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8/10/2019 2003 10 Fire Extinguisher
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An Introduction to
Fire Extinguishers
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SOME COMMON FIRE
CLASSIFICATIONS
Ordinary combustibles
Paper, wood, rubber, plasticsand textiles.
Flammable liquidsOil, petrol, solvents
Live Electrical equipmentequipment and computersE
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HOW THEY EXTINGUISH CLASS A FIRES:
Works by cooling.
Use on paper, wood, rubber, plastic & textile
fires.
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HOW THEY EXTINGUISH CLASS B FIRES:
Works by blanketing the fuel.
Interrupts chemical reaction at fuel surface.
Use on flammable liquids e.g. oil, gas,solvent fires
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HOW THEY EXTINGUISH CLASS E FIRES:
use on live electrical equipment
Works by displacing oxygen, smothering fire.
Use on electrical equipment
E
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Portable Fire
Extinguishers
Can be CARRIED to a fire
Weigh from ~2kg to ~13kg
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Portable Fire
Extinguishers
LIMITED IN:
Capacity - .5kg to 11kgapprox of extinguishing agent
Range - Typically 1m to 6m
Duration - Discharge theircontents in only 5 to 45 seconds!
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Extinguisher
Common features Safety pin (and plastic tamper tag) Carrying handle / operating lever Pressure gauge Label :
Type(Water, C02, Dry Chemical) Classification (A, B, E) Capacity Rating (in Kg) Instructions
Discharge nozzle or horn E
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SOME COMMON TYPES OFFIRE EXTINGUISHERS:
WATER
DRYCHEMICAL
CO2E
E
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WATER Propellant: compressed
air or nitrogen ONLY for Class fires
wood / paper, etc.
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DRY CHEMICALMULTI-PURPOSE RATED
Best for general use:
Reduced risk of re-ignition A 4.5kg DCP unit can last upto 20s.
Effect ive range o f 2m to 6m
Either OrE E
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C02- Rated Best on burning liquids / electrical
SHORT range1m to 2m
2kg, 3.5kg and 5kg extinguishers available
DISPERSES QUICKLY!
Unit gets VERY cold - hold properly
E
E
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In case of burning odour
or smoke: Raise the alarm!
Call Emergency Services 0 0 0 or 112 for
mobile phones, First!
Disconnect Equipment if safe to do so
Remove combustibles, ONLY IF SAFE TO
DO SO
Notify Other Staff and Wardens
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RACEupon discovery of fire or smoke
Removepersons in immediate danger!
Alert others and Emergency ServicesContain fire and smoke (close doors)
Evacuate &/or extinguish
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Use a portable extinguisherONLY if the:
Fire Service has been called(Dial 0 0 0 or 112 mobiles)*
EXIT IS CLEAR (fight fire with yourback to an exit )
Proper extinguisher is at hand, and...
You have been trained and know how to use it!
* If practicable
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Remember
the PASSword:
1) Keep your back to a
clear escape route,
2) Stand back 2m to 5m
from the fire,
P.A.S.S.
PULL
AIM
SQUEEZE
SWEEP
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PULLthe pin
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AIMLOW atthe base of the fire
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SQUEEZEthe lever
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SWEEPfrom side to side (slowly)
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OK, Its outNow What?
WATCHthe fire area
If the fire flares up again repeat!
If you cant control the fire, LEAVE immediately!
Recharge or replace any used fire extinguisher!
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The End
Use of Fire Extinguishers 22