Dew Point

Back 94

The temperature below which sulfuric acid in the combustion products will condense on exposed surfaces.

Front 95

Acknowledge

Back 95

To confirm that a message or signal has been received, such as by the pressing of a button or the selection of a software command.
(SIG-SSS)

Front 96

A-Class Boundary

Back 96

A boundary designed to resist the passage of smoke and flame for 1 hour when tested in accordance with ASTM E 119, Standard Test Methods for Fire Tests of Building Construction and Materials.

Front 97

A-Class Division

Back 97

A fire barrier system consisting of bulkheads or decks and including all penetrations for piping and cables, doors, windows, and ductwork, providing 60 minutes of fire resistance when tested in accordance with established test methods.

Front 98

Acoustic Emission Inspection

Back 98

A method of nondestructive testing (NDT) that utilizes acoustic or sound waves.

Front 99

Acquired Prop

Back 99

A piece of equipment such as an automobile that was not designed for burning but is used for live fire training evolutions.

Front 100

Acquired Structure

Back 100

A building or structure acquired by the authority having jurisdiction from a property owner for the purpose of conducting live fire training evolutions.

Front 101

Activated Carbon

Back 101

Adsorptive carbon particles or granules usually obtained by heating carbonaceous material in the absence of air or in steam and possessing a high capacity to selectively remove trace and soluble components from solution.

Front 102

Activated Sludge

Back 102

A microbial mass grown in aeration tanks, subsequently separated from treated wastewater by sedimentation, and wasted or returned to the process as needed.

Front 103

Activation Energy

Back 103

The minimum energy that colliding fuel and oxygen molecules must possess to permit chemical interaction.

Front 104

Active Cooling

Back 104

The process of using external methods or devices (e.g., hand and forearm immersion, misting fans, ice vests) to reduce elevated core body temperature.

Front 105

Active Electrode

Back 105

An electrode intended to generate a surgical or physiological effect at its point of application to the patient. (ELE)

Front 106

Active Horizontal Angles of Light Emission

Back 106

The angles, measured in a horizontal plane passing through the optical center of the optical source, as specified by the manufacturer of the optical device, between which the optical source contributes optical power.

Front 107

Active Horizontal Angles of Light Emission

Back 107

The angles, measured in a horizontal plane passing through the optical center of the optical source, as specified by the manufacturer of the optical device, between which the optical source contributes optical power. [1901, 2003]

Front 108

Active Leaf

Back 108

The first operating door of a pair, which is usually the door in which a lock is installed.

Front 109

Active Lock

Back 109

An electric locking device that holds a portal closed and cannot be opened for egress by normal operation of the door hardware.

Front 110

Active Multiplex System

Back 110

A multiplexing system in which signaling devices such as transponders are employed to transmit status signals of each initiating device or initiating device circuit within a prescribed time interval so that the lack of receipt of such a signal can be interpreted as a trouble signal. (SIG-SSS)

Front 111

Active Record

Back 111

A record that is needed to perform current operations.

Front 112

Active Search Measures

Back 112

This phase of search measures includes those that are formalized and coordinated with other agencies.

Front 113

Active Sub-Slab Depressurization System

Back 113

A system designed to achieve lower sub-slab air pressure relative to indoor air pressure by use of a fan-powered vent drawing air from beneath the slab.

Front 114

Activity

Back 114

A component of a public fire and life safety education program.

Front 115

Actual Response Time

Back 115

The total period of time measured from the time of an alarm until the first ARFF vehicle arrives at the scene of an aircraft accident and is in position to apply agent.

Front 116

Actual Start of Construction (Flood Resistance)

Back 116

For all matters related to flood-resistant design and construction, the first placement of permanent construction of a building (including a manufactured home) on a site, such as the pouring of a slab or footings, installation of pilings, or construction of columns. Permanent construction does not include land preparation (such as clearing, excavation, grading, or filling); or the installation of streets and walkways; or the excavation for a basement, footings, piers, or foundations; or the erection of temporary forms; or the installation of accessory buildings such as garages or sheds not occupied as dwelling units and not part of the main building. For a substantial improvement, the actual start of construction means the first alteration of any wall, ceiling, floor, or other structural part of the building, whether or not that alteration affects the exterior dimensions of the building.

Front 117

Actuated Liquid Withdrawal Excess-Flow Valve

Back 117

An excess-flow valve for liquid withdrawal applications that remains in a closed position until actuated by a pipe nipple or adapter, as recommended by the manufacturer, and that is used with a shutoff valve attached to the actuator.

Front 118

Actuating Mechanism

Back 118

A mechanism whose automatic or manual operation leads to the discharge of extinguishing agent.

Front 119

Actuating Member or Bar

Back 119

The activating mechanism of a panic hardware or fire exit hardware device located on the egress side of a door.

Front 120

Actuator

Back 120

The part of the actuating system to which an external actuating force is applied.

Front 121

Actuator, Machine

Back 121

A power mechanism used to effect motion of the machine.

Front 122

Adapter

Back 122

Any device that allows fire hose couplings to be safely interconnected with couplings of different sizes, threads, or mating surfaces, or that allows fire hose couplings to be safely connected to other appliances.

Front 123

Adaptive Reuse

Back 123

The conversion or functional change of a building from the purpose or use for which it was originally constructed or designed.

Front 124

Addition

Back 124

An extension or increase in the building area, aggregate floor area, height, or number of stories of a structure.

Front 125

Addition

Back 125

An increase in building area, aggregate floor area, building height, or number of stories of a structure.

Front 126

Addition

Back 126

An increase in building area, aggregate floor area, height, or number of stories of a structure. [5000, 2006]

Front 127

Addition

Back 127

An increase in building area, aggregate floor area, height or number of stories of a structure. [ASCE 7:11.2]

Front 128

Addition

Back 128

An increase in the building area, aggregate floor area, building height, or number of stories of a structure.

Front 129

Addition

Back 129

An increase in the building area, aggregate floor area, height, or number of stories of a structure. [ASCE/SEI 7:11.2]

Front 130

Additive

Back 130

A liquid such as foam concentrates, emulsifiers, and hazardous vapor suppression liquids and foaming agents intended to be injected into the water stream at or above the water pressure.

Front 131

Additive

Back 131

Any chemical or mixture of chemicals intentionally introduced into the system.

Front 132

Additive Proportioning

Back 132

Additive proportioning is the method (such as premix, metered, or balanced pressure) used for the introduction of an additive or additive mixture at the recommended percent ratio into the water system.

Front 133

Additive Pump

Back 133

A pump that is used to inject additives into the water stream.

Front 134

Address

Back 134

A number or other code and the street name identifying a location.

Front 135

Addressable Device

Back 135

A fire alarm system component with discrete identification that can have its status individually identified or that is used to individually control other functions. (SIG-IDS)

Front 136

Adequate Ventilation

Back 136

Air volume and velocity shall be sufficient to dilute, render harmless, and carry away flammable or explosive concentrations of dusts and vapors.

Front 137

Adequate Ventilation

Back 137

A ventilation rate that affords either 6 air changes per hour, or 1 cfm per square foot of floor area, or other similar criteria that prevent the accumulation of significant quantities of vapor-air concentrations from exceeding 25 percent of the lower flammable limit.

Front 138

Adiabatic Heating

Back 138

The heating of a gas caused by its compression. [99, 2005 (HYP)]

Front 139

Adiabatic Heating

Back 139

The heating of a gas caused by its compression. (HYP)

Front 140

Adjacent

Back 140

Sharing a common wall, partition, or barrier.

Front 141

Adjacent Ground Elevation

Back 141

The reference plane representing the average elevation of the finished ground level measured at a distance of 10 ft (3 m) from all exterior walls of the building.

Front 142

Adjacent Spaces

Back 142

Those spaces in all directions from subject space, including all points of contact, corners, diagonals, decks, tank tops, and bulkheads, and including areas affected by hot work, where slag, products of combustion, and sparks would be expected to fall or accumulate.

Front 143

Adjacent Spaces

Back 143

Those spaces in all directions from subject space, including points of contact, internal and external, such as decks, sumps, floating roofs, secondary containment areas, interstitial spaces, under floors, supports, tank tops, and bulkheads.

Front 144

Adjust

Back 144

To maintain or regulate, within prescribed limits, by setting the operating characteristics to specified parameters.

Front 145

Adjustable Speed Drive

Back 145

A combination of the power converter, motor, and motor-mounted auxiliary devices such as encoders, tachometers, thermal switches and detectors, air blowers, heaters, and vibration sensors.

Front 146

Adjustable Speed Drive

Back 146

A combination of the power converter, motor, and motor mounted auxiliary devices such as encoders, tachometers, thermal switches and detectors, air blowers, heaters, and vibration sensors. [70:430.2]

Front 147

Adjustable-Speed Drive System

Back 147

An interconnected combination of equipment that provides a means of adjusting the speed of a mechanical load coupled to a motor. A drive system typically consists of an adjustable speed drive and auxiliary electrical apparatus.

Front 148

Adjusted Minimum Design Quantity (AMDQ)

Back 148

The minimum design quantity of agent that has been adjusted in consideration of design factors.

Front 149

Adjusting Device

Back 149

An auxiliary equipment system component; a connector device that allows adjustment to be made to a piece of equipment.

Front 150

Administrative Areas

Back 150

These areas typically include general offices (i.e., administrative, accounting, engineering), mailrooms, cafeterias, and customer service operation center types of working environments.

Front 151

Admiralty Law/Maritime Law

Back 151

A court exercising jurisdiction over maritime cases.

Front 152

Advanced Cardiac Life Support (ACLS)

Back 152

A nationally recognized curriculum to teach advanced methods of treatment for cardiac and other emergencies.

Front 153

Advanced Cleaning

Back 153

The thorough cleaning of ensembles or elements by washing with cleaning agents.

Front 154

Advanced Exterior Fire Fighting

Back 154

Offensive fire fighting performed outside of an enclosed structure when the fire is beyond the incipient stage.

Front 155

Advanced Exterior Fire Fighting

Back 155

Offensive fire fighting performed outside of an enclosed structure when the fire is beyond the incipient stage. (See also 3.3.8, Incipient Stage.) [600, 2005]

Front 156

Advanced Life Support (ALS)

Back 156

Emergency medical treatment beyond basic life support level as defined by the medical authority having jurisdiction.

Front 157

Advanced Life Support (ALS)

Back 157

Emergency medical treatment beyond basic life support level as defined by the medical authority having jurisdiction. [1500, 2007]

Front 158

Advanced Life Support (ALS)

Back 158

Emergency medical treatment beyond basic life support level as defined by the medical authority having jurisdiction. [1500:3.3]

Front 159

Advanced Life Support (ALS)

Back 159

Emergency medical treatment beyond basic life support level as defined by the medical authority having jurisdiction in conjunction with the American Heart Association guidelines.

Front 160

Advanced Life Support (ALS)

Back 160

Functional provision of advanced airway management including intubation, advanced cardiac monitoring, manual defibrillation, establishment and maintenance of intravenous access, and drug therapy.

Front 161

Advanced Life Support (ALS) (EMS)

Back 161

Functional provision of advanced airway management including intubation, advanced cardiac monitoring, manual defibrillation, establishment and maintenance of intravenous access, and drug therapy.

Front 162

Advanced Light Water Reactors (ALWRs)

Back 162

ALWRs are next generation light water reactors.

Front 163

Advanced (Tertiary) Wastewater Treatment

Back 163

Any physical, chemical, or biological treatment process used to accomplish a degree of treatment greater than that achieved by secondary treatment. (See also 3.3.64.4.3, Secondary Wastewater Treatment.)

Front 164

Adverse Condition

Back 164

Any condition occurring in a communications or transmission
channel that interferes with the proper transmission or interpretation,
or both, of status change signals at the supervising station. (See also
3.3.172.7, Trouble Signal.) (SIG-SSS)

Front 165

Aeration Room

Back 165

A room or area with controlled temperature or airflow where ethylene oxide sterilized products are held initially for offgassing.

Front 166

Aerial Apparatus

Back 166

A piece of fire apparatus with a permanently mounted,
power-operated elevating device, including aerial ladders, aerial
ladder platforms, telescoping aerial platforms, articulating aerial
platforms, and elevating water delivery systems.

Front 167

Aerial Device

Back 167

An aerial ladder, elevating platform, aerial ladder platform, or water tower that is designed to position personnel, handle materials, provide egress, and discharge water.

Front 168

Aerial Device

Back 168

An aerial ladder, elevating platform, or water tower that is designed to position personnel, handle materials, provide continuous egress, or discharge water.

Front 169

Aerial Device

Back 169

An aerial ladder, elevating platform, or water tower that is designed to position personnel, handle materials, provide continuous egress, or discharge water. [1901, 2003]

Front 170

Aerial Device (Display)

Back 170

A fireworks device designed to be launched into the air for use in a fireworks display.

Front 171

Aerial Fire Apparatus

Back 171

A vehicle equipped with an aerial ladder, elevating platform, aerial ladder platform, or water tower that is designed and equipped to support fire fighting and rescue operations by positioning personnel, handling materials, providing continuous egress, or discharging water at positions elevated from the ground.
[1901, 2003]

Front 172

Aerial Fire Apparatus

Back 172

A vehicle equipped with an aerial ladder, elevating platform, or water tower that is designed and equipped to support fire fighting and rescue operations by positioning personnel, handling materials, providing continuous egress, or discharging water at positions elevated from the ground.

Front 173

Aerial Ladder

Back 173

A self-supporting, turntable-mounted, power-operated ladder of two or more sections permanently attached to a self-propelled automotive fire apparatus and designed to provide a continuous egress route
from an elevated position to the ground.

Front 174

Aerial Ladder

Back 174

A self-supporting, turntable-mounted, power-operated ladder of two or more sections permanently attached to a self-propelled automotive fire apparatus and designed to provide a continuous egress route
from an elevated position to the ground. [1901, 2003]

Front 175

Aerial Ladder Sections

Back 175

The structural members of the aerial ladder consisting of the base and fly sections.

Front 176

Aerial Operator

Back 176

The fire apparatus driver who has met the requirements of Chapter 6 for the operation of apparatus equipped with aerial devices.

Front 177

Aerial Salute

Back 177

A salute that functions as an aerial shell.

Front 178

Aerial Shell

Back 178

A cartridge containing pyrotechnic composition, a burst charge, and an internal time fuse or module, that is propelled into the air from a mortar and that is intended to burst at or near apogee.

Front 179

Aerial Shell

Back 179

A cartridge containing pyrotechnic composition, a burst charge, and an internal time fuse or module, that is propelled into the air from a mortar and that is intended to burst at or near apogee. [1123, 2006]

Front 180

Aero Model

Back 180

An unmanned flying device including the category of model or high power rocket as defined in this section.

Front 181

Aerosol

Back 181

An intimate mixture of a liquid or a solid in a gas; the liquid or solid, called the dispersed phase, is uniformly distributed in a finely divided state throughout the gas, which is the continuous phase or dispersing medium. (GAS)

Front 182

Aerosol

Back 182

A product that is dispensed from an aerosol container by a propellant.

Front 183

Aerosol

Back 183

A product that is dispensed from an aerosol container by a propellant. [30B, 2007]

Front 184

Aerosol Container

Back 184

A metal can, up to a maximum size of 1000 ml (33.8 fl oz), or a glass or plastic bottle, up to a maximum size of 118 ml (4 fl oz), that is designed and intended to dispense an aerosol.

Front 185

Aerosol Container

Back 185

A metal can, up to a maximum size of 33.8 fl oz (1000 ml), or a glass or plastic bottle, up to a maximum size of 4 fl oz (118 ml), that is designed and intended to dispense an aerosol. [30B, 2007]

Front 186

Aerosol Propellant

Back 186

The liquefied or compressed gas that expels the contents from an aerosol container when the valve is actuated. A propellant is considered flammable if it forms a flammable mixture with air or if a flame is self-propagating in a mixture of the propellant and air.

Front 187

Aerosol Warehouse

Back 187

A detached building or a separate portion of a building used for the storage, shipping, and receiving of aerosol products.

Front 188

After (Aft)

Back 188

The direction toward the stern of the vessel.

Front 189

Afterburner (Direct Thermal
Oxidizer)

Back 189

A direct thermal oxidizer, installed in series and downstream of process equipment, that generates VOC or HC; also referred to as secondary combustion chamber.

Front 190

Afterflame

Back 190

Persistent flaming of a material after the ignition source has been removed.

Front 191

Afterflame Time

Back 191

The length of time for which a material, component, or chemical-protective suit continues to burn after the simulated chemical flash fire has ended.

Front 192

Afterflame Time

Back 192

The length of time for which a material continues to flame after the ignition source has been removed.

Front 193

Agency

Back 193

A division of government with a specific function offering a particular kind of assistance.

Front 194

Agency

Back 194

A division of government with a specific function or a nongovernmental organization (e.g., private business) that offers a particular kind of assistance.

Front 195

Agency

Back 195

Any federal, tribal, provincial, state, or local entity that has legal authority to organize and direct a fire-fighting service.

Front 196

Agency

Back 196

The organization legally established and authorized to operate a facility.

Front 197

Agency Executive or Administrator

Back 197

A chief executive officer (or designee) of an agency or jurisdiction that has responsibility for the incident or planned event.

Front 198

Agency Representative

Back 198

An individual assigned to an incident from an assisting or cooperating agency who reports to the liaison officer and who has been delegated authority to make decisions on matters affecting that agency’s participation at the incident.

Front 199

Agent Concentration

Back 199

The portion of agent in an agent-air mixture expressed in volume percent.

Front 200

Agent Quantity

Back 200

Mass of solid aerosol-forming compound required to achieve the design application density within the protected volume within the specified discharge time.

Front 201

Agent-Specific Competencies

Back 201

The knowledge, skills, and judgment needed by operations level responders who have completed the operations level competencies and who are designated by the authority having jurisdiction to respond to releases or potential releases of a specific group of WMD agents.

Front 202

Agglomerating

Back 202

A characteristic of coal that causes coking on the fuel bed during volatilization.

Front 203

Agglomeration

Back 203

Alkali compounds can attach to bed material particles. These compounds can have low melting points and cause the bed particles to stick to each other to form agglomerates.

Front 204

Aggressive Tire Tread

Back 204

Tread designed to provide maximum traction for all types of surfaces, including sand, mud, snow, ice, and hard surfaces, wet or dry.

Front 205

Agricultural Building

Back 205

A building located on agricultural property used for sheltering farm implements, hay, grain, livestock, or other farm produce or equipment in which there is no human habitation and that is not used by the public.

Front 206

Agricultural Dust

Back 206

Any finely divided solid agricultural material 420 microns or smaller in diameter (material passing a U.S. No. 40 Standard Sieve) that presents a fire or explosion hazard when dispersed and ignited in air.

Front 207

Agricultural Dust

Back 207

Any finely divided solid agricultural material 420 microns or smaller in diameter (material passing a U.S. No. 40 Standard Sieve) that presents a fire or explosion hazard when dispersed and ignited in air.
[61, 2008]

Front 208

Air Accident Investigations Branch (AAIB)

Back 208

A UK agency that is responsible for investigating and determining the probable cause of all British aircraft accidents.

Front 209

Air-Aspirating Discharge Devices

Back 209

Devices specially designed to aspirate and mix air into the foam solution to generate foam, followed by foam discharge in a specific design pattern.

Front 210

Airborne Emergency

Back 210

Those emergencies that affect the operational integrity of an aircraft while in flight. The seriousness of these emergencies can be defined by using alert status guidelines stated in FAA terms, and aircraft emergencies for which services may be required, as defined in International Civil Aviation Organization Airport Services Manual, Part 1, “Rescue and Fire Fighting.”

Front 211

Airborne Pathogens

Back 211

Microorganisms that can produce infection and/or cause disease in humans after being inhaled.

Front 212

Airburst

Back 212

A pyrotechnic device that is suspended in the air to simulate outdoor aerial fireworks shells without producing hazardous debris.

Front 213

Airburst

Back 213

A pyrotechnic device that is suspended in the air to simulate outdoor aerial fireworks shells without producing hazardous debris. [
1126, 2006]

Front 214

Air Change

Back 214

A quantity of air, provided through a fuel burner, equal to the volume of furnace and boiler gas passes.

Front 215

Air Cleaner

Back 215

A device used to reduce or remove airborne solids from heating, ventilating, and air-conditioning systems by electrostatic means.

Front 216

Air Conditioning

Back 216

The treatment of air so as to control simultaneously its temperature, humidity, cleanness, and distribution to meet the requirements of a conditioned space.

Front 217

Air-Conditioning or Comfort-Cooling Equipment

Back 217

All of that equipment intended or installed for the purpose of processing the treatment of air so as to control simultaneously its temperature, humidity, cleanliness, and distribution to meet the requirements of the conditioned space.

Front 218

Air Connector

Back 218

A conduit for transferring air between an air duct or plenum and an air terminal unit or an air inlet or air outlet.

Front 219

Air Control Panel

Back 219

A consolidated arrangement of valves, regulators, gauges, and air system piping at a location that allows the operator to monitor and control the airflow and pressure within the air system from a centralized location.

Front 220

Aircraft

Back 220

A vehicle designed for flight that is powered by liquid petroleum fuel.

Front 221

Aircraft Access Door

Back 221

Any opening through which any portion of the aircraft is passed to gain entry to the hangar.

Front 222

Aircraft Accident

Back 222

An occurrence associated with the operation of an aircraft that takes place between the time any person boards the aircraft with the intention of flight and until all such persons have disembarked and in which any person suffers death or serious injury or in which the aircraft receives substantial damage.

Front 223

Aircraft Accident

Back 223

An occurrence associated with the operation of an aircraft that takes place between the time any person boards the aircraft with the intention of flight and until all such persons have disembarked and in which any person suffers death or serious injury or in which the aircraft receives substantial damage. [403, 2003]

Front 224

Aircraft Accident

Back 224

An occurrence associated with the operation of an aircraft that takes place between the time any person boards the aircraft with the intention of flight and until all such persons have disembarked and in which any person suffers death or serious injury or in which the aircraft receives substantial damage. [403:3.3]

Front 225

Aircraft Accident Pre-Incident Planning

Back 225

This term is used to describe the process of forecasting all factors that could possibly exist involving an aircraft accident that could bear upon the existing emergency resources. A pre-incident plan should define the emergency organizational authority and the responsibilities of all those involved.

Front 226

Aircraft Breathing-Oxygen System

Back 226

A system onboard an aircraft to provide breathing oxygen to occupants of the aircraft.

Front 227

Aircraft Emergency Exercise

Back 227

Testing of the emergency plan and review of the results in order to improve the effectiveness of the plan.

Front 228

Aircraft Engine Test Facility

Back 228

An integrated system of building(s), structure(s), space, and services used to test aircraft engines contained within a test cell or on a test stand.

Front 229

Aircraft Familiarization

Back 229

Refers to the knowledge of vital information that rescue and
fire-fighting personnel should learn and retain with regard to the
specific types of aircraft that normally use the airport and other
aircraft that might use the airport due to weather conditions at
scheduled destinations.

Front 230

Aircraft Fire Fighting

Back 230

The control or extinguishment of fire adjacent to or involving an aircraft following ground accidents/incidents. Aircraft fire fighting does not include the control or extinguishment of airborne fires in aircraft.

Front 231

Aircraft Fire Fighting

Back 231

The control or extinguishment of fire adjacent to or involving an aircraft following ground accidents or incidents. Aircraft fire fighting does not include the control or extinguishment of airborne fires in aircraft.

Front 232

Aircraft Fueling Ramp

Back 232

Any outdoor area at an airport, including aprons and hardstands, where aircraft are normally fueled or defueled.

Front 233

Aircraft Fueling Vehicle

Back 233

A fuel servicing hydrant vehicle, hydrant cart, or an aircraft fuel servicing tank vehicle.

Front 234

Aircraft Fuel Servicing

Back 234

The transfer of fuel into or from an aircraft.

Front 235

Aircraft Fuel Servicing Hydrant Vehicle (Hydrant Vehicle)

Back 235

A vehicle equipped with facilities to transfer fuel between a fuel hydrant and an aircraft.

Front 236

Aircraft Fuel Servicing Ramp or Apron

Back 236

An area or position at an airport used for the fuel servicing of aircraft.

Front 237

Aircraft Fuel Servicing Tank Vehicle (Fueler)

Back 237

A vehicle having a cargo tank (tank truck, tank full trailer, tank semitrailer) designed for or used in the transportation and transfer of fuel into or from an aircraft.

Front 238

Aircraft Fuel Tank Inerting

Back 238

The use of an inert gas to render the atmosphere of an enclosure nonexplosive or nonflammable, in effect, reducing the oxygen content of the air in the tank vapor space below the lowest point at which combustion can occur by replacing the oxygen in air with an inert gas.

Front 239

Aircraft Hand Portable Fire Extinguisher

Back 239

An approved, portable device that is carried and operated by hand and contains an extinguishing agent that can be expelled under pressure for the purpose of suppressing or extinguishing fire.

Front 240

Aircraft Hangar

Back 240

A building or other structure inside any part of which aircraft are housed or stored, and in which aircraft might undergo service, repairs, or alterations.

Front 241

Aircraft Incident

Back 241

An occurrence, other than an accident, associated with the operation of an aircraft, that affects or could affect continued safe operation if not corrected. [402:3.3]

Front 242

Aircraft Incident

Back 242

An occurrence, other than an accident associated with the operation of an aircraft, that affects or could affect continued safe operation if not corrected. An incident does not result in serious injury to persons or substantial damage to aircraft.

Front 243

Aircraft Incident

Back 243

An occurrence, other than an accident associated with the operation of an aircraft, that affects or could affect continued safe operation if not corrected. An incident does not result in serious injury to persons or substantial damage to aircraft. [402, 2002]

Front 244

Aircraft Incident

Back 244

An occurrence, other than an accident, associated with the operation of an aircraft, that affects or could affect continued safe operation if not corrected. An incident does not result in serious injury to persons or substantial damage to aircraft. [402, 2008]

Front 245

Aircraft Incident

Back 245

An occurrence, other than an accident, associated with the operation of an aircraft, that affects or could affect continued safe operation if not corrected. An incident does not result in serious injury to persons or substantial damage to the aircraft.

Front 246

Aircraft Interior Access Vehicle

Back 246

A vehicle designed with the primary purpose of enabling access to an aircraft interior.

Front 247

Aircraft Loading Walkway

Back 247

An aboveground device through which passengers move between a point in an airport terminal building and an aircraft. Included in this category are walkways that are essentially fixed and permanently placed, or walkways that are essentially mobile in nature and that fold, telescope, or pivot from a fixed point at the airport terminal building.

Front 248

Aircraft Loading Walkway

Back 248

An aboveground device through which passengers move between a point in an airport terminal building and an aircraft. Included in this category are walkways that are essentially fixed and permanently placed, or walkways that are essentially mobile in nature and that fold, telescope, or pivot from a fixed point at the airport terminal building. [415, 2008]

Front 249

Aircraft Maintenance

Back 249

Aircraft overhaul, repair, and service operations.

Front 250

Aircraft Operator

Back 250

A person, organization, or enterprise engaged in, or offering to engage in, aircraft operation.

Front 251

Aircraft Overhaul

Back 251

The major disassembly, inspection, repair, and reassembly of aircraft.

Front 252

Aircraft Painting Hangar.

Back 252

An aircraft hangar constructed for the express purpose of spray/coating/dipping applications and provided with dedicated ventilation supply and exhaust.

Front 253

Aircraft Repair

Back 253

The modification of an aircraft, rebuilding of structural damage, correction of a system malfunction, or replacement of a major component or subassembly that requires an aircraft to be in
out-of-flying status.

Front 254

Aircraft Rescue

Back 254

Action taken to save or set free persons involved in an aircraft incident/accident by safeguarding the integrity of the aircraft fuselage from an external/internal fire, to support self-evacuation, and to undertake the removal of injured and trapped persons.

Front 255

Aircraft Rescue and Fire Fighting

Back 255

The fire-fighting actions taken to rescue persons and to control or extinguish fire involving or adjacent to aircraft on the ground.

Front 256

Aircraft Rescue and Fire Fighting

Back 256

The fire-fighting actions taken to rescue persons and to control or extinguish fire involving or adjacent to aircraft on the ground. [1500:3.3]

Front 257

Aircraft Rescue and Fire Fighting (ARFF)

Back 257

The fire-fighting action taken to prevent, control, or extinguish fire involved or adjacent to an aircraft for the purpose of maintaining maximum escape routes for occupants using normal and emergency routes for egress. Additionally, ARFF personnel will enter the aircraft to provide assistance to the extent possible in the evacuation of the occupants. Although life safety is primary to ARFF personnel, responsibilities such as fuselage integrity and salvage should be maintained to the extent possible.

Front 258

Aircraft Rescue and Fire-Fighting (ARFF) Vehicle

Back 258

A vehicle intended to carry rescue and fire-fighting equipment for rescuing occupants and combating fires in aircraft at, or in the vicinity of, an airport.

Front 259

Aircraft Rescue and Fire-Fighting (ARFF) Vehicle

Back 259

A vehicle intended to carry rescue and fire-fighting equipment for rescuing occupants and combating fires in aircraft at, or in the vicinity of, an airport. [1002:3.3]

Front 260

Aircraft Rescue and Fire-Fighting Vehicle

Back 260

A vehicle intended to carry rescue and fire-fighting equipment for rescuing occupants and combating fires in aircraft at or in the vicinity of airports.

Front 261

Aircraft Storage and Servicing Area

Back 261

That part of a hangar normally used for the storage and servicing of one or more aircraft, not including any adjacent or contiguous areas or structures, such as shops, storage areas, and offices.

Front 262

Aircraft Storage and Servicing Area

Back 262

The part of a hangar normally used for the storage and servicing of one or more aircraft, not including any adjacent or contiguous areas or structures, such as workshops, storage areas, and offices.

Front 263

Air-Cushioned Vehicle (ACV)

Back 263

A vehicle that can travel on land and water.

Front 264

Air Distribution System

Back 264

A continuous passageway for the transmission of air that, in addition to air ducts, can include air connectors, air duct fittings, dampers, plenums, fans, and accessory air-handling equipment but that does not include conditioned spaces.

Front 265

Air Duct

Back 265

A conduit or passageway for conveying air to or from heating, cooling, air conditioning, or ventilating equipment, but not including the plenum.

Front 266

Air Duct

Back 266

A conduit or passageway for conveying air to or from heating, cooling, air conditioning, or ventilating equipment, but not including the plenum. [90A:3.3.5]

Front 267

Air Duct Covering

Back 267

A material such as an adhesive, insulation, banding, a coating(s), film, or a jacket used to cover the outside surface of an air duct, fan casing, or duct plenum.

Front 268

Air Duct Lining

Back 268

A material such as an adhesive, insulation, a coating(s), or film used to line the inside surface of an air duct, fan casing, or duct plenum.

Front 269

Air Filter

Back 269

A device used to reduce or remove airborne solids from heating, ventilating, and air conditioning.

Front 270

Air Filter

Back 270

A device used to reduce or remove airborne solids from heating, ventilating, and air-conditioning systems.

Front 271

Air-Fuel Gas Mixer

Back 271

A mixer that combines air and fuel gas in the proper proportion for combustion.

Front 272

Air-Handling Unit Room Plenum

Back 272

An individual room containing an air-handling unit(s) used to gather air from various sources and combine the air within the room for returning to the air-handling unit.

Front 273

Air Heater

Back 273

An indirect-fired appliance intended to supply heated air for space heating and other purposes, but not intended for permanent installation.

Front 274

Air-Inflated Structure

Back 274

A structure whose shape is maintained by air pressure in cells or tubes forming all or part of the enclosure of the usable area and in which the occupants are not within the pressurized area used to support the structure.

Front 275

Air-Inflated Structure

Back 275

A structure whose shape is maintained by air pressure in cells or tubes forming all or part of the enclosure of the usable area and in which the occupants are not within the pressurized area used to support the structure. [5000, 2006]

Front 276

Air Inlet

Back 276

Any opening through which air is removed from a space and returned to an air distribution system.

Front 277

Air Inlet Valve

Back 277

A valve used for letting atmospheric air into a vacuum system. The valve also is called a vacuum breaker.

Front 278

Air Intakes

Back 278

An opening in a building’s envelope whose purpose is to allow outside air to be drawn into the structure to replace inside air that is removed by exhaust systems or to improve the quality of the inside air by providing a source of air having a lower concentration of odors, suspended particles, or heating content.

Front 279

Air Jet Mixer

Back 279

A mixer using the kinetic energy of a stream of air issuing from an orifice to entrain the fuel gas required for combustion.

Front 280

Airline Coordinator

Back 280

A representative authority delegated by an airline to represent its interests during an emergency covered by this guide.

Front 281

Air-Material Separator (AMS)

Back 281

A collector designed to separate the conveying air from the material being conveyed.

Front 282

Air-Mechanical Brakes

Back 282

Brakes in which the force from an individual air chamber is applied directly to the friction surfaces through a mechanical linkage.

Front 283

Air-Moving Device

Back 283

A fan, blower, or other device that establishes an airflow by moving a volume of air per unit time.

Front 284

Air-Moving Device (AMD)

Back 284

A power-driven fan, blower, or other device that establishes an airflow by moving a given volume of air per unit time.

Front 285

Air Outlet

Back 285

Any opening through which air is delivered to a space from an air distribution system.

Front 286

Air-Over-Hydraulic Brakes

Back 286

Brakes in which the force of a master air cylinder is applied to the friction surfaces through an intervening hydraulic system.

Front 287

Air Pollution Control Devices

Back 287

Equipment and devices used for the purpose of cleaning air passing through them or by them in such a manner as to reduce or remove the impurities contained therein.

Front 288

Airport (Aerodrome)

Back 288

An area on land or water that is used or intended to be used for the landing and takeoff of aircraft and includes buildings and facilities.

Front 289

Airport (Aerodrome)

Back 289

An area on land or water that is used or intended to be used for the landing and takeoff of aircraft and includes buildings and facilities. [402,
2008]

Front 290

Airport Air Traffic Control

Back 290

A service established to provide air and ground traffic control for airports.

Front 291

Airport Air Traffic Control
(ATC)

Back 291

A service established to provide air and ground traffic control for airports.

Front 292

Airport/Community Emergency
Plan

Back 292

Establishment of procedures for coordinating the response of airport services with other agencies in the surrounding community that could be of assistance in responding to an emergency occurring on, or in the vicinity of, the airport.

Front 293

Airport Familiarization

Back 293

Refers to the knowledge that rescue and fire-fighting personnel must maintain relative to locations, routes, and conditions that will enable them to respond quickly and efficiently to emergencies on the airport and those areas surrounding the airport.

Front 294

Airport Fire Chief

Back 294

The individual normally having operational control over the airport’s rescue and fire-fighting personnel and equipment, or a designated appointee.

Front 295

Airport Fire Department
Personnel

Back 295

Personnel under the operational jurisdiction of the chief of the airport fire department assigned to aircraft rescue and fire fighting.

Front 296

Airport Fire Department
Personnel

Back 296

Personnel under the operational jurisdiction of the chief of the airport fire department assigned to aircraft rescue and fire fighting. [403:3.3]

Front 297

Airport Fire Fighter

Back 297

The Fire Fighter II who has demonstrated the skills and knowledge necessary to function as an integral member of an aircraft rescue and fire-fighting (ARFF) team.

Front 298

Airport Fueling System

Back 298

An arrangement of aviation fuel storage tanks, pumps, piping, and associated equipment, such as filters, water separators, hydrants and station, or aircraft fuel servicing vehicles, installed at an airport and designed to service aircraft at fixed positions.

Front 299

Airport Manager

Back 299

The individual having managerial responsibility for the operation and safety of an airport. The manager can have administrative control over aircraft rescue and fire-fighting services but normally does not exercise authority over operational fire and rescue matters.

Front 300

Airport Manager

Back 300

The individual having managerial responsibility for the operation and safety of an airport. The manager can have administrative control over aircraft rescue and fire-fighting services, but normally does not exercise authority over operational fire and rescue matters.
[403, 2003]

Front 301

Airport Ramp

Back 301

Any outdoor area at an airport, including aprons and hardstands, on which aircraft are normally fueled, defueled, stored, parked, maintained, or serviced.

Front 302

Airport Ramp

Back 302

Any outdoor area, including aprons and hardstands, where aircraft can be positioned, stored, serviced, or maintained, irrespective of the nature of the surface of the area.

Front 303

Airport Ramp

Back 303

Any outdoor area, including aprons and hardstands, where aircraft can be positioned, stored, serviced, or maintained, irrespective of the nature of the surface of the area. [415, 2008]

Front 304

Airport Terminal Building

Back 304

A structure used primarily for air passenger enplaning or deplaning, including ticket sales, flight information, baggage handling, and other necessary functions in connection with air transport operations. This term includes any extensions and satellite buildings used for passenger
handling or aircraft flight service functions. Aircraft loading walkways and
“mobile lounges” are excluded.

Front 305

Airport Terminal Building

Back 305

A structure used primarily for air passenger enplaning or deplaning, including ticket sales, flight information, baggage handling, and other necessary functions in connection with air transport operations. This term includes any extensions and satellite buildings used for passenger
handling or aircraft flight service functions. Aircraft loading walkways and
“mobile lounges” are excluded. [415, 2008]

Front 306

Air-Purifying Respirator (APR)

Back 306

A respirator with an air-purifying filter, cartridge, or canister that removes specific air contaminants by passing ambient air through the air-purifying element.

Front 307

Air Quality Monitors

Back 307

Electronic instruments that monitor the air for such elements as carbon monoxide levels and moisture levels and that are capable of sending a signal to automatically shut down the air system.

Front 308

Air-Rich

Back 308

A ratio of air to fuel supplied to a combustion chamber that provides more than the minimum excess air needed for optimum combustion of the fuel.

Front 309

Air-Right Structure

Back 309

A structure other than a skywalk bridge that is built over a roadway using the roadway’s air rights.

Front 310

Air-Right Structure

Back 310

A structure other than a skywalk bridge that is built over a roadway using the roadway’s air rights. [5000, 2006]

Front 311

Air Sampling-Type Detector

Back 311

A detector that consists of a piping or tubing distribution network that runs from the detector to the area(s) to be protected. An aspiration fan in the detector housing draws air from the protected area back to the detector through air sampling ports, piping, or tubing. At the detector, the air is analyzed for fire products.
[72, 2007]

Front 312

Air Sampling-Type Detector

Back 312

A detector that consists of a piping or tubing distribution network that runs from the detector to the area(s) to be protected. An aspiration fan in the detector housing draws air from the protected area back to the detector through air sampling ports, piping, or tubing. At the detector, the air is analyzed for fire products. (SIG-IDS)

Front 313

Air Shutter

Back 313

An adjustable device for varying the size of the primary air inlet(s).

Front 314

Airside (Airport Operational
Area)

Back 314

The movement area of an airport, adjacent terrain, and buildings or portions thereof, access to which is controlled.

Front 315

Air Space

Back 315

The space below a raised floor or above a suspended ceiling used to circulate environmental air within the information technology equipment room/information technology equipment area.

Front 316

Air-Supported Structure

Back 316

A structure where shape is maintained by air pressure and in which occupants are within the elevated pressure area.

Front 317

Air-Supported Structure

Back 317

A structure where shape is maintained by air pressure and in which occupants are within the elevated pressure area. [5000, 2006]

Front 318

Air Tank

Back 318

A storage vessel meeting the requirements of either U.S. Department of Transportation (DOT) or American Society of Mechanical Engineers (ASME) and used to store an accumulation of air under pressure.

Front 319

Air Terminal

Back 319

A strike termination device that is a receptor for attachment of flashes to the lightning protection system and is listed for the purpose.

Front 320

Air Terminal Unit

Back 320

An appliance receiving, conditioning, and delivering air supplied through an air distribution system.

Front 321

Air Traffic Control Provider

Back 321

A service established to provide air and ground traffic control for airports. (This includes airport control tower and airport flight information services.)

Front 322

Air Traffic Control Tower

Back 322

An enclosed structure or building at airports with elevated levels for support of equipment and occupied for observation, control, operation, and signaling of aircraft in flight and on the ground.

Front 323

Air Transfer

Back 323

The process of transferring air from one SCBA cylinder to another SCBA cylinder of the same rated pressure capacity by connecting them together with properly designed fittings and a high-pressure transfer line.

Front 324

Air Transfer Opening

Back 324

An opening designed to allow the movement of environmental air between two contiguous spaces.

Front 325

Air Travel

Back 325

The horizontal distance through the fill measured just below the distribution basin.

Front 326

Air Ventilation

Back 326

The passing of undiluted air through an aircraft tank to render the atmosphere of the tank more suitable for human occupancy and to reduce the amount of flammable vapors in the tank to below the lower explosive limit of the fuel vapors involved.

Front 327

Aisle

Back 327

An unenclosed path of travel that forms part of the exit access and provides an open and unobstructed path of egress travel to another aisle, a corridor, a vomitory, or an exit.

Front 328

Aisle Accessway

Back 328

The initial portion of an exit access that leads to an aisle.

Front 329

Aisle Width

Back 329

The horizontal dimension between the face of the loads in racks under consideration. (See Figure A.3.9.3.1.)

Front 330

Aisle Width for Rack Storage

Back 330

The horizontal dimension between the face of the loads in racks under consideration. (See Figure A.3.3.7.) [13, 2007]

Front 331

Alarm

Back 331

An audible or visible signal indicating an off-standard or abnormal condition.

Front 332

Alarm

Back 332

Any notification made to the fire department that a situation exists or may exist that requires a response.

Front 333

Alarm

Back 333

A piece of equipment that generates a visual or audible signal that is intended to attract attention.

Front 334

Alarm

Back 334

A signal or message from a person or device indicating the existence
of a fire, medical emergency, or other situation that requires action by
an emergency response agency.

Front 335

Alarm

Back 335

A signal or message from a person or device indicating the existence of a fire, medical emergency, or other situation that requires emergency services response.

Front 336

Alarm

Back 336

A signal or message from a person or device indicating the existence of a fire, medical emergency, or other situation that requires fire department action.

Front 337

Alarm

Back 337

A signal or message from a person or device indicating the existence of an emergency or other situation that requires immediate action.

Front 338

Alarm

Back 338

A warning of danger.

Front 339

Alarm

Back 339

A warning of danger. (SIG-FUN)

Front 340

Alarm Receiving Facility

Back 340

The place where alarm or supervisory signals are received. This can include proprietary supervising stations, central supervising stations, remote supervising stations, or public fire service communications centers.

Front 341

Alarms and Indicators

Back 341

Any device capable of providing audible, visible, or olfactory indication.

Front 342

Alarm Service

Back 342

The service required following the receipt of an alarm signal. (SIG-SSS)

Front 343

Alarm Signal

Back 343

An audible warning that is identifiable as an indication that an emergency services person is in need of assistance.

Front 344

Alarm Signal

Back 344

A signal indicating an emergency condition or an alert that requires action. [72, 2007]

Front 345

Alarm Signal

Back 345

A signal indicating an emergency condition or an alert that requires action. (SIG-FUN)

Front 346

Alarm Signals

Back 346

A signal indicating an unauthorized event at a protected premises.

Front 347

Alarm Time

Back 347

The point of receipt of the emergency alarm at the public safety answering point to the point where sufficient information is known to the dispatcher to deploy applicable units to the emergency.

Front 348

Alarm Verification Feature

Back 348

A feature of automatic fire detection and alarm systems to reduce unwanted alarms wherein smoke detectors report alarm conditions for a minimum period of time, or confirm alarm conditions within a given time period after being reset, in order to be accepted as a valid alarm initiation signal. (SIG-PRO)

Front 349

Alcohol-Resistant Foam

Back 349

Used for fighting fires involving water-soluble materials or fuels that are destructive to other types of foams. Some alcohol-resistant foams may be capable of forming a vapor-suppressing aqueous film on the surface of hydrocarbon fuels.

Front 350

Alcohol-Resistant Foam
Concentrate

Back 350

A concentrate used for fighting fires on water-soluble materials and other fuels destructive to regular, AFFF, or FFFP foams, as well as for fires involving hydrocarbons.

Front 351

Alcohol-Resistant Foam
Concentrate

Back 351

A concentrate used for fighting fires on water-soluble materials and other fuels destructive to regular, AFFF, or FFFP foams, as well as for fires involving hydrocarbons. [11, 2005]

Front 352

Alert Data Message (ADM)

Back 352

An analog or digital signal containing instructions for how a public alerting system alerting appliance (PASAA) is to deliver and, if capable, to acknowledge a public alert.

Front 353

Alert Tone

Back 353

An attention-getting signal to alert occupants of the pending transmission of a voice message. (SIG-PRO)

Front 354

Alignment

Back 354

To adjust components to bring about optimum or desired performance.

Front 355

Alkali Metals

Back 355

Cesium, francium, lithium, potassium, rubidium, sodium, and alloys of these metals, such as NaK.

Front 356

Alley

Back 356

Public space or thoroughfare less than 20 ft (6.1 m) wide, but not less than 10 ft (3050 mm) wide, that has been deeded or dedicated to the public for permanent public use.

Front 357

Alleyway

Back 357

An accessible clear space between storage piles or groups of piles suitable for housekeeping operations, visual inspection of piling areas, and initial fire-fighting operations.

Front 358

All Hazard

Back 358

Any incident or event, natural or human-caused, that warrants action to protect life, property, environment, public health, or safety, and to minimize disruption of government, social, or economic activities.

Front 359

Allied Processes

Back 359

Those processes using oxygen-fuel gas mixtures for operations such as scarfing, heat treating, heating, or thermal spraying.

Front 360

Allied Professional

Back 360

That person who possesses the knowledge, skills, and technical competence to provide assistance in the selection, implementation, and evaluation of mission-specific tasks at a hazardous materials weapons of mass destruction (WMD) incident.

Front 361

Allowable Stress Design

Back 361

A method of proportioning structural members such that elastically computed stresses produced in the members by nominal loads do not exceed specified allowable stresses (also called working stress design). [ASCE/SEI 7:1.2]

Front 362

All-Wheel Drive

Back 362

A vehicle with the ability to apply tractive power to all wheels.

Front 363

Alpha Particle

Back 363

A positively charged particle emitted by certain radioactive materials, identical to the nucleus of a helium atom.

Front 364

Alter/Alteration

Back 364

A modification, replacement, or other physical change to an existing facility.

Front 365

Alteration

Back 365

A change or modification that results in a deviation from the original design specifications or criteria.

Front 366

Alteration

Back 366

For road tunnels, bridges, and limited access highways, a modification, replacement, or other physical change to an existing facility.

Front 367

Alteration (Accessibility)

Back 367

A change to a building or facility that affects or could affect the accessibility of the building or facility or part thereof.

Front 368

Alternate Air Source

Back 368

A secondary air supply source system that involves an alternate second-stage regulator provided by either a separate dedicated
second-stage or a multipurpose second-stage regulator coupled with a buoyancy compensator inflator valve.

Front 369

Alternate Communications
Center

Back 369

A structure used to house a part of the control equipment of an emergency reporting system or communications system; also, a normally unattended facility that is remote from the communications center and is used to house equipment necessary for the functioning of an emergency communications system.

Front 370

Alternate Power Source

Back 370

One or more generator sets, or battery systems where permitted, intended to provide power during the interruption of the normal electrical service; or the public utility electrical service intended to provide power during interruption of service normally provided by the generating facilities on the premises. (ELS)

Front 371

Alternate Power Source

Back 371

One or more generator sets, or battery systems where permitted, intended to provide power during the interruption of the normal electrical services or the public utility electrical service intended to provide power during interruption of service normally provided by the generating facilities on the premises.

Front 372

Alternating Current (ac) Grounded Conductor

Back 372

A current-carrying conductor that is intentionally maintained at ground potential.

Front 373

Alternating Current (ac) Grounding Conductor (green or green with yellow stripe)

Back 373

A conductor, not normally carrying current, used to connect the metallic non-current carrying parts of electrical equipment to the ac system and engine negative terminal, or its bus, and to the shore ac grounding conductor through the shore power cable.

Front 374

Alternating-Current (ac) Module (Alternating- Current Photovoltaic Module)

Back 374

A complete, environmentally protected unit consisting of solar cells, optics, inverter, and other components, exclusive of tracker, designed to generate ac power when exposed to sunlight.

Front 375

Alternating-Current Power Distribution Box (Alternating-Current Plugging Box, Scatter Box)

Back 375

An ac distribution center or box that contains one or more grounding-type polarized receptacles that may contain overcurrent protective devices.

Front 376

Alternative

Back 376

A system, condition, arrangement, material, or equipment submitted for approval to the authority having jurisdiction and the fire chief as a substitute for a code requirement.

Front 377

Alternative

Back 377

A system, condition, arrangement, material, or equipment submitted to the authority having jurisdiction as a substitute for a requirement in a standard.

Front 378

Alternative Calculation
Procedure

Back 378

A calculation procedure that differs from the procedure originally employed by the design team but that provides predictions for the same variables of interest.

Front 379

Alternative Calculation
Procedure

Back 379

A calculation procedure that differs from the procedure originally employed by the design team but that provides predictions for the same variables of interest. [101, 2003]

Front 380

Alternative Calculation
Procedure

Back 380

A calculation procedure that differs from the procedure originally employed by the design team but that provides predictions for the same variables of interest. [101, 2006]

Front 381

Alternative Calculation
Procedure

Back 381

A calculation procedure that differs from the procedure originally employed by the design team but that provides predictions for the same variables of interest. [101, 2009]

Front 382

Alternative Fuel

Back 382

A motor vehicle fuel other than gasoline and diesel.

Front 383

Alternative Fuels

Back 383

Solid fuels such as municipal solid waste (MSW), refuse derived fuel (RDF), biomass, rubber tires, and other combustibles that are used instead of fossil fuels (gas, oil, or coal) in a boiler to produce steam for the generation of electrical energy.

Front 384

Alternative Shutdown
Capability

Back 384

The ability to safely shut down the reactor and maintain shutdown using equipment and processes outside the normal reactor shutdown process.

Front 385

Alternative Water Supply

Back 385

Water supplies provided to meet the minimum fire flow/duration requirements where no municipal-type water system exists or to supplement an inadequate municipal-type water supply.

Front 386

Aluminum

Back 386

A lightweight metal used extensively in the construction of aircraft airframes and skin sections.

Front 387

Aluminum Fines

Back 387

The fraction of an aluminum powder that is 45 µm (microns) (325 mesh) or smaller in nominal diameter, either as a discrete particle or as agglomerates of discrete particles.

Front 388

Aluminum Paste

Back 388

Aluminum flake pigment homogeneously incorporated in a solid or liquid carrier in such a way so as to have a nonflowing product without a free-flowing liquid.

Front 389

Aluminum Powder

Back 389

Aluminum powder is divided into three broad classifications:
atomized, flake, and granules.

Front 390

Ambient

Back 390

For the purposes of this standard, the temperature of the room in which the test is being conducted.

Front 391

Ambient

Back 391

Someone’s or something’s surroundings, especially as they pertain to the local environment; for example, ambient air and ambient temperature.

Front 392

Ambient Atmosphere

Back 392

The pressure and composition of the environment surrounding a chamber. [99, 2005 (HYP)]

Front 393

Ambient Atmosphere

Back 393

The pressure and composition of the environment surrounding a chamber. (HYP)

Front 394

Ambient Pressure

Back 394

Refers to total pressure of the environment referenced. [99, 2005 (HYP)]

Front 395

Ambient Pressure

Back 395

Refers to total pressure of the environment referenced. (HYP)

Front 396

Ambient Temperature

Back 396

An assumed air temperature at the exposed face of the door at or near 75°F (24°C).

Front 397

Ambient Temperature

Back 397

The temperature of the air or other medium where the equipment is to be used.

Front 398

Ambient Temperature

Back 398

The temperature of the surrounding medium; usually used to refer to the temperature of the air in which a structure is situated or a device operates.

Front 399

Ambient Temperature

Back 399

The temperature of the surrounding medium; usually used to refer to the temperature of the air in which a structure is situated or a device operates. [414, 2007]

Front 400

Ambient Vaporizer

Back 400

A vaporizer that derives heat for vaporization from a naturally occurring heat source such as the atmosphere, seawater, or geothermal waters. If the naturally occurring heat source is separated from the actual vaporizing heat exchanger and a controllable heat transport medium is used between the heat source and the vaporizing exchanger, the vaporizer shall be considered to be a remote heated vaporizer.

Front 401

Ambient Vaporizer

Back 401

A vaporizer that derives its heat from naturally occurring heat sources, such as the atmosphere, seawater, or geothermal waters.

Front 402

Ambulance

Back 402

A vehicle designed, equipped, and operated for the treatment and transport of ill and injured persons.

Front 403

Ambulance Service

Back 403

An organization that exists to provide patient transportation by ambulance.

Front 404

Ambulatory Health Care
Center

Back 404

A building or portion thereof used to provide services or treatment simultaneously to four or more patients that (1) provides, on an outpatient basis, treatment for patients that renders the patients incapable of taking action for self-preservation under emergency conditions without the assistance of others; or (2) provides, on an outpatient basis, anesthesia that renders the patients incapable of taking action for self-preservation under emergency conditions without the assistance of others. (ADM)

Front 405

Ambulatory Health Care
Occupancy

Back 405

A building or portion thereof used to provide services or treatment simultaneously to four or more patients that provides, on an outpatient basis, one or more of the following:

Front 406

Ambulatory Health Care
Occupancy

Back 406

A building or portion thereof used to provide services or treatment simultaneously to four or more patients that provides, on an outpatient basis, one or more of the following: (1) treatment for patients that renders the patients incapable of taking action for
self-preservation under emergency conditions without the assistance of others; (2) anesthesia that renders the patients incapable of taking action for self-preservation under emergency conditions without the assistance of others; (3) emergency or urgent care for patients who, due to the nature of their injury or illness, are incapable of taking action for self-preservation under emergency conditions without the assistance of others. [101, 2006]

Front 407

Ambulatory Health Care
Occupancy

Back 407

An occupancy used to provide services or treatment simultaneously to four or more patients that provides, on an outpatient basis, one or more of the following: (1) treatment for patients that renders the patients incapable of taking action for self-preservation under emergency conditions without the assistance of others; (2) anesthesia that renders the patients incapable of taking action for
self-preservation under emergency conditions without the assistance of others; (3) emergency or urgent care for patients who, due to the nature of their injury or illness, are incapable of taking action for
self-preservation under emergency conditions without the assistance of others.

Front 408

Ambulatory Health Care
Occupancy

Back 408

An occupancy used to provide services or treatment simultaneously to four or more patients that provides, on an outpatient basis, one or more of the following: (1) treatment for patients that renders the patients incapable of taking action for self-preservation under emergency conditions without the assistance of others; (2) anesthesia that renders the patients incapable of taking action for
self-preservation under emergency conditions without the assistance of others; (3) emergency or urgent care for patients who, due to the nature of their injury or illness, are incapable of taking action for
self-preservation under emergency conditions without the assistance of others [101, 2009]

Front 409

Ambush Alarm Initiating
Device

Back 409

An initiating device or procedure that personnel authorized to disarm the intrusion system at a protected premises can use to transmit a signal indicating a forced disarming of an intrusion detection system.

Front 410

American College of Emergency Physicians (ACEP)

Back 410

A national organization of emergency medical physicians.

Front 411

American Society for Nondestructive Testing (ASNT)

Back 411

A professional organization that is devoted to promoting knowledge of nondestructive testing.

Front 412

American Welding Society
(AWS)

Back 412

An association that provides codes, guidelines, and standards utilized to evaluate welded structures and components in welded structures.

Front 413

Ammonium Nitrate

Back 413

A chemical compound represented by the formula NH4NO3.

Front 414

Ampacity

Back 414

The current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.

Front 415

Ampacity

Back 415

The current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating. [70:100]

Front 416

Ampacity

Back 416

The current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating. [70,
2008]

Front 417

Ampacity

Back 417

The current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating. [70, Article 100]

Front 418

Ampacity

Back 418

The current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating. (ELS)

Front 419

Ampere

Back 419

The unit of electric current that is equivalent to a flow of one coulomb per second; one coulomb is defined as 6.24 × 1018 electrons.

Front 420

Anaerobic Digestion

Back 420

A unit process designed to biologically convert organic matter (sludge) through the action of microorganisms in the absence of elemental oxygen.

Front 421

Anaerobic Waste Treatment

Back 421

A unit process providing treatment of the liquid stream by action of microorganisms in the absence of elemental oxygen, the process
by-products of which include a gas containing methane, carbon dioxide, and small quantities of hydrogen sulfide

Front 422

Analog Initiating Device
(Sensor)

Back 422

An initiating device that transmits a signal indicating varying degrees of condition as contrasted with a conventional initiating device, which can only indicate an on-off condition. (SIG-IDS)

Front 423

Analyze

Back 423

The process of identifying a hazardous materials/weapons of mass destruction (WMD) problem and determining likely behavior and harm within the training and capabilities of the emergency responder.

Front 424

Analyzer Room or Building

Back 424

A specific room or building containing analyzers, one or more of which is piped to the process.

Front 425

Anchor

Back 425

A device designed to engage the bottom of a waterway and, through its resistance to drag, maintain a vessel within a given radius.

Front 426

Anchor

Back 426

A device for attaching frames to the surrounding structure.

Front 427

Anchor

Back 427

A device placed at the manufactured home site designed to transfer home anchoring loads to the ground.

Front 428

Anchorage

Back 428

An area identified for safe anchoring.

Front 429

Anchor Building

Back 429

A building housing any occupancies having low or ordinary hazard contents and having direct access to a mall building, but having all required means of egress independent of the mall.

Front 430

Anchor Building

Back 430

A building housing any occupancy having low or ordinary hazard contents and having direct access to a mall building, but having all required means of egress independent of the mall.

Front 431

Anchor Chocks

Back 431

Fittings on a deck of a vessel used to stow an anchor when it is not in use.

Front 432

Anchoring Equipment

Back 432

Ties, straps, cables, turnbuckles, chains, and other approved components, including tensioning devices, that are used to secure a manufactured home to anchors.

Front 433

Anchoring System

Back 433

A combination of anchoring equipment and anchors that will, when properly designed and installed, resist the uplift, overturning, and lateral forces on the manufactured home.

Front 434

Anchor Point

Back 434

A single, structural component used either alone or in combination with other components to create an anchor system capable of sustaining the actual and potential load on the rope rescue system.

Front 435

Anchor Point

Back 435

A single, structural component used either alone or in combination with other components to create an anchor system capable of sustaining the actual and potential load on the rope rescue system. [1670, 2004]

Front 436

Anchor Rode

Back 436

The line connecting an anchor with a vessel.

Front 437

Anchor Store

Back 437

A department store or major merchandising center that has direct access to the covered mall but in which all required means of egress is independent of the covered mall. [101B:3.3]

Front 438

Anchor System

Back 438

One or more anchor points rigged in such a way as to provide a structurally significant connection point for rope rescue system components.

Front 439

Anchor System

Back 439

One or more anchor points rigged in such a way as to provide a structurally significant connection point for rope rescue system components. [1670, 2004]

Front 440

Ancillary Area/Ancillary Space

Back 440

The nonpublic areas or spaces of the stations usually used to house or contain operating, maintenance, or support equipment and
functions.

Front 441

Ancillary Boom Ladder

Back 441

A ladder or ladders affixed to a telescoping or articulating boom section.

Front 442

Ancillary Facility(ies)

Back 442

A structure(s) usually used to house or contain operating, maintenance, or support equipment and functions.

Front 443

Ancillary Functions

Back 443

Monitored points that are not security points but are incorporated into an electronic premises security system or outputs that are not necessary to the function of the electronic premises security system.

Front 444

Ancillary Structure

Back 444

A structure that is an integral part of the wastewater treatment or collection process.

Front 445

Anesthetic

Back 445

As used in this standard, applies to any inhalation agent used to produce relative analgesia or general anesthesia. (GAS)

Front 446

Anesthetizing Location

Back 446

Any area of a facility that has been designated to be used for the administration of any flammable or nonflammable inhalation anesthetic agent in the course of examination or treatment, including the use of such agents for relative analgesia.

Front 447

Anesthetizing Location

Back 447

Any area of a facility that has been designated to be used for the administration of nonflammable inhalation anesthetic agents in the course of examination or treatment, including the use of such agents for relative analgesia. (See also 3.3.158, Relative Analgesia.) (GAS)

Front 448

ANFO (Ammonium Nitrate
Fuel Oil Mixture)

Back 448

A blasting agent (Explosive 1.5D) that contains no essential ingredients other than prilled ammonium nitrate and fuel oil.

Front 449

Angle of Approach

Back 449

The measure of the steepest ramp that a fully loaded vehicle can approach.

Front 450

Angle of Approach

Back 450

The smallest angle made between the road surface and a line drawn from the front point of ground contact of the front tire to any projection of the apparatus in front of the front axle.

Front 451

Angle of Approach

Back 451

The smallest angle made between the road surface and a line drawn from the front point of ground contact of the front tire to any projection of the apparatus in front of the front axle.
[1901, 2003]

Front 452

Angle of Departure

Back 452

The measure of the steepest ramp from which the fully loaded vehicle can depart.

Front 453

Angle of Departure

Back 453

The smallest angle made between the road surface and a line drawn from the rear point of ground contact of the rear tire to any projection of the apparatus behind the rear axle.

Front 454

Angle of Departure

Back 454

The smallest angle made between the road surface and a line drawn from the rear point of ground contact of the rear tire to any projection of the apparatus behind the rear axle. [1901, 2003]

Front 455

Angle of Departure

Back 455

The smallest angle made between the road surface and the line drawn from the rear point of ground contact of the rear tire to any
projection of the apparatus behind the rear axle.

Front 456

Angle of Inclination

Back 456

The angle incorporated between the beams and a level plane.

Front 457

Angle of Inclination

Back 457

The angle incorporated between the beams and a level plane. [1931:3.3]

Front 458

Angle Wall

Back 458

An exterior wall that intersects with a high challenge fire wall at an angle of 135 degrees or less at the end of the high challenge fire wall. (See Figure 5.16.3.1).

Front 459

Animal

Back 459

For the purposes of this standard, an air-breathing vertebrate.

Front 460

Animal Handler

Back 460

A person responsible for the handling, grooming, and care of confined animals, or reasonably expected to assist in their handling and evacuation in case of emergency.

Front 461

Animal Housing Facility

Back 461

Area of a building or structure, including interior and adjacent exterior spaces, where animals are fed, rested, worked, exercised, treated, exhibited, or used for production.

Front 462

Annunciator

Back 462

A device indicating an off-standard or abnormal condition by both visual and audible signals.

Front 463

Annunciator

Back 463

A unit containing one or more indicator lamps, alphanumeric
displays, computer monitor, or other equivalent means on which each
indication provides status information about a circuit, condition,
system, or location.

Front 464

Annunciator

Back 464

A unit containing one or more indicator lamps, alphanumeric displays, or other equivalent means in which each indication provides status information about a circuit, condition, or location. (SIG-FUN)

Front 465

Annunciator

Back 465

The component designed to emit audible signals.

Front 466

Anode

Back 466

A metal that in an electrolyte assumes a more electronegative charge than the one to which it is coupled. (See also 3.3.14, Cathode.)

Front 467

Anodeless Riser

Back 467

An assembly of steel-cased plastic pipe used to make the transition between plastic piping installed underground and metallic piping installed aboveground.

Front 468

Anodeless Riser

Back 468

A transition assembly where polyethylene or polyamide pipe or tubing is permitted to be installed underground and is terminated above ground outside of a building.

Front 469

Anoxia

Back 469

A state of markedly inadequate oxygenation of the tissues and blood, of more marked degree than hypoxia. [99, 2005 (HYP)]

Front 470

Anoxia

Back 470

A state of markedly inadequate oxygenation of the tissues and blood, of more marked degree than hypoxia. (HYP)

Front 471

ANSI

Back 471

American National Standards Institute.

Front 472

ANSI

Back 472

American National Standards Institute. [52, 2006]

Front 473

ANSI/ASME

Back 473

The designation for American National Standards Institute publication sponsored and published by the American Society of Mechanical Engineers.

Front 474

Antenna

Back 474

A device connected to a radio receiver, transmitter, or transceiver that radiates the transmitted signal, receives a signal, or both.

Front 475

Antiflooding Device

Back 475

A safety control that causes the flow of (liquid) fuel to be shut off when a rise in fuel level occurs or when excess fuel is received and that operates before the hazardous discharge of fuel can occur.

Front 476

Antifreeze Sprinkler System

Back 476

A wet pipe sprinkler system employing automatic sprinklers that are attached to a piping system that contains an antifreeze solution and that are connected to a water supply. The antifreeze solution is discharged, followed by water, immediately upon operation of sprinklers opened by heat from a fire.

Front 477

Antifreeze Sprinkler System

Back 477

A wet pipe sprinkler system employing automatic sprinklers that are attached to a piping system that contains an antifreeze solution and that are connected to a water supply. The antifreeze solution is discharged, followed by water, immediately upon operation of sprinklers opened by heat from a fire. [13, 2007]

Front 478

Antifreeze Sprinkler System

Back 478

A wet pipe sprinkler system employing automatic sprinklers that are attached to a system that contains an antifreeze solution and that are connected to a water supply. The antifreeze solution, followed by water, discharges immediately from sprinklers opened by a fire.

Front 479

Anti-Siphon Trap Vent Device

Back 479

A device that automatically opens to admit air to a fixture drain above the connection of the trap arm so as to prevent siphonage and closes tightly when the pressure within the drainage system is equal to or greater than atmospheric pressure so as to prevent the escape of gases from the drainage system into the recreational vehicle.

Front 480

Antistatic

Back 480

Capable of dissipating a static electric charge at an acceptable rate.

Front 481

Antistatic

Back 481

For the purpose of this standard, having a surface resistivity less than 1.0
× 1011 ohms per square or having a charge decay rate from 5000 volts to
500 volts of less than 0.5 second when tested at 23°C (73°F) and
30 percent relative humidity.

Front 482

Apartment Building

Back 482

A building or portion thereof containing three or more dwelling units with independent cooking and bathroom facilities.

Front 483

Apartment Building

Back 483

A building or portion thereof containing three or more dwelling units with independent cooking and bathroom facilities. [101:3.3]

Front 484

Apartment Building

Back 484

A building or portion thereof containing three or more dwelling units with independent cooking and bathroom facilities.
[5000, 2009]

Front 485

Apartment Building

Back 485

A building or portion thereof containing three or more dwelling units with independent cooking and bathroom facilities. (SIG-HOU)

Front 486

API

Back 486

American Petroleum Institute.

Front 487

API

Back 487

American Petroleum Institute. [58, 2008]

Front 488

API-ASME Container (or
Tank)

Back 488

A container constructed in accordance with the pressure vessel code jointly developed by the American Petroleum Institute and the American Society of Mechanical Engineers.

Front 489

Apparatus

Back 489

A motor-driven vehicle or group of vehicles designed and constructed for the purpose of fighting fires.

Front 490

Apparatus

Back 490

A motor-driven vehicle or group of vehicles designed and constructed for the purpose of fighting fires. [1143:3.3]

Front 491

Apparatus

Back 491

Furniture, chemical fume hoods, centrifuges, refrigerators, and commercial or made-on-site equipment used in a laboratory.

Front 492

Apparatus Casing Plenum

Back 492

A sheet metal construction attached directly to a fan enclosure, fan coil unit, air-handling unit, or furnace bonnet for the purpose of connecting distribution ducts.

Front 493

Appliance

Back 493

Any device that utilizes gas as a fuel or raw material to produce light, heat, power, refrigeration, or air conditioning.

Front 494

Appliance

Back 494

Utilization equipment, generally other than industrial, normally built in standardized sizes or types, that is installed or connected as a unit to perform one or more functions. (ELE)

Front 495

Appliance

Back 495

Utilization equipment, generally other than industrial, normally built in standardized sizes or types, that is installed or connected as a unit to perform one or more functions such as clothes washing, air conditioning, food mixing, deep frying, and so forth.

Front 496

Appliance

Back 496

Utilization equipment, generally other than industrial, that is normally built in standardized sizes or types and is installed or connected as a unit to perform one or more functions such as clothes washing, air conditioning, food mixing, deep frying, and so forth.

Front 497

Appliance

Back 497

Utilization equipment, generally other than industrial, that is normally built in standardized sizes or types and is installed or connected as a unit to perform one or more functions such as clothes washing, air conditioning, food mixing, deep frying, and so forth.
[70, 2008]

Front 498

Appliance

Back 498

Utilization equipment, normally built in standardized sizes or types, that
is installed or connected as a unit to perform one or more functions such
as clothes washing, air conditioning, food mixing, cooking, heating, or
refrigeration.

Front 499

Appliance Casing (or Jacket)

Back 499

An enclosure forming the outside of the appliance.

Front 500

Appliance Categorized Vent
Diameter/Area

Back 500

The minimum vent diameter/area permissible for Category I appliances to maintain a nonpositive vent static pressure when tested in accordance with nationally recognized standards.

Front 501

Appliance, Fixed

Back 501

An appliance that is fastened or otherwise secured at a specific location.

Front 502

Appliance Flue

Back 502

The flue passage within an appliance.

Front 503

Appliance Flue

Back 503

The passage(s) within an appliance through which combustion products pass from the combustion chamber of the appliance to the draft hood inlet opening on an appliance equipped with a draft hood or to the outlet of the appliance on an appliance not equipped with a draft hood.

Front 504

Appliance Flue Outlet

Back 504

The opening or openings in a cooking device where vapors, combustion gases, or both leave the cooking device.

Front 505

Appliance, Portable

Back 505

An appliance that is actually moved or can easily be moved from one place to another in normal use.

Front 506

Appliance Regulator

Back 506

A pressure regulator for controlling pressure to the appliance manifold.

Front 507

Appliance Shutoff Valve

Back 507

A valve located in the piping system used to shut off individual equipment.

Front 508

Appliance, Stationary

Back 508

An appliance that is not easily moved from one place to another in normal use.

Front 509

Applicable Codes and
Standards

Back 509

Those codes and standards that are legally adopted and enforced by a jurisdiction at the time of construction of an occupancy or installation of a system or of equipment. These applicable codes and standards
can include ordinances, statutes, regulations, or other legal documents adopted by the jurisdiction.

Front 510

Applicable Codes and
Standards

Back 510

Those codes and standards that are legally adopted and enforced by a jurisdiction at the time of construction of an occupancy or installation of a system or of equipment. These applicable codes and standards
can include ordinances, statutes, regulations, or other legal documents adopted by the jurisdiction. [1031, 2003]

Front 511

Application Rate

Back 511

Amount of water additive solution applied over a specified period of time.

Front 512

Applicator

Back 512

A means of applying high-frequency energy to a patient other than by an electrically conductive connection. (ELE)

Front 513

Apply Sufficient Suppressant
(Automatically)

Back 513

Automatically perform suppressive action in response to automatic
detection.

Front 514

Apply Sufficient Suppressant
(to Manually Suppress)

Back 514

Manually perform suppressive action given response to the proper site.

Front 515

Approach Way

Back 515

A structure used to gain access to a pier or wharf but not used to moor barges or vessels.

Front 516

Approved

Back 516

Acceptable to the authority having jurisdiction.

Front 517

Approved Existing

Back 517

That which is already in existence on the date this edition of the Code
goes into effect and is acceptable to the authority having jurisdiction.

Front 518

Approved Production Facility

Back 518

An existing building, portion of a building, or group of buildings renovated, modified, or reconstructed for use by the entertainment industry and approved by the authority having jurisdiction for the purposes of motion picture, television, or commercial production.

Front 519

Appurtenance

Back 519

An accessory or a subordinate part that enables the primary device to perform or improves its intended function.

Front 520

Appurtenance

Back 520

An accessory or attachment that enables the private fire service main to perform its intended function.

Front 521

Appurtenance

Back 521

An accessory or attachment that enables the private fire service main to perform its intended function. [24, 2007]

Front 522

Aqueous Film-Forming Foam
(AFFF)

Back 522

A concentrated aqueous solution of one or more hydrocarbon and/or fluorochemical surfactants that forms a foam capable of producing a vapor-suppressing, aqueous film on the surface of hydrocarbon fuels.

Front 523

Aqueous Film-Forming Foam
Concentrate (AFFF)

Back 523

A concentrate based on fluorinated surfactants plus foam stabilizers and usually diluted with water to a 1 percent, 3 percent, or 6 percent solution.

Front 524

Aqueous Film-Forming Foam
(AFFF) Concentrate

Back 524

A concentrated aqueous solution of fluorinated surfactant(s) and foam stabilizers that is capable of producing an aqueous fluorocarbon film on the surface of hydrocarbon fuels to suppress vaporization.

Front 525

Aqueous Film-Forming Foam
(AFFF) Concentrate

Back 525

A concentrated aqueous solution of one or more hydrocarbon or fluorochemical surfactants that forms a foam capable of producing a vapor-suppressing aqueous film on the surface of hydrocarbon fuels. The foam produced from AFFF concentrates is dry-chemical compatible and is therefore suitable for use in combination with that agent.

Front 526

Aqueous Film Forming Foam
(AFFF) Concentrate

Back 526

This concentrate is based on fluorinated surfactants plus foam stabilizers and usually is diluted with water to a 1 percent, 3 percent, or 6 percent solution. [16, 2007]

Front 527

Aqueous Film-Forming Foam
Concentrate (AFFF)

Back 527

A concentrate based on fluorinated surfactants plus foam stabilizers and usually diluted with water to a 1 percent, 3 percent, or 6 percent solution. [11, 2005]

Front 528

Aquifer

Back 528

An underground formation that contains sufficient saturated permeable material to yield significant quantities of water.

Front 529

Aquifer Performance Analysis

Back 529

A test designed to determine the amount of underground water available in a given field and proper well spacing to avoid interference in that field. Basically, test results provide information concerning transmissibility and storage coefficient (available volume of water) of the aquifer.

Front 530

Arc

Back 530

A high-temperature luminous electric discharge across a gap.

Front 531

Arc

Back 531

A high-temperature luminous electric discharge across a gap or through a medium such as charred insulation.

Front 532

Arc-Fault Circuit Interrupter

Back 532

A device intended to provide protection from the effects of arc faults by recognizing characteristics unique to arcing and by functioning to de-energize the circuit when an arc fault is detected. [70, 2005]

Front 533

Arc Flash Hazard

Back 533

A dangerous condition associated with the possible release of energy caused by an electric arc.

Front 534

Arc Flash Hazard Analysis

Back 534

A study investigating a worker’s potential exposure to arc-flash energy, conducted for the purpose of injury prevention and the
determination of safe work practices, arc flash protection boundary, and the appropriate levels of PPE.

Front 535

Arc Flash Suit

Back 535

A complete FR clothing and equipment system that covers the entire body, except for the hands and feet. This includes pants, jacket, and beekeeper-type hood fitted with a face shield.

Front 536

Arch

Back 536

The bottom curve of the foot, from the heel to the ball.

Front 537

Archival Material/Record

Back 537

A record that was created or received and accumulated by a person or organization in the course of the conduct of affairs and that has been preserved because of its historical or continuing value.

Front 538

Archive

Back 538

An independent facility or area within a records center, designed for the protection of archival materials and records, typically designed to be fire resistive.

Front 539

Arcing Through Char

Back 539

Arcing associated with a matrix of charred material (e.g., charred conductor insulation) that acts as a semiconductive medium.

Front 540

Arc Rating

Back 540

The value attributed to materials that describes their performance to exposure to an electrical arc discharge. The arc rating is expressed in cal/cm2 and is derived from the determined value of the arc thermal performance value (ATPV) or energy of breakopen threshold (EBT) (should a material system exhibit a breakopen response below the ATPV value) derived from the determined value of ATPV or EBT.

Front 541

Area Alarm System

Back 541

A warning system within an area of use that provides continuous
visible and audible surveillance of Level 1 and Level 2 medical gas and
vacuum systems. (PIP)

Front 542

Area Command

Back 542

An organization established to oversee the management of multiple incidents that are each being handled by an incident command system (ICS) organization, or to oversee the management of large or multiple incidents to which several incident management teams have been assigned.

Front 543

Area Command (Unified Area
Command)

Back 543

Area Command is either to oversee the management of multiple incidents that are each being handled by a separate ICS organization or to oversee the management of a very large or complex incident that has multiple incident management teams engaged or a large planned event.

Front 544

Area of Administration

Back 544

Any point within a room within 4.3 m (15 ft) of oxygen equipment or an enclosure containing or intended to contain an oxygen-enriched atmosphere. (GAS)

Front 545

Area of Origin

Back 545

The room or area where a fire began. [921, 2004]

Front 546

Area of Origin

Back 546

The room or area where a fire began. (See also 3.3.122, Point of Origin.)

Front 547

Area of Refuge

Back 547

An area that is either (1) a story in a building where the building is protected throughout by an approved, supervised automatic sprinkler system and has not less than two accessible rooms or spaces separated from each other by smoke-resisting partitions; or (2) a space located in a path of travel leading to a public way that is protected from the effects of fire, either by means of separation from other spaces in the same building or by virtue of location, thereby permitting a delay in egress travel from any level.

Front 548

Area of Refuge

Back 548

In merchant vessels, an area of refuge means an area that is separated from the effects of fire and flooding where passengers and crew can gather to await disembarking in the event of fire or flooding. To
qualify as an area of refuge, the area must provide separation from the effect of fire and flooding for the maximum amount of time required to complete disembarking of the vessel, or 1 hour, whichever is less.

Front 549

Area of Sport Activity
(Accessibility)

Back 549

That portion of a room or space where the play or practice of a sport takes place.

Front 550

ARFF Chassis

Back 550

The assembled frame, engine, drive train, and tires of a vehicle.

Front 551

ARFF Personnel

Back 551

Personnel actively engaged in the pursuit of rescue and fire fighting at the scene of an airport incident.

Front 552

ARFF Personnel

Back 552

Personnel under the operational jurisdiction of the chief of the airport fire department assigned to aircraft rescue and fire fighting.

Front 553

Arid

Back 553

An area subject to 15 in. (381 mm) or less of annual rainfall.

Front 554

Arm

Back 554

That sequence of control system functions for the establishing of a source of ignition that must be complete and verified immediately before the firing of the flame effect.

Front 555

Arm

Back 555

To render an igniter from a safe (no energy) condition to a ready-to-fire condition.

Front 556

Armored Cable, Type AC

Back 556

A fabricated assembly of insulated conductors in a flexible metallic enclosure. See 320.100.

Front 557

Arm-over

Back 557

A horizontal pipe that extends from the branch line to a single sprinkler or a sprinkler above and below a ceiling.

Front 558

Array

Back 558

A mechanically integrated assembly of modules or panels with a support structure and foundation, tracker, and other components, as required, to form a direct-current power-producing unit.

Front 559

Arrival

Back 559

The point at which a vehicle is stopped on the scene of a response destination or address.

Front 560

Arrived at Destination

Back 560

The time that the responding unit arrived at the hospital or transfer point.

Front 561

Arrow Pattern

Back 561

A fire pattern displayed on the cross-section of a burned wooden structural member.

Front 562

Arson

Back 562

The crime of maliciously and intentionally, or recklessly, starting a fire or causing an explosion.

Front 563

Arson

Back 563

The crime of maliciously and intentionally, or recklessly, starting a fire or causing an explosion. [921, 2004]

Front 564

Articulating Boom

Back 564

An aerial device consisting of two or more folding boom sections whose extension and retraction modes are accomplished by adjusting the angle of the knuckle joints.

Front 565

Articulating Boom

Back 565

An aerial device consisting of two or more folding boom sections whose extension and retraction modes are accomplished by adjusting the angle of the knuckle joints. [1901, 2003]

Front 566

Artificial Barricade

Back 566

An artificial mound or revetted wall of earth of a minimum thickness of 0.9 m (3 ft).

Front 567

Artificial Barricade

Back 567

An artificial mound or revetted wall of earth of a minimum thickness of 3 ft (0.9 m).

Front 568

Artificial Barricade
(Explosives or Fireworks)

Back 568

An artificial mound or revetted wall of earth of a minimum thickness of 3 ft (0.9 m). [1124, 2006]

Front 569

Artificially Made Bodies of
Water

Back 569

Bodies of water that have been constructed or modified to fit some decorative or commercial purpose such as, but not limited to, aeration ponds, fish farm ponds, storm retention basins, treatment ponds, and irrigation (channel) facilities. Water depths may vary seasonally or be controlled.

Front 570

Artificial Sea Water

Back 570

A solution that consists of 1.10 percent magnesium chloride hexahydrate, 0.16 percent calcium chloride dihydrate, 0.40 percent anhydrous sodium sulfate, 2.50 percent sodium chloride, and
95.84 percent deionized or distilled water.

Front 571

Ascending Device

Back 571

A type of rope grab; auxiliary equipment; a friction or mechanical device utilized to allow ascending a fixed line.

Front 572

Ascending (Line)

Back 572

A means of safely traveling up a fixed line with the use of one or more ascent devices.

Front 573

Ascending (Line)

Back 573

A means of safely traveling up a fixed line with the use of one or more ascent devices. [1670, 2004]

Front 574

Ascent Device

Back 574

An auxiliary equipment system component; a friction or mechanical device utilized to allow ascending a fixed line.
[1670, 2004]

Front 575

Ascent Device

Back 575

An auxiliary equipment system component; a friction or mechanical device utilized to allow ascending a fixed line. [1983:1.3]

Front 576

Ash

Back 576

The solid residue that remains after combustion is complete.

Front 577

Ash Receptacle Door

Back 577

A door below the grade level providing access to the ash receptacle.

Front 578

Askarel

Back 578

A generic term for a group of nonflammable synthetic chlorinated hydrocarbons used as electrical insulating media. Askarels of various compositional types are used. Under arcing conditions, the gases produced, while consisting predominantly of noncombustible hydrogen chloride, can include varying amounts of combustible gases, depending on the askarel type.

Front 579

As Low As Reasonably
Achievable (ALARA)

Back 579

Making every reasonable effort to maintain exposures to radiation as far below the dose limits in this part (10 CFR 20) as is practical consistent with the purpose for which the licensed activity is undertaken, taking into account the state of technology, the economics of improvements in relation to state of technology, the economics of improvements in
relation to benefits to the public health and safety, and other societal and socioeconomic considerations, and in relation to utilization of nuclear energy and licensed materials in the public interest. [10 CFR 20]

Front 580

ASME

Back 580

American Society of Mechanical Engineers.

Front 581

ASME

Back 581

American Society of Mechanical Engineers. [58, 2004]

Front 582

ASME

Back 582

American Society of Mechanical Engineers. [58, 2008]

Front 583

ASME Code

Back 583

The American Society of Mechanical Engineers Boiler and Pressure Vessel
Code.

Front 584

ASME Code

Back 584

The American Society of Mechanical Engineers Boiler and Pressure Vessel
Code. [58, 2008]

Front 585

ASME Container

Back 585

A container constructed in accordance with the ASME Code.

Front 586

ASME Container

Back 586

A container constructed in accordance with the ASME Code. [58, 2008]

Front 587

ASME Pressure Vessel

Back 587

A pressure vessel used for the storage or accumulation of air or gas under pressure that is constructed and tested in accordance with the ASME Boiler and Pressure Vessel Code.

Front 588

ASME Pressure Vessel

Back 588

A pressure vessel used for the storage or accumulation of air or gas under pressure that is constructed and tested in accordance with the ASME Boiler and Pressure Vessel Code. [1901, 2003]

Front 589

Aspirate

Back 589

To draw in air; nozzle-aspirating systems draw air into the nozzle to mix with the foam solution.

Front 590

Assembly

Back 590

A unit or structure composed of a combination of materials or products, or both.

Front 591

Assembly

Back 591

The portion of the manufacturing process including, but not limited to, sewing, gluing, laminating, tacking, or other means of attaching whereby materials or component parts are put together to form a portion of the compliant product, or the complete compliant product.

Front 592

Assembly Area (Accessibility)

Back 592

For the purposes of this Code, a building or facility, or portion thereof, used for the purpose of entertainment, educational or civic
gatherings, or similar purposes including, but not limited to, classrooms, lecture halls, courtrooms, public meeting rooms, public hearing rooms, legislative chambers, motion picture houses, auditoria, theaters, playhouses, dinner theaters, concert halls, centers
for the performing arts, amphitheaters, arenas, stadiums, grandstands, or convention centers.

Front 593

Assembly Occupancy

Back 593

An occupancy (1) used for a gathering of 50 or more persons for deliberation, worship, entertainment, eating, drinking, amusement, awaiting transportation, or similar uses; or (2) used as a special amusement buildings, regardless of occupant load. [101:3.3]

Front 594

Assembly Occupancy

Back 594

An occupancy (1) used for a gathering of 50 or more persons for deliberation, worship, entertainment, eating, drinking, amusement, awaiting transportation, or similar uses; or (2) used as a special amusement building, regardless of occupant load.

Front 595

Assembly Occupancy

Back 595

An occupancy (1) used for a gathering of 50 or more persons for deliberation, worship, entertainment, eating, drinking, amusement, awaiting transportation, or similar uses; or (2) used as a special amusement building, regardless of occupant load.
[101, 2006]

Front 596

Assembly Occupancy

Back 596

An occupancy (1) used for a gathering of 50 or more persons for deliberation, worship, entertainment, eating, drinking, amusement, awaiting transportation, or similar uses; or (2) used as a special amusement building, regardless of occupant load.
[101, 2009]

Front 597

Assembly Occupancy

Back 597

An occupancy (1) used for a gathering of 50 or more persons for deliberation, worship, entertainment, eating, drinking, amusement, awaiting transportation, or similar uses; or (2) used as a special amusement building, regardless of occupant load.
[5000, 2006]

Front 598

Assessment

Back 598

A structured process by which relevant information is gathered for the purpose of determining specific child or family intervention needs.

Front 599

Assessment Phase (Size-Up)

Back 599

The process of assessing the conditions, the scene, and the subject’s condition and ability to assist in his or her own rescue.

Front 600

Assigned Resources

Back 600

Resources that are checked in and assigned to work tasks on an incident.

Front 601

Assignments

Back 601

Tasks given to resources to perform within a given operational period that are based on operational objectives defined in the Incident Action Plan (IAP).

Front 602

Assistant

Back 602

A person who works under the supervision of the pyrotechnic operator.

Front 603

Assistant

Back 603

Title for subordinates of the Command Staff positions.

Front 604

Assistant

Back 604

Title for subordinates of the command staff positions that indicates a level of technical capability, qualifications, and responsibility subordinate to the primary functions.

Front 605

Assistant

Back 605

Title for subordinates of the command staff positions; this title indicates a level of technical capability, qualifications, and responsibility subordinate to the primary functions. (See also
3.3.44.1.1, Assistant Health and Safety Officer, and 3.3.44.2.1, Assistant
Incident Safety Officer.) [1561, 2005]

Front 606

Assistant Health and Safety
Officer

Back 606

A member of the fire department assigned and authorized by the authority having jurisdiction to assist the fire department health and safety officer in the performance of their duties and responsibilities.

Front 607

Assistant Incident Safety
Officer

Back 607

An individual appointed to respond or assigned at an incident scene by the incident commander to assist the incident safety officer in the performance of the incident safety officer functions.

Front 608

Assisting Agency

Back 608

An agency or organization providing personnel, services, or other resources to the agency that has direct responsibility for incident management. See also 3.3.21, Cooperating Agency.

Front 609

Assistive Listening System
(ALS) (Accessibility)

Back 609

An amplification system utilizing transmitters, receivers, and coupling devices to bypass the acoustical space between a sound source and a listener by means of induction loop, radio frequency, infrared, or direct-wired equipment.

Front 610

Associated Apparatus

Back 610

Apparatus in which the circuits are not necessarily intrinsically safe themselves but that affect the energy in the intrinsically safe circuits and are relied on to maintain intrinsic safety. Associated apparatus may be either of the following:

Front 611

Associated Circuits of Concern

Back 611

Safety-related and non-safety-related circuits that are not directly required to perform a safe shutdown function and that do not have a required physical separation.

Front 612

Associated Nonincendive Field
Wiring Apparatus

Back 612

Apparatus in which the circuits are not necessarily nonincendive themselves but that affect the energy in nonincendive field wiring circuits and are relied upon to maintain nonincendive energy levels. Associated nonincendive field wiring apparatus may be either of the following: (1) Electrical apparatus that has an alternative type of protection for use in the approrpiate hazardous (classified) location; (2) Electrical apparatus not so protected that shall not be used in a hazardous (classified) location.

Front 613

ASTM

Back 613

American Society for Testing and Materials.

Front 614

ASTM

Back 614

American Society for Testing and Materials. [58, 2008]

Front 615

Athwartship

Back 615

Side to side, at right angles to the fore and aft centerline of a ship.

Front 616

Atmosphere

Back 616

The pressure exerted by, and gaseous composition of, an environment. [99, 2005 (HYP)]

Front 617

Atmosphere

Back 617

The pressure exerted by, and gaseous composition of, an environment. (HYP)

Front 618

Atmosphere Absolute (ATA)

Back 618

The pressure of the earth’s atmosphere, 760.0 mmHg, 101.325 kPa, or
14.7 psia. Two ATA = two atmospheres. (See also 3.3.14, Atmosphere.)
(HYP)

Front 619

Atmosphere Absolute (ATA)

Back 619

The pressure of the earth’s atmosphere, 760.0 mm Hg, 101.325 kPa, or 14.7 psia. Two ATA = two atmospheres. (See also 3.3.3, Atmosphere.) [99, 2005 (HYP)]

Front 620

Atmosphere Furnace

Back 620

A furnace built to allow heat processing of materials in a special processing atmosphere.

Front 621

Atmosphere of Increased
Burning Rate

Back 621

Any atmosphere containing a percentage of oxygen or oxygen and nitrous oxide greater than the quotient of 23.45 divided by the square root of the total pressure in atmospheres. [99, 2005 (HYP)]

Front 622

Atmosphere of Increased
Burning Rate

Back 622

Any atmosphere containing a percentage of oxygen or oxygen and nitrous oxide greater than the quotient of 23.45 divided by the square root of the total pressure in atmospheres. (HYP)

Front 623

Atmosphere-Supplying
Respirator

Back 623

A respirator that supplies the respirator user with breathing air from a source independent of the ambient atmosphere and includes
self-contained breathing apparatus (SCBA) and supplied air respirators (SAR). [See also 3.3.10, Combination SCBA/SAR; 3.3.40, Self-Contained Breathing Apparatus (SCBA); and 3.3.43, Supplied Air Respirator (SAR).]

Front 624

Atmosphere-Supplying
Respirator

Back 624

A respirator that supplies the respirator user with breathing air from a source independent of the ambient atmosphere; includes
self-contained breathing apparatus (SCBA) and supplied air respirators (SAR). [See also 3.3.12, Self-Contained Breathing Apparatus (SCBA), and 3.3.13, Supplied Air Respirator (SAR).]

Front 625

Atmosphere-Supplying
Respirator

Back 625

A respirator that supplies the respirator user with breathing air from a source independent of the ambient atmosphere, which includes
self-contained breathing apparatus (SCBA) and supplied air respirators (SAR). [See also 3.3.14, Self-Contained Breathing Apparatus (SCBA), and 3.3.16, Supplied Air Respirator (SAR).]

Front 626

Atmospheric Burner

Back 626

A burner used in a low-pressure fuel gas or atmospheric system that requires secondary air for complete combustion.

Front 627

Atmospheric Fluidized-Bed
Combustion

Back 627

A fuel-firing technique using a fluidized bed operating at near-atmospheric pressure on the fire side.

Front 628

Atmospheric Monitoring

Back 628

A method of evaluating the ambient atmosphere of a space, including but not limited to its oxygen content, flammability, and toxicity.

Front 629

Atmospheric Pressure

Back 629

The pressure of the weight of air on the surface of the earth, approximately 14.7 pounds per square inch (psia) (101 kPa absolute) at sea level.

Front 630

Atmospheric Tank

Back 630

A storage tank that has been designed to operate at pressures from atmospheric through 1.0 psig (760 mm Hg through 812 mm Hg) measured at the top of the tank.

Front 631

Atmospheric Tank

Back 631

A storage tank that has been designed to operate at pressures from atmospheric through a gauge pressure of 1.0 psi (6.9 kPa) (i.e., 760 mm Hg through 812 mm Hg) measured at the top of the tank.

Front 632

Atmospheric Tank

Back 632

A storage tank that has been designed to operate at pressures from atmospheric through a gauge pressure of 6.9 kPa (1.0 psig) (i.e., 760 mm Hg through 812 mm Hg) measured at the top of the tank. [30:3.3]

Front 633

Atmospheric Vents

Back 633

All points where pipes, stacks, or ducts are open to the atmosphere, including discharge points from emissions control devices, vent pipes from safety valves, vent pipes from filters or pumps, and other vents.

Front 634

Atomizer

Back 634

The device in a burner that breaks down liquid fuel into a finely divided state.

Front 635

Atomizing Burner

Back 635

A burner in which oil is divided into a fine spray by an atomizing agent, such as steam or air.

Front 636

Atomizing Medium

Back 636

A supplementary fluid, such as steam or air, that assists in breaking down liquid fuel into a finely divided state.

Front 637

Atomizing Medium Pressure
Switch

Back 637

A pressure-activated switch arranged to effect a safety shutdown or to prevent the oil burner system from being actuated in the event of inadequate atomizing medium pressure.

Front 638

Atrium

Back 638

A continuous series of deck openings connecting three or more deck levels within an accommodation space that is covered at the top of the series of openings and is used for purposes other than an enclosed stairway, elevator hoistway, escalator opening, or a utility trunk for pipe, cable, or ductwork.

Front 639

Atrium

Back 639

A large-volume space created by a floor opening or series of floor openings connecting two or more stories that is covered at the top of the series of openings and is used for purposes other than an enclosed stairway; an elevator hoistway; an escalator opening; or as a utility shaft used for plumbing, electrical, air-conditioning, or communications facilities.

Front 640

Atrium

Back 640

A large-volume space created by a floor opening or series of floor openings connecting two or more stories that is covered at the top of the series of openings and is used for purposes other than an enclosed stairway; an elevator hoistway; an escalator opening; or as a utility shaft used for plumbing, electrical, air-conditioning, or communications facilities. [101, 2009]

Front 641

Atrium

Back 641

A large-volume space created by a floor opening or series of floor openings connecting two or more stories that is covered at the top of the series of openings and is used for purposes other than as an enclosed stairway, elevator hoistway, escalator opening, or utility shaft used for plumbing, electrical, air conditioning, or communication facilities.

Front 642

Attached Building

Back 642

A building having only one common wall with another building having other types of occupancies.

Front 643

Attachment Plug (Plug Cap) (Plug)

Back 643

A device that, by insertion in a receptacle, establishes a connection between the conductors of the attached flexible cord and the conductors connected permanently to the receptacle.

Front 644

Attachment Plug (Plug Cap) (Plug)

Back 644

A device that, by insertion in a receptacle, establishes a connection between the conductors of the attached flexible cord and the conductors connected permanently to the receptacle. [70:100]

Front 645

Attachment Plug (Plug Cap) (Plug)

Back 645

A device that, by insertion in a receptacle, establishes a connection between the conductors of the attached flexible cord and the conductors connected permanently to the receptacle. [70, 2008]

Front 646

Attack Hose

Back 646

Hose designed to be used by trained fire fighters and fire brigade members to combat fires beyond the incipient stage.

Front 647

Attack Hose

Back 647

Hose designed to be used by trained fire fighters and fire brigade members to combat fires beyond the incipient stage. [1961, 2007]

Front 648

Attack Line

Back 648

A hose line used primarily to apply water directly onto a fire and operated by a sufficient number of personnel so that it can be maneuvered effectively and safely.

Front 649

Attendant

Back 649

A term used to describe a person who is qualified to be stationed outside one or more confined spaces, who monitors authorized entrants, and who performs specified duties.

Front 650

Attendant

Back 650

A term used to describe U.S. federally regulated industrial workers who are qualified to be stationed outside one or more confined spaces, who monitor authorized entrants, and who perform all of the following duties: (1) remain outside the confined space during entry operations until relieved by another attendant, (2) summon rescue and other needed resources as soon as the attendant determines that authorized entrants might need assistance to escape from confined space hazards, (3) perform nonentry rescues as specified by the rescue procedure listed on the permit.

Front 651

Attended Self-Service Motor
Fuel Dispensing Facility

Back 651

A motor fuel dispensing facility that has an attendant or employee on duty whenever the facility is open for business. The attendant or employee on duty does not typically dispense motor fuels into fuel tanks or containers. The customer or vehicle operator usually conducts the dispensing.

Front 652

Attic

Back 652

The space located between the ceiling of a story and the roof directly above that habitable story.

Front 653

Attic

Back 653

The space located between the ceiling of a story and the roof directly above the habitable story.

Front 654

Attic Extension Ladder

Back 654

An extension ladder that is specifically designed to be used to gain entry through a scuttle, hatch, or other similarly restricted opening.

Front 655

Attic-Type Heating Appliance

Back 655

A heating appliance designed specifically for installation in an attic or in a space with low headroom that normally is unoccupied.

Front 656

Audible Notification
Appliance

Back 656

A notification appliance that alerts by the sense of hearing. (SIG-NAS)

Front 657

Audience

Back 657

Spectators whose primary purpose is to view a performance.

Front 658

Audio Amplifier or
Pre-Amplifier

Back 658

Electronic equipment that increases the current or voltage, or both, potential of an audio signal intended for use by another piece of audio equipment. Amplifier is the term used to denote an audio amplifier within this article.

Front 659

Audio Autotransformer

Back 659

A transformer with a single winding and multiple taps intended for use with an amplifier loudspeaker signal output.

Front 660

Audio Signal Processing
Equipment

Back 660

Electrically operated equipment that produces, processes, or both, electronic signals that, when appropriately amplified and reproduced by a loudspeaker, produce an acoustic signal within the range of normal human hearing (typically 20-20 kHz). Within this article, the terms equipment and audio equipment are assumed to be equivalent to audio signal processing equipment.

Front 661

Audio System

Back 661

Within this article, the totality of all equipment and interconnecting wiring used to fabricate a fully functional audio signal processing, amplification, and reproduction system.

Front 662

Audio Transformer

Back 662

A transformer with two or more electrically isolated windings and multiple taps intended for use with an amplifier loudspeaker signal output.

Front 663

Augmented Air Firing

Back 663

Supplementary firing with the addition of air at the duct burners to support and stabilize combustion or to reduce emissions.

Front 664

Authority

Back 664

The agency legally established and authorized to operate a fixed guideway transit and/or passenger rail system.

Front 665

Authority Having Jurisdiction

Back 665

An organization, office, or individual responsible for enforcing the requirements of a code or standard, or for approving equipment, materials, an installation, or a procedure.

Front 666

Authority Having Jurisdiction
(AHJ).

Back 666

An organization, office, or individual responsible for enforcing the requirements of a code or standard, or approving equipment, materials, an installation, or a procedure.

Front 667

Authority Having Jurisdiction
(AHJ)

Back 667

An organization, office, or individual responsible for enforcing the requirements of a code or standard, or for approving equipment, materials, an installation, or a procedure.

Front 668

Authority Having Jurisdiction
(AHJ)

Back 668

The organization, office, or individual responsible for approving equipment, materials, an installation, or a procedure.

Front 669

Authorized Entrant

Back 669

A term used to describe a U.S. federally regulated industrial worker designated to enter confined spaces who meets specified training requirements for each specific space he or she enters.

Front 670

Authorized Person

Back 670

A person approved or assigned to perform specific types of duties or to be at a specific location at the job site.

Front 671

Authorized Person

Back 671

The person in charge of the premises, or other person appointed or selected by the person in charge of the premises, to perform certain duties associated with the battery installation on the premises.

Front 672

Autoignition

Back 672

Initiation of combustion by heat but without a spark or flame.

Front 673

Autoignition Temperature

Back 673

The lowest temperature at which a combustible material ignites in air without a spark or flame.

Front 674

Autoignition Temperature
(AIT)

Back 674

The minimum temperature required to initiate or cause self-sustained combustion of a solid, liquid, or gas independently of the heating or heated element.

Front 675

Automated External
Defibrillator (AED)

Back 675

A device that administers an electric shock through the chest wall to the heart using built-in computers to assess the patient’s heart rhythm and defibrillate as needed.

Front 676

Automated Fixed Guideway
Transit System

Back 676

A fixed guideway transit system that operates fully automated, driverless vehicles along an exclusive right-of-way.

Front 677

Automated Information
Storage System (AISS)

Back 677

An enclosed storage and retrieval system that moves recorded media between storage and information technology equipment systems.

Front 678

Automated Vehicle Locator
(AVL)

Back 678

A computerized mapping system used to track the location of vehicles.

Front 679

Automatic

Back 679

Providing a function without the necessity of human intervention. (ELS)

Front 680

Automatic

Back 680

Self-acting, operating by its own mechanism when actuated by some impersonal influence, as, for example, a change in current, pressure, temperature, or mechanical configuration.

Front 681

Automatic

Back 681

Self-acting, operating by its own mechanism when actuated by some impersonal influence, as, for example, a change in current, pressure, temperature, or mechanical configuration. [70, 2008]

Front 682

Automatic

Back 682

That which provides a function without the necessity of human intervention.

Front 683

Automatic

Back 683

That which provides a function without the necessity of human intervention. [101, 2006]

Front 684

Automatic Aid

Back 684

A plan developed between two or more fire departments for immediate joint response on first alarms. [1142:3.3]

Front 685

Automatic Aid

Back 685

A plan developed between two or more fire departments for immediate joint response on first alarms.

Front 686

Automatic Aid

Back 686

A plan developed between two or more fire departments for immediate joint response on first alarms. [1142:3.3]

Front 687

Automatically Controlled
Appliance

Back 687

Appliance equipped with an automatic burner ignition and safety shutoff device and other automatic devices.

Front 688

Automatically Ignited Burner

Back 688

A burner equipped so that the main burner fuel can be turned on and ignited automatically.

Front 689

Automatically Lighted
Fuel-Burning Appliance

Back 689

A fuel-burning appliance in which fuel to the main burner is normally turned on and ignited automatically.

Front 690

Automatically Operated
Damper

Back 690

A damper operated by an automatic control.

Front 691

Automatically Suppress Fire

Back 691

Automatically perform actions on a fire process in order to limit the growth of or extinguish the fire.

Front 692

Automatic (Automatically)

Back 692

Occurring without need of human action.

Front 693

Automatic Burner Management System — Nonrecycling

Back 693

A burner management system by which a furnace is purged and a burner is started, ignited, and stopped automatically but does not recycle automatically.

Front 694

Automatic Burner Management System — Recycling

Back 694

A burner management system by which a furnace is purged and a burner is started, ignited, and stopped automatically and recycles on a preset pressure range.

Front 695

Automatic Changeover
Regulator

Back 695

An integral two-stage regulator that combines two high-pressure regulators and a second-stage regulator into a single unit designed for use with multiple cylinder installations.

Front 696

Automatic-Closing Device

Back 696

A device that causes the door or window to close when activated by a fusible link or detector.

Front 697

Automatic-Closing Door

Back 697

A door that normally is open but that closes when the automatic-closing device is activated.

Front 698

Automatic-Closing Door

Back 698

A door that normally is open but that closes when the automatic-closing device is activated. [80, 2007]

Front 699

Automatic Detection
Equipment

Back 699

Equipment that automatically detects heat, flame, products of combustion, flammable gases, or other conditions likely to produce fire or explosion and cause other automatic actuation of alarm and protection equipment.

Front 700

Automatic Detection
Equipment

Back 700

Equipment that automatically detects heat, flame, products of combustion, flammable gases, or other conditions likely to produce fire or explosion and cause other automatic actuation of alarm and protection equipment. [25, 2002]

Front 701

Automatic Dry Standpipe
System

Back 701

A standpipe system with a permanently attached water supply that is designed to have piping contain water only when the system is being utilized.

Front 702

Automatic Electrical Firing
Unit

Back 702

A panel or box that operates automatically to provide the source of electric current used to ignite electric matches.

Front 703

Automatic Electrical Load
Management System

Back 703

A device that continuously monitors the electrical system voltage and automatically sheds predetermined loads in a selected order to prevent overdischarging of the apparatus’ batteries.

Front 704

Automatic Electrical Load
Management System

Back 704

A device that continuously monitors the electrical system voltage and automatically sheds predetermined loads in a selected order to prevent overdischarging of the apparatus’ batteries. [1901, 2003]

Front 705

Automatic Electric Igniter

Back 705

A device for fuel burners designed to utilize electric energy for ignition of a fuel-air mixture at the burner.

Front 706

Automatic Emergency Shutoff
Valve

Back 706

A designated fail-safe automatic closing valve designed to shut off the flow of gases or liquids that is initiated by a control system where the control system is activated by either manual or automatic means.

Front 707

Automatic Extinguishing
System Supervisory Device

Back 707

A device that responds to abnormal conditions that could affect the proper operation of an automatic sprinkler system or other fire extinguishing system(s) or suppression system(s), including, but not limited to, control valves, pressure levels, liquid agent levels and temperatures, pump power and running, engine temperature and overspeed, and room temperature. (SIG-IDS)

Front 708

Automatic Firecheck

Back 708

A device for stopping the progress of a flame front in burner mixture lines (flashback) and for automatically shutting off the fuel-air mixture.

Front 709

Automatic Fire Check

Back 709

A flame arrester equipped with a check valve to shut off the fuel gas supply automatically if a backfire occurs.

Front 710

Automatic Fire Detection
System

Back 710

A fire detection system that senses the presence of fire, smoke, or heat and activates a sprinkler system or an automatic alarm system.

Front 711

Automatic Fire Detector

Back 711

A device designed to detect the presence of a fire signature and to initiate action. For the purpose of this Code, automatic fire detectors are classified as follows: Automatic Fire Extinguishing or Suppression System Operation Detector, Fire-Gas Detector, Heat Detector, Other Fire Detectors, Radiant Energy-Sensing Fire Detector, Smoke Detector. [72, 2007]

Front 712

Automatic Fire Detector

Back 712

A device designed to detect the presence of a fire signature and to initiate action. For the purpose of this Code, automatic fire detectors are classified as follows: Automatic Fire Extinguishing or Suppression System Operation Detector, Fire-Gas Detector, Heat Detector, Other Fire Detectors, Radiant Energy-Sensing Fire Detector, Smoke Detector. (SIG-IDS)

Front 713

Automatic Fire Detector

Back 713

A device designed to detect the presence of a fire signature and to initiate action. For the purpose of this standard, automatic fire detectors are classified as follows: Automatic Fire Extinguishing or Suppression System Operation Detector, Fire-Gas Detector, Heat Detector, Other Fire Detectors, Radiant Energy-Sensing Fire Detector, Smoke Detector. [72, 2007]

Front 714

Automatic Fire Extinguishing or Suppression System Operation Detector

Back 714

A device that automatically detects the operation of a fire extinguishing or suppression system by means appropriate to the system employed. [72, 2007]

Front 715

Automatic Fire Extinguishing or Suppression System Operation Detector

Back 715

A device that automatically detects the operation of a fire extinguishing or suppression system by means appropriate to the system employed. (SIG-IDS)

Front 716

Automatic Flame Effect

Back 716

A flame effect that is supervised and fired by an automatic control system.

Front 717

Automatic Flush Bolts

Back 717

A mortised bolt installed near the top or bottom of the inactive leaf of a pair of doors that holds the inactive leaf in a closed position until
the active leaf is opened.

Front 718

Automatic Gas Shutoff Device

Back 718

A device constructed so that the attainment of a water temperature in a hot water supply system in excess of some predetermined limit acts in such a way as to cause the gas to the system to be shut off.

Front 719

Automatic Generator Starting
System (AGS)

Back 719

A control system that automatically starts and stops engine generators when pre-set RV conditions occur, such as beginning and end of quiet time, low and high battery charge, availability or loss of shore power connection, or appliance demand changes such as cycling of temperature-controlled air conditioning.

Front 720

Automatic Ignition

Back 720

Ignition of gas at the burner(s) when the gas controlling device is turned on, including re-ignition if the flames on the burner(s) have been extinguished by means other than by the closing of the gas controlling device.

Front 721

Automatic Locking
Differential

Back 721

A type of nonslip differential that operates automatically.

Front 722

Automatic Louver

Back 722

An opening in a door with a series of slats or blades to allow passage of air and designed to close automatically in the event of fire.

Front 723

Automatic/Manual Switch

Back 723

Means of converting the system from automatic to manual actuation.

Front 724

Automatic Operation

Back 724

Operation without human intervention. This operation includes, but is not limited to, heat, rate of heat rise, smoke, or pressure change.

Front 725

Automatic Operation

Back 725

Operation without human intervention. This operation includes, but is not limited to, heat, rate of heat rise, smoke, or pressure change. [25,
2008]

Front 726

Automatic Regulating Foam
Proportioning System

Back 726

A foam proportioning system that automatically adjusts the flow of foam concentrate into the water stream to maintain the desired proportioning ratio.

Front 727

Automatic Safety Shutoff Valve

Back 727

A valve that, upon shutdown conditions, will close automatically within
1 second to completely stop the flow of gas to the engine.

Front 728

Automatic Sprinkler

Back 728

A fire suppression or control device that operates automatically when its heat-activated element is heated to its thermal rating or above, allowing water to discharge over a specified area.

Front 729

Automatic Sprinkler

Back 729

A fire suppression or control device that operates automatically when its heat-actuated element is heated to its thermal rating or above, allowing water to discharge over a specific area.

Front 730

Automatic Sprinkler System

Back 730

A sprinkler system of pipes with water under pressure that allows water to be discharged immediately when a sprinkler head operates.

Front 731

Automatic Standpipe System

Back 731

A standpipe system that is attached to a water supply capable of supplying the system demand at all times and that requires no action other than opening a hose valve to provide water at hose connections.

Front 732

Automatic Transfer Switch

Back 732

Self-acting equipment for transferring one or more load conductor connections from one power source to another.

Front 733

Automatic Transfer Switch

Back 733

Self-acting equipment for transferring one or more load conductor connections from one power source to another. [110, 2005]

Front 734

Automatic Valve

Back 734

An automatic or semiautomatic device consisting essentially of a valve and operator that control the gas supply to the burner(s) during operation of an appliance.

Front 735

Automatic Vent Damper Device

Back 735

A device that is intended for installation in the venting system, in the outlet of or downstream of the appliance draft hood, of an individual automatically operated appliance and that is designed to automatically open the venting system when the appliance is in operation and to automatically close off the venting system when the appliance is in a standby or shutdown condition.

Front 736

Automatic Water Mist Nozzles

Back 736

Nozzles that operate independently of other nozzles by means of a detection/activation device built into the nozzle.

Front 737

Automatic Water Spray Nozzle

Back 737

A nozzle intended to open automatically by operation of a heat responsive element that maintains the discharge orifice closed by means such as the exertion of force on a cap (button or disc), that when discharging water under pressure, will distribute the water in a specific, directional pattern.

Front 738

Automotive Components on
Portable Racks

Back 738

Automotive components on portable racks are defined as the following: instrument panels, windshields, metal and plastic gasoline tanks, heater housings, door panels, interior trim, bumper facia, wiring harnesses, sheet metal, body components, engines, driveline components, steering mechanisms, auxiliary motors, and lighting — all with or without expanded plastic donnage. This definition does not include the storage of air bags, tires, and seats on portable racks.

Front 739

Auxiliary Air

Back 739

Air that is supplied from an auxiliary source to maintain a minimum fuel mixture velocity in burner piping.

Front 740

Auxiliary Air

Back 740

Supply or supplemental air delivered near the outside face of a chemical fume hood to reduce room air consumption.

Front 741

Auxiliary Box

Back 741

A fire alarm box that can only be operated from one or more remote initiating devices or an auxiliary fire alarm system used to send an alarm to the public fire service communications center. (SIG-PRS)

Front 742

Auxiliary Braking System

Back 742

A braking system in addition to the service brakes, such as an engine retarder, transmission retarder, driveline retarder, or exhaust retarder.

Front 743

Auxiliary Braking System

Back 743

A braking system in addition to the service brakes, such as an engine retarder, transmission retarder, driveline retarder, or exhaust retarders. [1901, 2003]

Front 744

Auxiliary Engine-Driven
Pumps

Back 744

Pumps whose power is provided by engines that are independent of the vehicle engine.

Front 745

Auxiliary Equipment

Back 745

Equipment items that are load-bearing and designed to be utilized with life safety rope and harness, such as ascending devices, carabiners, descent control devices, rope grab devices, and snap-links.

Front 746

Auxiliary Equipment

Back 746

Listed equipment used in conjunction with the dry chemical systems, for example, to shut down power, fuel, or ventilation to the hazard being protected or to initiate signaling devices.

Front 747

Auxiliary Equipment

Back 747

Listed equipment used in conjunction with the wet chemical systems, for example, to shut down power, fuel, or ventilation to the hazard being protected or to initiate signaling devices.

Front 748

Auxiliary Equipment

Back 748

System components that are load-bearing accessories designed to be utilized with life safety rope and harness including, but not limited to, ascending devices, carabiners, descent control devices, rope grab devices, and snap-links. [1983:1.3]

Front 749

Auxiliary Fire Alarm System

Back 749

A system used to connect a protected premises fire alarm system to a public fire alarm reporting system for transmitting an alarm to the public fire service communications center. (SIG-PRS)

Front 750

Auxiliary Fuel

Back 750

In a fluidized bed boiler, generally a gaseous or liquid fuel used to warm the bed material sufficiently to allow ignition of the main fuel upon injection into the heated bed material.

Front 751

Auxiliary Hydraulic Power

Back 751

A small gasoline engine, diesel engine, or electric motor-driven hydraulic pump used to operate an aerial device in an emergency or in lieu of the main hydraulic system.

Front 752

Auxiliary Hydraulic Power

Back 752

A small gasoline engine, diesel engine, or electric motor-driven hydraulic pump used to operate an aerial device in an emergency or in lieu of the main hydraulic system. [1901, 2003]

Front 753

Auxiliary Load-Carrying
Burner

Back 753

In a fluidized bed boiler, a burner whose primary purpose is load carrying, located over the bed and having its own air supply.

Front 754

Auxiliary Power Unit (APU)

Back 754

A self-contained power source, provided as a component of an
aircraft, that is used to energize aircraft systems when power plants are
not operating or when external power is not available.

Front 755

Auxiliary Pump

Back 755

A water pump mounted on the fire apparatus in addition to a fire pump and used for fire fighting either in conjunction with or independent of the fire pump.

Front 756

Auxiliary Pump

Back 756

A water pump mounted on the fire apparatus in addition to a fire pump and used for fire fighting either in conjunction with or independent of the fire pump. [1901, 2003]

Front 757

Auxiliary Pump

Back 757

A water pump mounted on the fire apparatus that is used for
fire-fighting operations that is neither a fire pump, an industrial
supply pump, nor a transfer pump.

Front 758

Auxiliary Valve

Back 758

A control valve that meets the functional requirements of an automatic safety shutoff valve by being capable of automatically closing within 1 second to stop the flow of gas to the engine.

Front 759

Availability

Back 759

The probability that the system, structure, or component of interest is functional at a given point in time.

Front 760

Available for Service

Back 760

The time the unit was available for response.

Front 761

Available Height for Storage

Back 761

The maximum height at which commodities can be stored above the floor and still maintain necessary clearance from structural members and the required clearance below sprinklers. [13, 2007]

Front 762

Available Height for Storage

Back 762

The maximum height at which commodities can be stored above the floor and still maintain necessary clearance from structural members and the required clearance below sprinklers.

Front 763

Available Resources

Back 763

Resources assigned to an incident or planned event, checked in, and available for a mission assignment, normally located in a staging area.

Front 764

Avalanche

Back 764

A mass of snow — sometimes containing ice, water, and debris — that slides down a mountainside.

Front 765

Average Ambient Sound Level

Back 765

The root mean square, A-weighted, sound pressure level measured over the period of time that any person is present, or a 24-hour period, whichever time period is the lesser. (SIG-NAS)

Front 766

Average Heat Release Rate
(HRR180)

Back 766

The average heat release rate per unit area, over the time period starting at time to ignition and ending 180 seconds later, as measured in NFPA 271 or ASTM E 1354 (units: kW/m2).

Front 767

Average Upper Gas Layer
Temperature

Back 767

Temperature based on the average of the four ceiling quadrant thermocouples and the center of the room ceiling thermocouple.

Front 768

Average Upper Gas Layer
Temperature

Back 768

Temperature based on the average of the four ceiling quadrant thermocouples and the center of the room ceiling thermocouple. [265, 2002]

Front 769

Aviation Fuel

Back 769

Any petroleum fuel for use in aircraft engines.

Front 770

Awareness Level Personnel

Back 770

(29 CFR 1910.12: First Responder at the Awareness Level) Personnel who, in the course of their normal duties, could encounter an emergency involving hazardous materials/weapons of mass destruction (WMD) and who are expected to recognize the presence of the hazardous materials/weapons of mass destruction (WMD), protect themselves, call for trained personnel, and secure the scene. (See Annex H ).

Front 771

Awning

Back 771

A shade structure, supported by posts or columns, or partially supported by a manufactured home, that is installed, erected, or used on a manufactured home site.

Front 772

Axisymmetric Plume

Back 772

A plume that rises above a fire, does not come into contact with wall or other obstacles, and is not disrupted or deflected by airflow.

Front 773

Axle Height

Back 773

The distance to the lower connection of the axle spindle assembly and the outboard end of the lower control arm (lever ball joint or kingpin), excluding shock mounting, grease fitting, or similar component.

Front 774

Axle Tread

Back 774

The distance between the center of two tires or wheels on one axle.

Front 775

Backdraft

Back 775

A deflagration resulting from the sudden introduction of air into a confined space containing oxygen-deficient products of incomplete combustion.

Front 776

Backdraft

Back 776

A phenomenon that occurs when a fire takes place in a confined area such as a sealed aircraft fuselage and burns undetected until most of the oxygen within is consumed. The heat continues to produce flammable gases, mostly in the form of carbon monoxide. These gases are heated above their ignition temperature and when a supply of oxygen is introduced, as when normal entry points are opened, the gases could ignite with explosive force.

Front 777

Backfire

Back 777

A fire set along the inner edge of a fire control line to consume the fuel in the path of a wildland fire or change the direction of force of the fire’s convection column.

Front 778

Backfire Arrester

Back 778

A flame arrester installed in fully premixed air-fuel gas distribution piping to terminate flame propagation therein, shut off fuel supply, and relieve pressure resulting from a backfire.

Front 779

Backflow

Back 779

The flow of water or other liquids, mixtures, or substances into the distributing pipes of a potable supply of water from any source or sources other than its intended source.

Front 780

Backflow Check Valve

Back 780

A device designed to allow flow in only one direction.

Front 781

Backflow Check Valve

Back 781

A device designed to allow flow in only one direction. [51, 2007]

Front 782

Backflow Preventer

Back 782

A device or means to prevent backflow.

Front 783

Backlayering

Back 783

The reversal of movement of smoke and hot gases counter to the direction of the ventilation airflow.

Front 784

Back Length

Back 784

Upper torso garment measurement at center back from bottom of collar to bottom edge of garment.

Front 785

Back Pressure

Back 785

Pressure against which a fluid is flowing, resulting from friction in lines, restrictions in pipes or valves, pressure in vessel to which fluid is flowing, hydrostatic head, or other impediment that causes resistance to fluid flow.

Front 786

Back Rise

Back 786

Lower torso garment measurement from crotch seam to top of waistband at back center.

Front 787

Back Stock Area

Back 787

The area of a mercantile occupancy that is physically separated from the sales area and not intended to be accessible to the public.

Front 788

Back Stock Area

Back 788

The area of a mercantile occupancy that is physically separated from the sales area and not intended to be accessible to the public. [30B,
2007]

Front 789

Back-Up Alarm

Back 789

An audible device designed to warn that the fire apparatus is in reverse gear.

Front 790

Back-Up Alarm

Back 790

An audible device designed to warn that the fire apparatus is in reverse gear. [1901, 2003]

Front 791

Backup Line

Back 791

An additional hose line used to reinforce and protect personnel in the event the initial attack proves inadequate.

Front 792

Baffle

Back 792

An object placed in an appliance to change the direction of or retard the flow of air, air-gas mixtures, or flue gases.

Front 793

Baffle

Back 793

An object placed in an appliance to change the direction of, or to retard, the flow of air, air-fuel mixtures, or flue gases.

Front 794

Baffle

Back 794

An object placed in an appliance to change the direction of or to retard the flow of air, air-gas mixtures, or flue gases. [54:3.3]

Front 795

Baffle

Back 795

A nonliquidtight transverse partition in a cargo tank.

Front 796

Baffle Plate

Back 796

An object placed in or near an appliance to change the direction, or to retard the flow, of air, air-fuel mixtures, or flue gases.

Front 797

Baking and Roasting Gas Oven

Back 797

An oven primarily intended for volume food preparation that may be composed of one or more sections or units of the following types: (1) cabinet oven, an oven having one or more cavities heated by a single burner or group of burners; (2) reel-type oven, an oven employing trays that are moved by mechanical means; or (3) sectional oven, an oven composed of one or more independently heated cavities.

Front 798

Balaclava (Sock Hood)

Back 798

An arc-rated FR hood that protects the neck and head except for facial area of the eyes and nose.

Front 799

Balanced Pressure Bladder
Tank

Back 799

A foam concentrate tank fitted with an internal bladder which uses water flow through a modified venturi type proportioner to control the foam concentrate injection rate by displacing the foam concentrate within the bladder with water outside the bladder.

Front 800

Balanced Pressure Pump-Type
Proportioning

Back 800

A foam proportioning system that utilizes a foam pump and valve(s) to balance foam and water pressures at a modified venturi-type proportioner located in the foam solution delivery piping; a foam concentrate metering orifice is fitted in the foam inlet section of the proportioner.

Front 801

Balcony

Back 801

Deck area that projects from a bulkhead.

Front 802

Balcony (Exterior)

Back 802

An exterior floor projecting from, and supported by, a structure without additional independent supports.

Front 803

Balcony Spill Plume

Back 803

A smoke plume that originates from a compartment fire, flows out the doorway, flows under a balcony, and flows upward after passing the balcony edge.

Front 804

Baled Cotton

Back 804

A natural seed fiber wrapped and secured in industry-accepted materials, usually consisting of burlap, woven polypropylene, or sheet polyethylene, and secured with steel, synthetic, or wire bands, or wire; also includes linters (lint removed from the cottonseed) and motes (residual materials from the ginning process).

Front 805

Baled Cotton

Back 805

A natural seed fiber wrapped and secured in industry-accepted materials, usually consisting of burlap, woven polypropylene, or sheet polyethylene, and secured with steel, synthetic or wire bands, or wire; also includes linters (lint removed from the cottonseed) and motes (residual materials from the ginning process). (See Table A.3.9.6.1.)

Front 806

Ballast

Back 806

Weight, liquid or solid, added to a ship to ensure stability.

Front 807

Ballast Gas

Back 807

Atmospheric air or a dry gas that is admitted into the compression chamber of rotary mechanical pumps to prevent condensation of vapors in the pump oil by maintaining the partial pressure of the condensable vapors below the saturation value.

Front 808

Ballast Tank

Back 808

A watertight compartment to hold liquid ballast.

Front 809

Ball Trap

Back 809

A device consisting of two spring-tensioned balls that form a connector into which a flat metal clip that is attached to a conductor can be inserted to complete a circuit.

Front 810

Band

Back 810

A range of frequencies between two definite limits.

Front 811

Banded Roll Paper Storage

Back 811

Rolls provided with a circumferential steel strap [3⁄8 in. (9.5 mm) or wider] at each end of the roll.

Front 812

Banded Tires

Back 812

A storage method in which a number of tires are strapped together.

Front 813

Banded Tire Storage

Back 813

Storage in which a number of tires are strapped together.

Front 814

Bare-Hand Work

Back 814

A technique of performing work on energized electrical conductors or circuit parts, after the employee has been raised to the potential of the conductor or circuit part.

Front 815

Barge

Back 815

A long, large vessel, usually flat-bottomed, self-propelled, towed, or pushed by another vessel, used for transporting materials.

Front 816

Barge

Back 816

Any vessel not equipped with a means of self-propulsion.

Front 817

Bark Pocket Wood Irregularity

Back 817

An opening between annual growth rings that contains bark.

Front 818

Bar Lock

Back 818

(1) A type of rim lock in which metal bars slide out from a central point on the door and into receivers on both sides of the door frame. (2) A metal rod or tube that slides through fittings affixed to the front of a file cabinet, bent at the top and secured with a combination lock, which holds the drawers closed.

Front 819

Barometric Draft Regulator

Back 819

A balanced damper device attached to a chimney, vent connector, breeching, or flue gas manifold to control chimney draft.

Front 820

Barometric Draft Regulator

Back 820

A device built into a fuel-burning appliance, or made a part of a chimney connector or vent connector, that functions to reduce excessive draft through an appliance to a desired value by admitting ambient air into the appliance chimney, chimney connector, vent, or vent connector.

Front 821

Barrage

Back 821

A rapidly fired sequence of aerial fireworks.

Front 822

Barrel

Back 822

A cylindrical horizontal member at the head of the opening that supports the door curtain of a rolling steel door and contains the counterbalance springs.

Front 823

Barrel

Back 823

A unit of volume. One barrel equals 42 U.S. gal, or 5.615 ft3
(0.159 m3).

Front 824

Barrel

Back 824

A unit of volume used in the petroleum industry that is equal to
42 gal (159 L).

Front 825

Barrel

Back 825

A unit of volume used in the petroleum industry that is equal to
42 gal (159 L). [30, 2008]

Front 826

Barricade

Back 826

A natural or artificial barrier that effectively screens a magazine, building, railway, or highway from the effects of an explosion in a magazine or building containing explosives.

Front 827

Barricade

Back 827

A physical obstruction such as tapes, cones, or A-frame-type wood or metal structures intended to provide a warning about and to limit access to a hazardous area.

Front 828

Barricade

Back 828

The effective screening of a building containing explosive materials from the magazine or another building, a railway, or a highway by a natural or an artificial barrier. A straight line from the top of any sidewall of the building containing explosive materials to the eaveline of any magazine or other building or to a point 12 ft (3660 mm) above the center of a railway or highway shall pass through such barrier.

Front 829

Barricade (Explosives or
Fireworks)

Back 829

A natural or artificial barrier that effectively screens a magazine, building, railway, or highway from the effects of an explosion in a magazine or building containing explosives. [1124, 2006]

Front 830

Barrier

Back 830

A material obstacle (as opposed to separation).

Front 831

Barrier

Back 831

A physical obstruction that is intended to prevent contact with equipment or energized electrical conductors and circuit parts or to prevent unauthorized access to a work area.

Front 832

Barrier

Back 832

A physical obstruction that is intended to prevent contact with equipment or live parts or to prevent unauthorized access to a work area. [70E:100]

Front 833

Barrier/Barrier Fabric

Back 833

The fabric or other material placed directly under the cover fabric when Class II cover fabric is used.

Front 834

Barrier Bar Trap

Back 834

A device consisting of a pressure-sensitive switch that is mounted onto one end of an adjustable bar that is installed across an opening.

Front 835

Barrier Layer

Back 835

The component of the ensemble that is intended to provide protection from hazardous liquids.

Front 836

Barrier Layer

Back 836

The layer of garment material, glove material, footwear material, or face protection device material designated as providing body fluid-borne pathogen resistance.

Front 837

Barrier Material

Back 837

The part of the composite that limits transfer from the face of the layer to the other side.

Front 838

Barrier Valve

Back 838

A valve, not necessarily dusttight, used to inhibit hot gases from traveling back into any system component open for inspection or maintenance.

Front 839

Bars or Keys Grate

Back 839

Those parts of the fuel-supporting surface arranged to admit air for combustion.

Front 840

Base

Back 840

That location at which the primary logistics functions are coordinated and administered.

Front 841

Base (Bed) Section

Back 841

The lowest or widest section of an extension ladder.

Front 842

Base (Bed) Section

Back 842

The lowest or widest section of an extension ladder. [1931:3.3]

Front 843

Base Flood

Back 843

The flood having a 1 percent chance of being equaled or exceeded in any given year.

Front 844

Base Flood

Back 844

The flood having a 1 percent chance of being equaled or exceeded in any given year. [5000, 2003]

Front 845

Base Flood Elevation (BFE)

Back 845

The elevation of the base flood, including wave height, relative to the datum specified on a jurisdiction’s flood hazard map.

Front 846

Base Flood Elevation (BFE)

Back 846

The elevation of the base flood, including wave height, relative to the datum specified on a jurisdiction’s flood hazard map.
[5000, 2003]

Front 847

Base Flood Evaluation

Back 847

A reference point based on the depth or peak elevation of flooding, including wave height, which has a 1 percent (100 year) or greater chance of occurring in any given year.

Front 848

Basement

Back 848

Any story of a building wholly or partly below grade plane that is not considered the first story above grade plane. (Also see 3.3.278.1, First Story Above Grade Plane.)

Front 849

Basement

Back 849

Any story of a building wholly or partly below grade plane that is not considered the first story above grade plane. (See also 3.3.115.1, First Story Above Grade Plane.)

Front 850

Basement

Back 850

A story of a building or a structure having one-half or more of its height below ground level on any side and to which access for emergency incident mitigation purposes is unduly restricted.
[30, 2003]

Front 851

Basement

Back 851

A story of a building or structure having one-half or more of its height below ground level and to which access for fire-fighting purposes is unduly restricted.

Front 852

Basement

Back 852

For the purpose of this standard, a story of a building or structure having one-half or more of its height below ground level and to which access for fire-fighting purposes is unduly restricted.
[30, 2003]

Front 853

Basement

Back 853

For the purposes of this code, a story of a building or structure having one-half or more of its height below ground level and to which access for fire-fighting purposes is restricted.

Front 854

Basement

Back 854

For the purposes of this code, a story of a building or structure having one-half or more of its height below ground level and to which access for fire-fighting purposes is restricted. [30, 2008]

Front 855

Basement

Back 855

Story of a building wholly below grade or partly below and partly above grade, located so that the vertical distance from grade to the floor below is greater than the vertical distance from grade to the floor above. [5000, 2006]

Front 856

Basement and Underground
Parking Structures

Back 856

Parking structures that are located below grade. A basement parking structure has other occupancies above it and an underground parking structure has no occupancy other than parking above it. Basement
and underground parking structures are considered as specific cases of enclosed parking structures.

Front 857

Basement (Flood Resistance)

Back 857

For all matters related to flood-resistant design and construction, the portion of a building having its floor below the finished ground level on all sides.

Front 858

Basement or Underground
Parking Structure

Back 858

A parking structure or portion thereof located below finished ground level.

Front 859

Base Product (Concentrate)

Back 859

The contents of an aerosol container, excluding the propellant.

Front 860

Base Product Filler
(Concentrate Filler)

Back 860

A machine used to fill the aerosol container with the base product prior to addition of the propellant.

Front 861

Base Rail

Back 861

The lower chord (rail) of an aerial ladder to which rungs and reinforcements are attached.

Front 862

Base Rail

Back 862

The lower chord (rail) of an aerial ladder to which rungs and reinforcements are attached. [1901, 2003]

Front 863

Base Section

Back 863

The first or bottom section of an aerial device.

Front 864

Base Section

Back 864

The first or bottom section of an aerial device. [1901, 2003]

Front 865

Base Station

Back 865

A stationary radio transceiver with an integral AC power supply.

Front 866

Basic First Aid Kit

Back 866

Equipment or devices for managing infection exposure, airways, spinal immobilization, fracture immobilization, shock, and bleeding control.

Front 867

Basic Life Support (BLS)

Back 867

A specific level of prehospital medical care provided by trained responders, focused on rapidly evaluating a patient’s condition; maintaining a patient’s airway, breathing, and circulation; controlling external bleeding; preventing shock; and preventing further injury or disability by immobilizing potential spinal or other bone fractures.

Front 868

Basic Life Support (BLS)

Back 868

Emergency medical treatment at a level as defined by the medical authority having jurisdiction.

Front 869

Basic Life Support (BLS)

Back 869

Emergency medical treatment at a level as defined by the medical authority having jurisdiction. [1500, 2007]

Front 870

Basic Life Support (BLS)

Back 870

Emergency medical treatment at a level as defined by the medical authority having jurisdiction. [1500:3.3]

Front 871

Basic Life Support (BLS)

Back 871

Emergency medical treatment at a level as defined by the medical authority having jurisdiction in conjunction with American Heart Association guidelines.

Front 872

Basic Plane

Back 872

The anatomical plane that includes the superior rim of the external auditory meatus, the upper edge of the external openings of the ear, and the inferior margin of the orbit, which is the lowest point of the floor of the eye socket.

Front 873

Basic Spray Nozzle

Back 873

An adjustable-pattern spray nozzle in which the rated discharge is delivered at a designated nozzle pressure and nozzle setting.

Front 874

Basic Wind Speed (V)

Back 874

Three-second gust speed at 33 ft (10 m) above the ground in Exposure C (see ASCE/SEI 7, Section 6.5.6.3) as determined in accordance with ASCE/SEI 7, Section 6.5.4. [ASCE/SEI 7:6.2]

Front 875

Batch Furnace

Back 875

A furnace into which the work charge is introduced all at once.

Front 876

Batch Mix

Back 876

The manual addition of foam concentrate to a water storage container or tank to make foam solution.

Front 877

Bathroom

Back 877

An area including a basin with one or more of the following: a toilet, a tub, or a shower.

Front 878

Bathroom

Back 878

Within a dwelling unit, any room or compartment containing a lavatory dedicated to personal hygiene, or a water closet, or bathing capability such as a shower or tub, or any combination of facilities thereof.

Front 879

Batten

Back 879

A horizontal pipe, tube, or other structural shape in a pocket of or attached to a fire safety curtain.

Front 880

Battery

Back 880

A collection of fireworks devices, such as a group of mortars (finale battery) or a bundle of roman candles (candle battery), fused together in such a manner that they are fired within a short period of time.

Front 881

Battery

Back 881

An electrochemical system capable of storing under chemical form the electric energy received and which can give it back by reconversion.

Front 882

Battery Certification

Back 882

The certification by a battery manufacturer that a battery is built to industry standards.

Front 883

Battery Circuits

Back 883

In battery circuits, the highest voltage experienced under charging or equalizing conditions.

Front 884

Battery Cold Cranking Rating

Back 884

The discharge load in amperes that a battery at 0°F (-17.8°C) can deliver for 30 seconds while maintaining a voltage of 1.2 volts per cell or higher.

Front 885

Battery Disconnect Switch

Back 885

A switch that disconnects the battery from all of the vehicle’s wiring.

Front 886

Battery Effect

Back 886

A voltage that exists on the cell line after the power supply is disconnected.

Front 887

Battery Enclosure

Back 887

An enclosure containing batteries that is suitable for use in an area other than a battery room or an area restricted to authorized personnel.

Front 888

Battery Reserve Capacity

Back 888

The number of minutes for which a new, fully charged battery at 80°F (26.7°C) can be continuously discharged at 25 amperes while maintaining a voltage of 1.75 volts per cell or higher (10.5 volts for a
12-volt battery or 5.25 volts for a 6-volt battery).

Front 889

Battery Room

Back 889

Room specifically intended for the installation of batteries that have no other protective enclosure.

Front 890

Battery System

Back 890

A system that consists of these interconnected subsystems: (1) stationary storage batteries, (2) battery chargers, and (3) a collection of rectifiers, inverters, converters, and associated electrical equipment as required for a particular application.

Front 891

Bay Window

Back 891

A window assembly whose maximum horizontal projection is no more than 24 in. (610 mm) from the plane of an exterior wall and is elevated above the floor level of the home, or a window supported on a foundation extending beyond the main walls of a building.

Front 892

B-Class Boundary

Back 892

A boundary designed to resist the passage of flame for 1/2 hour when tested in accordance with ASTM E 119, Standard Test Methods for Fire Tests of Building Construction and Materials.

Front 893

B-Class Division

Back 893

A fire barrier system consisting of bulkheads or decks and including all penetrations for piping and cables, doors, windows, and ductwork, providing 30 minutes of fire resistance when tested in accordance with established test methods.

Front 894

Bead

Back 894

A rounded globule of re-solidified metal at the end of the remains of an electrical conductor that was caused by arcing and is characterized by a sharp line of demarcation between the melted and unmelted conductor surfaces.

Front 895

Beam

Back 895

A collection of rays that can be parallel, divergent, or convergent.

Front 896

Beam

Back 896

The breadth (i.e., width) of a ship at its widest point.

Front 897

Beam Construction

Back 897

Ceilings that have solid structural or solid nonstructural members projecting down from the ceiling surface more than 100 mm (4 in.) and spaced more than 0.9 m (3 ft), center to center. (SIG-IDS)

Front 898

Beam Intensity Profile
(Irradiance Distribution)

Back 898

A description of the variations that can be present in the cross-section of a laser beam or in a focused laser spot.

Front 899

Beam (Side Rail)

Back 899

The main structural side of the ground ladder.

Front 900

Beam (Side Rail)

Back 900

The main structural side of the ground ladder. [1931:3.3]

Front 901

Bearing Wall

Back 901

Any wall meeting either of the following classifications: (1) any metal or wood stud wall that supports more than 100 lb/linear ft (1400
N/linear m) of vertical load in addition to its own weight or (2) any concrete or masonry wall that supports more than 200 lb/linear ft (2800 N/linear m) of vertical load in addition to its own weight. [ASCE/SEI 7:11.2]

Front 902

Bearing Wall

Back 902

Any wall meeting either of the following classifications: (1) any metal or wood stud wall that supports more than 100 lb/linear ft (1400
N/linear m) of vertical load in addition to its own weight or (2) any concrete or masonry wall that supports more than 200 lb/linear ft (2900 N/linear m) of vertical load in addition to its own weight. [ASCE/SEI 7:11.2]

Front 903

Bearing Wall System

Back 903

A structural system with bearing walls providing support for all or major portions of the vertical loads. Shear walls or braced frames provide seismic force resistance. [ASCE/SEI 7:11.2]

Front 904

Bed Compartment

Back 904

Segments of a fluidized bed, which might be individually controlled with respect to combustion airflow and fuel feed.

Front 905

Bedded Position

Back 905

The position in which the fly section(s) of an extension ladder is fully retracted with the pawls engaged.

Front 906

Bedded Position

Back 906

The position in which the fly section(s) of an extension ladder is fully retracted with the pawls engaged. [1931:3.3]

Front 907

Bed Drain

Back 907

An opening provided in the enclosure of a fluidized bed for the removal of spent bed material and any tramp material.

Front 908

Bed Material

Back 908

Granular particles that compose a fluidized bed.

Front 909

Bed Temperature

Back 909

The average temperature of a fluidized bed.

Front 910

Belay

Back 910

The method by which a potential fall distance is controlled to minimize damage to equipment and/or injury to a live load.

Front 911

Belay

Back 911

The method by which a potential fall distance is controlled to minimize damage to equipment and/or injury to a live load. [1670, 2004]

Front 912

Belayer

Back 912

The rescuer who operates the belay system.

Front 913

Bell-Bottom Pier Hole

Back 913

A type of shaft or footing excavation, the bottom of which is made larger than the cross section above to form a bell shape.

Front 914

Belt

Back 914

An equipment item configured as a device that fastens around the waist only and designated as a ladder belt or an escape belt.

Front 915

Belt

Back 915

A system component; material configured as a device that fastens around the waist only and designated as a ladder belt, an escape belt, or a ladder/escape belt.

Front 916

Belt Filter

Back 916

A sludge-dewatering or -concentrating device having continuous bands or belts of filtering media that pass around rollers and from which the material caught on the media is usually removed by gravity and pressure.

Front 917

Benching or Benching System

Back 917

A method of protecting employees from cave-ins by excavating the side of an excavation to form one or a series of horizontal levels or steps, usually with vertical or near-vertical surfaces between levels.

Front 918

Benching or Benching System

Back 918

A method of protecting employees from cave-ins by excavating the side of a trench or excavation to form one or a series of horizontal levels or steps, usually with vertical or near-vertical surfaces between levels.

Front 919

Bend

Back 919

A knot that joins two ropes or webbing pieces together.

Front 920

Bends

Back 920

Decompression sickness; caisson worker’s disease. (HYP)

Front 921

Bends

Back 921

Decompression sickness, caisson worker’s disease. (See also 3.3.6, Decompression Sickness.) [99, 2005 (HYP)]

Front 922

Beneficial System

Back 922

Auxiliary-powered equipment in motor vehicles or machines that can enhance or facilitate rescues such as electric, pneumatic, or hydraulic seat positioners, door locks, window operating mechanisms, suspension systems, tilt steering wheels, convertible tops, or other devices or systems to facilitate the movement (extension, retraction, raising, lowering, conveyor control) of equipment or machinery.

Front 923

Bent

Back 923

A main supporting framework consisting of a transverse row of piling with interconnecting pile cap and bracing.

Front 924

Berth

Back 924

(1) The mooring of a boat alongside a bulkhead, pier, or between piles. (2) A sleeping space.

Front 925

Berth

Back 925

The waterside area adjacent to a pier, wharf, or bulkhead where vessels are moored.

Front 926

Berth

Back 926

The water space to be occupied by a boat or other vessel alongside or between bulkheads, piers, piles, fixed and floating docks, or any similar access structure. (See also 3.3.21, Slip.)

Front 927

Berthing Area

Back 927

(1) A bed or bunk space on a ship. (2) A space at a wharf for docking a ship.

Front 928

Beta Particle

Back 928

An elementary particle, emitted from a nucleus during radioactive decay, with a single electrical charge and a mass equal to 1⁄1837 that of a proton.

Front 929

Bight

Back 929

The open loop in a rope or piece of webbing formed when it is doubled back on itself.

Front 930

Bilge

Back 930

The lowest inner part of a ship’s hull.

Front 931

Bilge

Back 931

The lowest inner part of a ship’s hull. [1405, 2006]

Front 932

Bin

Back 932

An enclosure to store pulverized fuel.

Front 933

Binary Explosive

Back 933

A blasting explosive formed by mixing or combining two precursor chemicals, for example ammonium nitrate and nitromethane.

Front 934

Binary System

Back 934

A two-component pyrotechnic system.

Front 935

Binary System

Back 935

A two-component pyrotechnic system. [1126, 2006]

Front 936

Bin Box Storage

Back 936

Storage in five-sided wood, metal, or cardboard boxes with open face on the aisles. Boxes are self-supporting or supported by a structure so designed that little or no horizontal or vertical space exists around boxes.

Front 937

Binders

Back 937

Pieces of hardware used to hold a sliding door to the wall, preventing lateral movement of the door from the wall.

Front 938

Bin System (Storage System)

Back 938

A system in which the fuel is pulverized and stored in bins from which it is withdrawn through feeders, as needed, for burning.

Front 939

Biodegradability

Back 939

A measure of the decomposition of organic matter through the action of microorganisms.

Front 940

Biodegradability

Back 940

A measure of the decomposition of organic matter through the action of microorganisms. [1150, 2004]

Front 941

Biogas Fuel Cell System

Back 941

A fuel cell system comprised of a conventional biogas source, such as a landfill gas site or municipal sewage digester site, a fuel cell specific
gas cleanup unit, and a prepackaged or matched modular fuel cell power system.

Front 942

Biological Agents

Back 942

Biological materials that are capable of causing acute disease or long-term damage to the human body.

Front 943

Biological Agents

Back 943

Biological materials that are capable of causing an acute disease or long-term damage to the human body.

Front 944

Biological Agents

Back 944

Biological materials that are capable of causing an acute disease or long-term damage to the human body. [1991, 2005]

Front 945

Biological Agents

Back 945

Biological materials that are capable of causing an acute disease or long-term damage to the human body. [1999, 2003]

Front 946

Biological Agents

Back 946

Biological materials that are capable of causing disease or long-term damage to the human body.

Front 947

Biological Safety Cabinet

Back 947

A ventilated cabinet for personnel, product and environmental protection having an open front with inward airflow for personnel protection, downward HEPA filtered laminar airflow for product protection, and HEPA filtered exhausted air for environmental protection.

Front 948

Biological Terrorism Agents

Back 948

Liquid or particulate agents that can consist of a biologically derived toxin or pathogen to inflict lethal or incapacitating casualties.

Front 949

Biological Terrorism Agents

Back 949

Liquid or particulate agents that can consist of a biologically derived toxin or pathogen used to inflict lethal or incapacitating casualties, generally on a civilian population as a result of a terrorist attack.

Front 950

Biological Terrorism Agents

Back 950

Liquid or particulate agents that can consist of biologically derived toxin or pathogen to inflict lethal or incapacitating casualties.

Front 951

Biological Terrorism Agents

Back 951

Liquid or particulate agents that can consist of biologically derived toxin or pathogen to inflict lethal or incapacitating casualties.
[1994, 2007]

Front 952

Biological Terrorism Agents

Back 952

Liquid or particulate agents that can consist of biologically derived toxins or pathogens to inflict lethal or incapacitating casualties.

Front 953

Biological Warfare Agent

Back 953

A biological substance intended to kill, seriously injure, or incapacitate humans through physiological effects.

Front 954

Biomass

Back 954

A boiler fuel manufactured by means of a process that includes storing, shredding, classifying, and conveying of forest and agricultural byproducts (e.g., wood chips, rice hulls, sugar cane).

Front 955

Biparting

Back 955

A vertically sliding door in which half of the door moves up and half of the door moves down in order to open, or a horizontal sliding door in which one door moves to the right and one moves to the left in order to open.

Front 956

Bipolar Electrode

Back 956

An electrode consisting of adjacent contacts (e.g., the two legs of a forceps) such that the current passes between the pair of contacts generating the intended effect. (ELE)

Front 957

Bipolar Photovoltaic Array

Back 957

A photovoltaic array that has two outputs, each having opposite polarity to a common reference point or center tap.

Front 958

Birth Center

Back 958

A facility in which low-risk births are expected following normal, uncomplicated pregnancies, and in which professional midwifery care is provided to women during pregnancy, birth, and postpartum.

Front 959

Bitragion Coronal Arc

Back 959

The arc between the right and left tragion as measured over the top of the head in a plane perpendicular to the midsagittal plane.

Front 960

Bitragion Inion Arc

Back 960

The arc between tragion as measured over the inion.

Front 961

Bitt

Back 961

Any of the deck posts, often found in pairs, around which ropes or cables are wound and held fast.

Front 962

Bitter End

Back 962

That end of a rope or cable that is wound around a bitt.

Front 963

Bitts

Back 963

A pair of heavy metal posts fastened on a deck to which mooring lines are secured.

Front 964

Blackbody Temperature

Back 964

The temperature of a perfect radiator having a surface with an emissivity of unity and, therefore, a reflectivity of zero (0).

Front 965

Black Match

Back 965

A fuse made from string that is impregnated with Black Powder.

Front 966

Black Powder

Back 966

A low explosive consisting of an intimate mixture of potassium or sodium nitrate, charcoal, and sulfur.

Front 967

Black Powder

Back 967

A low explosive consisting of an intimate mixture of potassium or sodium nitrate, charcoal, and sulfur. [1126, 2006]

Front 968

Black Start

Back 968

Where the stored energy system has the capability to start the prime mover without using energy from another source.

Front 969

Bladder Fuel Tank

Back 969

A fuel container that is both collapsible and self-sealing.

Front 970

Bladder Tank Proportioner

Back 970

This system is similar to a standard pressure proportioner, except the foam concentrate is contained inside a diaphragm bag that is contained inside a pressure vessel. Operation is the same as a standard pressure proportioner, except that, because of the separation of the foam concentrate and water, this system can be used with all foam concentrates, regardless of specific gravity.

Front 971

Blanketing (or Padding)

Back 971

The technique of maintaining an atmosphere that is either inert or fuel-enriched in the vapor space of a container or vessel.

Front 972

Blast Area

Back 972

The area including the blast site and the immediate adjacent area within the influence of flying rock, missiles, and concussion.

Front 973

Blast Burner

Back 973

A burner delivering a combustible mixture to the combustion zone under a pressure that is normally above 0.3 in. w.c. (75 kPa).

Front 974

Blaster

Back 974

A person qualified to assist in the loading and firing of a blast.

Front 975

Blaster-in-Charge

Back 975

A person qualified to be in charge of and responsible for the loading and firing of a blast.

Front 976

Blasting Agent

Back 976

A material or mixture intended for blasting that meets the requirements of the DOT “Hazardous Materials Regulations,” as set forth in 49 CFR Parts 173.56, 173.57, and 173.58, Explosive 1.5D.

Front 977

Blast Pressure Front

Back 977

The expanding leading edge of an explosion reaction that separates a major difference in pressure between normal ambient pressure ahead of the front and potentially damaging high pressure at and behind the front.

Front 978

Blast Site

Back 978

The area where explosive material is handled during loading of the blasthole, including 15.2 m (50 ft) in all directions from the perimeter formed by loaded holes.

Front 979

Bleachers

Back 979

A grandstand in which the seats are not provided with backrests.

Front 980

Bleachers

Back 980

A grandstand in which the seats are not provided with backrests. [5000, 2006]

Front 981

Bleed Air Duct

Back 981

An intake duct in a manifold duct system, designed to input air to maintain system balance.

Front 982

BLEVE

Back 982

Boiling liquid expanding vapor explosion.

Front 983

Block

Back 983

A basic yard storage unit for baled cotton comprising multiple-row storage with clear spaces on all sides.

Front 984

Block

Back 984

A square or portion of a city, town, or village enclosed by streets and including the alleys so enclosed, but not any street.

Front 985

Block

Back 985

A square or portion of a city, town, or village enclosed by streets, including the alleys so enclosed but not any street.

Front 986

Block Creel Construction

Back 986

Rope constructed without knots or splices in the yarns, ply yarns, strands or braids, or rope.

Front 987

Blocking Diode

Back 987

A diode used to block reverse flow of current into a photovoltaic source circuit.

Front 988

Blood

Back 988

Human blood, human blood components, and products made from human blood.

Front 989

Bloodborne Pathogens

Back 989

Microorganisms that are present in human blood and can cause diseases in humans.

Front 990

Bloodborne Pathogens

Back 990

Microorganisms that are present in human blood and can cause diseases in humans. [1581, 2005]

Front 991

Blue Light Station

Back 991

A location along the trainway, indicated by a blue light, where emergency service or authorized personnel can communicate with the central supervising stations and disconnect traction power.

Front 992

Blunt Start

Back 992

The removal of the incomplete thread at the end of the thread. This is a feature of threaded parts that are repeatedly assembled by hand. Also known as the “Higbee cut.”

Front 993

Boarding Ladder

Back 993

A device used for boarding a vessel from the water, including handles, rails, ladders, steps, or platforms.

Front 994

Boarding Pier (Accessibility)

Back 994

A portion of a pier where a boat is temporarily secured for the purpose of embarking or disembarking.

Front 995

Board of Appeals

Back 995

A group of persons appointed by the governing body of the jurisdiction adopting this Code for the purpose of hearing and adjudicating differences of opinion between the authority having jurisdiction and the citizenry in the interpretation, application, and enforcement of this Code.

Front 996

Boat Slip (Accessibility)

Back 996

That portion of a pier, main pier, finger pier, or float where a boat is moored for the purpose of berthing, embarking, or disembarking.

Front 997

Boatyard

Back 997

A facility used for constructing, repairing, servicing, hauling from the water, storing (on land and in water), and launching of boats.

Front 998

Body Fluid-Borne Pathogen

Back 998

An infectious bacterium or virus carried in human, animal, or clinical body fluids, organs, or tissue.

Front 999

Body Fluids

Back 999

Fluids that are produced by the body, including, but not limited to, blood, semen, mucus, feces, urine, vaginal secretions, breast milk, amniotic fluid, cerebrospinal fluid, synovial fluid, and pericardial fluid.

Front 1000

Body Fluids

Back 1000

Fluids that are produced by the body, including, but not limited to, blood, semen, mucus, feces, urine, vaginal secretions, breast milk, amniotic fluids, cerebrospinal fluid, synovial fluid, and pericardial fluid.

Front 1001

Body Fluids

Back 1001

Fluids that the body produces including, but not limited to, blood, semen, mucus, feces, urine, vaginal secretions, breast milk, amniotic fluids, cerebrospinal fluid, synovial fluid, pericardial fluid, sputum, and any other fluids that might contain pathogens.

Front 1002

Body Recovery

Back 1002

An operation involving the retrieval of the remains of a deceased victim, but in no case a living person.

Front 1003

Body Waste

Back 1003

The discharge from any fixture, appliance, or appurtenance containing fecal matter or urine.

Front 1004

Bogie

Back 1004

A combination of two axles used to support the end of a vehicle.

Front 1005

Bogie

Back 1005

A tandem arrangement of aircraft landing gear wheels. The bogie can swivel up and down so that all wheels follow the ground as the attitude of the aircraft changes or the ground surface changes.

Front 1006

Boiler

Back 1006

A closed vessel in which water is heated, steam is generated, or steam is superheated, or in which any combination thereof takes place by the application of heat from combustible fuels, in a self-contained or attached furnace.

Front 1007

Boiler

Back 1007

A closed vessel in which water is heated, steam is generated, steam is superheated, or any combination thereof by the application of heat from combustible fuels in a self-contained or attached furnace.

Front 1008

Boiler

Back 1008

A closed vessel in which water is heated, steam is generated, steam is superheated, or any combination thereof by the application of heat from combustible fuels, in a self-contained or attached furnace.
[85, 2004]

Front 1009

Boiler

Back 1009

A closed vessel in which water is heated, steam is generated, steam is superheated, or in which any combination thereof takes place by the application of heat from combustible fuels, in a self-contained or attached furnace.

Front 1010

Boiler Control System

Back 1010

The group of control systems that regulates the boiler process, including the combustion control system but not the burner management system.

Front 1011

Boiler Enclosure

Back 1011

The physical boundary for all boiler pressure parts and for the combustion process.

Front 1012

Boiler Room

Back 1012

Any room with a boiler of 5 horsepower or greater.

Front 1013

Boiling Point

Back 1013

The temperature at which the vapor pressure of a liquid equals the surrounding atmospheric pressure.

Front 1014

Boiling Point

Back 1014

The temperature at which the vapor pressure of a liquid equals the surrounding atmospheric pressure. [30, 2003]

Front 1015

Boiling Point

Back 1015

The temperature at which the vapor pressure of a liquid equals the surrounding atmospheric pressure. [30, 2008]

Front 1016

Boiling Point

Back 1016

The temperature at which the vapor pressure of a liquid equals the surrounding atmospheric pressure. For purposes of defining the boiling point, atmospheric pressure shall be considered to be 14.7 psia (760 mm Hg). For mixtures that do not have a constant boiling point, the 20 percent evaporated point of a distillation performed in accordance with ASTM D 86, Standard Test Method for Distillation of Petroleum Products, shall be considered to be the boiling point. [30:1.7.2.1]

Front 1017

Boiling Point

Back 1017

The temperature at which the vapor pressure of a liquid equals the surrounding atmospheric pressure. For purposes of defining the boiling point, atmospheric pressure shall be considered to be 14.7 psia (760 mm Hg). For mixtures that do not have a constant boiling point, the 20 percent evaporated point of a distillation performed in accordance with ASTM D 86 shall be considered to be the boiling point.

Front 1018

Boiling Point

Back 1018

The temperature at which the vapor pressure of a liquid equals the surrounding atmospheric pressure. For purposes of defining the boiling point, atmospheric pressure shall be considered to be 14.7 psia (760 mm Hg). For mixtures that do not have a constant boiling point, the 20 percent evaporated point of a distillation performed in accordance with ASTM D 86, Standard Test Method for Distillation of Petroleum Products at Atmospheric Pressure, shall be considered to be the boiling point.

Front 1019

Boiling Point

Back 1019

The temperature at which the vapor pressure of a liquid equals the surrounding atmospheric pressure. For purposes of defining the boiling point, atmospheric pressure shall be considered to be 14.7 psia (760 mm Hg). For mixtures that do not have a constant boiling point, the 20 percent evaporated point of a distillation performed in accordance with ASTM D 86, Standard Test Method for Distillation of Petroleum Products at Atmospheric Pressure, shall be considered to be the boiling point. [30, 2003]

Front 1020

Boiling Point

Back 1020

The temperature at which the vapor pressure of a liquid equals the surrounding atmospheric pressure. For purposes of defining the boiling point, atmospheric pressure shall be considered to be 14.7 psia (760 mm Hg). For mixtures that do not have a constant boiling point, the 20 percent evaporated point of a distillation performed in accordance with ASTM D 86, Standard Test Method for Distillation of
Petroleum Products, shall be considered to be the boiling point. [30:3.3]

Front 1021

Boil-Over

Back 1021

An event in the burning of certain oils in an open-top tank when,
after a long period of quiescent burning, there is a sudden increase in
fire intensity associated with expulsion of burning oil from the tank.

Front 1022

Boil-Over

Back 1022

An event in the burning of certain oils in an open-top tank when,
after a long period of quiescent burning, there is a sudden increase in
fire intensity associated with expulsion of burning oil from the tank.
[30, 2008]

Front 1023

Bolsters

Back 1023

Pillows or similarly shaped units containing upholstery material covered by upholstery cover material, which might or might not be attached to the upholstered furniture item but are sold and delivered with it.

Front 1024

Bombproof

Back 1024

A term used to refer to a single anchor point capable of sustaining the actual or potential forces exerted on the rope rescue system without possibility of failure.

Front 1025

Bond

Back 1025

Where referring to bricklaying and masonry chimneys, that connection between brick, stone, or other masonry units formed by lapping them upon one another in carrying up the work, thereby forming an inseparable mass.

Front 1026

Bonded (Bonding)

Back 1026

Connected to establish electrical continuity and conductivity.

Front 1027

Bonded (Bonding)

Back 1027

Connected to establish electrical continuity and conductivity. [70, 2008]

Front 1028

Bonded Warehouse

Back 1028

A facility for storing controlled materials, such as alcohol and tobacco products, that generally has high levels of security and very limited access.

Front 1029

Bonding

Back 1029

An electrical connection between an electrically conductive object and a component of a lightning protection system that is intended to significantly reduce potential differences created by lightning currents.

Front 1030

Bonding

Back 1030

For purposes of tank entry, cleaning, or repair, the joining of metal parts to form an electrically conductive path that will ensure electrical continuity and the capacity to conduct safely any current likely to be imposed.

Front 1031

Bonding

Back 1031

For the purpose of controlling static electric hazards, the process of connecting two or more conductive objects together by means of a conductor so that they are at the same electrical potential, but not necessarily at the same potential as the earth.

Front 1032

Bonding

Back 1032

The permanent joining of metallic parts to form an electrically conductive path that ensures electrical continuity and the capacity to conduct safely any current likely to be imposed.

Front 1033

Bonding

Back 1033

The permanent joining of metallic parts to form an electrically conductive path that ensures electrical continuity and the capacity to conduct safely any current likely to be imposed. [70, 2005]

Front 1034

Bonding

Back 1034

The process of connecting two or more conductive objects together by means of a conductor.

Front 1035

Bonding (Bonded)

Back 1035

The permanent joining of metallic parts to form an electrically conductive path that ensures electrical continuity and the capacity to conduct safely any current likely to be imposed. [70:100]

Front 1036

Bonding (Bonded)

Back 1036

The permanent joining of metallic parts to form an electrically conductive path that ensures electrical continuity and the capacity to conduct safely any fault current likely to be imposed. [70, 2005]

Front 1037

Bonding (Bonded)

Back 1037

The permanent joining of metallic parts to form an electrically conductive path that will ensure electrical continuity and the capacity to conduct safely any current likely to be imposed. The “permanent joining” can be accomplished by the normal devices used to fasten clean, noncorroded parts together. Machine screws, bolts, brackets, or retainers necessary to allow equipment to function properly are items typically employed for this purpose. While welding and brazing can also be utilized, these preclude easy disassembly, and welding can increase rather than decrease resistance across joints. Metallic parts that are permanently joined to form an electrically conductive path that will ensure electrical continuity and the capacity to conduct safely any current likely to be imposed are bonded.

Front 1038

Bonding Conductor

Back 1038

A conductor used for potential equalization between grounded metal bodies or electrically conductive objects and a lightning protection system.

Front 1039

Bonding Conductor

Back 1039

A normally noncurrent-carrying conductor that is intended to carry leakage current from either the ac or the dc system. Bonding conductors connect underwater metallic objects as part of any cathodic protection system and, if sized in accordance with ABYC E-4, shall be permitted to serve as lightning grounding conductors. If
used, they shall be colored green or green with yellow stripe, or shall be of bare copper.

Front 1040

Bonding Jumper

Back 1040

A reliable conductor to ensure the required electrical conductivity between metal parts required to be electrically connected.

Front 1041

Bonding Jumper

Back 1041

A reliable conductor to ensure the required electrical conductivity between metal parts required to be electrically connected.
[70, 2008]

Front 1042

Bonding Jumper

Back 1042

A reliable conductor to ensure the required electrical conductivity between metal parts required to be electrically connected. This conductor can be solid or stranded or braided, and connected by compatible fittings to separate parts to provide this electrically conductive path. The bonding jumper can also be a screw or a bolt. This bonding jumper can be used alone or in conjunction with other electrically conductive paths. It generally is associated with the equipment-grounding path, but might or might not be electrically linked for a lowest impedance path.

Front 1043

Bonding Jumper, Equipment

Back 1043

The connection between two or more portions of the equipment grounding conductor.

Front 1044

Bonding Jumper, Main

Back 1044

The connection between the grounded circuit conductor and the equipment grounding conductor at the service.

Front 1045

Bonding Jumper, System

Back 1045

The connection between the grounded circuit conductor and the equipment grounding conductor at a separately derived system.

Front 1046

Book Stack

Back 1046

Area dedicated to the storage of library media.

Front 1047

Boom

Back 1047

An assembled section of an aerial device. The boom construction can be of the stressed skin box beam-type, the trussed lattice-type, or the open “U” truss-type design.

Front 1048

Boom

Back 1048

An assembled section of an aerial device. The boom construction can be of the stressed-skin box beam type, the trussed lattice type, or the open “U” truss-type design. [1901, 2003]

Front 1049

Boom

Back 1049

(1) A long pole extending upward at an angle from the mast of a derrick to support or guide objects lifted or suspended. (2) A floating barrier used to confine materials upon the surface of the water (e.g., oil).

Front 1050

Boom Boost Cylinders

Back 1050

The hydraulic cylinders located on the upper boom of an articulating boom aerial device that help lift the upper boom from the lower boom.

Front 1051

Boom Support

Back 1051

A structural component that is attached to the chassis frame and that is used to support the aerial device when it is in the cradled position.

Front 1052

Booster

Back 1052

An electrically driven, sealed gas, in-line, pressure-boosting device that supplies fuel that is consumed by a continuous process without intermediate storage.

Front 1053

Booster Fan

Back 1053

A device used to assist in the supply of air to, or the removal of flue gas products from, the combustion chamber; or to supplement draft capability to achieve required flow through the combustion air or flue gas flow path.

Front 1054

Booster Hose

Back 1054

A non-collapsible hose used under positive pressure having an elastomeric or thermoplastic tube, a braided or spiraled reinforcement, and an outer protective cover.

Front 1055

Booster Supplied Air System

Back 1055

A system that is capable of increasing air pressure from an air storage system or a compressor system.

Front 1056

Bootie

Back 1056

A sock-like extension of the garment leg worn in conjunction with other footwear components.

Front 1057

Bootie

Back 1057

A sock-like extension of the garment or suit leg that covers the entire foot.

Front 1058

Border Light

Back 1058

A permanently installed overhead strip light.

Front 1059

Bottom Air Admission

Back 1059

A method of introducing air to a chain or traveling grate stoker under the stoker.

Front 1060

Bottom Bar (Rolling Steel
Door)

Back 1060

A reinforcing member at the lower edge of the door curtain assembly.

Front 1061

Bottom Circumference

Back 1061

Measurement of upper or lower torso garment along bottom edge of the garment from folded edge to folded edge, and multiplied by 2 to obtain circumference.

Front 1062

Bottom Shield

Back 1062

A protective layer that is installed between the floor and Type FCC flat conductor cable to protect the cable from physical damage and may
or may not be incorporated as an integral part of the cable.

Front 1063

Boundary, Arc Flash
Protection

Back 1063

When an arc flash hazard exists, an approach limit at a distance from
a prospective arc source within which a person could receive a second
degree burn if an electrical arc flash were to occur.

Front 1064

Boundary, Limited Approach

Back 1064

An approach limit at a distance from an exposed energized electrical conductor or circuit part within which a shock hazard exists.

Front 1065

Boundary, Prohibited Approach

Back 1065

An approach limit at a distance from an exposed energized electrical conductor or circuit part within which work is considered the same as making contact with the electrical conductor or circuit part.

Front 1066

Boundary, Restricted Approach

Back 1066

An approach limit at a distance from an exposed energized electrical conductor or circuit part within which there is an increased risk of shock, due to electrical arc over combined with inadvertent movement, for personnel working in close proximity to the energized electrical conductor or circuit part.

Front 1067

Bow

Back 1067

The distance that the end of an aerial ladder or boom deviates from a straight line extension of the base section.

Front 1068

Bow

Back 1068

The front end of a boat or vessel.

Front 1069

Bow

Back 1069

The front end of a boat or vessel. [1405, 2006]

Front 1070

Box Circuit

Back 1070

A circuit that is connected to boxes that transmit an alarm to the communications center.

Front 1071

Braided Reinforcement

Back 1071

A hose reinforcement consisting of one or more layers of interlaced spiraled strands of yarn or wire, with a layer of rubber between each braid.

Front 1072

Brail Fire Safety Curtain

Back 1072

A fire safety curtain that folds up and stores in the space above a proscenium opening.

Front 1073

Branch

Back 1073

Any part of the piping system other than a riser, main, or vent stack.

Front 1074

Branch

Back 1074

A supervisory level established in either the operations or logistics function to provide a span of control.

Front 1075

Branch

Back 1075

The organizational level having functional, geographical, or jurisdictional responsibility for major aspects of incident operations.

Front 1076

Branch Circuit

Back 1076

The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s).

Front 1077

Branch Circuit

Back 1077

The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s). [70:100]

Front 1078

Branch Circuit

Back 1078

The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s). [70, 2005]

Front 1079

Branch Circuit

Back 1079

The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s). [70, 2005](ELS)

Front 1080

Branch Circuit

Back 1080

The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s). [70, 2008]

Front 1081

Branch Circuit, Appliance

Back 1081

A branch circuit that supplies energy to one or more outlets to which appliances are to be connected and that has no permanently connected luminaires that are not a part of an appliance.

Front 1082

Branch Circuit, General-Purpose

Back 1082

A branch circuit that supplies two or more receptacles or outlets for lighting and appliances.

Front 1083

Branch Circuit, Individual

Back 1083

A branch circuit that supplies only one utilization equipment.

Front 1084

Branch Circuit, Multiwire

Back 1084

A branch circuit that consists of two or more ungrounded conductors that have a voltage between them, and a grounded conductor that has equal voltage between it and each ungrounded conductor of the circuit and that is connected to the neutral or grounded conductor of the system.

Front 1085

Branch-Circuit Overcurrent
Device.

Back 1085

A device capable of providing protection for service, feeder, and branch circuits and equipment over the full range of overcurrents between its rated current and its interrupting rating. Branch-circuit overcurrent protective devices are provided with interrupting ratings appropriate for the intended use but no less than 5,000 amperes.

Front 1086

Branch-Circuit Overcurrent
Device

Back 1086

A device capable of providing protection for service, feeder, and branch circuits and equipment over the full range of overcurrents between its rated current and its interrupting rating. Branch-circuit overcurrent protective devices are provided with interrupting ratings appropriate for the intended use but no less than 5,000 amperes. [70,
2008]

Front 1087

Branch-Circuit Selection
Current

Back 1087

The value in amperes to be used instead of the rated-load current in determining the ratings of motor branch-circuit conductors, disconnecting means, controllers, and branch-circuit short-circuit and ground-fault protective devices wherever the running overload protective device permits a sustained current greater than the specified percentage of the rated-load current. The value of
branch-circuit selection current will always be equal to or greater than the marked rated-load current.

Front 1088

Branch Director

Back 1088

A person in a supervisory level position in either the operations or logistics function to provide a span of control.

Front 1089

Branch Duct

Back 1089

The duct work that contains the exhaust air from a single hood or hazard area.

Front 1090

Branch (Lateral) Lines

Back 1090

Those sections or portions of the piping system that serve a room or group of rooms on the same story of the facility. (PIP)

Front 1091

Branch Line

Back 1091

A piping system, generally in a horizontal plane, connecting not more than one hose connection with a standpipe.

Front 1092

Branch Line

Back 1092

Gas piping that conveys gas from a supply line to the appliance.

Front 1093

Branch Lines

Back 1093

The pipes supplying sprinklers, either directly or through sprigs, drops, return bends, or arm-overs.

Front 1094

Branch Sewer

Back 1094

A sewer that receives wastewater from a relatively small area and discharges into a main sewer serving more than one branch sewer area.

Front 1095

Breach

Back 1095

An opening made in the wall, floor, or ceiling of a structure, based on construction type, that can be used for moving rescuers, equipment, or victims into or out of the structure.

Front 1096

Breaching Techniques

Back 1096

Methods that utilize breaking and cutting tools to create safe openings in masonry, concrete, and wood structures.

Front 1097

Break

Back 1097

An individual burst from an aerial shell, generally producing either a visual effect (stars) or noise (salute).

Front 1098

Break-Apart Monitor

Back 1098

A monitor that can be converted for use either in stationary mode on a fire apparatus or in portable mode on a separate ground base.

Front 1099

Breakaway Connection

Back 1099

A joint connecting a fire damper sleeve and attached ductwork that will allow collapse of the ductwork during a fire without disturbing the integrity of the fire damper.

Front 1100

Breakbulk Cargo

Back 1100

Commodities packaged in bags, drums, cartons, crates, and so forth, commonly, but not always, palletized and conventionally stevedored and stowed.

Front 1101

Break Bulk Terminal

Back 1101

A terminal where commodities packaged in bags, drums, cartons, and crates are commonly, but not always, palletized and loaded and unloaded.

Front 1102

Breakdown Strength

Back 1102

The minimum voltage, measured in volts per meter of thickness, necessary to cause a spark through a solid material that is held between electrodes that produce a uniform electric field under specified test conditions.

Front 1103

Breakdown Voltage

Back 1103

The minimum voltage, measured in volts, necessary to cause a spark through a gas mixture between electrodes that produce a uniform electric field under specified test conditions.

Front 1104

Breakout Assembly

Back 1104

An adapter used to connect a multipole connector containing two or more branch circuits to multiple individual branch-circuit connectors.

Front 1105

Breakover

Back 1105

A fire edge that crosses a control line or natural barrier intended to confine the fire and the resultant fire.

Front 1106

Break Tank

Back 1106

A tank providing suction to a fire pump whose capacity is less than the fire protection demand (flow rate times flow duration).

Front 1107

Breathing Air

Back 1107

A respirable gas mixture derived from either normal atmospheric air or from manufactured synthetic air, stored in a compressed state in storage cylinders and respirator breathing air cylinders, and supplied to the user in gaseous form. [1989, 2008]

Front 1108

Breathing Air Cylinder

Back 1108

The pressure vessel or vessels that are an integral part of the SCBA and that contain the breathing gas supply; can be configured as a single cylinder or other pressure vessel, or as multiple cylinders or pressure vessels.

Front 1109

Breathing Air System

Back 1109

A complete assembly of equipment to compress, store, and deliver breathing air for the filling of respirator breathing air cylinders.

Front 1110

Breathing Air System

Back 1110

The complete assembly of equipment such as compressors, a purification system, pressure regulators, safety devices, manifolds, air tanks or receivers, and interconnected piping required to deliver breathing air.

Front 1111

Breathing Air System

Back 1111

The complete assembly of equipment such as compressors, purification system, pressure regulators, safety devices, manifolds, air tanks or receivers, and interconnected piping required to deliver air for breathing. [1901, 2003]

Front 1112

Breeching

Back 1112

The conduit conveying flue gas from the appliance to the chimney.

Front 1113

Bridge

Back 1113

A structure spanning and providing a highway across an obstacle such as a waterway, railroad, or another highway.

Front 1114

Bridge

Back 1114

The vessel’s command and control area, usually enclosed, containing the principal helm, navigation systems, communications systems, and monitoring equipment for the vessel’s operating systems.

Front 1115

Brim

Back 1115

A part of the shell of the helmet extending around the entire circumference of the helmet.

Front 1116

Brim

Back 1116

A part of the shell of the helmet extending outward around the entire circumference of the helmet.

Front 1117

Brim

Back 1117

A part of the shell of the helmet that extends around the entire circumference of the helmet.

Front 1118

Brim Line

Back 1118

A horizontal plane intersecting the point of the front opening of the helmet at the midsagittal plane.

Front 1119

British Thermal Unit (Btu)

Back 1119

The quantity of heat required to raise the temperature of one pound of water 1°F at the pressure of 1 atmosphere and temperature of 60°F; a British thermal unit is equal to 1055 joules, 1.055 kilojoules, and
252.15 calories.

Front 1120

Broiler

Back 1120

A general term including broilers, salamanders, barbecues, and other devices cooking primarily by radiated heat, excepting toasters.

Front 1121

Brush

Back 1121

A collective term that refers to a stand of vegetation dominated by shrubs, woody plants, or low-growing trees.

Front 1122

Btu

Back 1122

Abbreviation for British thermal unit. The quantity of heat needed to raise the temperature of 1 pound of water 1°F.

Front 1123

Btu

Back 1123

Abbreviation for British thermal unit, which is the quantity of heat required to raise the temperature of 1 pound of water 1 degree Fahrenheit (equivalent to 1055 joules).

Front 1124

Bubble

Back 1124

The building block of foam composed of a film of fluid enclosing a volume of air.

Front 1125

Bubble (Foam)

Back 1125

A thin-walled, roughly spherical film of liquid inflated with air.

Front 1126

Bubble (Foam)

Back 1126

A thin-walled, roughly spherical, film of liquid inflated with air. [1901, 2003]

Front 1127

Bubbling Fluidized Bed (BFB)

Back 1127

A fluidized bed in which the fluidizing velocity is less than the terminal velocity of individual bed particles and in which part of the fluidizing gas passes through the bed as bubbles.

Front 1128

Buckle

Back 1128

A load-bearing connector that is an integral part of an auxiliary equipment item and used to connect two pieces of webbing.

Front 1129

Building

Back 1129

An area of the subterranean space that is separated from the common space or the undeveloped space by fire-resistive construction.

Front 1130

Building

Back 1130

Any structure or group of structures in which fixed guideway transit and/or passenger rail vehicles are stored or maintained, including those in which inspection and service functions are performed, and other ancillary structures, such as substations and air-conditioning or ventilation facilities.

Front 1131

Building

Back 1131

Any structure used or intended for supporting any occupancy.

Front 1132

Building

Back 1132

Any structure used or intended for supporting or sheltering any use or occupancy.

Front 1133

Building

Back 1133

Any structure used or intended for supporting or sheltering any use or occupancy. [101, 2003]

Front 1134

Building

Back 1134

Any structure used or intended for supporting or sheltering any use or occupancy. [101, 2006]

Front 1135

Building

Back 1135

Any structure used or intended for supporting or sheltering any use or occupancy. [101, 2009]

Front 1136

Building

Back 1136

A roofed-over structure with or without enclosed walls.

Front 1137

Building

Back 1137

A structure enclosed with walls and a roof and used to enclose an occupancy.

Front 1138

Building

Back 1138

A structure that stands alone or that is cut off from adjoining structures by fire walls with all openings therein protected by approved fire doors.

Front 1139

Building

Back 1139

A structure that stands alone or that is cut off from adjoining structures by fire walls with all openings therein protected by approved fire doors. [70, 2008]

Front 1140

Building

Back 1140

A structure, usually enclosed by walls and a roof, constructed to provide support or shelter for an intended occupancy.

Front 1141

Building

Back 1141

A structure, usually enclosed by walls and a roof, constructed to provide support or shelter for an intended occupancy.
[1141, 2008]

Front 1142

Building

Back 1142

A three-dimensional space that is enclosed by a roof and a wall or
walls that cover more than one-half of the possible area of the sides of
the space, is of sufficient size to allow entry by personnel, will likely
limit the dissipation of heat or dispersion of vapors, and restricts
access for fire fighting.

Front 1143

Building Area

Back 1143

The area included within surrounding exterior walls (or exterior walls and fire walls) exclusive of vent shafts and courts. Areas of the
building not provided with surrounding walls shall be included in the building areas if such areas are included within the horizontal projection of the roof or floor above.

Front 1144

Building Automation System

Back 1144

An automated system used to control building functions such as
HVAC control, lighting, and smoke management.

Front 1145

Building Code

Back 1145

The building code referenced in Chapter 2 of this code.

Front 1146

Building Code

Back 1146

The building code referenced in Section 2.2.

Front 1147

Building Code

Back 1147

The building or construction code adopted by the jurisdiction.

Front 1148

Building Component

Back 1148

Any subsystem, subassembly, or other system designed for use in or integral with or as part of a structure, which can include structural, electrical, mechanical, plumbing, and fire protection systems, and other systems affecting health and safety.

Front 1149

Building Construction

Back 1149

Types of construction based on the combustibility and the fire resistance rating of a building’s structural elements.

Front 1150

Building Drain

Back 1150

In plumbing, the part of the lowest horizontal piping of a drainage system that receives the discharge from soil, waste, and other drainage pipes inside the walls of the building and conveys it to the building sewer (house connection or lateral).

Front 1151

Building Fire Alarm System

Back 1151

A protected premises fire alarm system that includes any of the features identified in 6.3.3.1 and that serves the general fire alarm needs of a building or buildings and that provides fire department or occupant notification or both. (SIG-PRO)

Front 1152

Building Heating Appliance-Type Factory-Built Chimney

Back 1152

A heating appliance chimney suitable for continuous use at 1000°F (538°C), composed of listed, factory-built components, designed for open, non-enclosed use at specified minimum clearances to combustibles, and assembled in accordance with the terms of its listing to form the completed chimney. [97, 2003]

Front 1153

Building Height

Back 1153

The vertical distance from the grade plane to the average elevation of the highest roof surface.

Front 1154

Building Height

Back 1154

The vertical distance from the grade to the average elevation of the highest roof surface. [5000, 2006]

Front 1155

Building Integrated
Photovoltaics

Back 1155

Photovoltaic cells, devices, modules, or modular materials that are integrated into the outer surface or structure of a building and serve as the outer protective surface of that building.

Front 1156

Building Manager

Back 1156

The authorized person, formally and officially appointed or designated by the governing body or a responsible party, who is charged with the duties and responsibilities of providing and ensuring the overall management, operation, and maintenance for that facility or institution.

Front 1157

Buildings

Back 1157

Structures, usually enclosed by walls and a roof, constructed to provide support or shelter for an intended occupancy.

Front 1158

Buildings

Back 1158

Structures, usually enclosed by walls and a roof, constructed to provide support or shelter for an intended occupancy.
[5000, 2006]

Front 1159

Buildings

Back 1159

Structures, usually enclosed by walls and a roof, constructed to provide support or shelter for an intended occupancy. [ASCE/SEI 7:1.2]

Front 1160

Building Service Equipment

Back 1160

The items or components that provide lighting, heating, ventilation, and air conditioning, along with elevators and escalators.

Front 1161

Building Services and Support
Areas

Back 1161

These areas or rooms typically include utility areas, mechanical equipment areas, electrical switch gear, maintenance shops, loading docks, and associated storage areas.

Front 1162

Building Services Equipment

Back 1162

Building mechanical, electrical, lighting, and power systems that are found in typical office buildings.

Front 1163

Building Sewer

Back 1163

In plumbing, a sewer that consists of the extension from the building drain to the public sewer or other place of disposal; also called house connection or lateral.

Front 1164

Building System

Back 1164

Plans, specifications, and documentation for a system of manufactured building or for a type or a system of building components, which can include structural, electrical, mechanical, plumbing, and fire protection systems, and other systems affecting health and safety, and including such variations thereof as are specifically permitted by regulation, and which variations are submitted as part of the building system or amendment thereto.

Front 1165

Building Systems

Back 1165

An assembly or set of units made up of components that provide services to spaces in a building.

Front 1166

Built-in Residential-Type
Range

Back 1166

A range designed to be recessed into, placed upon, or attached to counters, cabinets, walls, or partitions.

Front 1167

Built-Out Area

Back 1167

Those portions of a development that have been populated to planned capacity with structures.

Front 1168

Built-Up Roofing

Back 1168

A continuous, semiflexible membrane consisting of plies of saturated felts, coated felts, fabrics or mats assembled in place with alternate layers of bitumen, and surfaced with mineral aggregate, bituminous materials, or a granule surfaced sheet (abbreviation, BUR). [ASTM D
1079: 2.1]

Front 1169

Bulk Air System

Back 1169

A method of piping air tanks together to allow air to be supplied to an air system or SCBA fill station, using one or more tanks where all
tanks are used simultaneously and are at the same pressure.

Front 1170

Bulk Cargo

Back 1170

Unpackaged commodities carried in the holds or tanks of cargo vessels and tankers and generally transferred by such means as conveyors, clamshells, and pipeline.

Front 1171

Bulkhead

Back 1171

A liquidtight transverse closure between compartments of a cargo tank.

Front 1172

Bulkhead

Back 1172

A vertical barrier across the rack.

Front 1173

Bulkhead

Back 1173

A vertical structural wall, usually of stone, timber, metal, concrete, or synthetic material, constructed along, and generally parallel to, the shoreline to retain earth as an extension of the upland, and often to provide suitable water depth at the waterside face.

Front 1174

Bulkhead

Back 1174

A vertical structure constructed between the deck and overhead that divides the vessel interior into spaces.

Front 1175

Bulkhead

Back 1175

(1) One of the upright, vertical partitions dividing a ship into compartments and serving to retard the spread of leakage or fire. (2) A fixed pier or wall back-filled to be continuous with the land.

Front 1176

Bulkhead

Back 1176

(1) The exterior walls of a store building that support show windows; (2) a structure above the roof of a building, enclosing elevator machinery, tanks, stairs, or the like, or the part of a shaft extending above the roof; (3) a retaining structure intended to withstand lateral pressure; or (4) a vertical structural wall, usually of stone, timber, metal, concrete, or synthetic material, constructed along, and generally parallel to, the shoreline to retain earth as an extension of the upland, and often to provide suitable water depth at the waterside face.

Front 1177

Bulkhead Building

Back 1177

A structure generally having a solid-fill-type substructure and forming the land end of one or more piers.

Front 1178

Bulkhead Panel

Back 1178

A component of a division or bulkhead.

Front 1179

Bulkhead Wall

Back 1179

A retaining wall of timber, stone, concrete, steel, or other material built along, or parallel to, navigable waters.

Front 1180

Bulk Hydrogen Compressed
Gas System

Back 1180

An assembly of equipment, consisting of but not limited to, storage containers, pressure regulators, pressure relief devices, vaporizers, manifolds, and piping, with a storage capacity of more than 400 ft3 (scf) (11 m3) of compressed hydrogen gas including unconnected reserves on hand at the site. The bulk system terminates at the point where the gas supply, at service pressure, first enters the supply line. The containers are either stationary or movable, and the source gas is stored as a compressed gas.

Front 1181

Bulk Inert Gas System

Back 1181

An assembly of equipment, consisting of but not limited to, storage containers, pressure regulators, pressure relief devices, vaporizers, manifolds, and piping, with a storage capacity of more than 20,000 ft3 (scf) (566 m3) of inert gas including unconnected reserves on hand at the site. The bulk system terminates at the point where the gas supply, at service pressure, first enters the supply line. The containers are either stationary or movable, and the source gas is stored as a compressed gas or cryogenic fluid.

Front 1182

Bulk Liquefied Hydrogen Gas
System

Back 1182

An assembly of equipment, consisting of but not limited to, storage containers, pressure regulators, pressure relief devices, vaporizers, manifolds, and piping, with a storage capacity of more than 39.7 gal (150 L) of liquefied hydrogen including unconnected reserves on hand at the site. The bulk system terminates at the point where the gas supply, at service pressure, first enters the supply line. The containers are either stationary or movable, and the source gas is stored as a cryogenic fluid.

Front 1183

Bulk Liquid Storage

Back 1183

The storage of more than 2271 L (600 gal) in a single container.

Front 1184

Bulk Merchandising Retail
Building

Back 1184

A building in which the sales area includes the storage of combustible materials on pallets, in solid piles, or in racks in excess of 12 ft
(3660 mm) in storage height.

Front 1185

Bulk Merchandising Retail
Building

Back 1185

A building in which the sales area includes the storage of combustible materials on pallets, in solid piles, or in racks in excess of 12 ft
(3660 mm) in storage height. [5000, 2009]

Front 1186

Bulk Merchandising Retail
Building

Back 1186

A building in which the sales area includes the storage of combustible materials on pallets, in solid piles, or in racks in excess of 12 ft (3.7 m) in storage height. [101:3.3]

Front 1187

Bulk Mix

Back 1187

A mass of explosive material prepared for use in bulk form without packaging.

Front 1188

Bulk Mix Delivery Equipment

Back 1188

Equipment (usually a motor vehicle with or without a mechanical delivery device) that transports explosive materials in bulk form for mixing or loading directly into boreholes, or both.

Front 1189

Bulk Nitrous Oxide System

Back 1189

An assembly of equipment as described in the definition of bulk oxygen system that has a storage capacity of more than 3200 lb (1452 kg) [approximately 28,000 ft3 (793 m3) (at normal temperature and pressure)] of nitrous oxide. (PIP)

Front 1190

Bulk Oxygen System

Back 1190

An assembly of equipment such as oxygen storage containers, pressure regulators, pressure relief devices, vaporizers, manifolds, and interconnecting piping that has a storage capacity of more than 566 m3 (20,000 ft3) of oxygen (at normal temperature and pressure) including unconnected reserves on hand at the site. (PIP)

Front 1191

Bulk Oxygen System

Back 1191

An assembly of equipment, such as oxygen storage containers, pressure regulators, pressure relief devices, vaporizers, manifolds, and interconnecting piping, with a storage capacity of more than 20,000 ft3 (scf) (566 m3) of oxygen including unconnected reserves on hand at the site. The bulk oxygen system terminates at the point where oxygen at service pressure first enters the supply line. The oxygen containers are either stationary or movable, and the oxygen is stored as a compressed gas or cryogenic fluid.

Front 1192

Bulk Oxygen System

Back 1192

An assembly of equipment, such as oxygen storage containers, pressure regulators, pressure relief devices, vaporizers, manifolds, and interconnecting piping, with a storage capacity of more than 20,000 ft3 (scf) (566 m3) of oxygen including unconnected reserves on hand at the site. The bulk oxygen system terminates at the point where oxygen at service pressure first enters the supply line. The oxygen containers are either stationary or movable, and the oxygen is stored as a compressed gas or cryogenic fluid. [55, 2005]

Front 1193

Bulk Packaging

Back 1193

Any packaging, including transport vehicles, having a liquid capacity of more than 119 gal (450 L), a solids capacity of more than 882 lb (400 kg), or a compressed gas water capacity of more than 1001 lb (454 kg).

Front 1194

Bulk Plant

Back 1194

A facility where the primary function is to store LP-Gas prior to further distribution. LP-Gas is received by cargo tank vehicle, railroad tank car, or pipeline, and then distributed by portable container (package) delivery, by cargo tank vehicle, or through gas piping.

Front 1195

Bulk Plant or Terminal

Back 1195

That portion of a property where liquids are received by tank vessel, pipelines, tank car, or tank vehicle and are stored or blended in bulk for the purpose of distributing such liquids by tank vessel, pipeline, tank car, tank vehicle, portable tank, or container.

Front 1196

Bulk Plant or Terminal

Back 1196

That portion of a property where liquids are received by tank vessel, pipelines, tank car, or tank vehicle and are stored or blended in bulk for the purpose of distributing such liquids by tank vessel, pipeline, tank car, tank vehicle, portable tank, or container. [30:3.3.32.1]

Front 1197

Bulk Plant or Terminal

Back 1197

That portion of a property where liquids are received by tank vessel, pipeline, tank car, or tank vehicle and are stored or blended in bulk for the purpose of distributing such liquids by tank vessel, pipeline, tank car, tank vehicle, portable tank, or container.

Front 1198

Bulk Raw Grain

Back 1198

Grain materials, such as cereal grains, oilseeds, and legumes, that have not undergone processing or size reduction.

Front 1199

Bulk Salute

Back 1199

A collection of salutes or salute components containing more than 2 lb (0.9 kg) of salute powder, unless the salutes are mixed with other types of aerial shells so that the total quantity of salutes to other types of shells is less than 50 percent in a single magazine.

Front 1200

Bulk Salute Powder

Back 1200

A quantity of salute powder in an amount exceeding 1 lb (0.45 kg).

Front 1201

Bulk Solid Storage

Back 1201

The storage of more than 2722 kg (6000 lb) in a single container.

Front 1202

Bulk System

Back 1202

An assembly of equipment, such as storage containers, pressure regulators, pressure relief devices, vaporizers, manifolds, and interconnecting piping, that terminates at the source valve of oxygen or
1452 kg (3200 lb) of nitrous oxide including unconnected reserves on the site. (PIP)

Front 1203

Bulk Terminal

Back 1203

A terminal where unpackaged commodities carried in the holds and tanks of cargo vessels and tankers and generally transferred by such means as conveyors, clamshells, and pipelines are handled.

Front 1204

Bullet-Resistant Construction

Back 1204

Refers to magazine walls or doors, constructed to resist penetration of a bullet of 150-grain M2 ball ammunition having a nominal muzzle velocity of 824 mps (2700 fps) when fired from a 0.30-caliber rifle from a distance of 30.5 m (100 ft) perpendicular to the wall or door.

Front 1205

Bullet-Sensitive Explosive
Material

Back 1205

Explosive material that can be detonated by 150 gr (9.8 g) M2 ball ammunition having a nominal muzzle velocity of 2700 ft/sec
(824 m/sec) where fired from a 0.30 caliber rifle at a distance of 100 ft
(30 m), measured perpendicularly. [495, 2006]

Front 1206

Bullet-Sensitive Explosive
Material

Back 1206

Explosive material that can be detonated by 150-grain M2 ball ammunition having a nominal muzzle velocity of 824 mps (2700 fps) when fired from a 0.30-caliber rifle at a distance of 30.5 m (100 ft), measured perpendicularly.

Front 1207

Bull Switch

Back 1207

An externally operated wall-mounted safety switch that may or may not contain overcurrent protection and is designed for the connection of portable cables and cords.

Front 1208

Bumper (Fire Safety Curtain)

Back 1208

A filled fabric pocket below the bottom batten or frame member of a fire safety curtain designed to press against the floor.

Front 1209

Bumpers

Back 1209

Stops to limit the closing or opening movement of a sliding door.

Front 1210

Bundled

Back 1210

Cables or conductors that are tied, wrapped, taped, or otherwise periodically bound together.

Front 1211

Bungalow Utility-Type Range

Back 1211

A range having an additional section for gas, liquid, or solid fuel that is designed for space heating and heating a solid top section but not for oven heating.

Front 1212

Bunker

Back 1212

An enclosure to store raw fuel.

Front 1213

Bunkering

Back 1213

The loading of a ship’s bunker or tank with fuel oil for use in connection with propulsion or auxiliary equipment.

Front 1214

Buoyancy

Back 1214

(1) The tendency or capacity to remain afloat in a liquid. (2) The upward force of a fluid upon a floating object.

Front 1215

Buoyancy Control Device

Back 1215

Jacket or vest that contains an inflatable bladder for the purposes of controlling buoyancy.

Front 1216

Buried

Back 1216

Installations in which the top of the container (excluding the manway) is below the surrounding grade.

Front 1217

Burner

Back 1217

A device for the final conveyance of gas, or a mixture of gas and air, to the combustion zone.

Front 1218

Burner

Back 1218

A device or group of devices for the introduction of fuel and air into a combustion chamber at the velocity, turbulence, and concentration required to maintain ignition and combustion of fuel.

Front 1219

Burner

Back 1219

A device or group of devices used for the introduction of fuel, air, oxygen, or oxygen-enriched air into a furnace at the required velocities, turbulence, and concentration to maintain ignition and combustion of fuel.

Front 1220

Burner Management System

Back 1220

The control system dedicated to combustion safety and operator assistance in the starting and stopping of fuel preparation and burning equipment and for preventing misoperation of and damage to fuel preparation and burning equipment.

Front 1221

Burner Shutoff Valve

Back 1221

In a pulverized fuel system, a valve that is installed in the fuel line between the pulverizer and the burner.

Front 1222

Burner System

Back 1222

One or more burners operated as a unit by a common safety shutoff valve(s).

Front 1223

Burner Turndown

Back 1223

The ratio of maximum to minimum burner fuel-input rates.

Front 1224

Burn-In

Back 1224

The procedure used in starting up a special atmosphere furnace to replace air within the heating chamber(s) and vestibule(s) with flammable special atmosphere.

Front 1225

Burning

Back 1225

Continuous combustion including smoldering.

Front 1226

Burning

Back 1226

The process of self-perpetuating combustion, with or without an open flame. Smoldering is burning.

Front 1227

Burning Out

Back 1227

Setting fire inside a control line to consume the fuel between the edge of the fire and the control line.

Front 1228

Burning Velocity

Back 1228

The rate of flame propagation relative to the velocity of the unburned gas that is ahead of it.

Front 1229

Burn-It

Back 1229

A fire-fighting strategy that allows for the free-burn of a tire fire.

Front 1230

Burn-off Pilot

Back 1230

A pilot that ignites the flame curtain or special processing atmosphere discharging from the furnace or generator.

Front 1231

Burn-Out

Back 1231

The procedure used in shutting down or idling a special atmosphere to replace flammable atmosphere within the heating chamber(s) and vestibule(s) with nonflammable atmosphere.

Front 1232

Burst Pressure

Back 1232

The pressure at which a component ruptures.

Front 1233

Burst Pressure

Back 1233

The pressure at which a hydraulic component fails due to stresses induced as a result of the pressure.

Front 1234

Burst Test Pressure

Back 1234

A pressure equal to at least three times the service test pressure.

Front 1235

Bury-It

Back 1235

A fire-fighting strategy in which a tire pile is buried with soil, sand, gravel, cement dust, or other cover material.

Front 1236

Business Continuity

Back 1236

An ongoing process supported by senior management and funded to ensure that the necessary steps are taken to identify the impact of potential losses, maintain viable recovery strategies, recovery plans, and continuity of services.

Front 1237

Business Interruption

Back 1237

The effect on business operations from the time that equipment was initially lost or damaged until it has been restored to the former level of operation.

Front 1238

Business Occupancy

Back 1238

An occupancy used for account and record keeping or the transaction of business other than mercantile. [101, 2006]

Front 1239

Business Occupancy

Back 1239

An occupancy used for account and record keeping or the transaction of business other than mercantile. [5000:3.3]

Front 1240

Business Occupancy

Back 1240

An occupancy used for the transaction of business other than mercantile.

Front 1241

Business Occupancy

Back 1241

An occupancy used for the transaction of business other than mercantile. [5000, 2009]

Front 1242

Business Occupancy

Back 1242

An occupancy used for account and record keeping or the transaction of business other than mercantile. [101:3.3]

Front 1243

Busway

Back 1243

A grounded metal enclosure containing factory-mounted, bare or insulated conductors, which are usually copper or aluminum bars, rods, or tubes.

Front 1244

Butt

Back 1244

The end of the beam that is placed on the ground, or other lower support surface, when ground ladders are in the raised position.

Front 1245

Butt

Back 1245

The end of the beam that is placed on the ground, or other lower support surface, when ground ladders are in the raised position. [1931:3.3]

Front 1246

Button Tipper (Actuator
Placer)

Back 1246

The machine that places the valve actuator (spray tip) onto the aerosol container after the base product has been added.

Front 1247

Butt Spurs (Feet)

Back 1247

That component of ground ladder support that is in contact with the lower support surface to reduce slippage.

Front 1248

Butt Spurs (Feet)

Back 1248

That component of ground ladder support that is in contact with the lower support surface to reduce slippage. [1931:3.3]

Front 1249

BWR

Back 1249

Boiling water reactor.

Front 1250

Bypass

Back 1250

An airflow-compensating opening that maintains a relatively constant volume exhaust through a chemical fume hood regardless of sash position, serving to limit the maximum face velocity as the sash is lowered.

Front 1251

Bypass-Isolation Switch

Back 1251

A manually operated device used in conjunction with an automatic transfer switch to provide a means of directly connecting load conductors to a power source and disconnecting the automatic transfer switch.

Front 1252

Bypass Stack

Back 1252

A stack applied in addition to and separate from the normal HRSG exhaust stack that allows combustion turbine exhaust gas to flow independently to the atmosphere.

Front 1253

Cp

Back 1253

The seismic coefficient that combines ground motion and seismic response factors from ASCE 7-05.

Front 1254

Cabana

Back 1254

A portable, demountable, or permanent room enclosure or other building erected or constructed for human occupancy.

Front 1255

Cabinet

Back 1255

An enclosure that is designed for either surface mounting or flush mounting and is provided with a frame, mat, or trim in which a swinging door or doors are or can be hung.

Front 1256

Cabinet

Back 1256

An enclosure that is designed for either surface mounting or flush mounting and is provided with a frame, mat, or trim in which a swinging door or doors are or can be hung. [70, 2008]

Front 1257

Cable

Back 1257

A combination of conductors insulated from one another with a common covering that is not a cord or Type AWM Appliance Wiring Material.

Front 1258

Cable

Back 1258

A conductor formed of a number of wires stranded together.

Front 1259

Cable

Back 1259

A factory assembly of two or more conductors having an overall covering.

Front 1260

Cable

Back 1260

A factory assembly of two or more conductors having an overall covering. [70, 2005]

Front 1261

Cable

Back 1261

A wire rope used to transmit forces from one component to another for the purpose of extending or retracting an aerial device.

Front 1262

Cable Assembly

Back 1262

A powered rescue tool component consisting of the power cable with all permanently attached connectors that connect the powered rescue tool to the power unit.

Front 1263

Cablebus

Back 1263

An assembly of insulated conductors with fittings and conductor terminations in a completely enclosed, ventilated protective metal housing. Cablebus is ordinarily assembled at the point of installation from the components furnished or specified by the manufacturer in accordance with instructions for the specific job. This assembly is designed to carry fault current and to withstand the magnetic forces of such current.

Front 1264

Cable Connector

Back 1264

A connector designed to join Type FCC cables without using a junction box.

Front 1265

Cable Entrance Facility (CEF) Area

Back 1265

The area or enclosed room of a telecommunications facility that contains cable entrance facility equipment.

Front 1266

Cable Entrance Facility (CEF) Equipment

Back 1266

The wire and cable in the cable entrance facility.

Front 1267

Cableless Control

Back 1267

Control devices employing cableless (e.g., radio, infrared) techniques for transmitting commands and signals between a machine control system and operator control station(s).

Front 1268

Cable Management System

Back 1268

An apparatus designed to control and organize unused lengths of cable or cord at electrified truck parking spaces.

Front 1269

Cable Separation Guide

Back 1269

The mechanism that aligns and separates the cable when it is wound on the drum of an aerial ladder’s extension winch.

Front 1270

Cable Sheath

Back 1270

A covering over the conductor assembly that may include one or more metallic members, strength members, or jackets.

Front 1271

Cable Sheath

Back 1271

A covering over the optical fiber assembly that includes one or more jackets and may include one or more metallic members or strength members.

Front 1272

Cable Tray Fire Break

Back 1272

A noncombustible or limited-combustible material installed in vertical or horizontal cable trays to limit fire spread.

Front 1273

Cable Tray System

Back 1273

A unit or assembly of units or sections and associated fittings forming a structural system used to securely fasten or support cables and raceways.

Front 1274

Cable Tray System

Back 1274

A unit or assembly of units or sections and associated fittings forming a structural system used to securely fasten or support cables and raceways. [70:392.2]

Front 1275

Cable Trunking System

Back 1275

A system of enclosures comprised of a base and a removable cover intended for the complete surrounding of insulated conductors, cables, and cords.

Front 1276

Cable TV

Back 1276

One- and two-way communications service provided over a video network, generally through coaxial cable.

Front 1277

Cable with Flexible Properties

Back 1277

A cable or special cable that is malleable but without flexing or constant flexing properties.

Front 1278

CAD Terminal

Back 1278

An electronic device that combines a keyboard and a display screen to allow exchange of information between a telecommunicator and one or more computers in the system/network.

Front 1279

Cage

Back 1279

A box or enclosure from which an animal or animals cannot normally escape without human intervention.

Front 1280

Cake

Back 1280

A chain-fused firework that propels a series of aerial shell, comet, or mine effects into the air from collectively attached tubes.

Front 1281

Caking

Back 1281

A phenomenon that occurs when moisture chemically reacts with a dry chemical fire-extinguishing agent. This reaction results in materials that, being hydrated by moisture, stick together to form a large agglomerate, or what is more commonly referred to as lumps.

Front 1282

Calcination

Back 1282

The endothermic chemical reaction that takes place when converting calcium carbonate or calcium hydroxide to calcium oxide.

Front 1283

Calcium to Sulfur Molar Ratio
(Ca/S)

Back 1283

The ratio of the total moles of calcium in the sorbent fed to the boiler to the total moles of sulfur in the fuel fed to the boiler.

Front 1284

Calculation and Design

Back 1284

The process of computing, with the use of equations, graphs, or tables, the system characteristics such as flow rate, pipe size, area, or volume protected by each nozzle, nozzle pressure, and pressure drop.

Front 1285

Calibrate

Back 1285

To correlate the reading of an instrument or system of measurement with a standard.

Front 1286

Call

Back 1286

A request for assistance to which equipment and personnel are deployed.

Front 1287

Call Detail Recording (CDR)

Back 1287

A system that provides a record of each call, including automatic number identification (ANI), trunk number, and answering attendant number; and the time of seizure, answer, and disconnect/transfer.

Front 1288

Call for Help

Back 1288

The time that a third party or the patient first attempts to contact outside assistance.

Front 1289

Call Intake

Back 1289

The procedure for answering the phone or other device that is used to receive a signal or message from a person or device indicating the need for medical assistance, learning the nature of the emergency, and verifying the address of the emergency.

Front 1290

Call Processing

Back 1290

The interval from call intake by the unit-dispatching agency to the time of unit notification, including answering the phone (alarm), gathering vital information, and initiating a response by dispatching the appropriate unit(s).

Front 1291

Calorie

Back 1291

The amount of heat necessary to raise 1 gram of water 1°C at 15°C; a calorie is 4.184 joules, and there are 252.15 calories in a British thermal unit (Btu).

Front 1292

Camp

Back 1292

A geographical site, within the general incident area, separate from the base, equipped and staffed to provide food, water, and sanitary services to incident personnel.

Front 1293

Campaign

Back 1293

A component of an organizational fire and life safety education strategy with a predetermined time frame.

Front 1294

Campground

Back 1294

Any parcel or tract of land under the control of any person, organization, or governmental entity wherein two or more recreational vehicle, recreational park trailer, and/or other camping unit sites are offered for use by the public or members of an organization for overnight stays.

Front 1295

Camping Trailer

Back 1295

A vehicular portable unit mounted on wheels and constructed with collapsible partial side walls that fold for towing by another vehicle and unfold at the campsite to provide temporary living quarters for recreational, camping, or travel use. (See Recreational Vehicle.)

Front 1296

Camping Trailer

Back 1296

A vehicular unit that is mounted on wheels and constructed with collapsible partial side walls that fold for towing by another vehicle and unfold at the campsite to provide temporary living quarters for recreational, camping, or travel use. (See also 3.3.19, Recreational Vehicle.)

Front 1297

Camping Unit

Back 1297

A portable structure, shelter, or vehicle designed and intended for occupancy by persons engaged in RVing or camping.

Front 1298

Camping Unit Site

Back 1298

A specific area within a recreational vehicle park or campground that is set aside for use by a camping unit.

Front 1299

Camping Unit Stand

Back 1299

A specific area within a recreational vehicle park or campground set aside for use by a camping unit.

Front 1300

Candela (cd)

Back 1300

A unit of measure used in measuring the effective intensity of a flashing light.

Front 1301

Candidate

Back 1301

A person who has applied to become a fire inspector or plan examiner.

Front 1302

Candidate

Back 1302

A person who has submitted an application to become a member of the fire department.

Front 1303

Candidate

Back 1303

A person who has submitted an application to become a member of the fire department. [1500, 2007]

Front 1304

Canopy

Back 1304

Any fixed roof-like structure that is self-supporting in whole or in part, but having no sidewalls or curtains other than valances not exceeding
18 in. (455 mm) in depth.

Front 1305

Canopy Hood

Back 1305

A suspended ventilating device used only to exhaust heat, water vapor, odors, and other nonhazardous materials. This is not a chemical fume hood and generally is not effective for exhausting toxic or flammable materials.

Front 1306

Can Pump

Back 1306

A vertical shaft turbine-type pump in a can (suction vessel) for installation in a pipeline to raise water pressure.

Front 1307

CANUTEC

Back 1307

The Canadian Transport Emergency Center, operated by Transport Canada, which provides emergency response information and assistance on a 24-hour basis for responders to hazardous materials/weapons of mass destruction (WMD) incidents.

Front 1308

Canyon

Back 1308

An enclosure beside or above a series of hot cells for the purpose of servicing the hot cells.

Front 1309

Capacitance

Back 1309

The amount of charge, measured in coulombs per volt or in farads, that must be stored on a specified body or material to raise the potential difference by 1 volt.

Front 1310

Capacitance Sensor

Back 1310

A sensor that detects a change in capacitance when a person touches or comes in close proximity to an object.

Front 1311

Capacity

Back 1311

The quantity of electricity (electric charge) usually expressed in ampere-hour (A-h) that a fully charged battery can deliver under specified conditions.

Front 1312

Capacity

Back 1312

The water volume of a container in liters (gallons).

Front 1313

Capacity (of a Place or
Location)

Back 1313

The maximum number or amount of exposed that a place or location can accommodate.

Front 1314

Capacity (of a Route or Path)

Back 1314

The maximum flow rate of exposed that a route or path can handle.

Front 1315

Cap-Sensitive Explosive
Material

Back 1315

Any explosive material that can be detonated by means of a No. 8 blasting cap or its equivalent.

Front 1316

Captive

Back 1316

A firm or group that forms an insurance company for their own purposes.

Front 1317

Carabiner

Back 1317

An auxiliary equipment system item; load-bearing connector with a self-closing gate used to join other components of life safety rope.

Front 1318

Carbon Dioxide

Back 1318

A colorless, odorless, electrically nonconductive inert gas that is a suitable medium for extinguishing Class B and Class C fires.

Front 1319

Carbon Monoxide Alarm

Back 1319

A single- or multiple-station carbon monoxide alarm responsive to carbon monoxide.

Front 1320

Carbon Monoxide Alarm
Signal

Back 1320

A signal indicating a concentration of carbon monoxide at or above the alarm threshold that could pose a risk to the life safety of the occupants and that requires immediate action.

Front 1321

[Carbon Monoxide Detection] Control Unit

Back 1321

A component of the [carbon monoxide detection] system, provided with primary and secondary power sources, which receives signals from initiating devices or other [carbon monoxide detection] control units, and processes these signals to determine part or all of the required [carbon monoxide detection] system output function(s). [72, 2007]

Front 1322

Carbon Monoxide Detection
System

Back 1322

A system or portion of a combination system that consists of a control unit, components, and circuits arranged to monitor and annunciate the status of carbon monoxide alarm initiating devices and to initiate the appropriate response to those signals.

Front 1323

Carbon Monoxide Detector

Back 1323

A device connected to an alarm control unit having a sensor that responds to carbon monoxide.

Front 1324

Carbon Monoxide Monitor

Back 1324

A monitoring device that samples a purified air stream for trace elements of carbon monoxide (CO).

Front 1325

Carbon Monoxide Monitor

Back 1325

A monitoring device that samples a purified air stream for trace elements of carbon monoxide (CO). [1901, 2003]

Front 1326

[Carbon Monoxide] Safety
Functions

Back 1326

Building and [carbon monoxide] control functions that are intended to increase the level of life safety for occupants or to control the spread of the harmful effects of [carbon monoxide]. [72, 2007]

Front 1327

[Carbon Monoxide] Warning
Equipment

Back 1327

Any detector, alarm, device, or material related to single- and multiple-station alarms or household carbon monoxide detection systems. [72, 2007]

Front 1328

Carboxyhemoglobin
Saturation

Back 1328

The percent of blood hemoglobin converted to carboxyhemoglobin due to reaction with inhaled carbon monoxide.

Front 1329

Carburetion Valve

Back 1329

A control valve that meets the functional requirements of an automatic safety shutoff valve by being capable of automatically closing within 1 second to stop the flow of gas to the engine.

Front 1330

Carcinogen/Carcinogenic

Back 1330

A cancer-causing substance that is identified in one of several published lists, including, but not limited to, NIOSH Pocket Guide to Chemical Hazards, Hazardous Chemicals Desk Reference, and the ACGIH
2007 TLVs and BEIs.

Front 1331

Cardiopulmonary
Resuscitation (CPR)

Back 1331

A system used to revive a victim whose heart and breathing have stopped; it includes applying external heart massage and ventilating the lungs and may be accomplished manually or mechanically.

Front 1332

Care

Back 1332

Procedures for cleaning, decontamination, and storage of protective clothing and equipment.

Front 1333

Care

Back 1333

Procedures for cleaning, decontamination, and storage of protective clothing and equipment. [1851, 2001]

Front 1334

Care

Back 1334

Procedures for cleaning, decontamination, and storage of protective ensembles and ensemble elements.

Front 1335

Care Area

Back 1335

Location where initial medical care is given to injured.

Front 1336

Cargo

Back 1336

Commodities in transit.

Front 1337

Cargo

Back 1337

Commodities in transit. [307, 2006]

Front 1338

Cargo Aircraft

Back 1338

An aircraft that is configured solely to carry cargo and no personnel other than the flight crew and any additional crew required for the care of the cargo.

Front 1339

Cargo Area

Back 1339

That part of the ship that contains the cargo containment system, cargo pump room, and compressor room and that includes the deck areas over both the full beam and the length of the ship located above the aforementioned.

Front 1340

Cargo/Baggage Compartment

Back 1340

An enclosed compartment within, or attached to, an aircraft fuselage that is separate from the passenger and flight crew areas and that is almost always accessible only from the exterior of the fuselage.

Front 1341

Cargo Containment System

Back 1341

The arrangement for containment of cargo including, where applicable, a primary and secondary barrier, associated insulation,
and any intervening spaces and adjacent structures if necessary for the support of these elements.

Front 1342

Cargo Hold

Back 1342

Cargo spaces containing other than bulk liquid cargo.

Front 1343

Cargo Pockets

Back 1343

Pockets located on the protective garment exterior.

Front 1344

Cargo Space

Back 1344

A space for the carriage or storage of items or products that are transported by the vessel.

Front 1345

Cargo Tank

Back 1345

A container that is used to transport LP-Gas as liquid cargo and either is mounted on a conventional truck chassis or is an integral part of a cargo transporting vehicle.

Front 1346

Cargo Tank

Back 1346

A container that is used to transport LP-Gas as liquid cargo and either is mounted on a conventional truck chassis or is an integral part of a cargo transporting vehicle. [58, 2008]

Front 1347

Cargo Tank

Back 1347

A container used for carrying fuels and mounted permanently or otherwise secured on a tank vehicle.

Front 1348

Cargo Tank

Back 1348

For the purposes of this standard, any tank having a liquid capacity in excess of 110 gal (415 L) used for carrying flammable and combustible liquids or asphalt and mounted permanently or otherwise upon a tank vehicle. The term cargo tank does not apply to any container used solely for the purpose of supplying fuel for the propulsion of the tank vehicle upon which it is mounted.

Front 1349

Cargo Tank Vehicle

Back 1349

A tank truck or trailer designed to transport liquid cargo.

Front 1350

Cargo Transport Container

Back 1350

A mobile unit designed to transport LNG, CNG, GH2, or LH2.

Front 1351

Carport

Back 1351

An awning or shade structure for a vehicle or vehicles that is permitted to be either freestanding or partially supported by a manufactured home.

Front 1352

Carrier

Back 1352

High-frequency energy that can be modulated by voice or signaling impulses. (SIG-SSS)

Front 1353

Carrier Gas Special
Atmosphere

Back 1353

A gas or liquid component of a special atmosphere that represents a sufficient portion of the special atmosphere gas volume in the furnace so that, if the flow of the gas or liquid component ceases, the total
flow of the special atmosphere in the furnace is not sufficient to maintain a positive pressure in the furnace.

Front 1354

Carrier System

Back 1354

A means of conveying a number of channels over a single path by modulating each channel on a different carrier frequency and demodulating at the receiving point to restore the signals to their original form. (SIG-SSS)

Front 1355

Car Terminal

Back 1355

A terminal where automobiles are the commodity handled.

Front 1356

Carton

Back 1356

A cardboard or fiberboard box that encloses a product.

Front 1357

Cartoned

Back 1357

A method of storage consisting of corrugated cardboard or paperboard containers fully enclosing the commodity.

Front 1358

Cartoned Storage

Back 1358

Storage consisting of corrugated cardboard or paperboard containers that fully enclose the commodity.

Front 1359

Cartridge/Cylinder-Operated
Fire Extinguisher

Back 1359

A fire extinguisher in which the expellant gas is in a separate container from the agent storage container.

Front 1360

CAS

Back 1360

Chemical Abstract Service.

Front 1361

Cascade Storage System

Back 1361

Storage in multiple pressure vessels, cylinders, or containers, which can be at different pressures, such that fueling is normally done initially from lower pressure containers and completed from higher pressure containers.

Front 1362

Cascade System

Back 1362

A method of piping air tanks together to allow air to be supplied to the SCBA fill station using a progressive selection of tanks each with a higher pressure level.

Front 1363

Cast Members

Back 1363

Performers involved in a production involving the use of flame effects that may or may not be employees. (Many amusement employees are also referred to as “cast members.”)

Front 1364

Catch Pool (Accessibility)

Back 1364

A pool or designated section of a pool used as a terminus for water slide flumes.

Front 1365

Categories of Rehabilitation
Work

Back 1365

The nature and extent of rehabilitation work undertaken in an existing building.

Front 1366

Category A Medical Condition

Back 1366

A medical condition that would preclude a person from performing as a member in a training or emergency operational environment by presenting a significant risk to the safety and health of the person or others.

Front 1367

Category B Medical Condition

Back 1367

A medical condition that, based on its severity or degree, could preclude a person from performing as a member in a training or emergency operational environment by presenting a significant risk to the safety and health of the person or others.

Front 1368

Category III Vented Appliance

Back 1368

An appliance that operates with a positive vent static pressure and with a vent gas temperature that avoids excessive condensate production in the vent.

Front 1369

Category II Vented Appliance

Back 1369

An appliance that operates with a nonpositive vent static pressure and with a vent gas temperature that may cause excessive condensate production in the vent.

Front 1370

Category I Vented Appliance

Back 1370

An appliance that operates with a nonpositive vent static pressure and with a vent gas temperature that avoids excessive condensate production in the vent.

Front 1371

Category IV Vented Appliance

Back 1371

An appliance that operates with a positive vent static pressure and with a vent gas temperature that may cause excessive condensate production in the vent.

Front 1372

Catenary Lightning Protection
System

Back 1372

A lightning protection system consisting of one or more overhead ground wires.

Front 1373

Cathode

Back 1373

A metal that in an electrolyte assumes a more electropositive charge than the one to which it is coupled. (See also 3.3.8, Anode.)

Front 1374

Cathodic Protection

Back 1374

A method of controlling or impressing an electrical current to prevent corrosion of metal components of airport fueling systems that are in contact with the ground.

Front 1375

Cause

Back 1375

The circumstances, conditions, or agencies that brought about or resulted in the fire or explosion incident, damage to property resulting from the fire or explosion incident, or bodily injury or loss of life resulting from the fire or explosion incident.

Front 1376

Cause Movement of Exposed

Back 1376

Initiate movement of the exposed to and along a safe path.

Front 1377

Cave

Back 1377

A natural underground void formed by geologic process.

Front 1378

Cave

Back 1378

A small hot cell intended for a specific purpose and limited equipment.

Front 1379

Cave-In

Back 1379

The separation of a mass of soil or rock material from the side of an excavation or trench, or the loss of soil from under a trench shield or support system, and its sudden movement into the excavation, either by falling or sliding, in sufficient quantity so that it could entrap, bury, or otherwise injure and immobilize a person.

Front 1380

Cave-In

Back 1380

The separation of a mass of soil or rock material from the side of an excavation or trench, or the loss of soil from under a trench shield or support system, and its sudden movement into the excavation, either by falling or sliding, in sufficient quantity so that it could entrap, bury, or otherwise injure and immobilize a person. [1670, 2004]

Front 1381

Cavity Wall

Back 1381

A wall built of masonry units or of plain concrete, or a combination of these materials arranged to provide an air space within the wall and in which the inner and outer wythes of the wall are tied together with metal ties.

Front 1382

CBRN

Back 1382

Abbreviation for Chemical, Biological, Radiological, and Nuclear.

Front 1383

CBRN

Back 1383

Acronym for Chemical, Biological, Radiological, and Nuclear. This refers specifically to a NIOSH certification on the protective capabilities of a respirator.

Front 1384

[C]BRN

Back 1384

A modification to CBRN; used in this standard to indicate the CBRN protection provided by the[C]BRN requirements does not include chemical CBRN hazards, but only applies to biological agents and radiological particulates CBRN hazards. (See also 3.3.13, CBRN Terrorism Agents.)

Front 1385

CBRN

Back 1385

An abbreviation for chemicals, biological agents, and radiological particulate hazards.

Front 1386

CBRN

Back 1386

An abbreviation for chemicals, biological agents, and radiological particulate hazards. (See also 3.3.18, CBRN Terrorism Agents.)

Front 1387

CBRN

Back 1387

An abbreviation for chemicals, biological agents, and radiological particulate hazards. (See also 3.3.9, CBRN Terrorism Agents.)

Front 1388

CBRN

Back 1388

An abbreviation for chemicals, biological agents, and radiological particulates hazards. (See also 3.3.15, CBRN Terrorism Agents.)

Front 1389

CBRN

Back 1389

An acronym for chemicals, biological agents, and radiological particulates hazards. (See also 3.3.13, CBRN Terrorism Agents.)

Front 1390

CBRN Barrier Layer

Back 1390

The component of the ensemble that provides protection against
CBRN terrorism agents.

Front 1391

CBRN Barrier Layer

Back 1391

The part of a composite that is intended to provide a barrier of protection against CBRN terrorism agents.

Front 1392

CBRN Barrier Layer

Back 1392

The part of the composite that is intended to provide protection against CBRN terrorism agents.

Front 1393

CBRN Barrier Material

Back 1393

The part of the composite that is intended to provide protection against CBRN terrorism agents.

Front 1394

CBRNE

Back 1394

Acronym for Chemical, Biological, Radiological, Nuclear, and Explosives. This term refers to the general types of terrorist attacks, or WMD events.

Front 1395

CBRN Technical Rescue
Protective Ensemble

Back 1395

Multiple elements of compliant protective clothing and protective equipment designed and configured as an ensemble to provide limited protection in operational settings where exposure to physical, thermal, liquid, and body fluid-borne pathogen hazards, and CBRN agents in vapor, liquid-splash, and particulate forms are expected.

Front 1396

CBRN Technical Rescue Protective Ensemble Elements

Back 1396

The parts that comprise the CBRN technical rescue protective ensemble, that include coats, trousers, coveralls, helmets, hoods, gloves, footwear, respirator, and interface components.

Front 1397

CBRN Technical Rescue
Protective Footwear Element

Back 1397

The element of the certified CBRN technical rescue protective ensemble element that provides protection to the foot, ankle, and leg.

Front 1398

CBRN Technical Rescue
Protective Garment Element

Back 1398

The coat, trouser, or coverall of the certified CBRN technical rescue protective ensemble that provides protection to the upper and lower torso, arms, and legs.

Front 1399

CBRN Technical Rescue
Protective Glove Element

Back 1399

The element of the certified CBRN technical rescue protective ensemble that provides protection to the hand and wrist.

Front 1400

CBRN Technical Rescue
Protective Helmet Element

Back 1400

The element of the certified CBRN technical rescue protective ensemble that provides protection to the head.

Front 1401

CBRN Technical Rescue
Protective Hood Element

Back 1401

An interface element of the certified CBRN technical rescue protective ensemble that provides protection to the coat/helmet/respirator facepiece area.

Front 1402

CBRN Terrorism Agents

Back 1402

Chemicals, biological agents, and radiological particulates that could be released as an act of terrorism. [C]BRN terrorism agents include only biological agents and radiological particulates. (See also 3.3.6, Biological Terrorism Agents and 3.3.67, Radiological Particulate Terrorism Agents.)

Front 1403

CBRN Terrorism Agents

Back 1403

Chemicals, biological agents, and radiological particulates that could be released as the result of a terrorist attack. (See also 3.3.19, Chemical Terrorism Agents; 3.3.4, Biological Terrorism Agents; and 3.3.104, Radiological Particulate Terrorism Agents.)

Front 1404

CBRN Terrorism Agents

Back 1404

Chemicals, biological agents, and radiological particulates that could be released as the result of a terrorist attack. (See also 3.3.3, Biological Terrorism Agents; 3.3.12, Chemical Terrorism Agents; 3.3.74, Radiological Particulate Terrorism Agents; and 3.3.101, Toxic Industrial Chemicals.)

Front 1405

CBRN Terrorism Agents

Back 1405

Chemicals, biological agents, radiological particulates (also known as “chemical, biological, radiological, nuclear”) that could be released as an act of terrorism. (See also 3.3.21, Chemical Terrorism Agents; 3.3.4, Biological Terrorism Agents; and 3.3.87, Radiological Particulate Terrorism Agents.)

Front 1406

CBRN Terrorism Agents

Back 1406

The term used to refer to chemical terrorism agents including both chemical warfare agents and toxic industrial chemicals, biological terrorism agents, and radiological particulate terrorism agents. (See also
3.3.1.1, Biological Terrorism Agents, 3.3.1.3, Chemical Terrorism Agents, and
3.3.1.5, Radiological Particulate Terrorism Agents.)

Front 1407

CBRN Terrorism Incident Protective Ensembles and Ensemble Elements

Back 1407

Multiple elements, categorized as Class 2, Class 3, or Class 4 CBRN protective ensembles and ensemble elements, designed to provide minimum full-body protection against exposure to chemical/biological terrorism agents occurring during chemical/biological terrorism emergencies.

Front 1408

CBRN Terrorism Incident
Protective Footwear

Back 1408

An element of the CBRN terrorism agent protective ensemble and ensemble elements designed to provide minimum protection to the foot, ankle, and lower leg.

Front 1409

CBRN Terrorism Incident
Protective Footwear Cover

Back 1409

An item of the CBRN terrorism agent protective ensemble and ensemble elements designed and configured to be worn over standard footwear to provide barrier and physical protection to the wearer’s feet.

Front 1410

CBRN Terrorism Incident
Protective Garment(s)

Back 1410

An element of the CBRN terrorism agent protective ensemble and ensemble elements designed to provide minimum protection to the upper and lower torso, head, arms, and legs; excluding the hands and feet.

Front 1411

CBRN Terrorism Incident
Protective Glove(s)

Back 1411

An element of the CBRN terrorism agent protective ensemble and ensemble elements designed to provide minimum protection to the wearer’s hands and wrists.

Front 1412

C-Class Door

Back 1412

A door constructed of noncombustible material that does not have A- or B-class fire endurance.

Front 1413

Ceiling

Back 1413

In merchant vessels, a ceiling is a horizontal division within a space for the purpose of decoration, acoustics, or fire protection.

Front 1414

Ceiling

Back 1414

The upper surface of a space, regardless of height. Areas with a suspended ceiling have two ceilings, one visible from the floor and one above the suspended ceiling. (SIG-IDS)

Front 1415

Ceiling Cavity Plenum

Back 1415

The space between the top of the finished ceiling and the underside of the floor or roof above where used to supply air to the occupied area, or to return or exhaust air from the occupied area.

Front 1416

Ceiling Height

Back 1416

The distance between the floor and the underside of the ceiling above
(or roof deck) within the area.

Front 1417

Ceiling Height

Back 1417

The height from the continuous floor of a room to the continuous ceiling of a room or space. (SIG-IDS)

Front 1418

Ceiling Jet

Back 1418

A flow of hot smoke under the ceiling, extending radially from the point of fire plume impingement on the ceiling.

Front 1419

Ceiling Jet

Back 1419

A flow of smoke under the ceiling, extending radially from the point of fire plume impingement on the ceiling.

Front 1420

Ceiling Jet

Back 1420

A relatively thin layer of flowing hot gases that develops under a horizontal surface (e.g., ceiling) as a result of plume impingement and the flowing gas being forced to move horizontally.

Front 1421

Ceiling Layer

Back 1421

A buoyant layer of hot gases and smoke produced by a fire in a compartment.

Front 1422

Ceiling Limit

Back 1422

The maximum concentration of an airborne contaminant to which a person might be exposed. The ceiling limits utilized are those published in 29 CFR 1910.1000. [5000, 2003]

Front 1423

Ceiling Limit

Back 1423

The maximum concentration of an airborne contaminant to which one can be exposed.

Front 1424

Ceiling Limit

Back 1424

The maximum concentration of an airborne contaminant to which one can be exposed. [5000, 2009]

Front 1425

Ceiling Limit

Back 1425

The maximum concentration of an airborne contaminant to which one can be exposed; the ceiling limits used are those published in 29
CFR 1910.1000.

Front 1426

Ceiling Radiation Damper

Back 1426

A device installed to limit radiant heat transfer through an air outlet or air inlet opening in the ceiling of a floor- or roof-ceiling assembly having not less than a 1-hour fire resistance rating. Such a device is described in the construction details for some tested floor- or
roof-ceiling assemblies.

Front 1427

Ceiling Radiation Damper

Back 1427

A listed device installed in a ceiling membrane of a fire
resistance-rated floor-ceiling or roof-ceiling assembly to automatically
limit the radiative heat transfer through an air inlet/outlet opening.

Front 1428

Ceiling Radiation Damper

Back 1428

A listed device installed in a ceiling membrane of a fire
resistance-rated floor-ceiling or roof-ceiling assembly to automatically
limit the radiative heat transfer through an air inlet/outlet opening.
[5000, 2006]

Front 1429

Cell

Back 1429

An assembly of electrodes and electrolyte that constitutes the basic unit of the battery.

Front 1430

Cell

Back 1430

A single, enclosed tubular space in a floor made of precast cellular concrete slabs, the direction of the cell being parallel to the direction of the floor member.

Front 1431

Cell

Back 1431

The smallest tower subdivision that can function as an independent unit with regard to air and water flow.

Front 1432

Cell Line

Back 1432

An assembly of electrically interconnected electrolytic cells supplied by a source of direct-current power.

Front 1433

Cell Line Attachments and
Auxiliary Equipment

Back 1433

As applied to this article, a term that includes, but is not limited to, auxiliary tanks; process piping; ductwork; structural supports; exposed cell line conductors; conduits and other raceways; pumps, positioning equipment, and cell cutout or bypass electrical devices. Auxiliary equipment includes tools, welding machines, crucibles, and other portable equipment used for operation and maintenance within the electrolytic cell line working zone.

Front 1434

Cellular Metal Floor Raceway

Back 1434

The hollow spaces of cellular metal floors, together with suitable fittings, that may be approved as enclosures for electrical conductors.

Front 1435

Cellular or Foamed Plastic

Back 1435

A heterogeneous system comprised of not less than two phases, one of which is a continuous, polymeric, organic material, and the second of which is deliberately introduced for the purpose of distributing gas in voids throughout the material.

Front 1436

Cellulose Nitrate Film

Back 1436

Motion picture sound recording, still, or flat film that is coated on a support or base consisting essentially of cellulose nitrate.

Front 1437

Census Data

Back 1437

Demographic population data available by statistical areas from a governmental agency.

Front 1438

Center

Back 1438

The midpoint between the right and left sides of a recreational vehicle.

Front 1439

Center Latch

Back 1439

A latch used to hold the two halves of a center-parting or biparting
fire door together, which is usually two pieces surface-applied to doors
and interlocked in the closed position.

Front 1440

Centerline

Back 1440

A line that runs from the bow to the stern of the vessel and is equidistant from the port and starboard sides of the vessel.

Front 1441

Center of Gravity

Back 1441

The point at which the entire weight of the fire apparatus is considered to be concentrated so that, if supported at this point, the apparatus would remain in equilibrium in any position.

Front 1442

Center of Gravity

Back 1442

The point at which the entire weight of the fire apparatus is considered to be concentrated so that, if supported at this point, the apparatus would remain in equilibrium in any position.
[1901, 2003]

Front 1443

Center of Gravity

Back 1443

The point within a vehicle at which all of its weight can be considered to be concentrated.

Front 1444

Center Pivot Irrigation
Machine

Back 1444

A multimotored irrigation machine that revolves around a central pivot and employs alignment switches or similar devices to control individual motors.

Front 1445

Central Control Station

Back 1445

A control station in which fire and safety control and indicator functions are centralized.

Front 1446

Central Furnace

Back 1446

A self-contained appliance for heating air by transfer of heat of combustion through metal to the air and designed to supply heated air through ducts to spaces remote from or adjacent to the appliance location.

Front 1447

Central Grounding Point

Back 1447

The location where the interconnected parts of the grounding system are connected in a common enclosure. The central grounding point provides a common connection point for termination of the feeder or branch-circuit equipment-grounding conductors.

Front 1448

Central Heating Appliance

Back 1448

A stationary heating appliance comprising the following: boilers, central furnaces, floor furnaces, and wall furnaces.

Front 1449

Centralized Oil Distribution
System

Back 1449

A system of piping through which oil is supplied from a remote central supply tank or tanks to one or more buildings, mobile homes, recreational vehicles, or other structures.

Front 1450

Central Office (CO)

Back 1450

A telecommunications facility also known as a telephone exchange or switching center.

Front 1451

Central Premix System

Back 1451

A system that distributes flammable gas-air mixtures to two or more remote stations.

Front 1452

Central Safety Station

Back 1452

A continuously manned control station from which all of the fire control equipment is monitored. If this station is not the bridge, direct communication with the bridge shall be provided by means other than the ship’s service telephone.

Front 1453

Central Station

Back 1453

A monitoring station that is listed.

Front 1454

Central Station

Back 1454

See 3.3.194, Supervising Station.

Front 1455

Central Station Service

Back 1455

The use of a system or a group of systems including the protected premises fire alarm system(s) in which the operations of circuits and devices are signaled to, recorded in, and supervised from a listed central station that has competent and experienced operators who, upon receipt of a signal, take such action as required by this Code. Related activities at the protected premises, such as equipment installation, inspection, testing, maintenance, and runner service, are the responsibility of the central station or a listed fire alarm service local company. Central station service is controlled and operated by a person, firm, or corporation whose business is the furnishing of such contracted services or whose properties are the protected premises. (SIG-SSS)

Front 1456

Central Station Service

Back 1456

See 3.3.195, Supervising Station Service.

Front 1457

Central Station Service Fire
Alarm System

Back 1457

A system or group of systems in which the operations of circuits and devices are transmitted automatically to, recorded in, maintained by, and supervised from a listed central station that has competent and experienced servers and operators who, upon receipt of a signal, take such action as required by NFPA 72. Such service is to be controlled and operated by a person, firm, or corporation whose business is the furnishing, maintaining, or monitoring of supervised fire alarm systems. [72, 2007]

Front 1458

Central Station Service Fire
Alarm System

Back 1458

A system or group of systems in which the operations of circuits and devices are transmitted automatically to, recorded in, maintained by, and supervised from a listed central station that has competent and experienced servers and operators who, upon receipt of a signal, take such action as required by this Code. Such service is to be controlled and operated by a person, firm, or corporation whose business is the furnishing, maintaining, or monitoring of supervised fire alarm systems. (SIG-SSS)

Front 1459

Central Supervising Station

Back 1459

A supervising station that is listed for central station service and that also commonly provides less stringent supervising station services such as remote supervising services. (SIG-SSS)

Front 1460

Central Warm-Air, Forced-Air, Attic-Type Furnace

Back 1460

A forced-air-type furnace designed specifically for installation in an attic or in a space with low headroom that is normally occupied.

Front 1461

Central Warm-Air, Forced-Air, Downflow-Type Furnace

Back 1461

A forced-air-type furnace designed with airflow essentially in a vertical path, discharging air at or near the bottom of the furnace.

Front 1462

Central Warm-Air, Forced-Air, Horizontal-Type Furnace

Back 1462

A forced-air-type furnace designed with airflow through the furnace essentially in a horizontal path.

Front 1463

Central Warm-Air,
Forced-Air-Type Furnace

Back 1463

A central furnace equipped with a blower that provides the primary means for the circulation of air.

Front 1464

Central Warm-Air, Forced-Air, Upflow-Type Furnace

Back 1464

A forced-air-type furnace designed with airflow essentially in a vertical path, discharging air at or near the top of the furnace.

Front 1465

Central Warm-Air Furnace

Back 1465

A self-contained indirect-fired or electrically heated appliance designed to supply heated air through ducts to spaces remote from or adjacent to the appliance location.

Front 1466

Central Warm-Air Furnace

Back 1466

A self-contained indirect-fired or electrically heated appliance designed to supply heated air through ducts to spaces remote from or adjacent to the appliance location. [211, 2006]

Front 1467

Central Warm-Air, Gravity-Type Furnace

Back 1467

A central furnace depending primarily on circulation of air by gravity.

Front 1468

Central Warm-Air,
Gravity-Type Furnace with
Booster Fan

Back 1468

A central furnace equipped with a booster fan that does not materially restrict free circulation of air by gravity flow when such a fan is not in operation.

Front 1469

Central Warm-Air,
Gravity-Type Furnace with
Integral Fan

Back 1469

A central furnace equipped with a fan as an integral part of its construction and operable on gravity systems only. The fan is used only to overcome the internal resistance to airflow.

Front 1470

Central Warm Air Heating
System

Back 1470

A heating system consisting of a heat exchanger with an outer casing or jacket, a solar collection system, or an electric heating unit that is connected to a supply system and a return system.

Front 1471

Centrifugal Pump

Back 1471

A pump in which the pressure is developed principally by the action of centrifugal force.

Front 1472

Centrifuge

Back 1472

A mechanical device in which centrifugal force is used to separate solids from liquids or to separate liquids of different densities.

Front 1473

Certificate of Fitness

Back 1473

A written document issued by the authority having jurisdiction to any person for the purpose of granting permission to such person to conduct or engage in any operation or act for which certification is required.

Front 1474

Certification

Back 1474

An authoritative attestment; specifically, the issuance of a document that states that an individual has demonstrated the knowledge and skills necessary to function in a particular fire service professional field.

Front 1475

Certification

Back 1475

An authoritative attestment; specifically, the issuance of a document that states that an individual has demonstrated the knowledge and skills necessary to function in a particular fire service professional field. [1000, 2006]

Front 1476

Certification/Certified

Back 1476

A system whereby a certification organization determines that a manufacturer has demonstrated the ability to produce a product that complies with the requirements of a specific standard(s), authorizes the manufacturer to use a label on listed products that comply with the requirements of that standard(s), and establishes a follow-up program conducted by the certification organization as a check on the methods the manufacturer uses to determine continued compliance of labeled and listed products with the requirements of that standard(s).

Front 1477

Certification/Certified

Back 1477

A system whereby a certification organization determines that a manufacturer has demonstrated the ability to produce a product that complies with the requirements of this standard, authorizes the manufacturer to use a label on listed products that comply with the requirements of this standard, and establishes a follow-up program conducted by the certification organization as a check of the methods the manufacturer uses to determine continued compliance of labeled and listed products with the requirements of this standard.

Front 1478

Certification/Certified

Back 1478

A system whereby a certification organization determines that a manufacturer has demonstrated the ability to produce a product that complies with the requirements of this standard, authorizes the manufacturer to use a label on listed products that comply with the requirements of this standard, and establishes a follow-up program conducted by the certification organization as a check on the manufacturer to determine compliance with the requirements of this standard.

Front 1479

Certification/Certified

Back 1479

A system whereby a certification organization determines that a manufacturer has demonstrated the ability to produce a product that complies with the requirements of this standard, authorizes the manufacturer to use a label on listed products that comply with the requirements of this standard, and establishes a follow-up program conducted by the certification organization as a check on the methods the manufacturer uses to determine compliance with the
requirements of this standard.

Front 1480

Certification/Certified

Back 1480

A system whereby a certification organization determines that a manufacturer has demonstrated the ability to produce a product that complies with the requirements of this standard, authorizes the manufacturer to use a label on listed products that comply with the requirements of this standard, and establishes a follow-up program conducted by the certification organization as a check on the methods the manufacturer uses to determine continued compliance of labeled and listed products with the requirements of this standard.

Front 1481

Certification/Certified

Back 1481

A system whereby a certification organization determines that a manufacturer has demonstrated the ability to produce a product that complies with the requirements of this standard, authorizes the manufacturer to use a label on listed products that comply with the requirements of this standard, and establishes a follow-up program conducted by the certification organization as a check on the methods the manufacturer uses to determine continued compliance of labeled and listed products with the requirements of this standard. (See also
3.3.28, NIOSH Certified.)

Front 1482

Certification/Certified

Back 1482

A system whereby a certification organization determines that a manufacturer has demonstrated the ability to produce a product that complies with the requirements of this standard, authorizes the manufacturer to use a label on listed products that comply with the requirements of this standard, and establishes a follow-up program conducted by the certification organization as a check on the methods the manufacturer uses to determine continued compliance with the requirements of this standard.

Front 1483

Certification/Certified

Back 1483

A system whereby a certification organization determines that a manufacturer has demonstrated the ability to produce a product that complies with the requirements of this standard, authorizes the manufacturer to use a label on listed products that comply with the requirements of this standard, and establishes a follow-up program conducted by the certification organization as a check on the methods the manufacturer uses to determine continued compliance with the requirements of this standard. [1971, 2007]

Front 1484

Certification Mark or Label

Back 1484

The authorized identification symbol or logo of the certification organization.

Front 1485

Certification of Personnel

Back 1485

A formal program of related instruction and testing as provided by a recognized organization or the authority having jurisdiction.
(SIG-FUN)

Front 1486

Certification Organization

Back 1486

An independent, third-party organization established for product testing and evaluation that administers a labeling/listing/follow-up program.

Front 1487

Certification Organization

Back 1487

An independent, third-party organization that determines product compliance with the requirements of this standard using a labeling/listing/follow-up program.

Front 1488

Certification Organization

Back 1488

An independent, third-party organization that determines product compliance with the requirements of this standard with a labeling/listing/follow-up program.

Front 1489

Certification Organization

Back 1489

An independent, third-party organization that determines product compliance with the requirements of this standard with a labeling/listing/follow-up program. [1971, 2007]

Front 1490

Certified

Back 1490

A formally stated recognition and approval of an acceptable level of competency, acceptable to the AHJ.

Front 1491

Certified

Back 1491

Approved or endorsed authoritatively.

Front 1492

Certified Motor

Back 1492

A commercially made rocket motor that has been tested by a recognized testing organization that is acceptable to the authority having jurisdiction and found to meet the requirements set forth in this code.

Front 1493

Certified Motor

Back 1493

A commercially manufactured rocket motor that has been certified by a recognized testing organization acceptable to the authority having jurisdiction to meet the certification requirements set forth in
NFPA 1125, Code for the Manufacture of Model Rocket and High Power
Rocket Motors.

Front 1494

Certified Person

Back 1494

A person that has been certified by a recognized organization through a formal certification program or by an equipment manufacturer that has a certification program, that is acceptable to the authority having jurisdiction.

Front 1495

Certified User

Back 1495

An individual, a distributor, or a seller who has been tested or otherwise examined by a recognized organization that is acceptable to the authority having jurisdiction and found to be qualified to purchase, possess, or use high power rocket motors.

Front 1496

Certified User

Back 1496

An individual, a distributor, or a seller who has been tested or otherwise examined by a recognized organization that is acceptable to the authority having jurisdiction and has been found to be qualified
to purchase, possess, and use high power rocket motors.

Front 1497

Certifying Entity

Back 1497

An organization that is accredited to award certification to individuals.

Front 1498

CFR

Back 1498

The Code of Federal Regulations of the United States Government.

Front 1499

CFR

Back 1499

The Code of Federal Regulations of the United States Government. [1, 2003]

Front 1500

CGA

Back 1500

Compressed Gas Association.

Front 1501

CGA

Back 1501

The Compressed Gas Association.

Front 1502

Chafing Strip

Back 1502

A metal strip applied to the back surface of a sliding door to protect the door surface from damage from the wall.

Front 1503

Chain Fusing

Back 1503

A series of two or more aerial shells fused to fire in sequence from a single ignition.

Front 1504

Chain Grate Stoker

Back 1504

A stoker that has a moving endless chain as a grate surface, onto which coal is fed directly from a hopper.

Front 1505

Chain of Survival

Back 1505

A metaphor to communicate the interdependence of a community’s emergency response to cardiac arrest.

Front 1506

Chamber Atmosphere

Back 1506

The environment inside a chamber. [99, 2005 (HYP)]

Front 1507

Chamber Atmosphere

Back 1507

The environment inside a chamber. (HYP)

Front 1508

Change Key

Back 1508

A key that will operate only one lock or group of keyed-alike locks, as distinguished from a master key.

Front 1509

Change of Occupancy
Classification

Back 1509

A change of use involving a change in the occupancy classification of a structure or portion of a structure.

Front 1510

Change of Occupancy
Classification

Back 1510

The change in the occupancy classification of a structure or portion of a structure.

Front 1511

Change of Use

Back 1511

A change in the purpose or level of activity within a structure that involves a change in application of the requirements of the building code.

Front 1512

Change of Use

Back 1512

A change in the purpose or level of activity within a structure that involves a change in application of the requirements of the Code.

Front 1513

Channel

Back 1513

A path for voice or signal transmission that uses modulation of light or alternating current within a frequency band. (SIG-SSS)

Front 1514

Channel Access Time

Back 1514

The time lapse from activation of a radio transmitter’s push-to-talk
(PTT) switch to the receiving unit’s speaker emitting audio.

Front 1515

Channel Frame

Back 1515

A frame that consists of head and jamb members of structural steel channels, either shop assembled or field assembled, to be used with masonry walls.

Front 1516

Char

Back 1516

Carbonaceous material formed by pyrolysis or incomplete combustion.

Front 1517

Char

Back 1517

Carbonaceous material that has been burned or pyrolyzed and has a blackened appearance.

Front 1518

Char

Back 1518

Material that has been partially burned on the exterior of the object and has a blackened, carbonized appearance.

Front 1519

Char

Back 1519

The formation of a brittle residue when material is exposed to thermal energy.

Front 1520

Char

Back 1520

The formation of a brittle residue where the material is exposed to thermal energy.

Front 1521

Char

Back 1521

The unburned combustibles in solid form combined with a portion of the fuel ash and sorbent.

Front 1522

Character-Defining Feature

Back 1522

A prominent or distinctive aspect, quality, or characteristic of a cultural property that contributes significantly to its physical character.

Front 1523

Character-Defining Feature

Back 1523

A prominent or distinctive aspect, quality, or characteristic of a cultural resource property that contributes significantly to its physical character.

Front 1524

Char Blisters

Back 1524

Convex segments of carbonized material separated by cracks or crevasses that form on the surface of char, forming on materials such as wood as the result of pyrolysis or burning.

Front 1525

Charge Controller

Back 1525

Equipment that controls dc voltage or dc current, or both, used to charge a battery.

Front 1526

Charging

Back 1526

An operation during which a battery receives electric energy that is converted to chemical energy from an external circuit. The quantity
of electric energy then is known as the charge and is usually measured in ampere-hour.

Front 1527

Charging Valve

Back 1527

In a gaseous or liquid fuel system, a small valve bypassing the main safety shutoff valve used for purging and charging the fuel headers and piping and for testing for leaks.

Front 1528

Chassis

Back 1528

Special trailer or wheeled undercarriage on which containers or roll-on/roll-off (RO/RO) cargoes are moved.

Front 1529

Chassis

Back 1529

The basic operating motor vehicle including the engine, frame, and other essential structural and mechanical parts, but exclusive of the body and all appurtenances for the accommodation of driver, property, passengers, appliances, or equipment related to other than control. Common usage might, but need not, include a cab (or cowl).

Front 1530

Chassis

Back 1530

The basic operating motor vehicle including the engine, frame, and other essential structural and mechanical parts, but exclusive of the body and all appurtenances for the accommodation of driver, property, passengers, appliances, or equipment related to other than control. Common usage might, but need not, include a cab (or cowl). [1901, 2003]

Front 1531

Check-In

Back 1531

The process whereby resources first report to an incident.

Front 1532

Check Valve

Back 1532

A valve that allows flow in one direction only.

Front 1533

Check Valve

Back 1533

A valve that allows flow in one direction only. [13D, 2007]

Front 1534

Check Valve

Back 1534

A valve that allows flow in one direction only. [24, 2007]

Front 1535

Check Wood Irregularity

Back 1535

A separation of the wood along the fiber direction that usually
extends across the rings of annual growth and commonly results from
stresses set up in the wood during seasoning.

Front 1536

Chemical

Back 1536

Any compound, mixture, or solution in the form of a solid, liquid, or gas that may be hazardous by virtue of its properties other than or in addition to flammability or by virtue of the properties of compounds that might be evolved from hot work or cold work.

Front 1537

Chemical

Back 1537

A substance with one or more of the following hazard ratings as defined in NFPA 704, Standard System for the Identification of the Hazards of Materials for Emergency Response: Health — 2, 3, or 4; Flammability — 2, 3, or 4; Instability — 2, 3, or 4. (See also Section B.2.)

Front 1538

Chemical and Biological
Terrorism Incidents

Back 1538

Situations involving the release of chemical or biological warfare agents in civilian areas by terrorists.

Front 1539

Chemical Flash Fire

Back 1539

The ignition of a flammable and ignitable vapor or gas that produces an outward expanding flame front as those vapors or gases burn. This burning and expanding flame front, a fireball, will release both thermal and kinetic energy to the environment.

Front 1540

Chemical Flash Fire

Back 1540

The ignition of a flammable and ignitible vapor or gas that produces an outward expanding flame front as those vapors or gases burn. This burning and expanding flame front, a fireball, will release both thermal and kinetic energy to the environment.

Front 1541

Chemical Flash Fire

Back 1541

The ignition of a flammable and ignitible vapor or gas that produces an outward expanding flame front as those vapors or gases burn. This burning and expanding flame front, a fireball, will release both thermal and kinetic energy to the environment. [1991, 2005]

Front 1542

Chemical Fume Hood

Back 1542

A ventilated enclosure designed to contain and exhaust fumes, gases, vapors, mists, and particulate matter generated within the hood interior.

Front 1543

Chemical Heat of Combustion
(Hc)

Back 1543

The amount of heat released, in kJ/g (Btu/lb), when a substance is oxidized to yield stable end products, including water as a vapor, as measured under actual fire conditions in a normal ambient (air) atmosphere.

Front 1544

Chemical Heat of Combustion
(Hc)

Back 1544

The amount of heat released, in Btu/lb (kJ/g), when a substance is oxidized to yield stable end products, including water as a vapor, as measured under actual fire conditions in a normal ambient (air) atmosphere. [30B, 2007]

Front 1545

Chemical Isolation

Back 1545

A means of preventing flame front and ignition from being conveyed past a predetermined point by injection of a chemical suppressant.

Front 1546

Chemical Name

Back 1546

The scientific designation of a chemical in accordance with the nomenclature system developed by the International Union of Pure and Applied Chemistry or the Chemical Abstracts Service rules of nomenclature, or a name that clearly identifies a chemical for the purpose of conducting an evaluation.

Front 1547

Chemical Plant

Back 1547

A large integrated plant or that portion of such a plant, other than a refinery or distillery, where liquids are produced by chemical reactions or used in chemical reactions.

Front 1548

Chemical Plant

Back 1548

A large integrated plant or that portion of such a plant, other than a refinery or distillery, where liquids are produced by chemical reactions or used in chemical reactions. [30, 2008]

Front 1549

Chemical-Protection Layer

Back 1549

The material or composite used in an ensemble or clothing for the purpose of providing protection from chemical hazards.

Front 1550

Chemical-Protective Clothing

Back 1550

Items made from chemical-resistive materials, such as clothing, hood, boots, and gloves, that are designed and configured to protect the wearer’s torso, head, arms, legs, hands, and feet from hazardous materials.

Front 1551

Chemical-Protective Layer

Back 1551

The material or composite used in an ensemble or clothing for the purpose of providing protection from chemical hazards.

Front 1552

Chemical-Protective Material

Back 1552

Any material or composite used in liquid splash-protective ensemble or clothing for the purpose of providing protection from chemical hazards; can be a part of the “primary suit material.”

Front 1553

Chemical Terrorism Agents

Back 1553

Liquid, solid, gaseous, and vapor chemical warfare agents and toxic industrial chemicals used to inflict lethal or incapacitating casualties, generally on a civilian population as a result of a terrorist attack.

Front 1554

Chemical Terrorism Agents

Back 1554

Liquid, solid, gaseous, and vapor chemical warfare agents and toxic industrial chemicals used to inflict lethal or incapacitating casualties, generally on a civilian population as a result of a terrorist attack. [1994, 2007]

Front 1555

Chemical Terrorism Agents

Back 1555

Liquid, solid, gaseous, and vapor chemical warfare agents and toxic industrial chemicals used to inflict lethal or incapacitating casualties, generally on a civilian population, as a result of a terrorist attack. (See also 3.3.20, Chemical Warfare (CW) Agents, and 3.3.136, Toxic Industrial Chemicals.)

Front 1556

Chemical Warfare Agent

Back 1556

A chemical substance intended to kill, seriously injure, or incapacitate humans through physiological effects.

Front 1557

Chemical Warfare (CW) Agents

Back 1557

Liquid, solid, and gas chemical agents (most are liquids) traditionally used during warfare or armed conflict to kill or incapacitate an enemy. (See also 3.3.1.3, Chemical Terrorism Agents, and 3.3.66, Toxic Industrial Chemicals.)

Front 1558

Chemical Warfare (CW) Agents

Back 1558

Liquid, solid, and gaseous chemical agents (most are liquids) traditionally used during warfare or armed conflict to kill or incapacitate an enemy.

Front 1559

CHEMTREC

Back 1559

The Chemical Transportation Emergency Response Center, a public service of the American Chemistry Council, which provides
emergency response information and assistance on a 24-hour basis for responders to hazardous materials/weapons of mass destruction (WMD) incidents.

Front 1560

Chest Circumference

Back 1560

Measurement of upper torso garment from folded edge to folded edge, at base of armholes, and multiplied by 2 to obtain circumference.

Front 1561

Chief

Back 1561

Incident Command System title for individuals responsible for command of the functional sections: operations, planning, logistics, and finance/administration.

Front 1562

Chief Mate

Back 1562

The deck officer immediately responsible to the vessel’s master.

Front 1563

Children’s Use (Accessibility)

Back 1563

Spaces and elements specifically designed for use primarily by people
12 years old and younger.

Front 1564

Chime Ring

Back 1564

The two raised rings circling the outer shell of DOT 5P (1A1) ethylene oxide drums. These rings protect the drum but are not intended for lifting purposes.

Front 1565

Chimney

Back 1565

A construction containing one or more flues that does not meet the criteria defined for heavy-duty stack.

Front 1566

Chimney

Back 1566

A structure containing one or more vertical or nearly vertical passageways for conveying flue gases to the outside atmosphere. [211,
2006]

Front 1567

Chimney

Back 1567

A structure containing one or more vertical or nearly vertical passageways for conveying flue gases to the outside atmosphere. [See also 3.3.159.1, Gas Vent; 3.3.159, Vent; and 3.3.147.2, Venting System (Flue Gases).]

Front 1568

Chimney

Back 1568

One or more passageways, vertical or nearly so, for conveying flue or vent gases to the outdoors. (See also 3.3.107.2, Gas Vent; 3.3.107, Vent; and 3.3.100.7, Venting System.)

Front 1569

Chimney Cap

Back 1569

A protective covering or housing for the top of a chimney intended to prevent the entry of rain, snow, animals, and birds, and to prevent downdrafts.

Front 1570

Chimney Connector

Back 1570

The pipe that connects a fuel-burning appliance to a chimney.

Front 1571

Chimney Connector

Back 1571

The pipe that connects a fuel-burning appliance to a chimney. [211,
2006]

Front 1572

Chimney Connector-Type
Heat Reclaimer

Back 1572

A heat exchanger intended to be installed in a chimney connector between a heating appliance and the chimney to transfer heat from the flue gases through metal to air or water.

Front 1573

Chimney Flue

Back 1573

The passage in a chimney for conveying the flue gases to the outside atmosphere.

Front 1574

Chimney Flue

Back 1574

The passage in a chimney for conveying the flue gases to the outside atmosphere. [211, 2006]

Front 1575

Chimney Flue

Back 1575

The passage(s) in a chimney for conveying the flue or vent gases to the outdoors.

Front 1576

Chimney Flue Base (Base of
Flue)

Back 1576

The lowest point of a flue within a chimney.

Front 1577

Chin Strap

Back 1577

An adjustable strap for the helmet that fits under the chin to help secure the helmet to the head.

Front 1578

Chin Strap

Back 1578

An adjustable strap for the helmet that fits under the chin to secure the helmet to the head.

Front 1579

Chip

Back 1579

A wood chip of various species used in the manufacture of pulp.

Front 1580

Chips

Back 1580

Particles produced from a cutting or machining operation that are not oxidized and that are not diluted by noncombustible materials.

Front 1581

Chocks

Back 1581

Usually found on the rail or deck of a vessel, fittings having jaws that serve as fair leads for anchor rode and other lines.

Front 1582

Chopper Gun

Back 1582

A device that feeds glass fiber roving through a cutting unit and
injects the cut glass fibers into a stream of catalyzed liquid resin that is
then sprayed onto a surface.

Front 1583

Chute-Fed Incinerator
(Class IIA)

Back 1583

An incinerator designed specifically to be fed refuse from one or more floors above the incinerator directly into the incinerator by a separate chute constructed with a positive means to avoid penetration by smoke or fumes and connected directly over the primary combustion chamber. The incinerator is built with a primary and secondary combustion chamber and a settling chamber. It can
include a flue gas washer or scrubber. A separate chimney serves to convey the combustion gases to the outdoors. This class of incinerator is suitable for Type 1 and Type 2 wastes. It generally is used in residential and institutional buildings, including apartments, clubs, dormitories, churches, schools, and other occupancies where Type 1 and Type 2 wastes are to be incinerated.

Front 1584

Cinder Return

Back 1584

In a stoker-fired boiler, an apparatus for the return of collected cinders to the furnace, either directly or with the fuel.

Front 1585

Circuit

Back 1585

The conductor or radio channel and associated equipment that are used to perform a specific function in connection with an alarm system.

Front 1586

Circuit Breaker

Back 1586

A device designed to open and close a circuit by nonautomatic means and to open the circuit automatically on a predetermined overcurrent without damage to itself when properly applied within its rating.

Front 1587

Circuit Breaker

Back 1587

A device designed to open and close a circuit by nonautomatic means and to open the circuit automatically on a predetermined overcurrent without damage to itself when properly applied within its rating. [70:100]

Front 1588

Circuit Breaker

Back 1588

A device designed to open and close a circuit by nonautomatic means and to open the circuit automatically on a predetermined overcurrent without damage to itself when properly applied within its rating. [70,
2008]

Front 1589

Circuit Integrity (CI) Cable

Back 1589

Cable(s) used for remote-control, signaling, or power-limited systems that supply critical circuits to ensure survivability for continued circuit operation for a specified time under fire conditions.

Front 1590

Circuit Interface

Back 1590

A circuit component that interfaces initiating devices or control circuits, or both; notification appliances or circuits, or both; system control outputs; and other signaling line circuits to a signaling line circuit.
(SIG-PRO)

Front 1591

Circulating Air

Back 1591

Air for cooling, heating, or ventilation distributed to habitable spaces.

Front 1592

Circulating Closed-Loop
Sprinkler System

Back 1592

A wet pipe sprinkler system having non-fire protection connections to automatic sprinkler systems in a closed-loop piping arrangement for the purpose of utilizing sprinkler piping to conduct water for heating or cooling, where water is not removed or used from the system but only circulated through the piping system.

Front 1593

Circulating Fluidized Bed (CFB)

Back 1593

A fluidized bed in which the fluidizing velocities exceed the terminal velocity of individual bed particles.

Front 1594

Circulating Room Heater

Back 1594

A room heater with an outer jacket surrounding the heat exchanger, arranged with openings at top and bottom so that air circulates between the heat exchanger and the outer jacket.
[211, 2006]

Front 1595

Circulating Room Heater

Back 1595

A room heater with an outer jacket surrounding the heat exchanger, arranged with openings at top and bottom so that air circulates between the heat exchanger and the outer jacket. Room heaters that have openings in an outer jacket to allow some direct radiation from the heat exchanger are classified as a radiant type.

Front 1596

Circulation Path (Accessibility)

Back 1596

An exterior or interior way of passage from one place to another for pedestrians including, but not limited to, walks, hallways, courtyards, stairways, and stair landings.

Front 1597

Circulation Relief Valve

Back 1597

A valve used to cool a pump by discharging a small quantity of water, this valve is separate from and independent of the main relief valve.

Front 1598

Claims Analyst

Back 1598

An internal or external person (depending on risk financing processes being used) expected to investigate the claim, evaluate it, prepare a position, ensure the appropriate “network” is involved, and, if necessary, begin negotiation of a settlement.

Front 1599

Claims Made

Back 1599

The loss/occurrence and claim are made during the policy period.

Front 1600

Claims Occurrence

Back 1600

The loss occurs during the policy period, the claim can be made at any time.

Front 1601

Class 1

Back 1601

An oxidizer that does not moderately increase the burning rate of combustible materials with which it comes into contact.

Front 1602

Class 1 Circuit

Back 1602

The portion of the wiring system between the load side of the overcurrent device or power-limited supply and the connected equipment.

Front 1603

Class 1 Igniter

Back 1603

An igniter that is applied to ignite the fuel input through the burner and to support ignition under any burner light-off or operating conditions. Its location and capacity are such that it will provide sufficient ignition energy, generally in excess of 10 percent of full load burner input, at its associated burner to raise any credible
combination of burner inputs of both fuel and air above the minimum ignition temperature.

Front 1604

Class 1 Oxidizer

Back 1604

An oxidizer that does not moderately increase the burning rate of combustible materials with which it comes into contact.

Front 1605

Class 2

Back 1605

An oxidizer that causes a moderate increase in the burning rate of combustible materials with which it comes into contact.

Front 1606

Class 2 CBRN Protective Ensemble and Ensemble Elements

Back 1606

A CBRN protective ensemble and ensemble elements designed to protect emergency first responder personnel at terrorism incidents involving vapor or liquid chemical hazards where the concentrations are at or above Immediately Dangerous to Life and Health (IDLH) requiring the use of self-contained breathing apparatus (SCBA).

Front 1607

Class 2 Circuit

Back 1607

The portion of the wiring system between the load side of a Class 2 power source and the connected equipment. Due to its power limitations, a Class 2 circuit considers safety from a fire initiation standpoint and provides acceptable protection from electric shock.

Front 1608

Class 2 Igniter

Back 1608

An igniter that is applied to ignite the fuel input through the burner under prescribed light-off conditions. It is also used to support ignition under low load or certain adverse operating conditions. The range of capacity of such igniters is generally 4 percent to 10 percent of full load burner fuel input.

Front 1609

Class 2 Liquid Leakage

Back 1609

Leakage of liquid great enough to form drops, but not enough to cause drops to fall from the item being inspected.

Front 1610

Class 2 Oxidizer

Back 1610

An oxidizer that causes a moderate increase in the burning rate of combustible materials with which it comes into contact.

Front 1611

Class 2 Unstable Reactive Gas

Back 1611

Materials that readily undergo violent chemical change at elevated temperatures and pressures.

Front 1612

Class 3

Back 1612

An oxidizer that causes a severe increase in the burning rate of combustible materials with which it comes into contact.

Front 1613

Class 3 CBRN Protective Ensemble and Ensemble Elements

Back 1613

A CBRN protective ensemble and ensemble element designed to protect emergency first responder personnel at terrorism incidents involving low levels of vapor or liquid chemical hazards where the concentrations are below Immediately Dangerous to Life and Health (IDLH) permitting the use of CBRN air-purifying respirators (APR), or CBRN powered air-purifying respirators (PAPR).

Front 1614

Class 3 Circuit

Back 1614

The portion of the wiring system between the load side of a Class 3 power source and the connected equipment. Due to its power limitations, a Class 3 circuit considers safety from a fire initiation standpoint. Since higher levels of voltage and current than for Class 2 are permitted, additional safeguards are specified to provide protection from an electric shock hazard that could be encountered.

Front 1615

Class 3 Igniter

Back 1615

A small igniter applied particularly to fuel gas and fuel oil burners to ignite the fuel input to the burner under prescribed light-off conditions. The capacity of such igniters generally does not exceed
4 percent of the full load burner fuel input.

Front 1616

Class 3 Liquid Leakage

Back 1616

Leakage of liquid great enough to cause drops to fall from the item being inspected.

Front 1617

Class 3 Oxidizer

Back 1617

An oxidizer that causes a severe increase in the burning rate of combustible materials with which it comes into contact.

Front 1618

Class 3 Special Igniter

Back 1618

A special Class 3 high energy electrical igniter capable of directly igniting the main burner fuel.

Front 1619

Class 3 Unstable Reactive Gas

Back 1619

Materials that in themselves are capable of detonation or explosive decomposition or explosive reaction, but that require a strong initiating source or that must be heated under confinement before initiation.

Front 1620

Class 4

Back 1620

An oxidizer that can undergo an explosive reaction due to contamination or exposure to thermal or physical shock and that causes a severe increase in the burning rate of combustible materials with which it comes into contact.

Front 1621

Class 4 CBRN Protective Ensemble and Ensemble Elements

Back 1621

A CBRN protective ensemble and ensemble elements designed to protect emergency first responder personnel at terrorism incidents involving biological hazards or radiological particulate hazards where the concentrations are below Immediately Dangerous to Life and Health (IDLH) permitting the use of air-purifying respirators (APR), or powered air-purifying respirators (PAPR).

Front 1622

Class 4 Oxidizer

Back 1622

An oxidizer that can undergo an explosive reaction due to contamination or exposure to thermal or physical shock and that causes a severe increase in the burning rate of combustible materials with which it comes into contact.

Front 1623

Class 4 Unstable Reactive Gas

Back 1623

Materials that in themselves are readily capable of detonation or explosive decomposition or explosive reaction at normal temperatures and pressures.

Front 1624

Class A

Back 1624

Fire in ordinary combustible materials, such as wood, cloth, paper, rubber, and many plastics.

Front 1625

Class A

Back 1625

Ordinary combustibles.

Front 1626

Class A Fire

Back 1626

A fire in ordinary combustible materials, such as wood, cloth, paper, rubber, and many plastics.

Front 1627

Class A Fire

Back 1627

A fire in ordinary combustible materials, such as wood, cloth, paper, rubber, and many plastics. [10, 2002]

Front 1628

Class A Fire

Back 1628

A fire in ordinary combustible materials, such as wood, cloth, paper, rubber, and many plastics. [10, 2007]

Front 1629

Class A Fire-Retardant Coating

Back 1629

A coating that reduces the flame spread to 25 or less, and that has a smoke developed rating not exceeding 200 where applied to the applicable substrate, building material, or species of wood when tested in accordance with NFPA 255, ASTM E 84, or UL 723.

Front 1630

Class A Fires

Back 1630

Class A fires are fires in ordinary combustible materials, such as wood, cloth, paper, rubber, and many plastics. [10, 2007]

Front 1631

Class A Fires

Back 1631

Fires in ordinary combustible materials, such as wood, cloth, paper, rubber, and many plastics. [10:3.3]

Front 1632

Class A Fires

Back 1632

Fires in ordinary combustible materials, such as wood, cloth, paper, rubber, and many plastics. [10, 2002]

Front 1633

Class A Foam

Back 1633

Foam for use on fires in Class A fuels.

Front 1634

Class A Foam

Back 1634

Foam for use on fires in Class A fuels. [1150, 2004]

Front 1635

Class A Fuel

Back 1635

Materials such as vegetation, wood, cloth, paper, rubber, and some plastics in which combustion can occur at or below the surface. [1150,
2004]

Front 1636

Class A Fuel

Back 1636

Materials such as vegetation, wood, cloth, paper, rubber, and some plastics in which combustion can occur at or below the surface of the material.

Front 1637

Class A Fuel

Back 1637

Materials such as vegetation, wood, cloth, paper, rubber, and some plastics in which combustion can occur at or below the surface of the material. [1150, 2004]

Front 1638

Class A Furnace

Back 1638

An oven or furnace that has heat utilization equipment wherein there is a potential explosion or fire hazard that could be occasioned by the presence of flammable volatiles or combustible materials processed or heated in the furnace.

Front 1639

Class A Interior Finish

Back 1639

Materials having flame spread index 0-25, smoke developed index
0-450 when tested in accordance with NFPA 255, Standard Method of
Test of Surface Burning Characteristics of Building Materials. Includes any
material with a flame spread index of 25 or less and with a smoke
developed index of 450 or less when any element thereof, when
tested, does not continue to propagate fire.

Front 1640

Class A Mercantile Occupancy

Back 1640

All mercantile occupancies having an aggregate gross area of more than 30,000 ft2 (2800 m2) or occupying more than three stories for sales purposes. [101, 2009]

Front 1641

Class B

Back 1641

A fire in flammable liquids, combustible liquids, petroleum greases, tars, oils, oil-based paints, solvents, lacquers, alcohols, and flammable gases.

Front 1642

Class B

Back 1642

Fires in flammable liquids, combustible liquids, petroleum greases, tars, oils, oil-based paints, solvents, lacquers, alcohols, and flammable gases.

Front 1643

Class B

Back 1643

Flammable liquids.

Front 1644

Class B Fire

Back 1644

A fire in flammable liquids, combustible liquids, petroleum greases, tars, oils, oil-based paints, solvents, lacquers, alcohols, and flammable gases.

Front 1645

Class B Fire

Back 1645

A fire in flammable liquids, combustible liquids, petroleum greases, tars, oils, oil-based paints, solvents, lacquers, alcohols, and flammable gases. [10, 2002]

Front 1646

Class B Fire

Back 1646

A fire in flammable liquids, combustible liquids, petroleum greases, tars, oils, oil-based paints, solvents, lacquers, alcohols, and flammable gases. [10, 2007]

Front 1647

Class B Fire-Retardant Coating

Back 1647

A coating that reduces the flame spread to greater than 25 but not more than 75, and that has a smoke developed rating not exceeding
200 where applied to the applicable substrate, building material, or species of wood when tested in accordance with NFPA 255, ASTM E
84, or UL 723.

Front 1648

Class B Fires

Back 1648

Class B fires are fires in flammable liquids, combustible liquids, petroleum greases, tars, oils, oil-based paints, solvents, lacquers, alcohols, and flammable gases. [10, 2007]

Front 1649

Class B Fires

Back 1649

Fires in flammable liquids, combustible liquids, petroleum greases, tars, oils, oil-based paints, solvents, lacquers, alcohols, and flammable gases. [10, 2002]

Front 1650

Class B Fires

Back 1650

Fires in flammable liquids, combustible liquids, petroleum greases, tars, oils, oil-based paints, solvents, lacquers, alcohols, and flammable gases. [10:3.3]

Front 1651

Class B Foam

Back 1651

Foam intended for use on Class B fires.

Front 1652

Class B Furnace

Back 1652

An oven or furnace that has heat utilization equipment wherein there are no flammable volatiles or combustible materials being heated.

Front 1653

Class B Interior Finish

Back 1653

Materials having flame spread index 26-75, smoke developed index
0-450 when tested in accordance with NFPA 255, Standard Method of
Test of Surface Burning Characteristics of Building Materials. Includes any
material with a flame spread index of -25 or more but not more than
75 and with a smoke developed index of 450 or less.

Front 1654

Class B Mercantile Occupancy

Back 1654

All mercantile occupancies of more than 3000 ft2 (280 m2), but not more than 30,000 ft2 (2800 m2), aggregate gross area and occupying not more than three stories for sales purposes. Class B also includes all mercantile occupancies of not more than 3000 ft2 (280 m2) gross area and occupying two or three stories for sales purposes.[101, 2009]

Front 1655

Class C

Back 1655

Electrically charged components.

Front 1656

Class CC1 Plastics

Back 1656

Materials that have a burning extent of 25 mm or less when tested at a nominal thickness of 0.152 mm (0.060 in.) or in the thickness intended for use.

Front 1657

Class CC2 Plastics

Back 1657

Materials that have a burning rate of 1.06 mm/s or less when tested at a nominal thickness of 0.152 mm (0.060 in.) or in the thickness intended for use.

Front 1658

Class C Fire

Back 1658

A fire that involves energized electrical equipment.

Front 1659

Class C Fires

Back 1659

Class C fires are fires that involve energized electrical equipment. [10,
2007]

Front 1660

Class C Fires

Back 1660

Fires that involve energized electrical equipment. [10, 2002]

Front 1661

Class C Fires

Back 1661

Fires that involve energized electrical equipment where the electrical nonconductivity of the extinguishing media is of importance.

Front 1662

Class C Furnace

Back 1662

An oven or furnace that has a potential hazard due to a flammable or other special atmosphere being used for treatment of material in process.

Front 1663

Class C Mercantile Occupancy

Back 1663

All mercantile occupancies of not more than 3000 ft2 (280 m2) gross area and used for sales purposes occupying one story only. [101,
2009]

Front 1664

Class D

Back 1664

Combustible metals.

Front 1665

Class D Fires

Back 1665

Class D fires are fires in combustible metals, such as magnesium, titanium, zirconium, sodium, lithium, and potassium. [10, 2007]

Front 1666

Class D Fires

Back 1666

Fires in combustible metals, such as magnesium, titanium, zirconium, sodium, lithium, and potassium. [10, 2002]

Front 1667

Class D Fires

Back 1667

Fires in combustible metals, such as magnesium, titanium, zirconium, sodium, lithium, and potassium. [10:3.3]

Front 1668

Class D Furnace

Back 1668

An oven or furnace that is a pressure vessel that operates under vacuum for all or part of the process cycle.

Front 1669

Class IA Liquids

Back 1669

Those liquids that have flash points below 73°F (22.8°C) and boiling points below 100°F (37.8°C). [30, 2008]

Front 1670

Class IB Liquids

Back 1670

Those liquids that have flash points below 73°F (22.8°C) and boiling points at or above 100°F (37.8°C). [30, 2008]

Front 1671

Class IC Liquids

Back 1671

Those liquids that have flash points at or above 73°F (22.8°C), but below 100°F (37.8°C). [30, 2008]

Front 1672

Class I, Division 1

Back 1672

A Class I, Division 1 location is a location: (1) In which ignitible concentrations of flammable gases, flammable liquid-produced
vapors, or combustible liquid-produced vapors can exist under normal operating conditions, or (2) In which ignitible concentrations of such flammable gases, flammable liquid-produced vapors, or combustible liquids above their flash points may exist frequently because of repair or maintenance operations or because of leakage, or (3) In which breakdown or faulty operation of equipment or processes might release ignitible concentrations of flammable gases, flammable
liquid-produced vapors, or combustible liquid-produced vapors and might also cause simultaneous failure of electrical equipment in such a way as to directly cause the electrical equipment to become a source of ignition. [70:500.5(B)(1)]

Front 1673

Class I, Division 2

Back 1673

A Class I, Division 2 location is a location: (1) In which volatile flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are handled, processed, or used, but in which the liquids, vapors, or gases will normally be confined within closed containers or closed systems from which they can escape only in case of accidental rupture or breakdown of such containers or systems or
in case of abnormal operation of equipment, or (2) In which ignitible concentrations of flammable gases, flammable liquid-produced
vapors, or combustible liquid-produced vapors are normally prevented by positive mechanical ventilation, and which might become hazardous through failure or abnormal operation of the ventilating equipment, or (3) That is adjacent to a Class I, Division 1 location, and to which ignitible concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors above their flash points might occasionally be communicated unless such communication is prevented by adequate
positive-pressure ventilation from a source of clean air and effective safeguards against ventilation failure are provided. [70:500.5(B)(2)]

Front 1674

Classification and Definition of Liquids

Back 1674

Any liquid within the scope of this standard and subject to the requirements of this standard shall be known generally as either a flammable liquid or a combustible liquid and shall be defined and classified in accordance with this subsection. [30:1.7.3]

Front 1675

Classified

Back 1675

Products or materials of a specific group category that are constructed, inspected, tested, and subsequently reinspected in accordance with an established set of requirements.

Front 1676

Classified

Back 1676

Products or materials of a specific group category that are constructed, inspected, tested, and subsequently reinspected in accordance with an established set of requirements. The classification process is performed by an organization acceptable to the authority having jurisdiction. [80, 2007]

Front 1677

Classifier

Back 1677

A device to control pulverized fuel particle size distribution.

Front 1678

Class I Flammable Liquid

Back 1678

Any liquid that has a closed-cup flash point below 37.8°C (100°F) and a Reid vapor pressure not exceeding an absolute pressure of 276 kPa (40 psi) at 37.8°C (100°F).

Front 1679

Class I Fuel

Back 1679

For the purpose of this standard, any liquid fuel having a flash point below 37.8°C (100°F).

Front 1680

Class II Combustible Liquid

Back 1680

Any liquid that has a flash point at or above 100°F (37.8°C) and below
140°F (60°C).

Front 1681

Class II, Division 1

Back 1681

A Class II, Division 1 location is a location: (1) In which combustible dust is in the air under normal operating conditions in quantities sufficient to produce explosive or ignitible mixtures, or (2) Where mechanical failure or abnormal operation of machinery or equipment might cause such explosive or ignitible mixtures to be produced, and might also provide a source of ignition through simultaneous failure
of electric equipment, through operation of protection devices, or from other causes, or (3) In which combustible dusts of an electrically conductive nature may be present in hazardous quantities. [70:500.5(C)(1)]

Front 1682

Class II, Division 2

Back 1682

A Class II, Division 2 location is a location: (1) Where combustible dust is not normally in the air in quantities sufficient to produce explosive or ignitible mixtures, and dust accumulations are normally insufficient to interfere with the normal operation of electrical equipment or other apparatus, but combustible dust may be in suspension in the air as a result of infrequent malfunctioning of handling or processing equipment and (2) Where combustible dust accumulations on, in, or in the vicinity of the electrical equipment may be sufficient to interfere with the safe dissipation of heat from electrical equipment or may be ignitible by abnormal operation or failure of electrical equipment. [70:500.5(C)(2)]

Front 1683

Class IIIA Combustible Liquid

Back 1683

Any liquid that has a flash point at or above 140°F (60°C), but below
200°F (93°C).

Front 1684

Class IIIA Liquid

Back 1684

Any liquid that has a flash point at or above 140°F (60°C), but below
200°F (93°C). [30, 2008]

Front 1685

Class IIIA Solvents

Back 1685

Liquids having a flash point at or above 60°C (140°F) and below
93.4°C (200°F).

Front 1686

Class IIIB Combustible Liquid

Back 1686

Any liquid that has a flash point at or above 200°F (93°C).

Front 1687

Class IIIB Liquid

Back 1687

Any liquid that has a flash point at or above 200°F (93°C). [30, 2008]

Front 1688

Class IIIB Solvents

Back 1688

Liquids having a flash point at or above 93.4°C (200°F).

Front 1689

Class III Organic Peroxide

Back 1689

Organic peroxide formulations that burn rapidly and that present a moderate reactivity hazard.

Front 1690

Class III System

Back 1690

A system that provides 11/2 in. (40 mm) hose stations to supply water for use by trained personnel and 21/2 in. (65 mm) hose connections to supply a larger volume of water for use by fire departments and those trained in handling heavy fire streams.

Front 1691

Class III System

Back 1691

A system that provides 11/ in. (40 mm) hose stations to supply water
2
for use by trained personnel and 21/ in. (65 mm) hose connections
2
to supply a larger volume of water for use by fire departments and
those trained in handling heavy fire streams.
[14, 2007]

Front 1692

Class II Liquid

Back 1692

Any liquid that has a flash point at or above 100°F (37.8°C) and below
140°F (60°C). [30, 2008]

Front 1693

Class II Materials

Back 1693

Lightning conductors, air terminals, grounding electrodes, and associated fittings required for the protection of structures exceeding
23 m (75 ft) in height.

Front 1694

Class II Organic Peroxide

Back 1694

Organic peroxide formulations that burn very rapidly and that present a severe reactivity hazard.

Front 1695

Class II Solvents

Back 1695

Liquids having a flash point at or above 38°C (100°F) and below 60°C (140°F).

Front 1696

Class II System

Back 1696

A system that provides 11/ in. (40 mm) hose stations to supply water
2
for use primarily by trained personnel or by the fire department
during initial response.

Front 1697

Class II System

Back 1697

A system that provides 11/ in. (40 mm) hose stations to supply water
2
for use primarily by trained personnel or by the fire department
during initial response. [14, 2007]

Front 1698

Class I Liquid

Back 1698

Any liquid that has a closed-cup flash point below 100°F (37.8°C) and
a Reid vapor pressure not exceeding 40 psia (2068.6 mm Hg) at 100°F
(37.8°C), as determined by ASTM D 323, Standard Method of Test for
Vapor Pressure of Petroleum Products (Reid Method).
[30, 2008]

Front 1699

Class I Materials

Back 1699

Lightning conductors, air terminals, grounding electrodes, and associated fittings required for the protection of structures not exceeding 23 m (75 ft) in height.

Front 1700

Class I Organic Peroxide

Back 1700

Organic peroxide formulations that are capable of deflagration but not detonation.

Front 1701

Class I Solvents

Back 1701

Liquids having a flash point below 37.8°C (100°F).

Front 1702

Class I System

Back 1702

A system that provides 21/ in. (65 mm) hose connections to supply
2
water for use by fire departments and those trained in handling heavy
fire streams.

Front 1703

Class I System

Back 1703

A system that provides 21/ in. (65 mm) hose connections to supply
2
water for use by fire departments and those trained in handling heavy
fire streams. [14, 2007]

Front 1704

Class IV Organic Peroxide

Back 1704

Organic peroxide formulations that burn in the same manner as ordinary combustibles and that present a minimal reactivity hazard.

Front 1705

Class IV Solvents

Back 1705

Liquids classified as nonflammable.

Front 1706

Class I, Zone 0

Back 1706

A Class I, Zone 0 location is a location in which: (1) Ignitible concentrations of flammable gases or vapors are present continuously, or (2) Ignitible concentrations of flammable gases or vapors are present for long periods of time. [70:505.5(B)(1)]

Front 1707

Class I, Zone 1

Back 1707

A Class I, Zone 1 location is a location: (1) In which ignitible concentrations of flammable gases or vapors are likely to exist under normal operating conditions; or (2) In which ignitible concentrations of flammable gases or vapors may exist frequently because of repair or maintenance operations or because of leakage; or (3) In which equipment is operated or processes are carried on, of such a nature that equipment breakdown or faulty operations could result in the release of ignitible concentrations of flammable gases or vapors and also cause simultaneous failure of electrical equipment in a mode to cause the electrical equipment to become a source of ignition; or (4) That is adjacent to a Class I, Zone 0 location from which ignitible concentrations of vapors could be communicated, unless communication is prevented by adequate positive pressure ventilation from a source of clean air and effective safeguards against ventilation failure are provided. [70:505.5(B)(2)]

Front 1708

Class I, Zone 2

Back 1708

A Class I, Zone 2 location is a location: (1) In which ignitible concentrations of flammable gases or vapors are not likely to occur in normal operation and, if they do occur, will exist only for a short period; or (2) In which volatile flammable liquids, flammable gases,
or flammable vapors are handled, processed, or used but in which the liquids, gases, or vapors normally are confined within closed containers of closed systems from which they can escape, only as a result of accidental rupture or breakdown of the containers or system, or as a result of the abnormal operation of the equipment with which the liquids or gases are handled, processed, or used; or (3) In which ignitible concentrations of flammable gases or vapors normally are prevented by positive mechanical ventilation but which may become hazardous as a result of failure or abnormal operation of the ventilation equipment; or (4) That is adjacent to a Class I, Zone 1 location, from which ignitible concentrations of flammable gases or vapors could be communicated, unless such communication is prevented by adequate positive-pressure ventilation from a source of clean air and effective safeguards against ventilation failure are provided. [70:505.5(B)(3)]

Front 1709

Class K Fires

Back 1709

Class K fires are fires in cooking appliances that involve combustible cooking media (vegetable or animal oils and fats). [10, 2007]

Front 1710

Class V Organic Peroxide

Back 1710

Organic peroxide formulations that burn with less intensity than ordinary combustibles or do not sustain combustion and that present no reactivity hazard.

Front 1711

Clean Agent

Back 1711

Electrically nonconducting, volatile, or gaseous fire extinguishant that does not leave a residue upon evaporation. The word agent as used in this document means clean agent unless otherwise indicated.

Front 1712

Clean Agent

Back 1712

Electrically nonconducting, volatile, or gaseous fire extinguishant that does not leave a residue upon evaporation. The word “agent” as used in this document means “clean agent” unless otherwise indicated. [2001:1.3]

Front 1713

Clean Burn

Back 1713

A fire pattern on surfaces where soot has been burned away.

Front 1714

Clean(ing)

Back 1714

For kitchen exhaust systems and cooking equipment, the act of removing grease, oil deposits, and other residue.

Front 1715

Cleaning

Back 1715

The act of removing soils and contaminants from ensembles and ensemble elements by mechanical, chemical, thermal, or combined processes.

Front 1716

Cleaning

Back 1716

The physical removal of dirt and debris, which generally is accomplished with soap and water and physical scrubbing.

Front 1717

Cleaning

Back 1717

The removal of dirt and debris.

Front 1718

Cleaning Gloves

Back 1718

Multipurpose, multi-use gloves that provide limited protection from abrasion, cuts, snags, and punctures during cleaning and that are designed to provide a barrier against body fluids, cleaning fluids, and disinfectants.

Front 1719

Cleanout Opening

Back 1719

An opening or hole in a chimney, usually located near its base, designed to allow access to the flue for purposes of removing ash, creosote, soot, and other extraneous matter that becomes trapped.

Front 1720

Cleanroom

Back 1720

A room in which the concentration of airborne particles is controlled to specified limits, including areas below the raised floor and above the ceiling grid if these areas are part of the air path and within the rated construction.

Front 1721

Cleanroom

Back 1721

A room in which the concentration of airborne particles is controlled to specified limits, including areas below the raised floor and above the ceiling grid if these areas are part of the air path and within the rated construction. [318, 2006]

Front 1722

Cleanroom

Back 1722

A room in which the concentration of airborne particles is controlled to specified limits, including areas below the raised floor and above the ceiling grid if these areas are part of the air path and within the rated construction. [5000, 2009]

Front 1723

Clean-Up Personnel

Back 1723

Personnel primarily responsible for restoring a racing surface by mitigating liquid spills and removing debris.

Front 1724

Clean Zone

Back 1724

A defined space in which the concentration of airborne particles is controlled to specified limits.

Front 1725

Clean Zone

Back 1725

A defined space in which the concentration of airborne particles is controlled to specified limits. [318, 2009]

Front 1726

Clear (Air) Layer

Back 1726

The zone within a building containing air that has not been contaminated by the smoke produced from a fire in the building, and that is located between the floor and the smoke layer boundary.

Front 1727

Clearance

Back 1727

The air distance between extinguishing system equipment, including piping and nozzles, and unenclosed or uninsulated live electrical components not at ground potential.

Front 1728

Clearance

Back 1728

The air distance between extinguishing system equipment, including piping and nozzles, and unenclosed or uninsulated live electrical components not at ground potential. [2001, 2008]

Front 1729

Clearance

Back 1729

The air distance between Halon 1301 equipment, including piping and nozzles, and unenclosed or uninsulated live electrical components at other than ground potential.

Front 1730

Clearance

Back 1730

The distance between a heat-producing appliance, chimney, chimney connector, vent, vent connector, or plenum and other surfaces.

Front 1731

Clearance

Back 1731

The distance from the top of storage to the ceiling sprinkler deflectors.

Front 1732

Clear Layer Interface

Back 1732

The boundary between a smoke layer and smoke-free air.

Front 1733

Clearly Identified

Back 1733

Capable of being recognized by a person of normal vision without causing uncertainty and indecisiveness about the location or operating process of the identified item.

Front 1734

Clear Space

Back 1734

An area free of combustible materials but that can contain noncombustible materials that cannot transmit an exposure fire.

Front 1735

Clear Text

Back 1735

The use of plain language in radio communications transmissions.

Front 1736

Cleat

Back 1736

Fitting attached to the vessel used to secure an anchor rode or other line to the vessel.

Front 1737

Closed Array

Back 1737

A storage arrangement where air movement through the pile is restricted because of 6 in. (152 mm) or less vertical flues.

Front 1738

Closed Array (Paper)

Back 1738

A vertical storage arrangement in which the distances between columns in both directions are short [not more than 2 in. (50 mm) in one direction and 1 in. (25 mm) in the other].

Front 1739

Closed-Circuit SCBA

Back 1739

A recirculation-type SCBA in which the exhaled gas is rebreathed by the wearer after the carbon dioxide has been removed from the exhalation and after the oxygen content within the system has been restored from sources such as compressed breathing gas, chemical oxygen, and liquid oxygen.

Front 1740

Closed-Circuit SCBA

Back 1740

A recirculation-type SCBA in which the exhaled gas is re-breathed by the wearer after the carbon dioxide has been removed from the exhalation gas and the oxygen content within the system has been restored from sources such as compressed breathing air, chemical oxygen, and liquid oxygen, or compressed gaseous oxygen.
[1981, 2002]

Front 1741

Closed-Circuit SCBA

Back 1741

A recirculation-type SCBA in which the exhaled gas is rebreathed by the wearer after the carbon dioxide has been removed from the exhalation gas and the oxygen content within the system has been restored from sources such as compressed breathing air, chemical oxygen, liquid oxygen, or compressed gaseous oxygen.

Front 1742

Closed-Circuit Telephone
(Accessibility)

Back 1742

A telephone with a dedicated line, such as a house phone, courtesy phone, or phone that must be used to gain entry to a facility.

Front 1743

Closed Circuit Television
(CCTV)

Back 1743

A video system in which an analog or digital video signal travels from the camera to video monitoring stations at the protected premises.

Front 1744

Closed Combustible
Construction

Back 1744

Combustible building construction, including walls, structural framing, roofs, roof ceilings, floors, and floor-ceiling assemblies, continuously enclosing a grease duct on four sides where one or more sides are protected.

Front 1745

Closed Construction

Back 1745

Any building, building component, assembly, or system manufactured in such a manner that all concealed parts of processes of manufacture cannot be inspected before installation at the building site without disassembly, damage, or destruction.

Front 1746

Closed Container

Back 1746

A container as herein defined, so sealed by means of a lid or other device that neither liquid nor vapor will escape from it at ordinary temperatures.

Front 1747

Closed Container

Back 1747

A container as herein defined, so sealed by means of a lid or other device that neither liquid nor vapor will escape from it at ordinary temperatures. [30A, 2008]

Front 1748

Closed Container

Back 1748

A container as herein defined, so sealed by means of a lid or other device that neither liquid nor vapor will escape from it at ordinary temperatures. [30A:3.1]

Front 1749

Closed Container

Back 1749

A container as herein defined, so sealed by means of a lid or other device that neither liquid nor vapor will escape from it at ordinary temperatures. [30A:3.3]

Front 1750

Closed Container

Back 1750

A container as herein defined, so sealed by means of a lid or other device that neither liquid nor vapor will escape from it at ordinary temperatures. [30, 2003]

Front 1751

Closed Position Indicator
Switch

Back 1751

A switch that indicates when a valve is within 0.040 in. (1 mm) of its closed position but does not indicate proof of closure.

Front 1752

Closed Position (Rolling Steel
Fire Door)

Back 1752

A position of the door curtain with the underside of the bottom bar, including a compressible seal or sensing edge, if provided, in contact with the sill along the entire width of the opening.

Front 1753

Closed System Use (Material)

Back 1753

A solid or liquid hazardous material in a closed vessel or system that remains closed during normal operations where vapors emitted by the product are not liberated outside of the vessel or system and the product is not exposed to the atmosphere during normal operations and all uses of compressed gases.

Front 1754

Closed System Use (Material)

Back 1754

A solid or liquid hazardous material in a closed vessel or system that remains closed during normal operations where vapors emitted by the product are not liberated outside of the vessel or system and the product is not exposed to the atmosphere during normal operations, and all uses of compressed gases. [5000, 2009]

Front 1755

Closed-Top Diking

Back 1755

A dike with a cover intended to minimize the entrance of precipitation into the diked area.

Front 1756

Closed-Top Diking

Back 1756

A dike with a cover intended to minimize the entrance of precipitation into the diked area. [30, 2008]

Front 1757

Close-Off Pressure

Back 1757

The maximum pressure the pump is capable of developing at zero discharge flow.

Front 1758

Closet Storage Space

Back 1758

The volume bounded by the sides and back closet walls and planes extending from the closet floor vertically to a height of 1.8 m (6 ft) or to the highest clothes-hanging rod and parallel to the walls at a horizontal distance of 600 mm (24 in.) from the sides and back of the closet walls, respectively, and continuing vertically to the closet ceiling parallel to the walls at a horizontal distance of 300 mm (12 in.) or the width of the shelf, whichever is greater; for a closet that permits access to both sides of a hanging rod, this space includes the volume below the highest rod extending 300 mm (12 in.) on either side of the rod on a plane horizontal to the floor extending the entire length of the rod. See Figure 410.2.

Front 1759

Closing Device

Back 1759

A means of closing a door from the partially or fully opened position.

Front 1760

Clothes Closet

Back 1760

A non-habitable room or space intended primarily for storage of garments and apparel.

Front 1761

Clothes Dryer

Back 1761

A device used to dry wet laundry by means of heat derived from the combustion of fuel or from electric heating elements.

Front 1762

Clothes Dryer

Back 1762

A device used to dry wet laundry by means of heat derived from the combustion of fuel or from electric heating elements. [211, 2006]

Front 1763

Clothes Dryer

Back 1763

An appliance used to dry wet laundry by means of heat derived from the combustion of fuel gases.

Front 1764

Cloud Chamber Smoke
Detection

Back 1764

The principle of using an air sample drawn from the protected area into a high-humidity chamber combined with a lowering of chamber pressure to create an environment in which the resultant moisture in the air condenses on any smoke particles present, forming a cloud. The cloud density is measured by a photoelectric principle. The density signal is processed and used to convey an alarm condition when it meets preset criteria. (SIG-IDS)

Front 1765

Coal

Back 1765

A solid fuel classified as lignite, subbituminous, bituminous, or anthracite as defined by ASTM D 388, Standard Classification of Coals by Rank.

Front 1766

Coal Preparation

Back 1766

The separation, crushing, screening, washing, drying, storage, and loadout of coal to make ready for market.

Front 1767

Coal Preparation Plant

Back 1767

A facility designed to prepare coal for shipment, including coal mine surface buildings and structures, housing, and supporting
coal-processing and coal-handling equipment.

Front 1768

Coal Tar

Back 1768

A dark brown to black cementitious material produced by the destructive distillation of coal. [ASTM D 1079: 2.1]

Front 1769

Coaming

Back 1769

The raised framework around deck or bulkhead openings to prevent entry of water.

Front 1770

Coastal A Zone

Back 1770

An area within the special flood hazard area, landward of a V zone or landward of an open coast without mapped V zones. In a Coastal A Zone, the principal source of flooding must be astronomical tides, storm surges, seiches, or tsunamis, not riverine flooding. During the base flood, the potential for breaking wave heights shall be greater than or equal to 1.5 ft (455 mm). (See also 3.3.32.7.1, Special Flood Hazard Area.)

Front 1771

Coating

Back 1771

Application of special-purpose material such as an anticorrosion paint or a walkway paint.

Front 1772

Coating

Back 1772

A protective material impregnated, saturated, or coated on the outside reinforcement layer of the hose to provide additional reinforcement or protection for the hose.

Front 1773

Coating

Back 1773

A protective material impregnated, saturated, or coated on the outside reinforcement layer of the hose to provide additional reinforcement or protection for the hose. [1961, 2007]

Front 1774

Coaxial Cable

Back 1774

A cylindrical assembly composed of a conductor centered inside a metallic tube or shield, separated by a dielectric material, and usually covered by an insulating jacket.

Front 1775

Cockpit Voice Recorder
(CVR)

Back 1775

A device that monitors flight deck crew communications through a pickup on the flight deck connected to a recorder that is usually mounted in the tail area of the aircraft and that is designed to withstand certain impact forces and a degree of fire.

Front 1776

Code

Back 1776

A standard that is an extensive compilation of provisions covering broad subject matter or that is suitable for adoption into law independently of other codes and standards.

Front 1777

Coded

Back 1777

An audible or visible signal that conveys several discrete bits or units of information. Notification signal examples are numbered strokes of an impact-type appliance and numbered flashes of a visible appliance. (SIG-NAS)

Front 1778

Cofferdam

Back 1778

A void between the compartments or tanks of a ship for purposes of isolation.

Front 1779

Coiled Vessel

Back 1779

Tank vessels using a closed system or heating coils that use thermal oil as the heating medium.

Front 1780

Coking Plate

Back 1780

A plate adjacent to a grate through which no air passes and on which coal is placed for distilling the coal volatiles before the coal is moved onto the grate.

Front 1781

Cold Deck

Back 1781

A single ranked pile of logs with individual logs of regular or irregular length usually 20 ft to 50 ft (6.1 m to 15.2 m) long, but greater than
8 ft (2.4 m) long.

Front 1782

Cold Filling

Back 1782

The pressurizing of an aerosol container by cooling the propellant (and sometimes the product) below its boiling point and transferring it into the aerosol container before the valve is put in place. The operation is usually carried out at atmospheric pressure (that is, high pressure is not needed).

Front 1783

Cold Room

Back 1783

A refrigerated area large enough for personnel to enter. (LAB)

Front 1784

Cold Shutdown

Back 1784

A stable nuclear power plant condition in which the affected reactor is subcritical and the average reactor coolant system temperature is less than or equal to 200°F (93°C).

Front 1785

Cold Work

Back 1785

Any construction, alteration, repair, or shipbreaking that does not involve heat-, fire-, or spark-producing operations.

Front 1786

Cold Zone

Back 1786

The area immediately outside the boundary of the established warm zone where personnel are safe from the adverse effects of a fire.

Front 1787

Cold Zone

Back 1787

The area immediately outside the boundary of the established warm zone where personnel are safe from the adverse effects of a fire.
[600, 2005]

Front 1788

Cold Zone

Back 1788

The control zone of an incident that contains the command post and other support functions deemed necessary to control the incident.

Front 1789

Cold Zone

Back 1789

The control zone of an incident that contains the command post and such other support functions as are deemed necessary to control the incident.

Front 1790

Cold Zone

Back 1790

The control zone of an incident that contains the command post and such other support functions as are deemed necessary to control the incident. [1500, 2007]

Front 1791

Cold Zone

Back 1791

The control zone of hazardous materials/weapons of mass destruction incidents that contains the incident command post and such other support functions as are deemed necessary to control the incident.

Front 1792

Cold Zone

Back 1792

The hazard-free area around an incident.

Front 1793

Collapse Support Operations

Back 1793

Operations performed at the scene that include providing for rescuer comfort, scene lighting, scene management, and equipment readiness.

Front 1794

Collapse Type

Back 1794

Five general types of collapse include lean-to collapse, “V” shape collapse, pancake collapse, cantilever collapse, and A-frame collapse. (See Annex B.)

Front 1795

Collar

Back 1795

The portion of a coat or coverall that encircles the neck.

Front 1796

Collar

Back 1796

The portion of the coat or coverall that encircles the neck.

Front 1797

Collar Length

Back 1797

Upper torso garment measurement along top of collar from point-to-point.

Front 1798

Collar Lining

Back 1798

That part of collar fabric composite that is next to the skin when the collar is closed in the raised position.

Front 1799

Collar Lining

Back 1799

The part of collar fabric composite that is next to the skin when the collar is closed in the raised position.

Front 1800

Collar Width

Back 1800

Upper torso garment measurement at center back from top edge of unfolded collar to the bottom collar seam.

Front 1801

Collection Area

Back 1801

Location where seriously injured are collected initially.

Front 1802

Collections

Back 1802

Prehistoric and historic objects, works of art, natural history specimens, religious objects, archival documents, archeological artifacts, library media, and cultural materials assembled according to some rational scheme and maintained for the purposes of preservation, research, study, exhibition, publication, and interpretation for public benefit.

Front 1803

Collections

Back 1803

Prehistoric and historic objects, works of art, scientific specimens, religious objects, archival documents, archaeological artifacts, library media, and cultural materials assembled according to a rational scheme and maintained for the purpose of preservation, research, study, exhibition, publication, or interpretation.

Front 1804

Collections Storage Room

Back 1804

An enclosure providing a safe and secure environment for collections, including vaults and book stacks.

Front 1805

Collector Rings

Back 1805

An assembly of slip rings for transferring electrical energy from a stationary to a rotating member. [70:675.2]

Front 1806

Collector Rings

Back 1806

An assembly of slip rings for transferring electric energy from a stationary to a rotating member.

Front 1807

Collector Sewer

Back 1807

A sewer that consists of a pipe or conduit that receives wastewater from a relatively small area from two or more lateral sewers and that subsequently discharges into a trunk sewer.

Front 1808

Co-Located Telecommunications Equipment

Back 1808

Telecommunications equipment that is owned or leased and operated by other service providers (i.e., competitive local or long distance telephone service providers, internet service providers, or cable
service providers) that is placed in a telecommunications facility owned by a different service provider.

Front 1809

Color Graphic Interface
Device

Back 1809

An interface between the operator and the machine, where a color video display and either a touch screen or touch pad or keyboard or mouse are used to initiate machine action by the selection of
on-screen icons.

Front 1810

Column

Back 1810

A single vertical stack of rolls.

Front 1811

Column (Paper)

Back 1811

A single vertical stack of rolls of paper.

Front 1812

COMBI

Back 1812

An aircraft designed to transport both passengers and cargo on the same level within the fuselage.

Front 1813

Combi

Back 1813

An aircraft designed to transport both passengers and cargo on the same level within the fuselage. [402:3.3]

Front 1814

Combination Carbon
Monoxide Detection System

Back 1814

A carbon monoxide detection system in which components are used, in whole or in part, in common with a non-carbon monoxide signaling system, and in which components are not used as part of a fire alarm system.

Front 1815

Combination Compartment

Back 1815

A shower stall or recess that provides for or includes the installation of a toilet and is of such size and proportions that it may not be occupied by more than one person.

Front 1816

Combination Detector

Back 1816

A device that either responds to more than one of the fire phenomena or employs more than one operating principle to sense one of these phenomena. Typical examples are a combination of a heat detector with a smoke detector or a combination rate-of-rise and fixed-temperature heat detector. This device has listings for each sensing method employed. [72, 2007]

Front 1817

Combination Detector

Back 1817

A device that either responds to more than one of the fire phenomena or employs more than one operating principle to sense one of these phenomena. Typical examples are a combination of a heat detector with a smoke detector or a combination rate-of-rise and fixed-temperature heat detector. This device has listings for each sensing method employed. (SIG-IDS)

Front 1818

Combination Fire Alarm and
Guard’s Tour Box

Back 1818

A manually operated box for separately transmitting a fire alarm
signal and a distinctive guard patrol tour supervisory signal. (SIG-IDS)

Front 1819

Combination Fire and Smoke
Damper

Back 1819

A device that meets both the fire damper and smoke damper requirements.

Front 1820

Combination Fire and Smoke
Damper

Back 1820

A device that meets both the fire damper and smoke damper requirements. [5000, 2009]

Front 1821

Combination Fire Department

Back 1821

A fire department having emergency service personnel comprising less than 85 percent majority of either volunteer or career membership.

Front 1822

Combination Fire/Smoke
Damper

Back 1822

A device that meets both the fire damper and smoke damper requirements.

Front 1823

Combination-Fuel Boiler

Back 1823

A single boiler unit designed to burn more than one type of fuel (gas, oil, or solid), either separately or simultaneously, using either separate or common combustion chambers and flues.

Front 1824

Combination-Fuel Furnace

Back 1824

A single furnace unit designed to burn more than one type of fuel (gas, oil, or solid), either separately or simultaneously, using either separate or common combustion chambers and flues.

Front 1825

Combination Fuel Gas and Oil
Burner

Back 1825

A burner designed to burn either fuel gas or oil or to burn both simultaneously.

Front 1826

Combination Ladder

Back 1826

A ground ladder that is capable of being used as both a stepladder and as a single or extension ladder. [1931:3.3]

Front 1827

Combination Ladder

Back 1827

A ground ladder that is capable of being used both as a stepladder and as a single or extension ladder.

Front 1828

Combination Room
Heater/Fireplace Stove

Back 1828

A chimney-connected, solid fuel-burning room heater that is designed to be operated with the fire chamber either open or closed.

Front 1829

Combination SCBA/SAR

Back 1829

An atmosphere-supplying respirator that supplies a respirable atmosphere to the user from a combination of two breathing air sources both of which are independent of the ambient environment. [See also
3.3.1, Atmosphere-Supplying Respirator; 3.3.14, Self-Contained Breathing
Apparatus (SCBA); and 3.3.16, Supplied Air Respirator (SAR).]

Front 1830

Combination SCBA/SAR

Back 1830

An atmosphere-supplying respirator that supplies a respirable atmosphere to the user from a combination of two breathing air sources that both are independent of the ambient environment. [See also 3.3.2, Atmosphere-Supplying Respirator; 3.3.40, Self-Contained Breathing Apparatus (SCBA); and 3.3.43, Supplied Air Respirator (SAR).]

Front 1831

Combination System

Back 1831

A fire alarm system in which components are used, in whole or in part, in common with a non-fire signaling system. [72, 2007]

Front 1832

Combination System

Back 1832

A fire alarm system in which components are used, in whole or in part, in common with a non-fire signaling system. (SIG-PRO)

Front 1833

Combination System

Back 1833

A system of multiple control units that work together to provide one integrated control.

Front 1834

Combination Tool

Back 1834

A powered rescue tool that is capable of at least spreading and cutting.

Front 1835

Combination Vehicle

Back 1835

A vehicle consisting of a towing vehicle and one or more towed units.

Front 1836

Combination Waveform
Generator

Back 1836

A surge generator with a 2-ohm internal impedance producing a 1.2/50
µs open circuit voltage and an 8/20 µs short-circuit current waveshape.

Front 1837

Combined Dry Pipe-Preaction
Sprinkler System

Back 1837

A sprinkler system employing automatic sprinklers attached to a piping system containing air under pressure with a supplemental detection system installed in the same areas as the sprinklers. Operation of the detection system actuates tripping devices that open dry pipe valves simultaneously and without loss of air pressure in the system. Operation of the detection system also opens listed air exhaust valves at the end of the feed main, which usually precedes the opening of sprinklers. The detection system also serves as an automatic fire alarm system.

Front 1838

Combined Performance
Material

Back 1838

A retroreflective material that is also a fluorescent material.

Front 1839

Combined Sewer

Back 1839

A sewer intended to receive both wastewater and storm or surface water.

Front 1840

Combined Standpipe and
Sprinkler System

Back 1840

A system where the water piping services both 21/ in. (65 mm) outlets
2
for fire department use and outlets for automatic sprinklers.

Front 1841

Combined System

Back 1841

A standpipe system having piping that supplies both hose connections and automatic sprinklers.

Front 1842

Combined System

Back 1842

A system of piping that connects both sprinklers and water spray nozzles in a common fire area, and is supplied by a single riser and system actuation valve.

Front 1843

Combustible

Back 1843

A material or structure that will release heat energy on burning.

Front 1844

Combustible

Back 1844

Any material that, in the form in which it is used and under the conditions anticipated, will ignite and burn or will add appreciable heat to an ambient fire.

Front 1845

Combustible

Back 1845

A substance that will burn.

Front 1846

Combustible

Back 1846

Capable of burning, generally in air under normal conditions of ambient temperature and pressure, unless otherwise specified; combustion can occur in cases where an oxidizer other than the oxygen in air is present (e.g., chlorine, fluorine, or chemicals containing oxygen in their structure).

Front 1847

Combustible

Back 1847

Capable of reacting with oxygen and burning if ignited.

Front 1848

Combustible

Back 1848

Capable of reacting with oxygen and burning if ignited. [220, 2006]

Front 1849

Combustible

Back 1849

Capable of undergoing combustion.

Front 1850

Combustible

Back 1850

Capable of undergoing combustion. (GAS)

Front 1851

Combustible Concentration
Reduction

Back 1851

The technique of maintaining the concentration of combustible material in a closed space below the lower flammable limit.

Front 1852

Combustible Containers

Back 1852

Containers that include paper bags, fiber drums, plastic containers, and wooden or fiber boxes or barrels, as well as noncombustible containers having removable combustible liners or packing, and noncombustible containers in combustible overpacks.

Front 1853

Combustible Dust

Back 1853

A combustible particulate solid that presents a deflagration hazard when suspended in air or some other oxidizing medium over a range of concentrations, regardless of particle size or shape.

Front 1854

Combustible Dust

Back 1854

A combustible particulate solid that presents a fire or deflagration hazard when suspended in air or some other oxidizing medium over a range of concentration, regardless of particle size or shape. [654,
2006]

Front 1855

Combustible Dust

Back 1855

A combustible particulate solid that presents a fire or deflagration hazard when suspended in air or some other oxidizing medium over a range of concentrations, regardless of particle size or shape.

Front 1856

Combustible Dust

Back 1856

A combustible particulate solid that presents a fire or deflagration hazard when suspended in air or some other oxidizing medium over a range of concentrations, regardless of particle size or shape. [654,
2006]

Front 1857

Combustible Dust

Back 1857

Any finely divided solid material that is 420 microns or smaller in diameter (i.e., material that will pass through a U.S. No. 40 standard sieve) that presents a fire or explosion hazard when dispersed and ignited in air or other gaseous oxidizer.

Front 1858

Combustible Dust

Back 1858

Any finely divided solid material that is 420 microns or smaller in diameter (material passing a U.S. No. 40 Standard Sieve) and presents a fire or explosion hazard when dispersed and ignited in air.

Front 1859

Combustible Dust, Class II

Back 1859

Class II combustible dusts are divided into Groups E, F, and G.

Front 1860

Combustible Fiber

Back 1860

Any material in a fibrous or shredded form that readily ignites when heat sources are present.

Front 1861

Combustible Gas Detection
System

Back 1861

A protection technique utilizing stationary gas detectors in industrial establishments.

Front 1862

Combustible Gas Detector

Back 1862

A gas detector used to detect the presence of flammable vapors and gases and to warn when concentrations in air approach the explosive range.

Front 1863

Combustible Gas Indicator

Back 1863

An instrument that samples air and indicates whether there are combustible vapors present. [921, 2004]

Front 1864

Combustible Gas Indicator

Back 1864

An instrument that samples air and indicates whether there are combustible vapors present and may also indicate the percentage of the lower explosive limit of the air-gas mixture.

Front 1865

Combustible Gas Indicator

Back 1865

An instrument that samples air and indicates whether there are ignitible vapors or gases present.

Front 1866

Combustible Liquid

Back 1866

A liquid having a closed-cup flash point at or above 100°F (37.8°C), subdivided as follows: (a) Class II liquids include those having a flash point at or above 100°F (37.8°C) and below 140°F (60°C); (b) Class IIIA liquids include those having a flash point at or above 140°F (60°C) and below 200°F (93.4°C); (c) Class IIIB liquids include those having a flash point at or above 200°F (93.4°C).

Front 1867

Combustible Liquid

Back 1867

A liquid having a flash point at or above 37.8°C (100°F). Combustible liquids shall be subdivided as follows: (a) Class II liquids shall include those having flash points at or above 37.8°C (100°F) and below 60°C (140°F); (b) Class IIIA liquids shall include those having flash points at or above 60°C (140°F) and below 93°C (200°F); (c) Class IIIB liquids shall include those having flash points at or above 93°C (200°F). (LAB)

Front 1868

Combustible Liquid

Back 1868

A liquid having a flash point at or above 37.8°C (100°F). Combustible liquids shall be subdivided as follows: Class II liquids shall include those having closed-cup flash points at or above 37.8°C (100°F) and below 60°C (140°F); Class IIIA liquids shall include those having closed-cup flash points at or above 60°C (140°F) and below 93°C (200°F); Class IIIB
liquids shall include those having closed-cup flash points at or above 93°C (200°F).

Front 1869

Combustible Liquid

Back 1869

A liquid that has a closed-cup flash point at or above 100°F (37.8°C).

Front 1870

Combustible Liquid

Back 1870

A liquid that has a closed-cup flash point at or above 37.8°C (100°F).

Front 1871

Combustible Liquid

Back 1871

A liquid that has a closed-cup flash point at or above 37.8°C (100°F). [30,
2003]

Front 1872

Combustible Liquid

Back 1872

A liquid that has a closed-cup flash point at or above 37.8°C (100°F). [30:3.3]

Front 1873

Combustible Liquid

Back 1873

A liquid that has a closed-cup flash point at or above 37.8°C (100°F). [306, 2003]

Front 1874

Combustible Liquid

Back 1874

Any liquid that has a closed-cup flash point at or above 100°F (37.8°C).

Front 1875

Combustible Liquid

Back 1875

Any liquid that has a closed-cup flash point at or above 100°F (37.8°C). [306, 2003]

Front 1876

Combustible Liquid

Back 1876

Any liquid that has a closedcup flash point at or above 100°F (37.8°C), as determined by the test procedures and apparatus set forth in 1.7.4 [of NFPA 30]. Combustible liquids are classified as Class II or Class III as follows: (1) Class II Liquid — any liquid that has a flash point at or above 100°F (37.8°C) and below 140°F (60°C); (2) Class IIIA — any liquid that has a flash point at or above 140°F (60°C), but below 200°F (93°C); (3) Class IIIB — any liquid that has a flash point at or above
200°F (93°C). [30, 2003]

Front 1877

Combustible Liquid

Back 1877

Any liquid that has a closed-cup flash point at or above 100°F (37.8°C), as determined by the test procedures and apparatus set forth in 3.4.4. Combustible liquids are classified as Class II or Class III as follows: (1) Class II Liquid — any liquid that has a flash point at or
above 100°F (37.8°C) and below 140°F (60°C); (2) Class IIIA Liquid —
any liquid that has a flash point at or above 140°F (60°C) but below
200°F (93°C); (3) Class IIIB Liquid — any liquid that has a flash point
at or above 200°F (93°C). [30:1.7.3.1]

Front 1878

Combustible Liquid

Back 1878

Any liquid that has a closed-cup flash point at or above 100°F (37.8°C), as determined by the test procedures and apparatus set
forth in NFPA 30. Combustible liquids are classified as Class II or Class
III combustible liquids. [30, 2008]

Front 1879

Combustible Liquid

Back 1879

Any liquid that has a closed-cup flash point at or above 100°F (37.8°C), as determined by the test procedures and apparatus set forth in Section 1.7.

Front 1880

Combustible Liquid

Back 1880

Any liquid that has a closed-cup flash point at or above 100°F (37.8°C), as determined by the test procedures and apparatus set forth in Section 4.4. Combustible liquids are classified according to Section 4.3.

Front 1881

Combustible Liquid

Back 1881

Any liquid that has a closed-cup flash point at or above 100°F (37.8°C), as determined by the test procedures and apparatus set forth in Section 4.4 of NFPA 30, Flammable and Combustible Liquids Code. Combustible liquids are classified according to Section 4.3 of NFPA 30. [30, 2008]

Front 1882

Combustible Liquid

Back 1882

Any liquid that has a closed-cup flash point at or above 100°F (37.8°C). Combustible liquids shall be classified as Class II or Class III as follows: Class II Liquid. Any liquid that has a flash point at or above
100°F (37.8°C) and below 140°F (60°C). Class IIIA. Any liquid that has a flash point at or above 140°F (60°C), but below 200°F (93°C). Class IIIB. Any liquid that has a flash point at or above 200°F (93°C).[30, 2003]

Front 1883

Combustible Liquid

Back 1883

Any liquid that has a closed-cup flash point at or above 37.8°C (100°F).

Front 1884

Combustible Liquid

Back 1884

Any liquid that has a closed-cup flash point at or above 37.8°C (100°F). [30, 2003]

Front 1885

Combustible Liquid

Back 1885

Any liquid that has a closed-cup flash point at or above 37.8°C (100°F). [306, 2003]

Front 1886

Combustible Liquid

Back 1886

Any liquid that has a closed-cup flash point at or above 37.8°C (100°F). (See also 3.3.70, Flammable Liquid.)

Front 1887

Combustible Liquid

Back 1887

Any liquid that has a closed-cup flash point at or above 37.8°C (100°F). (See NFPA 30, Flammable and Combustible Liquids Code.)

Front 1888

Combustible Liquid

Back 1888

Any liquid that has a flash point at or above 100°F (37.8°C) and below
140°F (60°C).

Front 1889

Combustible Liquid

Back 1889

A liquid that has a closed-cup flash point at or above 100°F (37.8°C). Combustible Liquid Classification. Combustible Liquid Class II. Any liquid that has a flash point at or above 100°F (37.8°C) and below
140°F (60°C). Combustible Liquid Class IIIA. Any liquid that has a flash point at or above 140°F (60°C), but below 200°F (93°C). Combustible Liquid Class IIIB. Any liquid that has a flash point at or above 200°F (93°C).

Front 1890

Combustible Liquid, Class II

Back 1890

Any liquid that has a flash point at or above 100°F (37.8°C) and below
140°F (60°C). [30, 2008]

Front 1891

Combustible Liquid Class II

Back 1891

Any liquid that has a flash point at or above 37.8°C (100°F) and below
60°C (140°F). [30, 2003]

Front 1892

Combustible Liquid, Class
IIIA

Back 1892

Any liquid that has a flash point at or above 140°F (60°C), but below
200°F (93°C). [30, 2008]

Front 1893

Combustible Liquid Class IIIA

Back 1893

Any liquid that has a flash point at or above 60°C (140°F), but below
93°C (200°F). [30, 2003]

Front 1894

Combustible Liquid, Class IIIB

Back 1894

Any liquid that has a flash point at or above 200°F (93°C). [30, 2008]

Front 1895

Combustible Liquid
Class IIIB

Back 1895

Any liquid that has a flash point at or above 93°C (200°F). [30, 2003]

Front 1896

Combustible Liquid Storage
Area — Fixed

Back 1896

An area used for storage of Class II and Class III combustible liquids that is infrequently moved, and where the aggregate quantity present shall not exceed 5000 gal (18,925 L). Handling of liquids incidental to transfer can take place within a storage area.

Front 1897

Combustible Liquid Storage
Area — Mobile

Back 1897

Self-propelled or mobile equipment fitted with suitable containers or tanks and other related fixtures used for the storage, transport, and dispensing of Class II and Class III combustible liquids. The aggregate quantity of combustible liquid carried on such equipment does not exceed 1000 gal (3785 L).

Front 1898

Combustible Liquid Storage
Area — Portable

Back 1898

An area used for storage of Class II and Class III combustible liquids that is periodically moved, and where the aggregate quantity present does not exceed 1000 gal (3785 L). Handling of liquids incidental to transfer can take place within a storage area.

Front 1899

Combustible Load of a
Vehicle

Back 1899

The total value of heat energy that can be released through complete combustion of the components of a vehicle or fuel expressed in joules [British thermal units (Btu)].

Front 1900

Combustible Material

Back 1900

A generic term used to describe a flammable gas, flammable liquid produced vapor, or combustible liquid produced vapor mixed with air that may burn or explode.

Front 1901

Combustible Material

Back 1901

A generic term used to describe either a mixture of dust in air, or a hybrid mixture, that may burn, flame, or explode.

Front 1902

Combustible Material

Back 1902

A material capable of undergoing combustion.

Front 1903

Combustible (Material)

Back 1903

A material that, in the form in which it is used and under the conditions anticipated, will ignite and burn; a material that does not meet the definition of noncombustible or limited-combustible.

Front 1904

Combustible (Material)

Back 1904

A material that, in the form in which it is used and under the conditions anticipated, will ignite and burn; a material that does not meet the definition of noncombustible or limited-combustible. [101,
2009]

Front 1905

Combustible (Material)

Back 1905

A material that, in the form in which it is used and under the conditions anticipated, will ignite and burn; a material that does not meet the definition of noncombustible or limited-combustible. [5000,
2006]

Front 1906

Combustible Material

Back 1906

A material that, in the form in which it is used and under the conditions anticipated, will ignite, burn, support combustion, or release flammable vapors when subjected to fire of heat, when tested in accordance with ASTM E 136, Standard Test Method for Behavior of Materials in a Vertical Tube Furnace at 750°C.

Front 1907

Combustible Material

Back 1907

Any material that will burn regardless of its autoignition temperature.

Front 1908

Combustible Material

Back 1908

Any material that will burn, regardless of its autoignition temperature. [220, 2006]

Front 1909

Combustible Material

Back 1909

As pertaining to materials adjacent to or in contact with
heat-producing appliances, vent connectors, gas vents, chimneys,
steam and hot water pipes, and warm air ducts, materials made of or
surfaced with wood, compressed paper, plant fibers, or other
materials that are capable of being ignited and burned. Such material
shall be considered combustible even though flame-proofed,
fire-retardant treated, or plastered.

Front 1910

Combustible Material

Back 1910

Material made of or surfaced with wood, compressed paper, plant fibers, plastics, liquids, or other material that will ignite and burn, whether flame-proofed or not, or whether plastered or unplastered.

Front 1911

Combustible Material

Back 1911

Material made of or surfaced with wood, compressed paper, plant fibers, plastics, or other material that can ignite and burn, whether flameproofed or not, or whether plastered or unplastered.

Front 1912

Combustible Material (Class I, Division)

Back 1912

Class I, Division combustible materials are divided into Groups A, B, C, and D.

Front 1913

Combustible Material (Class I, Zone)

Back 1913

Class I, Zone combustible materials are divided into Groups IIC, IIB, and IIA.

Front 1914

Combustible Metal

Back 1914

Any metal composed of distinct particles or pieces, regardless of size, shape, or chemical composition, that will burn.

Front 1915

Combustible Metal Dust

Back 1915

Any finely divided metal 425 microns (40 mesh) or smaller.

Front 1916

Combustible Metal Powder

Back 1916

Combustible particulates that are intentionally produced as the product of a manufacturing process.

Front 1917

Combustible or Explosive
Dust

Back 1917

A dust capable of spontaneous combustion or of exploding or burning when subjected to a source of ignition.

Front 1918

Combustible Particulate Solid

Back 1918

A combustible solid material comprised of distinct particles or pieces, regardless of size, shape, or chemical composition, that is capable of being pneumatically conveyed.

Front 1919

Combustible Particulate Solid

Back 1919

A combustible solid material comprised of distinct particles or pieces, regardless of size, shape, or chemical composition, that is capable of being pneumatically conveyed. [69, 2008]

Front 1920

Combustible Particulate Solid

Back 1920

Any combustible solid material, composed of distinct particles or pieces, regardless of size, shape, or chemical composition.

Front 1921

Combustible Powder

Back 1921

Any finely divided solid coating material that is capable of being ignited.

Front 1922

Combustible Refuse

Back 1922

All combustible or loose rubbish, litter, or waste materials generated by an occupancy that are refused, rejected, or considered worthless and are disposed of by incineration on the premises where generated or periodically transported from the premises.

Front 1923

Combustible Waste

Back 1923

Combustible or loose waste material that is generated by an establishment or process and, if salvageable, is retained for scrap or reprocessing on the premises where generated or transported to a plant for processing.

Front 1924

Combustion

Back 1924

A chemical process of oxidation that occurs at a rate fast enough to produce heat and usually light in the form of either a glow or a flame.

Front 1925

Combustion

Back 1925

A chemical process of oxidation that occurs at a rate fast enough to produce heat and usually light in the form of either a glow or flame.

Front 1926

Combustion

Back 1926

A chemical process of oxidation that occurs at a rate fast enough to produce heat and usually light in the form of either a glow or flame. [211:3.3]

Front 1927

Combustion

Back 1927

A chemical process (such as oxidation) accompanied by the rapid evolution of heat and light. (GAS)

Front 1928

Combustion

Back 1928

As used herein, the rapid oxidation of fuel gases accompanied by the production of heat or heat and light. Complete combustion of a fuel is possible only in the presence of an adequate supply of oxygen.

Front 1929

Combustion Air

Back 1929

Air used to react with the fuel in the combustion process. For duct burners, this generally is combustion turbine exhaust.

Front 1930

Combustion Air

Back 1930

The air necessary to provide for the complete combustion of fuel and usually consisting of primary air, secondary air, and excess air.

Front 1931

Combustion Air

Back 1931

The air necessary to provide for the complete combustion of fuel and usually consisting of primary air, secondary air, and excess air.
[211, 2006]

Front 1932

Combustion Air Pressure Switch

Back 1932

A pressure-activated switch arranged to effect a safety shutdown or to prevent the burner system from being actuated when the combustion air pressure is below its design set point.

Front 1933

Combustion Chamber

Back 1933

The portion of an appliance within which combustion occurs.

Front 1934

Combustion Chamber

Back 1934

The portion of the boiler or HRSG enclosure into which the fuel is fed, ignited, and burned.

Front 1935

Combustion Control System

Back 1935

The control system that regulates the furnace fuel and air inputs to maintain the air-fuel ratio within the limits that are required for continuous combustion and stable flame throughout the operating range of the boiler in accordance with demand.

Front 1936

Combustion Control System in a Fluidized Bed

Back 1936

In a fluidized bed, the control system that regulates the furnace fuel input, furnace air input, bed inventory, and other bed heat transfer mechanisms to maintain the bed temperature and the air-fuel ratio within the limits necessary for continuous combustion and stable bed operation throughout the operating range of the boiler in accordance with demand.

Front 1937

Combustion Control System in
HRSG Systems

Back 1937

In HRSG systems, the control system that regulates the fuel input and air, where applicable, to maintain continuous combustion and stable flame.

Front 1938

Combustion Efficiency

Back 1938

The ratio of chemical heat of combustion to theoretical heat of combustion.

Front 1939

Combustion Gas Turbine
Engines

Back 1939

An engine that produces shaft power utilizing the Brayton (joule) cycle, where atmospheric air is drawn in and compressed; the compressed air then flows into a combustion chamber where fuel is injected and continuous combustion occurs, resulting in
high-pressure hot gas to the expansion section (turbine) where the heat energy is converted to rotating, mechanical energy.

Front 1940

Combustion Products

Back 1940

Constituents resulting from the combustion of a fuel with the oxygen of the air, including the inert but excluding excess air.

Front 1941

Combustion Products

Back 1941

Constituents resulting from the combustion of a fuel with the oxygen of the air, including the inerts but excluding excess air.

Front 1942

Combustion Products

Back 1942

Heat, gases, solid particulates, and liquid aerosols produced by burning.

Front 1943

Combustion Products

Back 1943

The gases, volatilized liquids and solids, particulate matter, and ash generated by combustion. (GAS)

Front 1944

Combustion Safeguard

Back 1944

A safety control directly responsive to flame properties that senses the presence or absence of flame and de-energizes the fuel safety valve in the event of flame failure.

Front 1945

Combustion Safety Circuitry

Back 1945

That portion of the oven control circuitry that contains the contacts, arranged in series ahead of the safety shutoff valve(s) holding medium, for the required safety interlocks and the excess temperature limit controller(s).

Front 1946

Combustion Turbine

Back 1946

A turbine in which the rotating element is actuated by the pressure of combustion gases on curved vanes.

Front 1947

Combustion Turbine Exhaust
Systems

Back 1947

All ductwork from the combustion turbine exhaust to the stack, including any emission control systems contained within the exhaust flow path.

Front 1948

Combustion Turbine Purge

Back 1948

A flow of air at purge rate through the combustion turbine and the appropriate portion of the HRSG enclosure or other combustion turbine exhaust systems for a number of volume changes sufficient to effectively remove any gaseous or suspended combustibles and replace them with the air.

Front 1949

Combustion Turbine Runback

Back 1949

The controlled unloading of a combustion turbine to a level required by HRSG or other equipment control demands.

Front 1950

Comet

Back 1950

A single pellet of pyrotechnic composition that is ignited and simultaneously propelled into the air from a mortar or tube; a comet is self-consuming as it rises into the air and can be designed to split apart.

Front 1951

Comet

Back 1951

A single pellet of pyrotechnic composition that is ignited and simultaneously propelled into the air from a mortar or tube; a comet is self-consuming as it rises into the air and can be designed to split apart. [1123, 2006]

Front 1952

Command

Back 1952

The act of directing and/or controlling resources by virtue of explicit legal, agency, or delegated authority.

Front 1953

Command and
Communications Apparatus

Back 1953

A fire apparatus used primarily for communications and incident command.

Front 1954

Command Post

Back 1954

The location where the incident commander and associated staff are located during an emergency incident.

Front 1955

Command Post (CP)

Back 1955

The location at the scene of an emergency where the incident commander is located and where command, coordination, control, and communications are centralized.

Front 1956

Command Post (CP)

Back 1956

The location at the scene of an emergency where the incident commander is located and where command, coordination, control, and communications are centralized. [402, 2002]

Front 1957

Command Post (CP)

Back 1957

The location at the scene of an emergency where the incident commander is located and where command, coordination, control, and communications are centralized. [402, 2008]

Front 1958

Command Radio Channel

Back 1958

A radio channel designated by the emergency services organization that is provided for communications between the incident commander and the division/group supervisors or branch directors during an emergency incident.

Front 1959

Command Staff

Back 1959

In an incident management organization, positions consisting of the Incident Commander, Public Information Officer, Safety Officer, Liaison Officer, and other positions as required.

Front 1960

Command Staff

Back 1960

The command staff consists of the public information officer, safety officer, and liaison officer who report directly to the incident commander and are responsible for functions in the incident management system that are not a part of the function of the line organization.

Front 1961

Commercial-Industrial-Type Incinerator (Classes III, IV, V, VI, and VII)

Back 1961

An incinerator having a charging capacity in excess of 5 ft3 (0.142 m3) and suitable for a variety of wastes as follows: (1) Class III — Waste Type 0, Type 1, or Type 2; (2) Class IV — Waste Type 3; (3) Class V — Waste Types 0-4 (municipal incinerators); (4) Class VI — Waste Type
4; (5) Class VII — Waste Types 5 and 6.

Front 1962

Commercial Manufacturer

Back 1962

Any individual, firm, partnership, joint venture, corporation, or other business entity engaged in research, development, production, preparation, testing, maintenance, or supply of rockets, rocket motors, rocket propellant chemicals, rocket propellant, delay or ejection modules, or rocket components or parts.

Front 1963

Commercial Manufacturer

Back 1963

Any individual, firm, partnership, joint venture, corporation, or other business entity engaged in research, development, production, preparation, testing, maintenance, or supply of rockets, rocket motors, rocket propellant chemicals, rocket propellant, delay or ejection modules, or rocket components or parts. [1122, 2002]

Front 1964

Commercial Monitoring Station

Back 1964

A monitoring station having ownership that is not the same ownership as the properties being monitored.

Front 1965

Commercial Operation

Back 1965

The date that the full plant capacity is formally added to the power grid.

Front 1966

Commercial User

Back 1966

A person, such as a commercial grower, a certified applicator, a pest control operator, a fumigator, or a greenhouse operator, who stores pesticides in a storage building or storage area to which the public ordinarily does not have access.

Front 1967

Commissioning

Back 1967

The acceptance testing, integrated system testing, operational tune-up, and start-up testing is the process by which baseline test results verify the proper operation and sequence of operation of electrical equipment, in addition to developing baseline criteria by which future trend analysis can identify equipment deterioration.

Front 1968

Commissioning

Back 1968

The time period of plant testing and operation between initial operation and commercial operation.

Front 1969

Commodity

Back 1969

The combination of products, packing material, and container that determines commodity classification. [13, 2007]

Front 1970

Commodity

Back 1970

The combination of products, packing material, and container that determines commodity classification.

Front 1971

Common Atmosphere

Back 1971

The atmosphere that exists between rooms, spaces, or areas within a building that are not separated by an approved smoke barrier.

Front 1972

Common Battery

Back 1972

The battery used to power recorders, transmitters, relays, other communications center equipment, and alternate communications center equipment.

Front 1973

Common Duct

Back 1973

The duct work containing the exhaust air from two or more branch ducts.

Front 1974

Common Mode Noise

Back 1974

Undesirable electrical signals that exist between a circuit conductor and the grounding conductor.

Front 1975

Common Passenger Vehicle

Back 1975

Light or medium duty passenger and commercial vehicles commonly encountered in the jurisdiction and presenting no unusual construction, occupancy, or operational characteristics to rescuers during an extrication event.

Front 1976

Common Path of Travel

Back 1976

The portion of exit access that must be traversed before two separate and distinct paths of travel to two exits are available.

Front 1977

Common Path of Travel

Back 1977

The portion of exit access that must be traversed before two separate and distinct paths of travel to two exits are available.
[101, 2009]

Front 1978

Common Space

Back 1978

The area of the developed subterranean space other than buildings, including but not limited to roadways, railways, loading docks, and entrances.

Front 1979

Common Use (Accessibility)

Back 1979

Interior or exterior rooms, spaces, or elements that are made available for the use of a restricted group of people.

Front 1980

Common Vent

Back 1980

A vent connecting at the junction of fixture drains and serving as a vent for more than one fixture.

Front 1981

Common Vent

Back 1981

That portion of a vent or chimney system that conveys products of combustion from more than one appliance.

Front 1982

Common Vent Manifold

Back 1982

A horizontal extension of the common vent within the room in which the appliances are installed.

Front 1983

Communicable Disease

Back 1983

A disease that can be transmitted from one person to another.

Front 1984

Communicate Signal

Back 1984

Transmit knowledge of a detected fire via human or automatic or a combination of human and automatic means to a responsible recipient of the information.

Front 1985

Communicating Space

Back 1985

A space within a building that has an open pathway to a large-volume space such that smoke from a fire either in the communicating space or in a large-volume space can move from one to another without restriction.

Front 1986

Communications

Back 1986

For road tunnels, bridges, and limited access highways, radio, telephone, and messaging throughout the facility and particularly at the operations control center.

Front 1987

Communications

Back 1987

Radio, telephone, and messenger services throughout the system and particularly at the central supervising station and command post.

Front 1988

Communications Center

Back 1988

A building or portion of a building that is specifically configured for the primary purpose of providing emergency communications services or public safety answering point (PSAP) services to one or more
public safety agencies under the authority or authorities having jurisdiction.

Front 1989

Communications Center

Back 1989

A building or portion of a building that is specifically configured for the primary purpose of providing emergency communications services or public safety answering point (PSAP) services to one or more
public safety agencies under the authority or authorities having jurisdiction. [1221, 2007]

Front 1990

Communications Channel

Back 1990

A circuit or path connecting a subsidiary station(s) to a supervising station(s) over which signals are carried. (SIG-SSS)

Front 1991

Communications Circuit

Back 1991

The circuit that extends voice, audio, video, data, interactive services, telegraph (except radio), outside wiring for fire alarm and burglar alarm from the communications utility to the customer’s communications equipment up to and including terminal equipment such as a telephone, fax machine, or answering machine.

Front 1992

Communications Circuit
Integrity (CI) Cable

Back 1992

Cable used in communications systems to ensure continued operation of critical circuits during a specified time under fire conditions.

Front 1993

Communications Equipment

Back 1993

The electronic equipment that performs the telecommunications operations for the transmission of audio, video, and data, and includes power equipment (e.g., dc converters, inverters, and batteries) and technical support equipment (e.g., computers).

Front 1994

Communications Officer

Back 1994

The individual responsible for development of plans to make the most effective use of incident-assigned communications equipment and facilities, installation and testing of all communications equipment, supervision and operation of the incident communications center, distribution and recovery of equipment assigned to incident personnel, and maintenance and on-site repair of communications equipment.

Front 1995

Communications System

Back 1995

A combination of links or networks that serves a general function such as a system made up of command, tactical, logistical, and administrative networks.

Front 1996

Communications Team

Back 1996

As related to caves, a specific combination of resources with a leader, personnel, and common equipment assembled for the purpose of establishing and maintaining communications between various locations in and out of the cave.

Front 1997

Communications Unit

Back 1997

Functional unit within the service branch of the logistics section is responsible for the incident communications plan, the installation and repair of communications equipment, and operation of the incident communications center; also, a vehicle (trailer or mobile van) used to provide the major part of an incident communications center.

Front 1998

Community Building

Back 1998

Any nonresidential building used for manufactured home community purposes.

Front 1999

Community Management

Back 1999

The person or entity who owns a development or has charge, care, or control of a community (e.g., park, estate, or subdivision).

Front 2000

Community Resource List

Back 2000

A list that includes all private and public contact numbers that provide
the available community resources to mitigate a specified type or range of
rescue incidents and hazardous conditions in the community.

Front 2001

Community Risk

Back 2001

Risk that pertains to the overall community, as opposed to individual properties, locales, stakeholders, or other community elements.

Front 2002

Community Street

Back 2002

A private way that affords principal means of access to abutting individual sites, homes, and buildings.

Front 2003

Compact Storage Module

Back 2003

An assembly of shelving sections mounted on carriages with the arrangement of carriages on tracks so as to provide one moving aisle serving multiple carriages between fixed end ranges.

Front 2004

Compact Storage System

Back 2004

A storage installation composed of multiple compact storage modules.

Front 2005

Companionway

Back 2005

An interior stair-ladder used to travel from deck to deck, usually enclosed.

Front 2006

Company

Back 2006

A ground vehicle providing specified equipment capability and personnel (engine company, truck company, rescue company, etc.).

Front 2007

Company

Back 2007

A group of members: (1) Under the direct supervision of an officer; (2) Trained and equipped to perform assigned tasks; (3) Usually organized and identified as engine companies, ladder companies, rescue companies, squad companies, or multi-functional companies; (4) Operating with one piece of fire apparatus (engine, ladder truck, elevating platform, quint, rescue, squad, ambulance) except where multiple apparatus are assigned that are dispatched and arrive together, continuously operate together, and are managed by a single company officer; (5) Arriving at the incident scene on fire apparatus. [1500:3.3]

Front 2008

Company

Back 2008

A group of members (1) under the direct supervision of an officer; (2) trained and equipped to perform assigned tasks; (3) usually organized and identified as engine companies, ladder companies, rescue companies, squad companies, or multi-functional companies; (4)
operating with one piece of fire apparatus (pumper, aerial fire apparatus, elevating platform, quint, rescue, squad, ambulance) except where multiple apparatus are assigned that are dispatched and arrive together, continuously operate together, and are managed by a single company officer; (5) arriving at the incident scene on fire apparatus.

Front 2009

Company

Back 2009

A group of members (1) under the direct supervision of an officer; (2) trained and equipped to perform assigned tasks; (3) usually organized and identified as engine companies, ladder companies, rescue companies, squad companies, or multi-functional companies; (4)
operating with one piece of fire apparatus (pumper, aerial fire apparatus, elevating platform, quint, rescue, squad, ambulance) except where multiple apparatus are assigned that are dispatched and arrive together, continuously operate together, and are managed by a single company officer; (5) arriving at the incident scene on fire apparatus. [1500, 2007]

Front 2010

Company

Back 2010

A group of members having the following characteristics: (a) Under the direct supervision of an officer or leader (b) Trained and equipped to perform assigned tasks (c) Usually organized and identified as engine companies, ladder companies, rescue companies, squad companies (d) Usually operating with one piece of fire apparatus (e.g., quint, pumper, ladder truck, elevating platform, rescue, squad, or ambulance) (e) Arriving at the incident scene on fire apparatus or assembling at the scene prior to assignment. [1500, 2007]

Front 2011

Company

Back 2011

A group of members that is (1) under the direct supervision of an officer or leader; (2) trained and equipped to perform assigned tasks; (3)
usually organized and identified as engine companies, ladder companies, rescue companies, or squad companies; (4) usually operates with one piece of fire apparatus (pumper, ladder truck, elevating platform, rescue, squad, ambulance); and (5) arrives at the incident scene on fire
apparatus or assembles at the scene prior to assignment. The term company, as used in this standard, is synonymous with company unit, response team, and response group.

Front 2012

Company

Back 2012

A group of members with the following characteristics: (1) under the direct supervision of an officer; (2) trained and equipped to perform assigned tasks; (3) usually organized and identified as engine companies, ladder companies, rescue companies, squad companies, or multifunctional companies; (4) usually operating with one piece of fire apparatus (engine, ladder truck, elevating platform, quint, rescue, squad, ambulance); (5) arriving at the incident scene on fire apparatus; (6) company configurations shall be permitted to allow for multiple apparatus that are dispatched and arrive together, continuously operate together, and are managed by a single company officer.

Front 2013

Company

Back 2013

The basic fire-fighting organizational unit staffed by various grades of fire fighters under the supervision of an officer and assigned to one or more specific pieces of apparatus.

Front 2014

Company Officer

Back 2014

A supervisor of a crew/company of personnel.

Front 2015

Company Officer

Back 2015

The individual responsible for command of a company, a designation not specific to any particular fire department rank (can be a fire fighter, lieutenant, captain, or chief officer, if responsible for command of a single company).

Front 2016

Company Officer

Back 2016

The officer or any other position of comparable responsibility in the department in charge of a fire department company or station.

Front 2017

Compartment

Back 2017

A space completely enclosed by walls and a ceiling. The compartment enclosure is permitted to have openings in walls to an adjoining space if the openings have a minimum lintel depth of 8 in. (203 mm) from the ceiling and the openings do not exceed 8 ft (2.44 m) in width. A single opening of 36 in. (914 mm) or less in width without a lintel is permitted when there are no other openings to adjoining spaces. [13,
2007]

Front 2018

Compartment

Back 2018

A space completely enclosed by walls and a ceiling. The compartment enclosure is permitted to have openings in walls to an adjoining space if the openings have a minimum lintel depth of 8 in. (203 mm) from the ceiling and the openings do not exceed 8 ft (2.44 m) in width. A single opening of 36 in. (914 mm) or less in width without a lintel is permitted when there are no other openings to adjoining spaces.

Front 2019

Compartment

Back 2019

A subdivision of space or room in a ship.

Front 2020

Compartment

Back 2020

For the purposes of this standard, a liquidtight division in a cargo tank.

Front 2021

Compartment

Back 2021

The subdivision of a building by fire-resistant construction methods to create defensible areas.

Front 2022

Compartment

Back 2022

Within a recreational vehicle, an enclosed volumetric space designed to provide for a separate area.

Front 2023

Compartmentation

Back 2023

The interposing of a physical barrier that is not required to be fire or explosion resistant in order to limit combustible particulate solid migration and hence to control the size of a hazard area.

Front 2024

Compartmented

Back 2024

The rigid separation of the products in a container by dividers that form a stable unit under fire conditions.

Front 2025

Compass

Back 2025

A device that uses the earth’s magnetic field to indicate relative direction.

Front 2026

Compatibility Listed

Back 2026

A specific listing process that applies only to two-wire devices, such as smoke detectors, that are designed to operate with certain control equipment. (SIG-FUN)

Front 2027

Compatible Material

Back 2027

A material that, when in contact with an oxidizer, will not react with the oxidizer or promote or initiate its decomposition.

Front 2028

Compatible Material

Back 2028

A material that, when in contact with an oxidizer, will not react with the oxidizer or promote or initiate its decomposition. [
430, 2004]

Front 2029

Compensated System

Back 2029

A system that adjusts for changing conditions either by modulating supply airflows or by relieving excess pressure.

Front 2030

Compensation/Claims Unit

Back 2030

Functional unit within the finance/administrative section responsible for financial concerns resulting from injuries or fatalities at incident.

Front 2031

Compensatory Action

Back 2031

Actions taken if an impairment to a required system, feature, or component prevents that system, feature, or component from performing its intended function. These actions are a temporary alternative means of providing reasonable assurance that the
necessary function will be compensated for during the impairment, or an act to mitigate the consequence of a fire. Compensatory measures include but are not limited to actions such as firewatches, administrative controls, temporary systems, and features of components.

Front 2032

Competence

Back 2032

Possessing knowledge, skills, and judgment needed to perform indicated objectives.

Front 2033

Competence

Back 2033

The possession of knowledge, skills, and judgment needed to perform indicated objectives satisfactorily.

Front 2034

Competent Person

Back 2034

A person meeting all of the requirements of a qualified person, as defined in Article 100 in Chapter 1 of this document and, in addition, is responsible for all work activities or safety procedures related to custom or special equipment, and has detailed knowledge regarding the electrical hazard exposure, the appropriate controls for mitigating those hazards, and the implementation of those controls.

Front 2035

Competent Person

Back 2035

A person who is designated in writing by their employer in accordance with 29 CFR 1915.7.

Front 2036

Competent Person

Back 2036

A person who is designated in writing by their employer in accordance with 29 CFR 1915.7. [306, 2003]

Front 2037

Competent Person

Back 2037

One who is capable of identifying existing and predictable hazards in the surroundings or working conditions that are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them.

Front 2038

Competent Person

Back 2038

One who is capable of identifying existing and predictable hazards in the surroundings or working conditions that are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them. [1006:3.3]

Front 2039

Competition Area

Back 2039

The designated area of a motorsports venue in which vehicles compete, perform, train, demonstrate, or test at competitive speeds.

Front 2040

Complementary Agent

Back 2040

Agents that provide unique extinguishing capability beyond the primary chosen agent.

Front 2041

Complementary Extinguishing
Agent

Back 2041

Refers to an extinguishing agent that has the compatibility to perform fire suppression functions in support of a primary extinguishing agent and where extinguishment might not be achievable using only the primary agent.

Front 2042

Completeness Uncertainty

Back 2042

Uncertainty in the predictions of a model due to model scope limitations. This uncertainty reflects an unanalyzed contribution or reduction of risk due to limitations of the available analytical methods.

Front 2043

Complex High Power Rocket

Back 2043

A high power rocket that is multistaged or propelled by two or more rocket motors.

Front 2044

Complex Rehabilitation Project
Involving Multiple Codes

Back 2044

A rehabilitation project or portion thereof that involves two or more construction codes and either (1) is an addition, a change of occupancy, or a reconstruction; or (2) is in any category of work and involves the installation of sprinklers.

Front 2045

Compliance

Back 2045

Adherence or conformance to laws and standards.

Front 2046

Compliance

Back 2046

Adherence or conformance to laws and standards. [914, 2005]

Front 2047

Compliance

Back 2047

Adherence or conformance to laws, regulations, and standards.

Front 2048

Compliance/Compliant

Back 2048

Meeting or exceeding all applicable requirements of this standard.

Front 2049

Compliance/Compliant

Back 2049

Meeting or exceeding all applicable requirements of this standard. [1971, 2007]

Front 2050

Compliance/Compliant

Back 2050

Product that meets or exceeds all applicable requirements of this standard and is certified.

Front 2051

Compliant

Back 2051

Certified as meeting or exceeding all applicable requirements of this standard.

Front 2052

Compliant

Back 2052

Meeting or exceeding all applicable requirements of this standard.

Front 2053

Compliant

Back 2053

Verified as meeting or exceeding all applicable requirements of this standard.

Front 2054

Compliant Product

Back 2054

Product that is covered by this standard and has been certified as meeting all applicable requirements of this standard that pertain to the product.

Front 2055

Compliant Product(s)

Back 2055

Clothing or equipment that is certified to the applicable NFPA
standard.

Front 2056

Component

Back 2056

A constituent part of a fire apparatus or system.

Front 2057

Component

Back 2057

A constituent part of a mechanical or electrical device.

Front 2058

Component

Back 2058

Any material, part, or subassembly used in the construction of the compliant product.

Front 2059

Component

Back 2059

Any material, part, or subassembly used in the construction of the garment necessary for meeting the requirements of this standard.

Front 2060

Component

Back 2060

Any material, part, or subassembly used in the construction of the protective ensemble or any element of the protective ensemble. [1971, 2007]

Front 2061

Component

Back 2061

A part or element of an architectural, electrical, mechanical, or structural system. [ASCE/SEI 7:11.2]

Front 2062

Component Manufacturer’s
Certification

Back 2062

A signed application approval furnished by the component manufacturer that certifies that the component is approved as being properly installed or applied, or both, in the vehicle for its intended use, or the component complies with the respective construction criteria required by the standard.

Front 2063

Component Part(s)

Back 2063

Any material(s) or part(s) used in the construction of a vapor-protective ensemble or ensemble elements.

Front 2064

Component(s)

Back 2064

Any material, part, or subassembly used in the construction of the compliant product.

Front 2065

Components

Back 2065

A part, or a system of parts, that functions as a unit in an LNG plant and could include, but is not limited to, piping, processing equipment, containers, control devices, impounding systems, electrical systems, security devices, fire control equipment, and communication equipment.

Front 2066

Components and Cladding

Back 2066

Elements of the building envelope that do not qualify as part of the main wind-force resisting system. [ASCE/SEI 7:6.2]

Front 2067

Components of Emergency Medical Service (EMS) System

Back 2067

The parts of a comprehensive plan to treat an individual in need of emergency medical care following an illness or injury.

Front 2068

Composite

Back 2068

A combination of materials that are generally recognized as distinct entities — for example, coated or laminated materials.

Front 2069

Composite

Back 2069

Any layering of ensemble material(s), ensemble element materials, or components as they appear in the final garment construction.

Front 2070

Composite

Back 2070

The layer or layers of materials or components.

Front 2071

Composite Container

Back 2071

A container consisting of an inner metal or plastic gas-containing component, reinforced with a filament and resin outer layer.

Front 2072

Composite Materials

Back 2072

Lightweight materials having great structural strength. They are made of fine fibers embedded in carbon/epoxy materials. The fibers are usually boron, fiberglass, aramid, or carbon in the form of graphite. Composite materials do not present unusual fire-fighting problems, but products of their combustion should be considered a respiratory hazard to fire fighters.

Front 2073

Composite Optical Fiber
Cable

Back 2073

These cables contain optical fibers and current-carrying electrical conductors.

Front 2074

Composite Propellant

Back 2074

A mixture consisting of an elastomeric-type fuel and an oxidizer used in gas generators and rocket motors.

Front 2075

Composite Propellant Rocket
Motor

Back 2075

Any device as defined under rocket motor that utilizes a propellant charge consisting primarily of an inorganic oxidizer dispersed in a carbonaceous polymeric binder.

Front 2076

Composite Wood Structural
Panel

Back 2076

A structural panel that is made of layers of veneer and wood-based material.

Front 2077

Compost

Back 2077

The product of the thermophilic biological oxidation of sludge or other organic materials.

Front 2078

Compound Gauge

Back 2078

A gauge that indicates pressure both above and below atmospheric pressure.

Front 2079

Compound Gauge

Back 2079

A gauge that indicates pressure both above and below atmospheric pressure. [1901, 2003]

Front 2080

Compound Rope Mechanical
Advantage System

Back 2080

A combination of individual rope mechanical advantage systems created by stacking the load end of one rope mechanical advantage system onto the haul line of another or others to multiply the forces created by the individual system(s).

Front 2081

Comprehensive Emergency
Management Plan

Back 2081

Planning document that includes preplan information and resources for the management of catastrophic emergencies within the jurisdiction.

Front 2082

Comprehensive Emergency
Management Plan (CEMP)

Back 2082

A disaster plan that conforms to guidelines established by the authority having jurisdiction and is designed to address natural, technological, and man-made disasters.

Front 2083

Compressed Air Foam System
(CAFS)

Back 2083

A foam system that combines air under pressure with foam solution to create foam.

Front 2084

Compressed Air Foam System
(CAFS)

Back 2084

A foam system that combines air under pressure with foam solution to create foam. [1901, 2003]

Front 2085

Compressed Air Foam System
(CAFS)

Back 2085

A foam system that combines air under pressure with foam solution to create foam in the hose or a mixing chamber.

Front 2086

Compressed Breathing Air

Back 2086

A respirable gas mixture derived from either normal atmospheric air or from manufactured synthetic air, stored in a compressed state in storage cylinders and respirator breathing air cylinders, and supplied to the user in a gaseous form.

Front 2087

Compressed Breathing Air

Back 2087

A respirable gas mixture derived from either normal atmospheric air or from manufactured synthetic air, stored in a compressed state in storage cylinders and respirator breathing air cylinders, and supplied to the user in a gaseous form. (See also 3.3.14, Synthetic Breathing Air.)

Front 2088

Compressed Gas

Back 2088

A material, or mixture of materials, that (1) is a gas at 20°C (68°F) or less at an absolute pressure of 101.325 kPa (14.696 psia) and (2) that has a boiling point of 20°C (68°F) or less at an absolute pressure of
101.325 kPa (14.7 psia) and that is liquefied, nonliquefied, or in solution, except those gases that have no other health or physical hazard properties are not considered to be compressed gases until the pressure in the packaging exceeds an absolute pressure of 280 kPa (40.6 psia) at 20°C (68°F).

Front 2089

Compressed Gas

Back 2089

A material, or mixture of materials, that (1) is a gas at 68°F (20°C) or less at 14.7 psia (101.3 kPa) of pressure, and (2) has a boiling point of
68°F (20°C) or less at 14.7 psia (101.3 kPa) that is either liquefied, nonliquefied, or in solution, except those gases that have no other health or physical hazard properties are not considered to be compressed until the pressure in the packaging exceeds 41 psia (282.5 kPa) at 68° (20°C). [5000, 2009]

Front 2090

Compressed Gas

Back 2090

A material, or mixture of materials, that (1) is a gas at 68°F (20°C) or less at 14.7 psia (101.3 kPa) of pressure, and (2) has a boiling point of
68°F (20°C) or less at 14.7 psia (101.3 kPa) that is either liquefied, nonliquefied, or in solution, except those gases that have no other health or physical hazard properties are not considered to be compressed until the pressure in the packaging exceeds 41 psia (282.5 kPa) at 68°F (20°C).

Front 2091

Compressed Gas

Back 2091

Any material or mixture having, when in its container, an absolute pressure exceeding 40 psia (an absolute pressure of 276 kPa) at 70°F (21.1°C) or, regardless of the pressure at 70°F (21.1°C), having an absolute pressure exceeding 104 psia (an absolute pressure of 717 kPa) at 130°F (54.4°C).

Front 2092

Compressed Gas

Back 2092

In semiconductor fabrication facilities, any material or mixture
having, when in its container, an absolute pressure exceeding 276 kPa
(40 psia) at 21°C (70°F) or, regardless of the pressure at 21°C (70°F),
having an absolute pressure exceeding 717 kPa (104 psia) at 54.4°C
(130°F) or any flammable liquid having an absolute vapor pressure
exceeding 275.8 kPa at 37.8°C (40 psia at 100°F) as determined by
ASTM D 323, Standard Test Method for Vapor Pressure of Petroleum
Products.

Front 2093

Compressed Gas Container

Back 2093

A pressure vessel designed to hold compressed gas at an absolute pressure greater than 1 atmosphere at 20°C (68°F) that includes cylinders, containers, and tanks.

Front 2094

Compressed Gas Container

Back 2094

A pressure vessel designed to hold compressed gas at an absolute pressure greater than 1 atmosphere at 68°F (20°C) that includes cylinders, containers, and tanks. [55, 2005]

Front 2095

Compressed Gas Container

Back 2095

A pressure vessel designed to hold compressed gases at pressures greater than 1 atmosphere at 68°F (20°C) that includes cylinders, containers, and tanks.

Front 2096

Compressed Gas Container

Back 2096

A pressure vessel designed to hold compressed gases at pressures greater than 1 atmosphere at 68°F (20°C) that includes cylinders, containers, and tanks. [5000, 2009]

Front 2097

Compressed Gas Cylinder

Back 2097

Any portable pressure vessel of 45.4 kg (100 lb) water capacity or less designed to contain a gas or liquid that is authorized for use at gauge pressures over 276 kPa (40 psi) at 21°C (70°F) by the U.S. Department of Transportation (DOT) or Transport Canada (T.C.).

Front 2098

Compressed Gases in Solution

Back 2098

Nonliquefied gases that are dissolved in a solvent.

Front 2099

Compressed Gas Mixtures

Back 2099

A mixture of two or more compressed gases contained in a packaging, the hazard properties of which are represented by the properties of the mixture as a whole.

Front 2100

Compressed Gas System

Back 2100

An assembly of equipment designed to contain, distribute, or transport compressed gases.

Front 2101

Compressed Gas System

Back 2101

An assembly of equipment designed to contain, distribute, or transport compressed gases. [318, 2002]

Front 2102

Compressed Gas System

Back 2102

An assembly of equipment designed to contain, distribute, or transport compressed gases. [318, 2009]

Front 2103

Compressed Natural Gas
(CNG)

Back 2103

A natural lighter-than-air gas compressed for use as a fuel that consists principally of methane in gaseous form plus naturally occurring mixtures of hydrocarbon gases.

Front 2104

Compressed Natural Gas
(CNG)

Back 2104

Mixtures of hydrocarbon gases and vapors consisting principally of methane in gaseous form that has been compressed for use as a vehicular fuel.

Front 2105

Compression Discharge
Pressure

Back 2105

The varying pressure at the point of discharge from the compressor.

Front 2106

Compressor

Back 2106

A device used for increasing the pressure and density of a gas.

Front 2107

Computational Fluid Dynamics

Back 2107

A solution of fundamental equations of fluid flow using computer techniques allowing the engineer to identify velocities, pressures, temperatures, and so forth.

Front 2108

Computer-Aided Dispatch
(CAD)

Back 2108

A combination of hardware and software that provides data entry, makes resource recommendations, notifies and tracks those resources before, during, and after alarms, preserving records of those alarms and status changes for later analysis.

Front 2109

Computer-Aided Dispatch
(CAD)

Back 2109

A combination of hardware and software that provides data entry, makes resource recommendations, notifies and tracks those resources before, during and after alarms, preserving records of those alarms and status changes for later analysis. [1221, 2007]

Front 2110

Computer-Aided Dispatch
(CAD)

Back 2110

A dispatching method or process in which a computer and its associated terminal(s) are used to provide relative dispatch data to the concerned telecommunicator.

Front 2111

Concealable Nonmetallic
Extension.

Back 2111

A listed assembly of two, three, or four insulated circuit conductors within a nonmetallic jacket, an extruded thermoplastic covering, or a sealed nonmetallic covering. The classification includes surface extensions intended for mounting directly on the surface of walls or ceilings, and concealed with paint, texture, joint compound, plaster, wallpaper, tile, wall paneling, or other similar materials.

Front 2112

Concealed

Back 2112

Rendered inaccessible by the structure or finish of the building. Wires in concealed raceways are considered concealed, even though they may become accessible by withdrawing them.

Front 2113

Concealed

Back 2113

Rendered inaccessible by the structure or finish of the building. Wires in concealed raceways are considered concealed, even though they may become accessible by withdrawing them.
[70, 2005] [See 3.3.1.1, Accessible (as applied to wiring methods).]

Front 2114

Concealed Gas Piping

Back 2114

Gas piping that, when in place in a finished building, would require removal of permanent construction to gain access to the piping.

Front 2115

Concealed Knob-and-Tube
Wiring

Back 2115

A wiring method using knobs, tubes, and flexible nonmetallic tubing for the protection and support of single insulated conductors.

Front 2116

Concealed Spaces

Back 2116

That portion(s) of a building behind walls, over suspended ceilings, in pipe chases, attics, and whose size might normally range from 44.45 mm (13/ in.) stud spaces to 2.44 m (8 ft) interstitial truss spaces and that
4
might contain combustible materials such as building structural
members, thermal and/or electrical insulation, and ducting.

Front 2117

Concealed Sprinkler

Back 2117

A recessed sprinkler with cover plates.

Front 2118

Concentration

Back 2118

The percent of foam concentrate contained in a foam solution.

Front 2119

Concentration

Back 2119

The percent of water additive concentrate contained in a water additive solution.

Front 2120

Concentration

Back 2120

The ratio of the amount of one constituent of a homogeneous mixture to the total amount of all constituents in the mixture.

Front 2121

Concentration-Time Curve

Back 2121

A plot of the concentration of a gaseous toxicant (µL/L) or of fire effluent (g·m-3) as a function of time.

Front 2122

Concourse

Back 2122

Intermediate level(s) or area(s) connecting a station platform(s) to a public way via stairs, escalators, or corridors.

Front 2123

Concrete Lintel

Back 2123

A precast concrete horizontal member spanning and carrying the load above an opening.

Front 2124

Concurrent

Back 2124

Acting in conjunction; used to describe a situation wherein two or more control devices exist in an actuated condition at the same time (but not necessarily simultaneously).

Front 2125

Concurrent Maintenance

Back 2125

The testing, troubleshooting, repair, and/or replacement of a
component or subsystem while redundant component(s) or subsystem(s)
are serving the load, where the ability to perform concurrent
maintenance is critical to attaining the specified reliability/availability
criteria for the system or facility.

Front 2126

Concussion Effect

Back 2126

A pyrotechnic effect that produces a loud noise and a violent jarring shock for dramatic effect.

Front 2127

Concussion Mortar

Back 2127

A device specifically designed and constructed, when loaded with pyrotechnic material, to produce a concussion effect.

Front 2128

Condensate

Back 2128

Any material that has been condensed from the vapor state to the liquid state.

Front 2129

Condensate (Condensation)

Back 2129

The liquid that separates from a gas (including flue gas) due to a reduction in temperature or an increase in pressure.

Front 2130

Condensed Aerosol

Back 2130

An extinguishing medium consisting of finely divided solid particles, generally less than 10 microns in diameter, and gaseous matter,
generated by a combustion process of a solid aerosol-forming compound.

Front 2131

Condenser

Back 2131

A piece of equipment that lowers the temperature of a vapor to the point where it changes to a liquid.

Front 2132

Conduction

Back 2132

A transfer of heat from a region of higher temperature through a material by a molecular mechanism not involving bulk motion to a region of lower temperature.

Front 2133

Conduction

Back 2133

Heat transfer to another body or within a body by direct contact.

Front 2134

Conductive

Back 2134

Possessing the ability to allow the flow of an electric charge; possessing a conductivity greater than 104 picosiemens per meter (pS/m) or a resistivity less than 108 ohm-meters (Ω-m).

Front 2135

Conductive

Back 2135

Suitable for carrying electric current.

Front 2136

Conductive Optical Fiber
Cable

Back 2136

These optical fiber cables contain non-current-carrying conductive members such as metallic strength members, metallic vapor barriers, and metallic armor or sheath.

Front 2137

Conductor

Back 2137

A material or object that allows an electric charge to flow easily through it.

Front 2138

Conductor, Bare

Back 2138

A conductor having no covering or electrical insulation whatsoever.

Front 2139

Conductor, Bare

Back 2139

A conductor having no covering or electrical insulation whatsoever. [70, 2008]

Front 2140

Conductor, Covered

Back 2140

A conductor encased within material of composition or thickness that is not recognized by this Code as electrical insulation.

Front 2141

Conductor, Covered

Back 2141

A conductor encased within material of composition or thickness that is not recognized by this standard as electrical insulation.
[70, 2008]

Front 2142

Conductor, Insulated

Back 2142

A conductor encased within material of composition and thickness that is recognized by this Code as electrical insulation.

Front 2143

Conductor, Insulated

Back 2143

A conductor encased within material of composition and thickness that is recognized by this standard as electrical insulation.
[70, 2008]

Front 2144

Conduit Body

Back 2144

A separate portion of a conduit or tubing system that provides access through a removable cover(s) to the interior of the system at a junction of two or more sections of the system or at a terminal point of the system.

Front 2145

Confidential Information

Back 2145

Information to which access is restricted.

Front 2146

Confidentiality

Back 2146

A principle of law and professional ethics that recognizes the privacy of individuals.

Front 2147

Confine

Back 2147

To restrict the fire within determined boundaries established either prior to the fire or during the fire.

Front 2148

Confine a Fire

Back 2148

To restrict the fire within determined boundaries established either prior to the fire or during the fire.

Front 2149

Confine/Contain Fire

Back 2149

Provide building construction features and built-in equipment in order to limit the fire or fire products, or both, to within the barriers surrounding the area where the fire originated.

Front 2150

Confined Animals

Back 2150

Animals housed such that human intervention is required for their release and evacuation in case of emergency.

Front 2151

Confined Space

Back 2151

An area large enough and so configured that a member can bodily enter and perform assigned work but which has limited or restricted means for entry and exit and is not designed for continuous human occupancy.

Front 2152

Confined Space

Back 2152

An area large enough and so configured that a member can bodily enter and perform assigned work but which has limited or restricted means for entry and exit and is not designed for continuous human occupancy. [1500, 2007]

Front 2153

Confined Space

Back 2153

An area large enough and so configured that a member can bodily enter and perform assigned work but which has limited or restricted means for entry or exit and is not designed for continuous human occupancy. [1500, 2002]

Front 2154

Confined Space

Back 2154

Any work location or enclosure in which either of the following exists: (1) the dimensions are such that a person who is 1.8 m (6 ft) tall cannot stand up in the middle of the space or extend his or her arms in all directions without hitting the enclosure, (2) access to or from the enclosure is by manhole, hatch, port, or other relatively small opening that limits ingress and egress to one person at a time. Confined spaces include but are not limited to the following: pulverizers, ducts, heaters, windboxes, cyclones, coal dust collectors, furnaces, bunkers, bins and HRSGs.

Front 2155

Confined Space

Back 2155

A space that is large enough and so configured that a person can
enter and perform assigned work, that has limited or restricted means
for entry or exit (e.g., tanks, vessels, silos, storage bins, hoppers, vaults,
and pits), and that is not designed for continuous human occupancy.

Front 2156

Confined Space

Back 2156

A space that is not intended for continuous occupancy and that has limited openings for the entry and exit of persons who perform assigned work within the space.

Front 2157

Confined Space

Back 2157

A space whose volume is less than 1.42 m3/293 W (50 ft3/1000
Btu/hr) of the aggregate input rating of all appliances installed in
that space. [211, 2006]

Front 2158

Confined Space

Back 2158

A space whose volume is less than 50 ft3/1000 Btu/hr (1.42 m3/293
W) of the aggregate input rating of all appliances installed in that
space.

Front 2159

Confined Space

Back 2159

For purposes of tank entry, cleaning, or repair, any tank that meets all three of the following requirements: (1) is large enough and so configured that a person can enter and perform assigned work, (2)
has limited or restricted means for entry or exit, (3) is not designed or meant to be continuously occupied. (See also 3.3.20, Permit Required Confined Space, and 3.3.18, Nonconfined Space.)

Front 2160

Confined Space

Back 2160

For the purposes of this standard, a space whose volume is less than
50 ft3 per 1000 Btu/hr (4.8 m3 per kW) of the aggregate input rating of all appliances installed in that space.

Front 2161

Confined Space Approach

Back 2161

The means of approach to the entry opening of a confined space.

Front 2162

Confined Space Entry

Back 2162

An activity of rescue that takes place in a space that is large enough and so configured that a person can bodily enter and perform assigned work, that has limited restricted means for entry or exit (e.g., tanks, vessels, silos, storage bins, hoppers, vaults, and pits), and that is not designed for continuous occupancy.

Front 2163

Confined Space Entry

Back 2163

Includes ensuing work activities in a confined space and is considered to have occurred as soon as any part of the entrant’s body breaks the plane of an opening into the space.

Front 2164

Confined Space Entry
Opening

Back 2164

The port or opening used to enter a confined space.

Front 2165

Confined Space Entry Permit

Back 2165

A written or printed document established by an employer in applicable U.S. federally regulated industrial facilities for nonrescue entry into confined spaces, that authorizes specific employees to enter a confined space and contains specific information as required. (See Annex C.)

Front 2166

Confined Space Rescue
Preplan

Back 2166

An informational document completed by rescue personnel pertaining to a specific space that should include, but is not limited
to, information concerning hazard abatement requirements, access to the space, size and type of entry openings, internal configuration of the space, and a suggested action plan for rescue of persons injured within the space.

Front 2167

Confined Space Rescue
Service

Back 2167

The confined space rescue team designated by the AHJ to rescue victims from within confined spaces, including operational and technical levels of industrial, municipal, and private sector organizations.

Front 2168

Confined Space Rescue Team

Back 2168

A combination of individuals trained, equipped, and available to respond to confined space emergencies.

Front 2169

Confined Space Rescue Team

Back 2169

A combination of individuals trained, equipped, and available to respond to confined space emergencies. [1670, 2004]

Front 2170

Confined Space Type

Back 2170

A classification of confined spaces that incorporates the size, configuration, and accessibility of an entry opening as well as the internal configuration/entanglement structures within the space.

Front 2171

Confinement

Back 2171

Those procedures taken to keep a material, once released, in a defined or local area.

Front 2172

Connector, Pressure
(Solderless)

Back 2172

A device that establishes a connection between two or more conductors or between one or more conductors and a terminal by means of mechanical pressure and without the use of solder.

Front 2173

Connector Strip

Back 2173

A metal wireway containing pendant or flush receptacles.

Front 2174

Consequence

Back 2174

The outcome of an event, which may be expressed qualitatively or quantitatively.

Front 2175

Conservation

Back 2175

The professional practice of examination, documentation, treatment, and preventative care devoted to the preservation of cultural property.

Front 2176

Console

Back 2176

A unit containing main operative controls of the system.

Front 2177

Constant Current Charge

Back 2177

A charge during which the current is maintained at a constant value.

Front 2178

Constant Gallonage Spray
Nozzle

Back 2178

An adjustable-pattern spray nozzle that discharges a constant discharge rate throughout the range of patterns from a straight stream to a wide spray at a designed nozzle pressure.

Front 2179

Constant-Level Valve

Back 2179

A device for maintaining a constant level of oil fuel within a reservoir for delivery to an oil burner.

Front 2180

Constant Pressure (Automatic) Spray Nozzle

Back 2180

An adjustable-pattern spray nozzle in which the pressure remains relatively constant through a range of discharge rates.

Front 2181

Constant/Select Gallonage
Spray Nozzle

Back 2181

A constant discharge rate spray nozzle with a feature that allows manual adjustment of the orifice to effect a predetermined discharge rate while the nozzle is flowing.

Front 2182

Constant Voltage Charge

Back 2182

A charge during which the voltage across the battery terminals is maintained at a constant value.

Front 2183

Construction

Back 2183

Work or operations necessary or incidental to land clearing, grading, excavation, and filling; or erection, demolition, assembling, installing, or equipping of buildings or structures; or alterations incidental thereto, or to the finished product of construction operations.

Front 2184

Construction Classification
Number

Back 2184

A series of numbers from 0.5 through 1.5 that are mathematical factors used in a formula to determine the total water supply requirements.

Front 2185

Construction Documents

Back 2185

Documents that consist of scaled design drawings and specifications for the purpose of construction of new facilities or modification to existing facilities. (See also 3.3.211, Shop Drawings.)

Front 2186

Construction Documents

Back 2186

The plans and specifications required to be submitted to the authority having jurisdiction for examination prior to issuance of a building permit, including quality assurance plans where required.

Front 2187

Construction Grade Lumber

Back 2187

Lumber products that are readily available in sizes and lengths for general construction applications.

Front 2188

Construction Type

Back 2188

Based on major construction categories, these categories include, but are not limited to, wood frame, steel, unreinforced masonry (URM), tilt-up; precast, high-rise, and formed in place.

Front 2189

Construction Type

Back 2189

The combination of materials used in the construction of a building or structure, based on the varying degrees of fire resistance and combustibility.

Front 2190

Consumer Fireworks, 1.4G

Back 2190

(Formerly known as Class C, Common Fireworks.) Any small fireworks device designed primarily to produce visible effects by combustion that complies with the construction, chemical composition, and labeling regulations of the U.S. Consumer Product Safety Commission, as set forth in 16 CFR, Parts 1500 and 1507. Some small devices designed to produce audible effects are included, such as whistling devices, ground devices containing 0.8 gr (50 mg) or less of explosive composition (salute powder), and aerial devices containing
2 gr (130 mg) or less of explosive composition (salute powder) per explosive unit.

Front 2191

Consumer Fireworks, 1.4G

Back 2191

(Formerly known as Class C, Common Fireworks.) Any small fireworks device designed primarily to produce visible effects by combustion that complies with the construction, chemical composition, and labeling regulations of the U.S. Consumer Product Safety Commission, as set forth in Title 16, CFR, Parts 1500 and 1507. Some small devices designed to produce audible effects are included, such as whistling devices, ground devices containing 0.8 gr (50 mg) or less of explosive composition (salute powder), and aerial devices containing 2 gr (130 mg) or less of explosive composition (salute powder) per explosive unit.

Front 2192

Consumer Fireworks

Back 2192

Small fireworks devices containing restricted amounts of pyrotechnic composition, designed primarily to produce visible or audible effects by combustion, that comply with the construction, chemical composition, and labeling regulations of the U.S. Consumer Product Safety Commission (CPSC), as set forth in CPSC 16 CFR 1500 and
1507, 49 CFR 172, and APA Standard 87-1, Standard for the Construction and Approval for Transportation of Fireworks, Novelties, and Theatrical Pyrotechnics.

Front 2193

Consumer Fireworks

Back 2193

Small fireworks devices containing restricted amounts of pyrotechnic composition, designed primarily to produce visible or audible effects by combustion, that comply with the construction, chemical composition, and labeling regulations of the U.S. Consumer Product Safety Commission (CPSC), as set forth in CPSC 16 CFR 1500 and
1507, 49 CFR 172, and APA Standard 87-1, Standard for the Construction and Approval for Transportation of Fireworks, Novelties, and Theatrical Pyrotechnics. [1124, 2006]

Front 2194

Consumer Fireworks Retail
Sales (CFRS) Area

Back 2194

The portion of a consumer fireworks retail sales facility or store, including the immediately adjacent aisles, where consumer fireworks are located for the purpose of retail display and sale to the public.

Front 2195

Consumer Fireworks Retail
Sales (CFRS) Area

Back 2195

The portion of a consumer fireworks retail sales facility or store, including the immediately adjacent aisles, where consumer fireworks are located for the purpose of retail display and sale to the public. [1124, 2006]

Front 2196

Consumer Fireworks Retail
Sales (CFRS) Stand

Back 2196

A temporary or permanent building or structure that has a floor area not greater than 800 ft2 (74 m2), other than tents, canopies, or membrane structures, that is used primarily for the retail display and sale of consumer fireworks to the public.

Front 2197

Consumer Fireworks Retail
Sales (CFRS) Stand

Back 2197

A temporary or permanent building or structure that has a floor area not greater than 800 ft2 (74 m2), other than tents, canopies, or membrane structures, that is used primarily for the retail display and sale of consumer fireworks to the public. [1124, 2006]

Front 2198

Consumer Fireworks Retail Sales Facility (CFRS Facility)

Back 2198

A permanent or temporary building or structure, CFRS stand, tent, canopy, or membrane structure that is used primarily for the retail display and sale of consumer fireworks to the public.

Front 2199

Consumer Fireworks Retail Sales Facility (CFRS Facility)

Back 2199

A permanent or temporary building or structure, CFRS stand, tent, canopy, or membrane structure that is used primarily for the retail display and sale of consumer fireworks to the public. [1124, 2006]

Front 2200

Consumer Fireworks Storage
Building

Back 2200

A building in which finished consumer fireworks are received, stored, and shipped but in which no manufacturing is performed.

Front 2201

Consumer Fireworks Work
Building, Room, or Area

Back 2201

A building, room, or area where finished consumer fireworks are picked and packaged into retail packages, including assortments and those picked and packed into DOT-approved packaging, and where related operations are performed.

Front 2202

Consumption

Back 2202

The maximum amount of gas per unit of time, usually expressed in cubic feet per hour, or Btu per hour, required for the operation of the appliance or appliances supplied.

Front 2203

Contain

Back 2203

To take suppression action that can reasonably be expected to check the fire spread under prevailing and predicted conditions.

Front 2204

Contain a Fire

Back 2204

To take suppression action as needed that can reasonably be expected to check the fire spread under prevailing conditions.

Front 2205

Container

Back 2205

A container for the plate pack and electrolyte of a cell of a material impervious to attack by the electrolyte.

Front 2206

Container

Back 2206

A low-pressure, vacuum-insulated vessel containing gases in liquid form. (GAS)

Front 2207

Container

Back 2207

Any bag, bottle, carton, can, pressurized container, drum, portable tank, or other closed vessel containing a pesticide.

Front 2208

Container

Back 2208

Any vessel, including cylinders, tanks, portable tanks, and cargo tanks, used for the transporting or storing of LP-Gases.

Front 2209

Container

Back 2209

Any vessel, including cylinders, tanks, portable tanks, and cargo tanks, used for the transporting or storing of LP-Gases. [58, 2008]

Front 2210

Container

Back 2210

Any vessel of 119 gal (450 L) or less capacity used for transporting or storing liquids.

Front 2211

Container

Back 2211

Any vessel of 450 L (119 gal) or less capacity used for transporting or storing liquids. [30, 2003]

Front 2212

Container

Back 2212

Any vessel of 450 L (119 gal) or less capacity used for transporting or storing liquids. [30, 2008]

Front 2213

Container

Back 2213

Any vessel of 450 L (119 gal) or less capacity used for transporting or storing liquids. [30:3.3]

Front 2214

Container

Back 2214

A pressure vessel, cylinder, or cylinder(s) permanently manifolded together used to store CNG, GH2, LNG, or LH2.

Front 2215

Container

Back 2215

A receptacle used for storing or transporting material of any kind.

Front 2216

Container

Back 2216

A reusable, intermodal boxlike structure of rigid construction fitted with devices to permit lifting and handling particularly transfer from one mode of transportation to another mode of transportation.

Front 2217

Container

Back 2217

A vessel for storing liquefied natural gas.

Front 2218

Container

Back 2218

A vessel, including cylinders, tanks, portable tanks, and cargo tanks, used for transporting or storing materials.

Front 2219

Container

Back 2219

A vessel, such as a cylinder, portable tank, or stationary tank, that varies in shape, size, and material of construction.

Front 2220

Container

Back 2220

For purposes of tank entry, cleaning, or repair, a vessel intended to contain an accumulation of hazardous substances that is too small for human entry or has a capacity that can be effectively and safely cleaned without human entry.

Front 2221

Container

Back 2221

For the purpose of handling releases of flammable and combustible liquids and gases, a device that is intended to contain an accumulation of hazardous substances that is too small for human entry or has a capacity that can be effectively and safely cleaned without human entry.

Front 2222

Container

Back 2222

For the purposes of this standard, a cylinder, drum, or other pressure vessel built to DOT, ASME, or other pressure vessel code and used to transport or store ethylene oxide.

Front 2223

Container Appurtenances

Back 2223

Devices connected to container openings for safety, control, or operating purposes.

Front 2224

Container Appurtenances

Back 2224

Devices installed in container openings for safety, control, or operating purposes.

Front 2225

Container Appurtenances

Back 2225

Devices installed in container openings for safety, control, or operating purposes. [58, 2008]

Front 2226

Container Assembly

Back 2226

An assembly consisting of the container and fittings for all container openings such as shutoff valves, excess-flow valves, liquid level gauging devices, pressure relief devices, and protective housings.

Front 2227

Container (Flammable or
Combustible Liquid)

Back 2227

Any vessel of 119 gal (450 L) or less capacity used for transporting or storing liquids. [30, 2008]

Front 2228

Container Freight Station
(CFS)

Back 2228

A transload facility used primarily for loading and unloading cargo from containers.

Front 2229

Containerized Cargo

Back 2229

Commodities stowed and transported in an intermodal freight container.

Front 2230

Container Pressure

Back 2230

Unregulated pressure from a propane container.

Front 2231

Container (Shipping, Master, or Outer Container)

Back 2231

A receptacle strong enough, by reason of material, design, and construction, to be shipped safely without further packaging.

Front 2232

Container Terminal

Back 2232

A terminal that is designed to handle containers that are carried by truck or rail car where transported over land.

Front 2233

Container Valve

Back 2233

A valve connected directly to a container outlet.

Front 2234

Containment

Back 2234

Structures, systems, or components provided to prevent or mitigate the release of radioactive materials.

Front 2235

Containment

Back 2235

The actions taken to keep a material in its container (e.g., stop a release of the material or reduce the amount being released).

Front 2236

Contaminant

Back 2236

A foreign or unwanted substance that can have deleterious effects on system operation, life, or reliability.

Front 2237

Contaminant

Back 2237

A harmful, irritating, or nuisance material foreign to the normal atmosphere. [1404, 2006]

Front 2238

Contaminant

Back 2238

A harmful, irritating, or nuisance material foreign to the normal atmosphere. [1500, 2002]

Front 2239

Contaminant

Back 2239

A hazardous material, or the hazardous component of a weapon of mass destruction (WMD), that physically remains on or in people, animals, the environment, or equipment, thereby creating a continuing risk of direct injury or a risk of exposure.

Front 2240

Contaminated

Back 2240

The presence or the reasonably anticipated presence of blood, body fluids, or other potentially infectious materials on an item or surface.

Front 2241

Contaminated Sharps

Back 2241

Any contaminated object that can penetrate the skin including, but not limited to, needles, lancets, scalpels, broken glass, jagged metal, or other debris.

Front 2242

Contamination

Back 2242

The process of transferring a hazardous material, or the hazardous component of a weapon of mass destruction (WMD), from its source to people, animals, the environment, or equipment, that can act as a carrier.

Front 2243

Contamination/Contaminated

Back 2243

The process by which ensembles and ensemble elements are exposed to hazardous materials, body fluids, or CBRN terrorism agents.

Front 2244

Contamination/Contaminated

Back 2244

The process by which protective clothing or equipment has been exposed to hazardous materials or biological agents.

Front 2245

Contamination/Contaminated

Back 2245

The process of transferring a hazardous material from its source to people, animals, the environment, or equipment, which may act as a carrier.

Front 2246

Contents and Furnishings

Back 2246

Any movable objects in a building for functional, operational, or decorative reasons, excluding parts of the building structure, building service equipment, and items meeting the definition of interior finish.

Front 2247

Contents and Furnishings

Back 2247

Any movable objects in a building that normally are secured or otherwise put in place for functional reasons, excluding (1) parts of the internal structure of the building and (2) any items meeting the definition of interior finish. (See also 3.3.4, Interior Finish.)

Front 2248

Contiguous Property

Back 2248

A single-owner or single-user protected premises on a continuous plot of ground, including any buildings thereon, that is not separated by a
public thoroughfare, transportation right-of-way, property owned or used by others, or body of water not under the same ownership. (SIG-SSS)

Front 2249

Continual

Back 2249

With respect to the testing of a powered rescue tool, a test sequence performed with pauses or interruptions.

Front 2250

Continuous

Back 2250

(As related to data acquisition). Conducted at data collection intervals of
5 seconds or less.

Front 2251

Continuous

Back 2251

With respect to the testing of a powered rescue tool, a test sequence performed without any pauses or interruptions for any purpose.

Front 2252

Continuous Ash Discharge
Underfeed Stoker

Back 2252

A stoker in which the refuse is discharged continuously from the normally stationary stoker ash tray to the ash pit, without the use of mechanical means other than the normal action of the coal feeding and agitating mechanism.

Front 2253

Continuous B-Class Ceiling

Back 2253

A B-Class ceiling that terminates only in an A- or B-Class bulkhead.

Front 2254

Continuous Duty

Back 2254

Operation at a substantially constant load for an indefinitely long time.

Front 2255

Continuous Duty

Back 2255

Operation at a substantially constant load for an indefinitely long time. [70, 2005]

Front 2256

Continuous Egress

Back 2256

A continuous exit or rescue path down an aerial device from an elevated position to the ground.

Front 2257

Continuous Egress

Back 2257

A continuous exit or rescue path down an aerial device from an elevated position to the ground. [1901, 2003]

Front 2258

Continuous Enclosure

Back 2258

A recognized architectural or mechanical component of a building having a fire resistance rating as required for the structure and whose purpose is to enclose the vapor removal duct for its full length to its termination point outside the structure without any portion of the enclosure having a fire resistance rating less than the required value.

Front 2259

Continuous Filament Fiber

Back 2259

Fiber of indefinite or unmeasurable length.

Front 2260

Continuous Furnace

Back 2260

A furnace into which the work charge is more or less continuously introduced.

Front 2261

Continuous Gas Detection
System

Back 2261

A gas detection system in which the instrument is maintained in continuous operation and the interval between sampling of any point does not exceed 30 minutes.

Front 2262

Continuous Gas Detection
System

Back 2262

A gas detection system in which the instrument is maintained in continuous operation and the interval between sampling of any point does not exceed 30 minutes. [55, 2005]

Front 2263

Continuous Gas Detection
System

Back 2263

A gas detection system where the instrument is maintained in continuous operation and the interval between sampling of any point does not exceed 30 minutes.

Front 2264

Continuous Gas Detection
System

Back 2264

A gas detection system where the instrument is maintained in continuous operation and the interval between sampling of any point does not exceed 30 minutes. [5000, 2009]

Front 2265

Continuous Glazing Molding

Back 2265

A continuous molding used to hold glass or glazing in a window.

Front 2266

Continuous Load

Back 2266

A load where the maximum current is expected to continue for 3 hours or more.

Front 2267

Continuously Growing Fires

Back 2267

Fires that, if unchecked, will continue to grow over the design interval time.

Front 2268

Continuous Pilot

Back 2268

A pilot that burns throughout the entire period that the heating equipment is in service, regardless of whether the main burner is firing.

Front 2269

Continuous Trend Display

Back 2269

A dedicated visual display of an operating trend(s) by any instrument such as a cathode ray tube (CRT), chart recorder, or other device to quantify changes in the measured variable(s).

Front 2270

Continuous Vapor
Concentration Controller

Back 2270

A device that measures, indicates, and directly or indirectly controls the concentration of a flammable vapor-air mixture as expressed in percentage of the lower explosive limit (LEL).

Front 2271

Continuous Vapor Concentration High-Limit Controller

Back 2271

A device designed to initiate reduction of the vapor concentration if the concentration exceeds a predetermined set point.

Front 2272

Continuous Vent

Back 2272

A vertical vent that is a continuation of the drain to which it connects.

Front 2273

Continuous Waste

Back 2273

A drain connecting the compartments of a set of fixtures to a trap or connecting other permitted fixtures to a common trap.

Front 2274

Continuous Wave (cw)

Back 2274

The output of a laser operated in a continuous rather than a pulsed mode.

Front 2275

Continuous Weld

Back 2275

A metal-joining method that produces a product without visible interruption or variation in quality.

Front 2276

Contract Cleaning

Back 2276

Cleaning conducted by a facility outside the organization that specializes in cleaning protective clothing.

Front 2277

Contract Employer

Back 2277

An employer, such as a welder, burner, grinder, painter, or other subcontractor, who performs work under contract to the host employer or to another employer under contract to the host employer at the host employer’s work site.

Front 2278

Contractor

Back 2278

One who contracts on predetermined terms to provide labor and materials and who is responsible for performance of a construction job in accordance with construction documents.

Front 2279

Contractor

Back 2279

One who contracts on predetermined terms to provide labor and materials and who is responsible for performance of a construction job in accordance with construction documents. [5000, 2009]

Front 2280

Contractor

Back 2280

The person or company responsible for fulfilling an agreed upon contract.

Front 2281

Contractor

Back 2281

The person or company responsible for fulfilling an agreed-upon contract. [1901, 2003]

Front 2282

Control

Back 2282

Limit, affect, or alter the referenced factor(s).

Front 2283

Control

Back 2283

The point in time when the perimeter spread of a wildland fire has been halted and can be reasonably expected to hold under foreseeable conditions.

Front 2284

Control

Back 2284

The procedures, techniques, and methods used in the mitigation of hazardous material/weapons of mass destruction (WMD) incidents, including containment, extinguishment, and confinement.

Front 2285

Control Area

Back 2285

A building or portion of a building within which flammable and combustible liquids are allowed to be stored, dispensed, and used or handled in quantities that do not exceed the maximum allowable quantity (MAQ). [5000, 2006] (See also 3.3.34, Maximum Allowable Quantity.)

Front 2286

Control Area

Back 2286

A building or portion of a building within which hazardous materials are allowed to be stored, dispensed, used, or handled in quantities not exceeding the maximum allowable quantities (MAQ).

Front 2287

Control Area

Back 2287

A building or portion of a building within which hazardous materials are allowed to be stored, dispensed, used, or handled in quantities not exceeding the maximum allowable quantities (MAQ). [5000, 2006]

Front 2288

Control Area

Back 2288

A designated area, either indoors or outdoors, within which hazardous materials are allowed to be stored, used, handled, or dispensed in quantities not exceeding the maximum allowable quantity (MAQ).

Front 2289

Control Area

Back 2289

A designated area, either indoors or outdoors, within which limited quantities of hazardous materials are allowed to be stored, used, handled, or dispensed.

Front 2290

Control Area

Back 2290

An area within a building for storage and use of high-hazard materials.

Front 2291

Control Chemical Composition of Environment

Back 2291

Limit the quantity of oxidizer available for combustion or inhibit the chemical combustion process.

Front 2292

Control Circuit

Back 2292

For the purposes of this article, the circuit of a control system that carries the electrical signals directing the performance of the controller but does not carry the main power current.

Front 2293

Control Circuit

Back 2293

The circuit of a control apparatus or system that carries the electric signals directing the performance of the controller but does not carry the main power current.

Front 2294

Control Circuit (of a machine)

Back 2294

The circuit of a control apparatus or system that carries the electric signals directing the performance of the controller but does not carry the main power current.

Front 2295

Control Circuit Transformer

Back 2295

A voltage transformer utilized to supply a voltage suitable for the operation of control devices.

Front 2296

Control Circuit Voltage

Back 2296

The voltage utilized for the operation of control devices.

Front 2297

Control Combustion Process

Back 2297

Control the inherent fire behavior.

Front 2298

Control Console

Back 2298

A wall-mounted or desk-top panel or cabinet containing controls to operate communications equipment.

Front 2299

Control Device

Back 2299

A device connected into the control circuit and used for controlling the operation of the machine (e.g., position sensor, manual control switch, relay, magnetically operated valve).

Front 2300

Control Drawing

Back 2300

A drawing or other document provided by the manufacturer of the intrinsically safe or associated apparatus, or of the nonincendive field wiring apparatus or associated nonincendive field wiring apparatus, that details the allowed interconnections between the intrinsically safe and associated apparatus or between the nonincendive field wiring apparatus or associated nonincendive field wiring apparatus.

Front 2301

Control Equipment

Back 2301

Operating elements, such as relays, contactors, circuit breakers, switches, solenoids, brakes, and similar types of components, intended to govern or perform a given function in the operation, including measuring, sensing, monitoring, protecting, and regulating of machinery.

Front 2302

Control Fire by Construction

Back 2302

Control the growth of the fire and the movement of fire products by performing actions involving building construction features and
built-in equipment without intentionally acting upon the inherent fire
process.

Front 2303

Control Fuel Distribution

Back 2303

Control the arrangement of the fuel within its environment.

Front 2304

Control Fuel Ignitibility

Back 2304

Control the ease of ignition of fuels that are present.

Front 2305

Control Fuel (Manage Fire)

Back 2305

Influence the combustion process by pre-ignition control of the inherent or situational characteristics of the fuel.

Front 2306

Control Fuel (Prevent Fire
Ignition)

Back 2306

Limit the characteristics and uses of fuel(s).

Front 2307

Control Fuel Properties

Back 2307

Control the inherent properties of the fuel.

Front 2308

Control Fuel Transport

Back 2308

Prevent the fuel from moving to a location where ignition can result.

Front 2309

Control Heat-Energy Sources

Back 2309

Limit the characteristics and uses of heat-energy sources.

Front 2310

Control Heat-Energy Source
Transport

Back 2310

Prevent the heat-energy source from moving to a location where an ignition can result.

Front 2311

Control Heat-Energy Transfer
Processes

Back 2311

Alter the rate(s) at which the fuel(s) receives heat by control of the heat transfer mechanisms, such that ignition cannot result.

Front 2312

Controllable Emergency

Back 2312

An emergency where operator action can minimize harm to people or property.

Front 2313

Controlled Area

Back 2313

Any area that is more than 15 m (50 ft) but less than 30 m (100 ft)
from the solvent extraction process, measured horizontally.

Front 2314

Controlled Area

Back 2314

A room, office, building, or facility to which access is monitored, limited, or controlled.

Front 2315

Controlled Atmosphere (CA) Warehouse

Back 2315

A facility for storing specialty products, such as fruits, that generally includes sealed storage rooms, with controlled temperature and air content, the most common being an atmosphere containing a high percentage of a gas such as nitrogen.

Front 2316

Controlled Stop

Back 2316

The stopping of machine motion, while retaining power to the machine actuators during the stopping process.

Front 2317

Controller

Back 2317

A control unit used to provide the logic in an access control system.

Front 2318

Controller

Back 2318

A device or group of devices that serves to govern, in some predetermined manner, the electric power delivered to the apparatus to which it is connected.

Front 2319

Controller

Back 2319

A device or group of devices that serves to govern, in some predetermined manner, the electric power delivered to the apparatus to which it is connected. [70:100]

Front 2320

Controller

Back 2320

A device or group of devices that serves to govern, in some predetermined manner, the electric power delivered to the apparatus to which it is connected. [70, 2008]

Front 2321

Controller

Back 2321

For the purpose of this article, a controller is any switch or device that is normally used to start and stop a motor by making and breaking the motor circuit current.

Front 2322

Controller, Motion

Back 2322

The electrical device(s) for that part of the control system that governs the acceleration, speed, retardation, and stopping of the moving member.

Front 2323

Controller, Motor

Back 2323

The operative units of the control system comprised of the starter device(s) and power conversion equipment used to drive an electric motor, or the pumping unit used to power hydraulic control equipment.

Front 2324

Controller, Operation

Back 2324

The electrical device(s) for that part of the control system that
initiates the starting, stopping, and direction of motion in response to
a signal from an operating device.

Front 2325

Control Line

Back 2325

All constructed or natural barriers and the treated fire edge used to control a fire.

Front 2326

Control Movement of Fire

Back 2326

Control the movement of fire or fire products, or both, by providing and (where a normal functional necessity) activating building construction features and built-in equipment.

Front 2327

Control of Burning

Back 2327

Application of water spray to equipment or areas where a fire can occur to control the rate of burning and thereby limit the heat release from a fire until the fuel can be eliminated or extinguishment effected.

Front 2328

Control Physical Properties of
Environment

Back 2328

Interfere in the combustion process through a heat transfer process.

Front 2329

Control Piping

Back 2329

All piping, valves, and fittings used to interconnect air, gas, or hydraulically operated control apparatus or instrument transmitters and receivers.

Front 2330

Control Rate of Heat-Energy
Release

Back 2330

Control the rate of thermal energy release of existing heat-energy sources.

Front 2331

Control Room

Back 2331

A room with instrumentation and devices to control, measure, record, or observe test cell and engine operation and performance.

Front 2332

Control Room and Electronic
Equipment Space

Back 2332

A space containing electronic or electrical equipment, such as that found in control rooms or electronic equipment rooms, where only Class A surface fires or Class C electrical hazards are present.

Front 2333

Control Room (for Elevator, Dumbwaiter)

Back 2333

An enclosed control space outside the hoistway, intended for full bodily entry, that contains the elevator motor controller. The room could also contain electrical and/or mechanical equipment used directly in connection with the elevator or dumbwaiter but not the electric driving machine or the hydraulic machine.

Front 2334

Controls

Back 2334

Devices designed to regulate the gas, air, water, or electrical supply to an appliance. These may be manual or automatic.

Front 2335

Control Source-Fuel
Interactions

Back 2335

Control the relationships of source and fuel so as to limit the heat communicated from the source to the fuel in order that fuel temperature remains below that required for ignition.

Front 2336

Control Space

Back 2336

Space on a marine vessel in which the vessel’s radio, the main navigation equipment, or the emergency source of power is located or in which the fire control equipment, other than fire-fighting control equipment, is centralized.

Front 2337

Control Space (for Elevator, Dumbwaiter)

Back 2337

A space inside or outside the hoistway, intended to be accessed with or without full bodily entry, that contains the elevator motor controller. This space could also contain electrical and/or mechanical equipment used directly in connection with the elevator or dumbwaiter but not the electrical driving machine or the hydraulic machine.

Front 2338

Control System

Back 2338

The overall system governing the starting, stopping, direction of motion, acceleration, speed, and retardation of the moving member.

Front 2339

Control the Environment

Back 2339

Control the inherent or situational characteristics of the environment.

Front 2340

Control Unit

Back 2340

A system component that monitors inputs and controls outputs through various types of circuits. [72, 2007]

Front 2341

Control Unit

Back 2341

A system component that monitors inputs and controls outputs through various types of circuits. (See also 3.3.64, Fire Alarm Control Unit.) (SIG-PRO)

Front 2342

Control Valve

Back 2342

An indicating valve employed to control (shut) a supply of water to a sprinkler system.

Front 2343

Control Valve

Back 2343

A valve controlling flow to water-based fire protection systems. Control valves do not include hose valves, inspector’s test valves, drain valves, trim valves for dry pipe, preaction and deluge valves, check valves, or relief valves.

Front 2344

Control Zones

Back 2344

The areas at an incident that are designated based upon safety and the degree of hazard.

Front 2345

Control Zones

Back 2345

The areas at an incident that are designated based upon safety and the degree of hazard. [1500, 2007]

Front 2346

Control Zones

Back 2346

The areas at an incident that are designated based upon safety and the degree of hazard to the fire fighter.

Front 2347

Control Zones

Back 2347

The areas at hazardous materials/weapons of mass destruction incidents within an established/a controlled perimeter that are designated based upon safety and the degree of hazard.

Front 2348

Convection

Back 2348

Heat transfer by circulation within a medium such as a gas or a liquid.

Front 2349

Convection

Back 2349

Transfer of heat by bulk motion of a fluid induced by mechanical devices or by gravitational effects due to nonuniform temperatures in the fluid.

Front 2350

Convenient Reach

Back 2350

In marine fire-fighting vessels, the ability to operate controls without excessive movement from a fixed position such as a seat or safety harness.

Front 2351

Convenient Reach

Back 2351

The ability of the operator to manipulate the controls from a driving/riding position without excessive movement away from the seat back or without excessive loss of eye contact with the roadway.

Front 2352

Convenient Reach

Back 2352

The ability of the operator to manipulate the controls from a driving/riding position without excessive movement away from the seat back or without excessive loss of eye contact with the roadway. [1901, 2003]

Front 2353

Conventional Pallets

Back 2353

A material-handling aid designed to support a unit load with openings to provide access for material-handling devices. (See Figure A.3.3.68.) [13, 2007]

Front 2354

Conventional Pallets

Back 2354

A material-handling aid designed to support a unit load with openings to provide access for material-handling devices. (See Figure A.3.9.1.7.)

Front 2355

Conventional Pin Rack

Back 2355

A hose rack where the hose is folded vertically and attached over the pins.

Front 2356

Conventional Radio

Back 2356

A radio system in which automatic computer control of channel assignments is not required or used, system-managed queuing of calls is not provided, and channels are selected manually by the users.

Front 2357

Conversion

Back 2357

Any modification(s) made to a new, existing, or used drycleaning machine, drying tumbler, or reclaiming tumbler that allows the use of a solvent of a different class as specified on the original manufacturers’ nameplate. (See Annex B, Guidance on Conversions.)

Front 2358

Converter

Back 2358

A device that changes electrical energy from one form to another, as from alternating current to direct current.

Front 2359

Converting Device

Back 2359

That part of the heating equipment that converts input mechanical or electrical energy to the voltage, current, and frequency suitable for the heating applicator. A converting device shall consist of equipment using mains frequency, all static multipliers, oscillator-type units using vacuum tubes, inverters using solid-state devices, or motor generator equipment.

Front 2360

Conveyor

Back 2360

Equipment that transports material from one point to another either pneumatically or mechanically, by means of a moving belt, a chain, buckets, or flights.

Front 2361

Cooking Appliance, Floor-Mounted Restaurant-Type

Back 2361

A range, oven, broiler, or other miscellaneous cooking appliance, designated for use in hotel and restaurant kitchens and for mounting on the floor. [211, 2006]

Front 2362

Cooking Fire

Back 2362

The noncommercial, residential burning of materials not exceeding 3 ft (0.9 m) in diameter and 2 ft (0.6 m) in height, other than rubbish in which the fuel burned is contained in an outdoor fireplace, a barbecue grill, or a barbecue pit for the purpose of preparing food.

Front 2363

Cooking Unit, Counter-Mounted

Back 2363

A cooking appliance designed for mounting in or on a counter and consisting of one or more heating elements, internal wiring, and built-in or mountable controls.

Front 2364

Coolant

Back 2364

A heat-absorbing medium or process.

Front 2365

Cooling Preheater Device

Back 2365

A device for heating the engine coolant so that the engine is maintained at a constant temperature.

Front 2366

Cooperating Agency

Back 2366

An agency supplying assistance other than direct suppression, rescue, support, or service functions to the incident management efforts (Red Cross, law enforcement agency, telephone company, etc.).

Front 2367

Coordinated Universal Time

Back 2367

A coordinated time scale, maintained by the Bureau Interntionale des Poids et Mesures (BIPM), which forms the basis of a coordinated dissemination of standard frequencies and time signals.

Front 2368

Coordination

Back 2368

The process used to get people, who could represent different agencies, to work together integrally and harmoniously in a common action or effort.

Front 2369

Coordination (Selective)

Back 2369

Localization of an overcurrent condition to restrict outages to the circuit or equipment affected, accomplished by the choice of overcurrent protective devices and their ratings or settings.

Front 2370

Coordination (Selective)

Back 2370

Localization of an overcurrent condition to restrict outages to the circuit or equipment affected, accomplished by the choice of overcurrent protective devices and their ratings or settings.
[70, 2005]

Front 2371

Coordination (Selective)

Back 2371

Localization of an overcurrent condition to restrict outages to the circuit or equipment affected, accomplished by the choice of overcurrent protective devices and their ratings or settings.
[70, 2008]

Front 2372

Coordination Study

Back 2372

A system planning process used to assist in selecting and setting protective devices to improve power system reliability.

Front 2373

Coordinator

Back 2373

A device used on pairs of swinging doors that prevents the active leaf from closing before the inactive leaf closes.

Front 2374

Copper-Clad Aluminum
Conductors

Back 2374

Conductors drawn from a copper-clad aluminum rod with the copper metallurgically bonded to an aluminum core. The copper forms a minimum of 10 percent of the cross-sectional area of a solid conductor or each strand of a stranded conductor.

Front 2375

Copper-Clad Steel

Back 2375

Steel with a coating of copper bonded to it.

Front 2376

Corbel

Back 2376

Units of masonry projecting from or projecting upward and outward from the face of a wall or chimney in courses to form a support or ledge for a beam, rafter, or other member.

Front 2377

Cord

Back 2377

Two or more flexible insulated conductors enclosed in a flexible covering that provides mechanical protection.

Front 2378

Cord-and-Plug-Connected
Lighting Assembly

Back 2378

A lighting assembly consisting of a luminaire intended for installation in the wall of a spa, hot tub, or storable pool, and a
cord-and-plug-connected transformer.

Front 2379

Cord Connector

Back 2379

A device that, by inserting it into a truck flanged surface inlet, establishes an electrical connection to the truck for the purpose of providing power for the on-board electric loads and may provide a means for information exchange. This device is part of the truck coupler.

Front 2380

Cordwood

Back 2380

Logs 8 ft (2.4 m) or less in length customarily intended for pulpwood or fuel uses.

Front 2381

Core

Back 2381

The central tube around which paper is wound to form a roll.

Front 2382

Core

Back 2382

The central tube around which paper is wound to form a roll. [13, 2007]

Front 2383

Core Body Temperature

Back 2383

The temperature deep within a living body.

Front 2384

Core Competencies

Back 2384

The knowledge, skills, and judgment needed by operations level responders who can respond to releases or potential releases of hazardous materials/WMD.

Front 2385

Core Competencies

Back 2385

The knowledge, skills, and judgment needed by operations level responders who respond to releases or potential releases of hazardous materials/weapons of mass destruction (WMD).

Front 2386

Corona

Back 2386

An electrical discharge phenomenon occurring in gaseous substances, such as air.

Front 2387

Coronal Plane

Back 2387

The anatomical plane perpendicular to both the basic and midsagittal planes and containing the midpoint of a line connecting the superior rims of the right and left auditory meatuses.

Front 2388

Corrective Lens

Back 2388

A lens designed to fit the specifications of the wearer’s individual corrective prescription.

Front 2389

Corridor

Back 2389

An enclosed space connecting a room or compartment with an exit that includes normal extensions, such as lobbies and other enlarged spaces.

Front 2390

Corrosion

Back 2390

A condition exhibiting any signs of deterioration, including pitting or loss of metal.

Front 2391

Corrosion Resistance

Back 2391

The ability of a material to withstand deterioration of its surface or its properties when exposed to its environment.

Front 2392

Corrosion-Resistant Material

Back 2392

Materials such as brass, copper, Monel, stainless steel, or other equivalent corrosion-resistant materials.

Front 2393

Corrosion Resistant Piping

Back 2393

Piping that has the property of being able to withstand deterioration of its surface or its properties when exposed to its environment.

Front 2394

Corrosion Resistant Piping

Back 2394

Piping that has the property of being able to withstand deterioration of its surface or its properties when exposed to its environment. [24,
2007]

Front 2395

Corrosion-Resistant Sprinkler

Back 2395

A sprinkler fabricated with corrosion-resistant material, or with special coatings or platings, to be used in an atmosphere that would normally corrode sprinklers.

Front 2396

Corrosion-Resistant Sprinkler

Back 2396

A sprinkler fabricated with corrosion-resistant material, or with special coatings or platings, to be used in an atmosphere that would normally corrode sprinklers. [13, 2007]

Front 2397

Corrosion Retardant Material

Back 2397

A lining or coating material that when applied to piping or appurtenances has the property of reducing or slowing the deterioration of the object’s surface or properties when exposed to its environment.

Front 2398

Corrosion Retardant Material

Back 2398

A lining or coating material that when applied to piping or appurtenances has the property of reducing or slowing the deterioration of the object’s surface or properties when exposed to its environment. [24, 2007]

Front 2399

Corrosive

Back 2399

A chemical that causes visible destruction of, or irreversible alterations in, materials by chemical action at the site of contact.

Front 2400

Corrosive Gas

Back 2400

A gas that causes visible destruction of or irreversible alterations in living tissue by chemical action at the site of contact.

Front 2401

Corrosive Gas

Back 2401

A gas that causes visible destruction of or irreversible alterations in living tissue by chemical action at the site of contact. [55, 2005]

Front 2402

Corrosive Material

Back 2402

A chemical that causes visible destruction of, or irreversible alterations in, living tissue by chemical action at the site of contact.

Front 2403

Cost Unit

Back 2403

Functional unit within the finance/administration section responsible for tracking costs, analyzing cost data, making cost estimates, and recommending cost-saving measures.

Front 2404

COTP

Back 2404

United States Coast Guard Captain of the Port.

Front 2405

Counter Appliance (Gas)

Back 2405

Appliances such as gas-operated coffee brewers and coffee urns and any appurtenant water-heating equipment, food and dish warmers, hot plates, and griddles.

Front 2406

Counterbalancing

Back 2406

A method by which the hanging weight of the door is balanced by helical torsion springs or weights.

Front 2407

Counterflow

Back 2407

A cooling tower classification in which the water flows countercurrent to the airflow.

Front 2408

Counterpoise

Back 2408

A conductor or system of conductors arranged beneath the transmission/distribution supply line; located on, above, or most frequently below the surface of the earth; and connected to the grounding system of the towers or poles supporting the line. (This conductor(s) might or might not be the continuous length of the supply path. It is often used to provide a lower surge impedance path to earth for lightning protection when there is a transition from overhead supply conductors to underground insulated cable.) Counterpoise is also used in communication systems, where it is a system of conductors, physically
elevated above and insulated from the ground, forming a lower system of conductors of an antenna. Note that the purpose of a counterpoise is to provide a relatively high capacitance and thus a relatively low impedance path to earth. The counterpoise is sometimes used in medium- and low- frequency applications where it would be more difficult to provide an effective ground connection. Sometimes counterpoise is confused with equipotential plane. See also 3.3.26, Equipotential Plane.

Front 2409

Coupled Water-Motor Pump

Back 2409

A correctly designed positive displacement pump in the water supply line coupled to a second, smaller, positive displacement foam concentrate pump to provide proportioning.

Front 2410

Coupling Assembly

Back 2410

A complete coupling including its gaskets and the expansion rings or collar pieces used in attaching the coupling to the hose.

Front 2411

Couplings

Back 2411

One set or pair of connection devices attached to a fire hose that allow the hose to be interconnected to additional lengths of hose or adapters and other fire-fighting appliances.

Front 2412

Court

Back 2412

An open, uncovered, unoccupied space, unobstructed to the sky, bounded on three or more sides by exterior building walls.

Front 2413

Court

Back 2413

An open, uncovered, unoccupied space, unobstructed to the sky, bounded on three or more sides by exterior building walls.
[101, 2003]

Front 2414

Cover

Back 2414

An additional layer on the outside of a hose consisting of a continuous synthetic rubber or plastic that is usually thicker than a coating.

Front 2415

Covered Fuse

Back 2415

A fuse or designed point of ignition that is protected against accidental ignition by contact with a spark, smoldering items, or small open flame.

Front 2416

Covered Fuse

Back 2416

A fuse or designed point of ignition that is protected against accidental ignition by contact with a spark, smoldering items, or small open flame. [1124, 2006]

Front 2417

Covered Hose

Back 2417

A hose with a jacket covered and lined with a continuous synthetic rubber or plastic. The cover is usually thicker than a coating.

Front 2418

Covered Mall

Back 2418

A single building enclosing a number of tenants and occupancies wherein two or more tenants have a main entrance into one or more malls.

Front 2419

Covered Mall Building

Back 2419

A building, including the covered mall, enclosing a number of tenants and occupancies, such as retail stores, drinking and dining establishments, entertainment and amusement facilities, offices, and other similar uses, wherein two or more tenants have a main entrance into the covered mall. [101B:3.3]

Front 2420

Covered Pier

Back 2420

A fixed or floating pier that is provided with a roof system to protect berthed boats from the weather.

Front 2421

Covered Storage

Back 2421

A structure or building capable of receiving and storing boats for extended periods of time while protecting the boats from exposure to the weather.

Front 2422

Cover Plate

Back 2422

A plate to cover the joint between the sections of multiple panel doors, usually applied to the front and back of the vertical or horizontal slide door.

Front 2423

Cracking Pressure

Back 2423

The pressure at which the suit exhaust valve begins to open, releasing exhaust air to the outside suit environment.

Front 2424

Crane

Back 2424

A mechanical device used for lifting or moving boats.

Front 2425

Craze

Back 2425

The appearance of fine cracks in the surface of a helmet shell or other smooth surface of an ensemble element.

Front 2426

Create

Back 2426

Design original educational or informational resource materials.

Front 2427

Creep

Back 2427

The tendency of a material to move or deform permanently to relieve stresses.

Front 2428

Creep

Back 2428

Unintended movement.

Front 2429

Crew

Back 2429

An organized group of fire fighters under the leadership of a crew leader or other designated official.

Front 2430

Crew

Back 2430

Anyone associated with the onboard operation of the vessel.

Front 2431

Crew

Back 2431

A team of two or more fire fighters.

Front 2432

Crew

Back 2432

A team of two or more fire fighters. [1500, 2007]

Front 2433

Crew Boss (Leader)

Back 2433

A person who is in supervisory charge of usually 10 to 20 fire fighters and who is responsible for their performance, safety, and welfare.

Front 2434

Cribbing

Back 2434

Short lengths of timber/composite materials, usually 101.60 mm
× 101.60 mm (4 in. × 4 in.) and 457.20 mm × 609.60 mm (18 in. × 24 in.)
long that are used in various configurations to stabilize loads in place or
while load is moving.

Front 2435

Cripple Wall

Back 2435

Short stud wall, less than 8 ft (2.4 m) in height, between the foundation and the lowest framed floors with studs not less than 14 in. (35 mm) long — also known as a knee wall. Cripple walls can occur in both engineered structures and conventional construction.
[ASCE/SEI 7:11.2]

Front 2436

Critical Angle

Back 2436

An angle of 120 degrees or less created between two rope rescue system components wide enough so as to create excessive force on the anchor points to which they are attached.

Front 2437

Critical Area

Back 2437

The area calculated to be one-half the overall length of the helicopter multiplied by three times the width of the widest portion of the fuselage.

Front 2438

Critical Branch

Back 2438

A subsystem of the emergency system consisting of feeders and branch circuits supplying energy to task illumination, special power circuits, and selected receptacles serving areas and functions related to patient care and that are connected to alternate power sources by one or
more transfer switches during interruption of normal power source. [99:3.3.26]

Front 2439

Critical Branch

Back 2439

A subsystem of the emergency system consisting of feeders and branch circuits supplying energy to task illumination, special power circuits, and selected receptacles serving areas and functions related to patient care and that are connected to alternate power sources by one or
more transfer switches during interruption of normal power source. (ELS)

Front 2440

Critical Care Areas

Back 2440

Those special care units, intensive care units, coronary care units, angiography laboratories, cardiac catheterization laboratories, delivery rooms, operating rooms, postanesthesia recovery rooms, emergency departments, and similar areas in which patients are intended to be subjected to invasive procedures and connected to line-operated, patient-care-related electrical appliances.

Front 2441

Critical Equipment

Back 2441

That equipment essential to the safety of the occupants of the facility. [99, 2005 (HYP)]

Front 2442

Critical Equipment

Back 2442

That equipment essential to the safety of the occupants of the facility. (HYP)

Front 2443

Critical Heat Flux (CHF)

Back 2443

The minimum heat flux at or below which there is no ignition.

Front 2444

Critical Incident Stress

Back 2444

An unusual or traumatic event that creates or might create stress or other adverse condition for persons who have been exposed to the event but who have not necessarily incurred bodily injury from the event.

Front 2445

Critical Incident Stress
Debriefing (CISD)

Back 2445

A post-incident meeting designed to assist rescue personnel in dealing with psychological trauma as the result of an emergency.

Front 2446

Critical Incident Stress
Management (CISM)

Back 2446

A program designed to reduce acute and chronic effects of stress related to job functions.

Front 2447

Criticality

Back 2447

The state of sustaining a chain reaction, as in a nuclear reactor.

Front 2448

Criticality Incident

Back 2448

An accidental, self-sustained nuclear fission chain reaction.

Front 2449

Critical Operations Power
Systems (COPS)

Back 2449

Power systems for facilities or parts of facilities that require continuous operation for the reasons of public safety, emergency management, national security, or business continuity.

Front 2450

Critical Process

Back 2450

A process that has the potential to cause harm to personnel, equipment, structures, or product in the event of an uncontrolled failure.

Front 2451

Critical Radiant Flux

Back 2451

The level of incident radiant heat energy in units of W/cm2 on a floor covering system at the most distant flameout point.

Front 2452

Critical Radiant Flux

Back 2452

The level of incident radiant heat energy in units of W/cm2 on a floor covering system at the most distant flameout point.
[253, 2006]

Front 2453

Critical Radiant Flux

Back 2453

The level of incident radiant heat energy on a floor-covering system at the most distant flameout point.

Front 2454

Critical Rescue and
Fire-Fighting Access Area

Back 2454

The rectangular area surrounding any runway within which most aircraft accidents can be expected to occur on airports. Its width extends 150 m (500 ft) from each side of the runway centerline, and its length is 1000 m (3300 ft) beyond each runway end.

Front 2455

Critical Rescue and
Fire-Fighting Access Area

Back 2455

The rectangular area surrounding any runway within which most aircraft accidents can be expected to occur on airports. Its width extends 150 m (500 ft) from each side of the runway centerline, and its length is 1000 m (3300 ft) beyond each runway end.
[403, 2003]

Front 2456

Critical Rescue and
Fire-Fighting Access Area

Back 2456

The rectangular area that surrounds a runway within which aircraft movements can be expected to occur on airports and whose width extends 150 m (500 ft) from each side of the runway centerline and whose length is 1000 m (3300 ft) beyond each runway threshold. [403:3.3]

Front 2457

Critical Rescue and
Fire-Fighting Access Area
(CRFFAA)

Back 2457

The rectangular area surrounding any runway within which most aircraft accidents can be expected to occur on airports. (See Figure A.3.3.11.3.)

Front 2458

Critical System

Back 2458

A system of feeders and branch circuits in nursing homes and custodial care facilities arranged for connection to the alternate power source to restore service to certain critical receptacles, task illumination, and equipment. (ELS)

Front 2459

Critical Velocity

Back 2459

The minimum steady-state velocity of the ventilation airflow moving toward the fire within a tunnel or passageway that is required to prevent backlayering at the fire site.

Front 2460

Critique

Back 2460

A post-incident analysis of the effectiveness of the rescue effort.

Front 2461

Cross Braces (or Struts)

Back 2461

The individual horizontal members of a shoring system installed perpendicular to the sides of the excavation, the ends of which bear against either uprights or wales.

Front 2462

Cross Connection

Back 2462

Any physical connection or arrangement between two otherwise separate systems or sources, one of which contains potable water and the other, either water, steam, gas, or chemical of unknown or questionable safety, whereby there may be a flow from one system or source to the other, the direction of flow depending on the pressure differential between the two systems.

Front 2463

Cross Contamination

Back 2463

The process by which a contaminant is carried out of the hot zone and contaminates people, animals, the environment, or equipment.

Front 2464

Cross-Contamination

Back 2464

The transfer of contamination from one item to another or to the environment.

Front 2465

Crossflow

Back 2465

A cooling tower classification in which the airflow is essentially perpendicular to the flow of water.

Front 2466

Cross Mains

Back 2466

The pipes supplying the branch lines, either directly or through risers.

Front 2467

Crossovers

Back 2467

Utility connections in multisection homes that are located where the sections are joined.

Front 2468

Cross Slope (Accessibility)

Back 2468

The slope that is perpendicular to the direction of travel.

Front 2469

Cross-Trained/Dual Role
(CT/DR)

Back 2469

An emergency service that allows personnel trained in two service functions, such as fire suppression and emergency medical care, to function in either role.

Front 2470

Crown

Back 2470

A sloped covering for the top of a masonry chimney that is designed to shed water away from the flue liner and the chimney and to allow expansion and movement of the flue liner.

Front 2471

Crown

Back 2471

The portion of the helmet that covers the head above the reference plane.

Front 2472

Crown Straps

Back 2472

The part of the helmet suspension that passes over the head.

Front 2473

Crude Petroleum

Back 2473

Hydrocarbon mixtures that have a flash point below 150°F (65.6°C)
and that have not been processed in a refinery.

Front 2474

Crude Petroleum

Back 2474

Hydrocarbon mixtures that have a flash point below 150°F (65.6°C)
and that have not been processed in a refinery. [30, 2008]

Front 2475

Crusher

Back 2475

A device for reducing the size of solid fuels.

Front 2476

Crush Plates

Back 2476

Bearing plates provided where doors are mounted on concrete masonry wall units with hollow cells to accommodate through-wall bolts to prevent crushing of the hollow concrete masonry unit.

Front 2477

Crush Syndrome

Back 2477

A condition in which muscle death occurs because of pressure applied by an external load (e.g., a vehicle, parts of a fallen building, a rock,
or a squeeze in a tight hole).

Front 2478

Cryogenic Fluid

Back 2478

A fluid produced or stored at very low temperatures.

Front 2479

Cryogenic Fluid

Back 2479

A fluid with a boiling point lower than -130°F (-90°C) at an absolute pressure of 14.7 psia (101.325 kPa).

Front 2480

Cryogenic Fluid

Back 2480

A fluid with a boiling point lower than -130°F (-90°C) at an absolute pressure of 14.7 psia (101.325 kPa). [55, 2005]

Front 2481

Cryogenic Fluid

Back 2481

A fluid with a boiling point lower than -90°C (-130°F) at an absolute pressure of 101.325 kPa (14.7 psi). [55, 2005]

Front 2482

Cryogenic Fluid

Back 2482

A fluid with a boiling point lower than -90°C (-130°F) at an absolute pressure of 101.325 kPa (14.7 psia).

Front 2483

Cryogenic Fluid

Back 2483

Substance that exists only in the vapor phase above -73°C (-99°F) at one atmosphere pressure and that is handled, stored, and used in the liquid state at temperatures at or below -73°C (-99°F) while at any pressure.

Front 2484

Cryogenic Fluids Container

Back 2484

A cryogenic vessel used for transportation, handling, or storage.

Front 2485

Cryogenic Gas

Back 2485

A refrigerated liquid gas having a boiling point below -130°F (-90°C)
at atmospheric pressure.

Front 2486

Cryogenic Liquid

Back 2486

A fluid with a boiling point lower than -90°C (-130°F) at an absolute pressure of 101.325 kPa (14.7 psi). [55, 2005]

Front 2487

Cryogenic Liquid

Back 2487

A refrigerated liquefied gas having a boiling point below -130°F (-90°C) at atmospheric pressure.

Front 2488

Cryogenic Liquid

Back 2488

A refrigerated liquefied gas having a boiling point below -130°F (-90°C) at atmospheric pressure. [1991, 2005]

Front 2489

Cryogenic Liquid

Back 2489

A refrigerated liquefied gas having a boiling point below -90°C (-130°F) at atmospheric pressure.

Front 2490

Ct Product

Back 2490

The concentration-time product (µL/L/min) obtained by the integration of the area under a concentration-time curve.

Front 2491

Cubic Foot (ft3) of Gas

Back 2491

. The amount of gas that would occupy 1 ft3 (0.03 m3) when at a temperature of 60°F (16°C), saturated with water vapor and under a pressure equivalent to that of 30 in. w.c. (7.5 kPa).

Front 2492

Cuff

Back 2492

Finished edge of sleeve openings of protective garments.

Front 2493

Cuff Circumference

Back 2493

Measurement of torso garment cuff along bottom of opening from folded edge to folded edge, and multiplied by 2 to obtain circumference.

Front 2494

Cultural Resource Properties

Back 2494

Buildings, structures, or sites, or portions thereof, that are culturally significant, or that house culturally significant collections.

Front 2495

Cultural Resource Properties

Back 2495

Buildings, structures, or sites, or portions thereof, that are culturally significant, or that house culturally significant collections. [914, 2007]

Front 2496

Cultural Resource Properties

Back 2496

Buildings, structures, sites, or portions thereof that are culturally significant or that house culturally significant collections for museums, libraries, and places of worship.

Front 2497

Cultural Resource Properties

Back 2497

Buildings, structures, sites, or portions thereof that are culturally significant or that house culturally significant collections for museums, libraries, and places of worship. [909, 2005].

Front 2498

Curb Cut

Back 2498

Reduced curb height to facilitate vehicle passage over or across a curb.

Front 2499

Current

Back 2499

A flow of electric charge.