“fire extinguishers” an introduction to “fire extinguishers” crusoe 7-10 secondary college...
TRANSCRIPT
OBJECTIVES:After this training you should be able to:
• IDENTIFY 3 common classes of fires • SELECT the proper type of extinguisher • EVALUATE when it is safe to
fight an “early-stage” fire, and; • APPLY the “P.A.S.S. method to
operate a portable extinguisher.
UNTRAINED PEOPLE Cannot use a fire extinguisher safely
because they are:
• UNABLE to evaluate a fire
• UNAWARE of DANGER due to...
• LACKING JUDGEMENT regarding:
– Safe and correct use of, and – Limitations of portable extinguishers
WHY UNTRAINED PEOPLECan’t use a fire extinguisher safely
(continued):
INEXPERIENCED• Don’t know about the
proper type of extinguisher • Don’t know how to make
a “Fight or Flight” analysis• Unfamiliar with the
“P.A.S.S. method”
COMMON FIRE CLASSIFICATIONS
“Ordinary” combustibles Paper, wood, rubber, plastics
and textiles.
“Flammable liquids” Oil, gasoline, solvents
“Energized circuits”
Electrical equipment and computers
E
HOW THEY WORK:
• Works by cooling. • Numerical rating indicates amount of agent,
duration, and range of discharge on test fires.• Area of Class A fire which a “non-expert” can
extinguish, with proper training – 1-A is equivalent on Class-A fire to five liters of water. – 2-A contains has twice as much extinguishing agent.
HOW THEY WORK:
• Class “E” units have no numerical rating.• A Class “E” rating doesn’t imply any capacity.• Only indicates that the extinguishing agent is
non-conductive, safe on energized equipment.• Works by displacing oxygen, smothering fire.
E
Portable Fire Extinguishers
LIMITED IN:• Capacity - 1.5 to 9 kg. of
extinguishing agent
• Range - Typically 1 to 3 m
• Duration - Discharge their
contents in only 5 to 30 seconds!
Extinguisher Common features
• Locking pin• Carrying handle / operating lever • Pressure gauge• Label :
– Type (Water, C02, Dry Chemical)– Classification (A, B, C)– Instructions
• Discharge nozzle or horn
WATER• Water + CO2 propellant
• ONLY for Class fires–wood / paper, etc.
• Spreads burning liquids!• DANGER of electric shock
if used on on live circuits!
DRY CHEMICAL MULTI-PURPOSE RATED
• Best for general use:• Reduced risk of re-ignition• A 3.5kg. unit empties in 8-10 secs.
– Effective range of 2 ft. to 5 m.
Either Or
C02 - Rated• Best on burning liquids / electrical• SHORT range - 1 to 3 m.• 6- kg unit empties in 5 to 10 seconds!
–Use short spurts!
• DISPERSES QUICKLY! – Continue applying after the fire is out!
• Unit gets VERY cold - hold properly
In case of burning odor or smoke:
• Call 911 First!• Notify Security - X 43434
• Disconnect Equipment – Remove combustibles, if you can do
so without danger to yourself
• Notify Floor Monitors– and Emergency Safety Coordinator
REACT upon discovery of fire or smoke
Remove persons in immediate danger!
Ensure doors are closed! (confine fire/smoke)
Activate the building alarm !
Call the Fire Department !
Treat ALL fires as DANGEROUS!– Continue a complete building evacuation– Do not attempt to fight a fire UNLESS you are
OSHA certified in use of a fire extinguisher !
Use a portable extinguisher ONLY if the:
• Building is being evacuated (Fire alarm has been pulled)• Fire Department has been called (Dial 911!)
• Fire is NOT spreading (small and contained)
• EXIT IS CLEAR (fight fire with your back to an exit )
• Proper extinguisher is at hand, and...– You have been trained and know how to use it!– You use “Buddy System” - have someone back you up!
• Get assistance BEFORE trying to fight a fire!
Remember the PASS word:
1) Keep your back to a clear escape route,
2) Stand back 2 to 3 feet from the fire,
3) Then >>:
P.A.S.S.PULL
AIM
SQUEEZE
SWEEP