Scba

Front 1

Description

Back 1

• Open-Circuit
• Pressure Demand
• Positive Pressure Fully Automatic
• SCBA (Self Contained Breathing Apparatus)

Front 2

Standards

Back 2

• Meets the minimum standards as set forth in NFPA 1981 Standard on Open-Circuit Self-Contained Breathing Apparatus for Fire Fighters

Front 3

SCBA Description Details

Back 3

• Open-Circuit: Exhale to the environment through the face piece mounted regulator (closed circuit you exhale into the system)
• Pressure Demand: Demand valve in regulator opens upon inhalation
• Positive Pressure: Maintains a slightly higher pressure inside the face piece compared to the surrounding air pressure

Front 4

SCOTT SCBA

Back 4

• Designed to provide maximum mobility, with approximately 30-60 minutes of breathable air and respiratory protection for the user
• Realistically provides 15-45 minutes of breathable air while performing strenuous work

Front 5

Factors Contributing to Air Supply Consumption

Back 5

• Degree of physical activity of the user
• Physical conditioning of the user
• Degree to which the user’s breathing is affected by excitement, fear or other emotional factors
• Degree of training or experience which the user has with this or similar equipment
• Whether or not the cylinder is fully charged at the start of the work period
• Loose or improperly fitted face piece
• Condition of the SCBA itself

Front 6

Hazardous Atmospheres Contain

Back 6

• Smoke
• Heat
• Toxic Gases
• Irritant Particulates
• Deficient Oxygen Levels
• Potential of Rapid or Explosive Combustion

Front 7

Toxic Gases

Back 7

• Carbon Monoxide
• Hydrogen Chloride
• Hydrogen Cyanide
• Nitrous Oxides
• Phosgene

Front 8

Precautions

Back 8

• All members shall operate in teams of two or more in communication either:
• Visual
• Audible
• Physical
• Safety Guide Rope
• Electronic
• Other Means

Front 9

• All personnel shall be fully equipped with SCBA on and in use prior to entering:

Back 9

• Known hazardous atmospheres
• Suspected hazardous atmospheres
• Those which may rapidly become hazardous
• Confined space and below grade spaces (above per NFPA 1500 Fire Department Occupational Safety and Health Program)
• Structure to perform overhaul (per TFD policy)

Front 10

• No protection from:

Back 10

• Excessive heat
• Gases or toxins which are absorbed through the skin
• Flashover, backdraft, smoke explosion or other rapid changing fire events

Front 11

• Per NFPA 1404 and TFD policy

Back 11

• Personnel must be out of the IDLH prior to low air alarm activation
• Immediate departure of the IDLH upon Vibralert activation or Heads Up Display indicating low bottle pressure on the SCOTT 50 or 75
• Notify Captain or Officer responsible for you
• Leave structure with partner

Front 12

SCOTT 4.5 SCBA

Back 12

• Not being used in field by TFD, only found at Training (drag drills, off air drills and PT purposes only)
• Wire frame
• Manual PAL
• Does not have the built in safety features of the 50 or 75

Front 13

SCOTT 50 SCBA

Back 13

• Several versions of the SCOTT 50
• Some have PAL
• Most integrated with PASS
• Some have Bell Assembly
• Some have Heads Up Display
• Some with CBRN regulators
• Some have EBSS
• Some have 2 LED lights at regulator hose
• Quick-Disconnect regulator
• Can be found with any combination listed above

Front 14

SCBA Component Assemblies

Back 14

• Cylinder and Valve Assembly
• Pressure reducer and high pressure hose assembly
• Face piece mounted regulator and low pressure hose assembly
• Remote gauge control console
• SCOTT face piece assembly
• Back-frame and harness assembly

Front 15

Back-Frame and Harness Assembly

Back 15

• The back frame is the rigid base and back plate to which the Harness Straps and Pressure Reducer Assembly are attached. Its main purpose is to hold the air cylinder. This is done by means of an adjustable cylinder band and locking tab. Will accept 30, 45 and 60 minute bottles.
• The harness assembly consists of two adjustable shoulder straps and adjustable waist straps made of Kevlar and is equipped with a quick release buckle. The shoulder straps have pockets through which the low pressure hose and the remote gauge line pass. The waist belt rests on the hips of the wearer and distributes most of the weight of the SCBA to that area

Front 16

Cylinder Types

Back 16

• 3 Generations:
• Fiberglass – Expired (painted yellow and exclusively used for drag drills, off-air drills and PT)
• Kevlar – Has a clear coat and yellow or off-white color
• Carbon Fiber – Grey in color and has a clear coat

Front 17

• Kevlar Cylinder:

Back 17

• Aluminum inner shell
• Full-Wrap Kevlar/Epoxy resin with clear coat finish
• High Pressure – 4500 psi (refill less than 4000)
• 30 Minute – 45 Cubic Feet of Volume
• 60 Minute – 87 Cubic Feet of Volume (20.4 Pounds)
• Pack and Bottle – 29 Pounds
• Hydrostatic tested every 3

Front 18

• Carbon Fiber:

Back 18

• Aluminum inner shell
• Over-Wrapped with a carbon epoxy resin; ends are the strongest
• High Pressure – 4500 psi (refill when less than 4000)
• 30 Minute – 45 Cubic Feet of Volume
• 60 Minute – 87 Cubic Feet of Volume (18.9 Pounds)
• Pack and Bottle – 27.5 Pounds
• Hydrostatic tested every 5 years

Front 19

Cylinder Valve Breakdown

Back 19

• Rubber Bumper – Protection for the valve assembly
• Cylinder Gauge – Provides a reading of the pressure within the cylinder and gauge assembly and must read the same on both
• Cylinder Hanger – Connects cylinder to back-frame assembly
• Over Pressurization Disk – Safety feature should the cylinder be over-pressurized
• Cylinder Valve – To be opened fully counter clockwise when in use. To close, push valve in and turn clockwise to stop

Front 20

Refilling Cylinders

Back 20

• Fill cylinders at a rate of 1000 psi per minute or slower
• Fill rate not to exceed 1500 psi per minute
• There are safety risks when filling to rapidly
• Filling cylinder to rapidly will generate heat which results in pressure loss when cylinder is allowed to cool

Front 21

SCOTT Face Piece

Back 21

• AV 3000HT:
• Full face piece assembly
• Face seal constructed from a blend of natural and EDPM rubber
• Lens is cone-shaped to resist scratching
• Large diameter inlet for attachment off pressure demand breathing regulator
• Head harness has five point suspension system and is made of Kevlar to meet NFPA 1981
• HT – High Temperature
• Subjected to 500 degree heat in oven for 5 minutes – convection
• Subjected to flame impingement at 1800 degrees for 10 seconds
• Following heat test mask must pass 6” drop test
• Positive pressure seal must stay intact for 25 minutes
• Exposed to a heat load of 15 kW/m2 for 5 minutes while breathing at 40 lpm
• Nose cup is in front of face seal (AV2000 nose cup away from face seal)

Front 22

SCOTT 75

Back 22

• New generation air pack being used by TFD
• Black painted aluminum alloy frame
• Integrated carrying handles
• Drag loop on harness system
• Modified control console
• Dual manifold EBSS (Emergency Breathing Support System) umbilical
• Quick-Disconnect regulator
• RIC/UAC System Connector
• Head Up Display on regulator

Front 23

Heads Up Display (HUD)

Back 23

• Full – Both GREEN lights will be illuminated
• ¾ - Single GREEN light illuminated
• ½ - YELLOW light flashing slowly (once per second)
• ¼ - RED light flashing rapidly (10X per second)
• Low battery light

Front 24

Pressure Reducer and High Pressure Hose

Back 24

• SCBA Brain – Automatic (no user action is required)
• Internal Components:
• Primary Pressure Reducer
• Reduces to 100 psi average
• Secondary Pressure Reducer
• Reduces pressure to 150 psi average
• Low cylinder transfer valve
• Automatic transfer valve
• Check Valve
• Re-Seatable over pressurization relief valve
• Relieves pressure at 225 psi or greater

Front 25

Principles of Operation

Back 25

• When initially turned on 150 psi is forced through causing Vibralert to sound
• 100 psi when in normal operation
• When primary pressure relief valve fails another valve operates causing 150 psi to sound the Vibralert with a full bottle to notify the user of an internal malfunction and that maintenance is required
• Relief valve activates at 250 psi
• If leak is heard near the brain or is related to the brain slowly turn off bottle

Front 26

Face Piece Mounted Regulator & Low Pressure Hose
• Components:

Back 26

• Diaphragm
• Exhalation Valve Assembly
• Vibralert Alarm Assembly
• Demand Piston Assembly
• Donning Switch
• Lock diaphragm to prevent free flow of air
• Red Purge Valve

Front 27

• Delivers

Back 27

160 lpm
• Peak flow 500 lpm
• Capable of sustained air flow volumes of greater than 4000 lpm

Front 28

Remote Gauge-Line Control Console

Back 28

• Part of pressure reducer assembly
• Located at right shoulder strap
• Indicates remaining cylinder pressure
• Connected by a metal wrapped hose-line
• For some SCOTT 50 and 75, integrated pass controls are located here

Front 29

P.A.S.S.

Back 29

• Personal
• Alert
• Safety
• System
• Also known as P.A.L. (Personal Alert Locator) on SCOTT 4.5 on the 4.5 this is a separate module that must be turned on manually
• On the 50 this is usually integrated into the unit and activates automatically upon turning on the bottle
• Otherwise known as PAK-ALERT SE on the SCOTT 75

Front 30

SCOTT 4.5 & Some SCOTT 50 PAL Operations

Back 30

• Must be turned on separately from air cylinder
• To turn ON, turn knob fully clockwise
• May also be turned to full alert by user by placing knob in the center position
• Activate during trouble or May-Day situation

Front 31

SCOTT 50/75 PASS Operation

Back 31

• Most SCOTT 50 P.A.S.S. (PAK-ALERT SE7) devices are integrated. All SCOTT 75 P.A.S.S. are integrated
• Movement sensor module in the base of pack frame
• Activates automatically when cylinder turned ON but battery operated
• Can also be activated manually, on remote gauge line control console
• If the sensor module does not sense motion of the SCBA for 20 seconds, the P.A.S.S. will signal a pre-alarm condition. If there is still no motion of the SCBA for the next 12 seconds, the full alarm will sound
• P.A.S.S. reset/shut-off button is yellow and located on remote gauge (push twice to silence, reset and shut-off)
• P.A.S.S. activation can be done by pushing the red button located on the remote gauge (push once to sound alarm)

Front 32

Regulator Operating Inspection SCOTT 75

Back 32

• Visually inspect for sign of wear or damage
• Before pressurizing the respirator check the manual alarm feature, test reset by pressing reset button twice
• Open cylinder valve, P.A.S.S. will sound 3 chirps
• Leave motionless for 20 seconds, P.A.S.S. will go into the pre-alarm mode, test reset by moving the SCBA motion sensor
• Leave motionless for 20 seconds, P.A.S.S. will go into the pre-alarm mode, test reset by pressing the reset button 2X
• Check full-alarm mode by leaving SCBA motionless for 28-30 seconds, check reset by pressing reset button 2X
• With cylinder valve closed and residual air purged from respirator depress reset button 2X to turn P.A.S.S. off

Front 33

Control Console Sensor Module Lights

Back 33

• Startup P.A.S.S. – Bright light then flash green
• Normal Operation – Flash green
• Respirator Low Air (1/4 Cylinder) – Flash orange (Alternately)
• Low Battery While On – Flash orange once every two seconds
• Shut Down – Lights off
• Press Reset With Unit Off (Battery Test) – Bright light then flashes green if good and flashes red if low
• Press Manual Alarm With Unit Off – Flash green then full alarm flash red
• Press Reset From Manual Alarm – Returns to flash green
• P.A.S.S. Pre-Alarm – Flash red
• P.A.S.S. Full Alarm – Flash red

Front 34

Maintenance

Back 34

• Daily
• Monthly
• Sanitizing Mask
• Regulator
• Changing Batteries

Front 35

Inspection of Air Pack

Back 35

• Routine Inspection at Start of Shift
• Through Inspection After Each Use
• Through Inspection On the 15th of Every Month

Front 36

Authorized Field Repairs

Back 36

• General Cleaning
• Battery Replacement ONLY
• Contact Maintenance for Other Repairs
• Arrange Replacement With Maintenance Supervisor

Front 37

Cleaning Regulators

Back 37

• Remove obvious debris
• Spray with mild detergent and water solution
• Clean water used to rinse
• DO NOT submerge the regulator into any solution
• No bleach or alcohol products
• Shake dry, then towel dry
• Charge cylinder and blow out with purge valve (DO NOT use compressed air)
• Return regulator

Front 38

Sanitizing Regulators

Back 38

• Remove any obvious debris
• Spray with multi-wash solution
• Ten minutes contact time
• Clean water rinse
• Shake dry, then towel dry
• Charge cylinder and blow out with purge valve (DO NOT use compressed air)
• Return regulator to air pack holder

Front 39

Batteries 1st Generation Integrated P.A.S.S

Back 39

• Single 9V battery located under small plate at bottom of brain secured by three Philip’s-Head screws

Front 40

Batteries 2nd Generation Integrated P.A.S.S

Back 40

• Two AA batteries located at the top of the brain under a cover secured by a single Phillips Head screw

Front 41

Batteries 3rd Generation Integrated P.A.S.S.

Back 41

• Two 9V batteries located on the rear of the P.A.S.S. alarm device located on the bottom of the harness. These batteries are secured by 4 Phillip Head screws

Front 42

Batteries SCOTT 75 Integrated P.A.S.S.

Back 42

• Takes 6 AA batteries located within the motion and audible alert system at the bottom of the harness and access can be made via a large single Phillip Screw