I.
PURPOSE
The purpose of
this SOP is to provide operating procedure for the fire extinguishers to extinguish the fire.
II.
SCOPE
The procedure is applicable for Fire
Extinguishers in…….
III.
RESPONSIBILITY
Safety department, User department, Security
department.
IV.
ACCOUNTABILITY
Head – Safety and
Environment
V.
PROCEDURE:
1.0
Fire is classified into four types based on fuel.
1.1
Class A Fire : All solid fires
1.2
Class B Fire :
All liquid fires
1.3
Class C Fire :
All gas fires
1.4
Class D Fire :
All metal fires
2.0
Fires should be extinguished by using the different
extinguishers as follows
2.1 Class A fire – Mechanical foam type
extinguishers.
2.2 Class
B fire - Foam, dry powder and carbon dioxide extinguishers.
2.3 Class
C fire - Dry powder and carbon dioxide extinguishers.
2.4
Class D fire - Extinguisher with special dry powder
metal fires.
3.0
Operating
procedure
3.1 Dry Chemical Powder type
3.1.1
‘Squeeze grip nozzle type dry chemical powder fire
extinguisher’ (5 kg / 10kg/22.5kg.capacity.
3.1.1.1
Take the
extinguisher and be about 5 to 8 feet away from the fire and be on upwind side of the fire. Remove safety clip of the extinguisher.
3.1.1.2
Hold the
squeeze grip nozzle in one hand and direct it towards
the fire.
3.1.1.3
Strike the knob with the other hand.
3.1.1.4
Press the
squeeze grip nozzle and direct the powder near the
seat of the fire.
3.1.1.5
Progress
forward, moving the nozzle rapidly with a side to side sweeping motion as the pressure drops.
3.1.1.6
Fight
the fire till the flame disappears or in the case extinguisher becomes
empty, use another extinguisher.
3.2 Foam type
3.2.1
Take the extinguisher and be about 5 to 10 feet away from the fire.
3.2.2
Be on the upwind side of the fire, remove the safety
clip.
3.2.3
Hold the hose pipe with foam dispersing nozzle of the
extinguisher with hand.
3.2.4
Strike the knob with the other hand.
3.3.5 When pressure gets developed ( 30 to 45
seconds)within the cylinder and direct jet at
the far inside edge of container or object such that it spreads evenly and forms foam
blanket on burning liquid.
3.3.6 If possible, gradually approach fire as
the pressure of extinguisher drops.
3.3.7 Fight the fire till the flame disappears
or in case extinguisher becomes empty, use
another extinguisher.
Note: Do not direct the jet directly into liquid
because that will drive the foam
beneath the surface and render ineffective.
In addition, it may splash burning liquid on
to the surrounding and spread the fire.
3.4 Carbon
dioxide type
3.4.1 Take the extinguisher and be about 5 to 8
feet away from the fire.
3.4.2 Be on the upwind side of the fire.
3.4.3 Remove the safety pin, if provided.
3.4.4 Hold the horn in one hand and direct it
towards the fire with the other hand, turn the valve in anti-clockwise direction in
order to get required pressure and jet length.
3.4.5 Carry extinguisher with the help of
handle, direct the jet at the base of fire and operate in sweeping motion. Proceed towards the fire and be as close as possible to the fire.
3.4.6
Fight the fire till the flame disappears or
extinguisher becomes empty.
Note: Most
suitable on indoor fires and on fires in electrical equipment. If horn is of metal
type, then do not use the same extinguisher on electrically live equipment or cable or
electrical fire. Ventilate the area
after use. In case of
major fire, hydrant system can be operated by safety squad.
VI.
REVISION SUMMARY
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Version No.
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Revised on
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Reason for Revision |
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NA
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