Hazmat 6Th Ed Chapter 13

Front 1

Incident Management begins with product ____.

Back 1

Control

P497

Front 2

Vapors from flammable and combustible liquids are usually ___ than air.

Back 2

Heavier

P498

Front 3

Flammable and combustible liquids are typically ___ than water and if so, will float on the surface of water.

Back 3

Lighter

P498

Front 4

Flammable and combustible liquids are Class __ materials; water is an ineffective extinguishing agent.

Back 4

Class B

P498

Front 5

Flammable and combustible liquid vapors may be toxic; for example, _____ is a carcinogen.

Back 5

Benzene

P498

Front 6

A ____ involves the physical breach in a container or failure of valves, through which product escapes.

Back 6

Leak

P498

Front 7

Leak control is referred to as ____. Hazardous materials, technicians and specialists perform most offensive Leak control tactics.

Back 7

Containment

P498

Front 8

Normally, personnel trained below the technician level, do not attempt ____ actions such as leak control.

Back 8

Offensive

P499

Front 9

Notable exceptions include situation involving gasoline, diesel, liquefied petroleum gas (LPG) and natural gas fuels. Operations responders can take _____ actions with these fuels provided they have appropriate training procedures, and PPE.

Back 9

Offensive

P499

Front 10

____ level responders may perform leak control by activating emergency shut off devices on transportation containers and close and shut off valves at fixed facilities, pipe, lines and piping.

Back 10

Operations

P499

Front 11

Under safe and acceptable circumstances, ______ responders may operate, emergency, remote, shut off devices on cargo tank, trucks, and intermodal container’s.

Back 11

Operations

P499

Front 12

Most, but not all, cargo tanks have emergency shut off devices. Device locations, May vary, but they are often located behind the ____ side cab.

Back 12

Drivers side cab

P499

Front 13

High pressure tanks (MC-___) the MC-___ has an emergency shut off device on the left front corner of the tank (behind the driver compartment).

Back 13

MC-331

P499

Front 14

MC-331s of 3,500 gallon capacity or larger should have ___ emergency shutoff devices, one on the tank behind the driver and the other on the __ of the tank, often on the passenger side. These tanks may also have an electronically operated shut down device that can be activated __ft from the vehicle.

Back 14

Two

Rear

150ft

P500

Front 15

High pressure tanks (MC-331) will typically have shutoff devices behind the drivers __ and on the ___ side rear corner of the truck.

Back 15

Cab

Drivers side

P500

Front 16

The MC-306/DOT 407 and the MC307/DOT 407 have an emergency shut off device on the ___-front corner of the tank (behind the drivers compartment).

Back 16

Left

P500

Front 17

Nonpressure liquid tanks (MC306/DOT406) will have shut off on the tank behind the _____ side cab.

Back 17

Drivers

P500

Front 18

Corrosive liquid tanks

The MC312/DOT412 do ____ typically have emergency shut off devices. If an emergency shut off device is installed, it is located on the left-front corner of the tank (behind the driver compartment).

Back 18

NOT

P501

Front 19

Gas service (high pressure and cryogenic) intermodal containers will have emergency shut off for the bottom internal valve.

Responders can look for a metal ___ running down, one side of the frame rail of the intermodal container or from the liquid valve to a fixed point away from the container. Pull this cable to activate emergency shut off..

Back 19

Cable

P501

Front 20

High pressure and cryogenic _____ containers will have emergency shut off devices. Look for a metal cable running down the rail of the container. Pull the cable to activate the device and close the bottom internal valve.

Back 20

Intermodal

P501

Front 21

It may be safe for responders to shut off some natural gas lines at the meter to the house or business. Generally, the meter is located outside the structure near the foundation, or on the easement near the _____ line.

Back 21

Property line

P502

Front 22

Transport pipeline and main distribution devices should only be operated by ____ authorized personnel.

Back 22

Utility

P502

Front 23

Shut off is an in-line valve located on the _____ supply side of the meter; that is, between the distribution system, and the meter. When the valves open, the tang (rectangular bar) is in line with the pipe. To close the valve, use a spanner wrench, ____ wrench, or similar tool, to turn the tang until it is ___ degrees to the pipe. Contact the local utility company when the gas has been shut off or when an emergency involving natural gas occurs in its service area.

Back 23

Owner

Pipe wrench

90 degrees

P502

Front 24

____-control tactics can find a hazardous material that has been released from his container. At the operations level, control actions involving spills are generally ______ in nature and safety is a primary consideration.

Back 24

Spill control

Defensive

P503

Front 25

To prevent further contamination, responders should use spill control to contain a hazardous material after its release. For this reason, still control, is often simply called _____.

Back 25

Confinement

P503

Front 26

To prevent the spread of liquid materials, methods, including building ____ or Dikes near the source, catching the material in another container, or directing (______) the floater, a remote location for collection.

Back 26

Dams

Diverting

P503

Front 27

Strategically placed ___ streams, can direct, absorb, dilute, or move gases.

Back 27

Water streams

P504

Front 28

Operations level responders, take protective actions, but do not attempt to stop the release unless they can close a remote shut off ___ from a safe location.

Back 28

Valve

P504

Front 29

_____, like a sponge, soaking up water, retains a liquid, hazardous material, in some other material.

Back 29

Absorption

P506

Front 30

Responders often use _____ at incidents involving small spills (___ gallons or less), such as gasoline or diesel fuel.

Back 30

Absorption

55 gallons or less

P506

Front 31

______ are used to soak up hazardous materials.

Back 31

Absorbents

P506

Front 32

____ differs from absorption, in that the molecules of the liquid hazardous material physically adhere to the adsorbent rather than being absorbed into its interspaces.

Back 32

ADsorption

P506

Front 33

_____ Primarily control, shallow liquid spills. Responders usually use organic based materials, such as activated, charcoal, or carbon as adsorbents.

Back 33

Adsorbents

P506

Front 34

Responders perform ____ or covering to reduce or delay, the dispersion of hazardous materials. For blanketing, or covering solids, such as powder, or dust, the following tools are used:

Tarps, plastic sheeting, salvage covers, other materials, including foam.

Back 34

Blanketing

P507

Front 35

_____ of liquids is essentially the same as vapor suppression, because it typically uses an appropriate aqueous (water) foam agent to cover the surface of a spill.

Back 35

Blanketing

P 507

Front 36

To confine or control, a hazardous material, responders may implement damming, Diking, diverting, and or ______ techniques.

Back 36

Retaining

P508

Front 37

There are two main types of dams: containment and ______/overflow.

Back 37

Underflow

P509

Front 38

A ______ Dam, sometimes called a complete dam, stops all flow of the product and or water.

Back 38

Containment dam

P509

Front 39

An ______/_______ damn permits, surface, water, or runoff to pass either under or over the damn while holding back the hazardous material.

Back 39

Underflow/overflow

P509

Front 40

______ dams are appropriate for water soluble or miscible materials in small streams or ditches.

Back 40

Containment dams

P509

Front 41

___ can be constructed to trap materials that are heavier or lighter than water, based on their _____ gravity.

Back 41

Dams

Specific gravity

P509

Front 42

Dams can be constructed to trap materials that are heavier or lighter than water, based on their _____ gravity.

Back 42

Specific gravity

P509

Front 43

If a liquid is less dense than water (density less than 1) it will ____ when added to water, but if it is denser than water (density greater than 1) it will _____.

Back 43

Float

Sink

P509

Front 44

And underflow Dam retains hazardous materials that are ______ than water, while the water flows under the Dammed hazardous material.

And overflow Dam retains hazardous materials that are _____ than water, while the water flows over the dammed hazardous material.

Back 44

Lighter

Heavier

P509

Front 45

_____ dams can work to let the clean water flow over the top while keeping the heavier material contained.

Back 45

Overflow dams

P510

Front 46

_____ is using raised embankments or other barriers to prevent movement of a hazardous material to another area.

Back 46

Diking

P510

Front 47

______ is directing and controlling the flow of a liquid to an area that will produce less harm.

Back 47

Diverting

P510

Front 48

_____ is holding or containing a liquid in an area until it can be absorbed, neutralized, or removed.

Back 48

Retaining

P510

Front 49

_____ is often used as a longer-term solution than other similar product control methods.

Back 49

Retention

P510

Front 50

_____ is often used as a longer-term solution than other similar product control methods.

Back 50

Retention

P510

Front 51

Responders can use sand or dirt to ___ liquid from flowing into storm drains.

Back 51

Divert

P510

Front 52

_____ is often used as a longer-term solution than other similar product control methods.

Back 52

Retention

P510

Front 53

Responders can use sand or dirt to ___ liquid from flowing into storm drains.

Back 53

Divert

P510

Front 54

Responders can implement diking by rolling ___ sides to form raised barriers, preventing hazardous materials from flowing down a slope.

Back 54

Tarp

P510

Front 55

_____ is the application of water to a water soluble material to reduce the hazard. ______ of liquid materials rarely has practical applications and hazmat incident in terms of school control; responders use dilution more frequently during _____ operations.

Back 55

Dilution

Dilution

Decontamination

P511

Front 56

Responders may use dilution at spills involving small amounts of corrosive material, to prevent _____.

Back 56

Fuming

P511

Front 57

_____ involves breaking up or dispersing a hazardous material that has spilled on a solid or liquid surface.

Responders usually use _____ agents on hydrocarbons spills.

Back 57

Dispersion

Dispersion

P511

Front 58

Using ____ involves raising, or lowering the pH of corrosive materials, to render than neutral (PH7).

______ can also refer to any chemical reaction that reduces the hazard of the material.

Back 58

Neutralization

Neutralization

P512

Front 59

Using ____ involves raising, or lowering the pH of corrosive materials, to render them neutral (PH7).

______ can also refer to any chemical reaction that reduces the hazard of the material.

Back 59

Neutralization

Neutralization

P512

Front 60

With few exceptions, responders should only conduct neutralization under the direction of a hazardous materials _______.

Back 60

Technician

P512

Front 61

Neutralization is used to shift PH closer to __.

Back 61

7

P512

Front 62

Vapor ____ uses water spray to direct or influence the course of airborne hazardous materials.

It is important to identify the hazardous material before using this tactic.

Back 62

Dispersion

P512

Front 63

Vapor ____ uses water spray to direct or influence the course of airborne hazardous materials.

It is important to identify the hazardous material before using this tactic.

Back 63

Dispersion

P512

Front 64

Pressurized streams of water from hose lines or unattended ____ streams, may help disperse vapors.

Back 64

Master streams

P512

Front 65

Vapor ____ is the action taken to reduce the emission of vapors.

Materials such as alcohol’s, and polar solvents may destroy regular water, mixable foam.

______ resistant foams or agents may be required for these products.

Back 65

Suppression

Alcohol

P513

Front 66

Vapor ____ is the action taken to reduce the emission of vapors.

Materials such as alcohol’s, and polar solvents may destroy regular water, mixable foam.

______ resistant foams or agents may be required for these products.

Back 66

Suppression

Alcohol

P513

Front 67

Foam concentrates are divided into two general categories, based on the classification of fuels for which they are effective:

Class __ foams (for ordinary combustibles)

Class ___ foams (for flammable and combustible liquids)

Back 67

Class A

Class B

P513

Front 68

Protein foam

3-__%

Back 68

3 to 6 %

P514

Front 69

Fluoroprotein Foam

3 and __%

Back 69

3 and 6%

P514

Front 70

Fluoroprotein Foam

3 and __%

Back 70

3 and 6%

P514

Front 71

Film forming Fluoroprotien Foam (FFFP)

3% and __%.

Back 71

3% and 6%

P514

Front 72

Concentrates design solely for hydrocarbon fires will not extinguish polar solvent (____ type fuel/liquids that mix) fires, regardless of the concentration at which they are used

Back 72

Alcohol

P516

Front 73

Water miscible materials, such as alcohols, esters, ketones, destroyed, regular fire, fighting foams and require an _____-resistant foam agent, therefore, responders should not use regular fluoroprotein and regular aqueous film forming foam (AFFF) on those materials.

Back 73

Alcohol resistant

P516

Front 74

The _____ provides guidance on when to use alcohol resistant foam for a particular material.

Back 74

ERG

P516

Front 75

The _____ provides guidance on when to use alcohol resistant foam for a particular material.

Back 75

ERG

P516

Front 76

Limited human studies show _____, which contains perfluorooctane sulfonate (PFOS), may be associated with developmental delays in fetuses and children; decreased fertility; increase cholesterol; changes to immune system; increase uric acid levels; changes in liver enzymes; and prostate kidney and testicular cancer.

Back 76

AFFF

P516

Front 77

Aqueous film forming foam (AFFF) will have to be effective on _____-miscible materials, such as alcohols, esters, and ketones.

Back 77

Water miscible

P516

Front 78

The ___ provides guidance on the type of type of foam to use.

Back 78

ERG

P516

Front 79

To produce high-quality foam, four elements are necessary: foam concentrate, water, air, and mechanical _____.

Back 79

Agitation.

P516

Front 80

Foam products must be _____ (mixed with water) and ____ (mixed with air) before use. To produce fire fighting foam, foam concentrate, water, and air must be _____ or injected.

Back 80

Proportioned

Aerated

Educted

P516

Front 81

Four elements are necessary to produce high quality foam; foam, concentrate, water, air, and mechanical agitation.

Back 81

P516

Front 82

_____ Produces adequate foam bubbles to form an effective foam blanket.

Back 82

Aeration

P517

Front 83

For vapor suppression, first responders should use ___-aspirating nozzles rather than water fog nozzles, because aerated foam maintains the vapor suppressive blanket longer.

Back 83

Air-aspirating

P517

Front 84

For vapor, suppression, first responders should use ___-aspirating nozzles rather than water fog nozzles, because aerated foam maintains the vapor suppressive blanket longer.

Back 84

Air-aspirating

P517

Front 85

For flammable liquid fires, non-aerated ____ can be effective so water fog nozzles may be used.

Back 85

AFFF

P517

Front 86

For vapor, suppression, first responders should use ___-aspirating nozzles rather than water fog nozzles, because aerated foam maintains the vapor suppressive blanket longer.

Back 86

Air-aspirating

P517

Front 87

For flammable liquid fires, non-aerated ____ can be effective so water fog nozzles may be used.

Back 87

AFFF

P517

Front 88

Do not use water streams in conjunction with the application of _____. Water destroys, and washes away foam blankets.

Back 88

Foam

P517

Front 89

After identifying a flammable or combustible liquid, follow the foam recommendations in the ____ guide in the ERG to determine what type of foam to use.

The ERG recommends alcohol resistant foam for _____/water miscible liquids. Recommends regular foam for non polar/water immiscible liquids.

Back 89

Orange guide

Polar

P517

Front 90

ARC

Back 90

Alcohol, resistant concentrate

P517

Front 91

ARC

Back 91

Alcohol, resistant concentrate

P517

Front 92

PSL

Back 92

Polar solvent liquid

P517

Front 93

ATC

Back 93

Alcohol type concentrate (used on polar solvent liquids)

P517

Front 94

ATC

Back 94

Alcohol type concentrate (used on polar solvent liquids)

P517

Front 95

F3

Back 95

Fluorine free foams, or flammable hydrocarbon liquid fires.

P517

Front 96

_____ are foam concentrates that are used with either class a or class B fires.

Back 96

Emulsifiers

P518

Front 97

_____ are foam concentrates that are used with either class a or class B fires.

Back 97

Emulsifiers

P518

Front 98

Only use emulsifiers with fuels that are ___ inch deep or less.

Back 98

1 inch

P518

Front 99

Foam quality is measured in terms of its ___ percent drainage time and it’s _____ ratio.

Back 99

25 percent drainage time

Expansion ratio

P518

Front 100

From quality is measured in terms of its ___ percent drainage time and it’s _____ ratio.

Back 100

25 percent drainage time

Expansion ratio

P518

Front 101

____ time is the time required for one-fourth (25 percent or one-quarter) of the total liquid solution to drain from the foam.

Back 101

Drainage time

P518

Front 102

_____ ratio is the volume of finished foam that results from a unit volume of foam solution.

Back 102

Expansion ratio

P518

Front 103

Long drainage times result in ____ lasting foam blankets.

Back 103

Long

P518

Front 104

__-_____ foam nozzles produce a larger expansion ratio than water fog nozzles.

Back 104

Air aspirating

P518

Front 105

The ____ the expansion ratio, the thicker the foam blanket, and the longer lasting the foam blanket

Back 105

Higher

P518

Front 106

Low expansion- less than ___:1

Medium expansion 20:1-___:1

High expansion greater than ___:1

Back 106

Low expansion 20:1

Medium expansion 20:1 to 200:1

High expansion -greater than 200:1

P518

Front 107

_____ involves controlling the movement of air by natural or mechanical means.

Back 107

Ventilation

P518

Front 108

Equipment to be used in a flammable atmosphere must be _____ safe to reduce the danger of ignition.

Back 108

Intrinsically

P519

Front 109

Emergency response guide book ERG provides BLEVE safety precautions

Back 109

P520

Front 110

Until the Leak is controlled, do not extinguish flammable/combustible liquid fires, burning around relief ____ piping.

Back 110

Valves

P521

Front 111

Unburned vapors are usually ___ than air and form pools or pockets of gas in low areas where they may ignite. When responders are in a leak area, it is critical to control all ignition sources.

Back 111

Heavier

P521

Front 112

Unburned vapors are usually ___ than air and form pools or pockets of gas in low areas where they may ignite. When responders are in a leak area, it is critical to control all ignition sources.

Back 112

Heavier

P521

Front 113

When performing a vapor, suppression tactics, stay __wind from the product and vapors, because they may ignite.

Back 113

Upwind

P521

Front 114

Unburned vapors are usually ___ than air and form pools or pockets of gas in low areas where they may ignite. When responders are in a leak area, it is critical to control all ignition sources.

Back 114

Heavier

P521

Front 115

When performing a vapor, suppression tactics, stay __wind from the product and vapors, because they may ignite.

Back 115

Upwind

P521

Front 116

An increase in the intensity of sound or fire issuing from a pressure release device may indicate that the container is overheating, and rupture is ______.

Back 116

Imminent

P521

Front 117

Unburned vapors are usually ___ than air and form pools or pockets of gas in low areas where they may ignite. When responders are in a leak area, it is critical to control all ignition sources.

Back 117

Heavier

P521

Front 118

When performing a vapor, suppression tactics, stay __wind from the product and vapors, because they may ignite.

Back 118

Upwind

P521

Front 119

An increase in the intensity of sound or fire issuing from a pressure release device may indicate that the container is overheating, and rupture is ______.

Back 119

Imminent

P521

Front 120

During incidents involving flammable liquid storage tanks, operations level responders should maintain a ____ distance.

Back 120

Defensible

P521

Front 121

Unburned vapors are usually ___ than air and form pools or pockets of gas in low areas where they may ignite. When responders are in a leak area, it is critical to control all ignition sources.

Back 121

Heavier

P521

Front 122

When performing a vapor, suppression tactics, stay __wind from the product and vapors, because they may ignite.

Back 122

Upwind

P521

Front 123

An increase in the intensity of sound or fire issuing from a pressure release device may indicate that the container is overheating, and rupture is ______.

Back 123

Imminent

P521

Front 124

During incidents involving flammable liquid storage tanks, operations level responders should maintain a ____ distance.

Back 124

Defensible

P521

Front 125

Foam, dry, chemical, and water are common extinguishing agent for flammable ____. Responders should select foam when they can blanket the fuel separating it from its air supply.

Back 125

Liquids

P521

Front 126

Protein, fluoroprotein, and ____ have been the most commonly used fire fighting foams for years.

Back 126

AFFF

P521

Front 127

increased production and use of alternative fuels, such as ethanol, has increased demand for ______ resistant foams.

Back 127

Alcohol, resistant foams

P521

Front 128

Pipeline and hazardous materials, safety administration (PHMSA) recommends using ERG guide ____ for these materials.

Back 128

Guide 127

P521

Front 129

Most potassium Based dry chemical agents (such as purple __) are compatible with foam, but other dry chemical extinguisher’s are not.

Back 129

Purple K

P522

Front 130

The color of the majority of potassium based dry chemical agents are ____.

Back 130

Purple

P522

Front 131

The ___-__ method directs the foam stream on the ground, near the front edge of a burning liquid spill. This method is typically used on a pool of ignited or unignited liquid fuel on open ground.

Back 131

Roll-on method

P522

Front 132

The ___-___ method ( also known as the backsplash method) maybe employed when an elevated object is near or within the area of a burning pool of liquid or an unignited liquid spill. This method is primarily used on fire contained in diked pools around storage tanks and fires involving spills around damaged or overturn transport vehicle’s.

Back 132

Bank down

P522

Front 133

The ___-___ method ( also known as the backsplash method) maybe employed when an elevated object is near or within the area of a burning pool of liquid or an unignited liquid spill. This method is primarily used on fire contained in diked pools around storage tanks and fires involving spills around damaged or overturn transport vehicle’s.

Back 133

Bank down

P522

Front 134

The ___-___ method is used when the other two methods are not feasible because of the size of the ignited, or unignited spill area, or the lack of an object from which the bank the foam.

Back 134

Rain down

P523

Front 135

The ___-___ method ( also known as the backsplash method) maybe employed when an elevated object is near or within the area of a burning pool of liquid or an unignited liquid spill. This method is primarily used on fire contained in diked pools around storage tanks and fires involving spills around damaged or overturn transport vehicle’s.

Back 135

Bank down

P522

Front 136

The ___-___ method is used when the other two methods are not feasible because of the size of the ignited, or unignited spill area, or the lack of an object from which the bank the foam.

Back 136

Rain down

P523

Front 137

The ___-____ method is best used with AFFF.

Back 137

Rain down

P523

Front 138

Some ____ formulations contain a class of chemicals, known as perfluorochemicals (PFCs) and this has raised concerns about the potential for groundwater contamination.

Back 138

AFFF

P523

Front 139

When a closed pressure container, such as a liquefied gas (LPG tank) is heated, the liquid inside begins expanding. When a liquid reaches its boiling point, he begins to return to its ____ state.

Back 139

Gaseous

P523

Front 140

For a BLEVE to occur, the liquid or liquefied gas must be above its ___ point (at standard temperature and pressure) when the container failure occurs.

Back 140

Boiling point

P523

Front 141

The most common cause of a BLEVE is one flames contact the tank shell above the liquid level, and the tank shell itself has overheated. When attacking these fires, apply continual water (at a minimum rate of ____ gpm per flame impingement point) to the upper portion of the tank, preferably from unattended master stream devices.

Back 141

500gpm

P523

Front 142

If there’s any possibility of BLEVE use unattended master streams with a minimum flow rate of ___gpm.

Back 142

500gpm

P523

Front 143

In order to prevent a BLEVE, responders should deploy water streams for maximum effective __ when containers or tanks of flammable gases are exposed to flame impingement.

Back 143

Reach

P523

Front 144

Responders should also cool, the piping and steel supports under tanks to prevent their ____.

Back 144

Collapse

P523

Front 145

Responders should also cool, the piping and steel supports under tanks to prevent their ____.

Back 145

Collapse

P523

Front 146

When using water streams to disperse gas being released under pressure, the mass and velocity of the water streams must exceed the mass and velocity of the escaping ___.

Back 146

Gas

P524

Front 147

Responders should also cool, the piping and steel supports under tanks to prevent their ____.

Back 147

Collapse

P523

Front 148

When using water streams to dispersed, gas, being released under pressure, the mass and velocity of the water streams must exceed the mass and velocity of the escaping ___.

Back 148

Gas

P524

Front 149

Do not extinguish ___-fed fires, burning around relief, valves or piping unless turning off the supply cannot stop the leak in product. An increase in the intensity of sound or fire issuing from a relief valve indicates pressure within the container is increasing and container Failure may be imminent.

Back 149

Gas fed

P524

Front 150

Natural gas may also be compressed, stored and shipped in cylinders marked as compressed natural gas (CNG). Natural gas is also ship and stored as a _____ (LNG) and is more likely to BLEVE in this form.

Back 150

Liquid

P524

Front 151

Natural gas and liquefied natural gas incidents commonly occur when excavation equipment breaks through underground pipes. When these brakes occur, contact the ____ company immediately.

Back 151

Utility

P524

Front 152

If gas is burning, the flame should not be ____.

Back 152

Extinguished

P524

Front 153

Do ____ extinguish a fire if gas is burning from a broken gas pipe, Valve, fitting, or flange. DO provide protection for exposures, contact the ___ company immediately.

Back 153

NOT

Utility company

P525

Front 154

Do ____ extinguish a fire if gas is burning from a broken gas pipe, Valve, fitting, or flange. DO provide protection for exposures, contact the ___ company immediately.

Back 154

NOT

Utility company

P525

Front 155

Under the right conditions, flammable solids can be _____ hazards. Common fire, fighting materials (Water, C02) may increase the risk of damage if they are used on some flammable solids.

Back 155

Explosion

P525

Front 156

Most Flammable solids burn very hot. Some have extremely bright ___ hot fires, which may be dangerous to view, without eye protection for intense light.

Back 156

White

P525

Front 157

Many flammable solids are metals that require a class ___ fire extinguisher.

Back 157

Class D

P525

Front 158

Some facilities may have Total flooding, dry chemical systems in flammable solid storage areas. If a dry chemical system has discharged into a confined space, no one should enter the space without ____ until the space is thoroughly ventilated.

Back 158

SCBA

P525