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

2003 10 fire extinguisher

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