This document provides information about fire extinguishers and what to do in the event of a fire. It discusses the different classes of fires (A, B, C, D) and the appropriate extinguishers to use for each. Class A extinguishers are for ordinary combustibles like wood and paper, using water or other non-conductive agents. Class B extinguishers exclude air or interrupt combustion for flammable liquid fires, using carbon dioxide, dry chemical powders, or foam. Class C extinguishers must be non-conductive for electrical fires, and can use carbon dioxide or dry chemicals. Class D extinguishers use dry powders to smother fires in combustible metals. The document stresses

1. FIRE & EXTINGUISHERS
Fire & Extinguishers Presentation Transcript
1. DO YOU KNOW WHAT TO DO ? FIRE
2. INTRODUCTION Fires can break out any time Do you know what to do ? Do you
know where to go ? Do you know which extinguisher to use ?
3. The following slide show will help, HOWEVER YOU SHOULD READ YOUR
LOCAL FIRE INSTRUCTIONS, IT JUST MIGHT SAVE YOUR LIFE OR SOMEONE
ELSES.
4. IF YOU FIND A FIRE OR SMELL BURNING OR SEE SMOKE SHOUT, FIRE,
FIRE, FIRE, don’t be embarrassed or worried about being wrong and don’t try to be a
hero. Press the nearest FIRE CALL BUTTON, get to know where they are, normally by
or close too exits.
5. FIRE CALL POINT BREAK GLASS TO SOUND ALARM
6. USE THE NEAREST PHONE AND CALL THE EMERGENCY NUMBER. 999
7. GIVE YOUR NAME WHERE YOU ARE CALLING FROM WHERE THE FIRE IS
ONLY IF IT IS SAFE TO DO SO - INFORM THE OPERATOR IF YOU ARE
MAKING AN ATTEMPT TO EXTINGUISH THE FIRE ONE ATTEMPT ONLY
8. ONLY TACKLE A FIRE IF IT IS SAFE TO DO SO LEAVE THE BUILDING BY
THE NEAREST EXIT. CLOSE DOORS/ WINDOWS ONLY IF SAFE TO DO SO GO
TO THE FIRE ASSEMBLY POINT AWAIT THE FIRE SERVICE
9.
10. REMOVE ONE OR MORE OF THE ELEMENTS REQUIRED TO SUSTAIN
COMBUSTION AND THE FIRE WILL GO OUT OXYGEN HEAT/ IGNITION
SOURCE FUEL
11. EXTINGUISHERS
12. Fire Extinguisher Portable device used to put out fires of limited size. Such fires are
grouped into four classes, according to the type of material that is burning. Class A fires
include those in which ordinary combustibles such as wood, cloth, and paper are burning.
Class B fires are those in which flammable liquids, oils, and grease are burning. Class C
fires are those involving live electrical equipment. Class D fires involve combustible
metals such as magnesium, potassium, and sodium. Each class of fire requires its own
type of fire extinguisher.
13. Some extinguishers will put out only one class of fire; others are used for two or even
three classes; none is suitable for all four classes.
14. Fire extinguishers may go unused for many years, but they must be maintained in a
state of readiness. For this reason, periodic inspection and servicing are required, and that
responsibility rests with the owner. Local Authority Fire department inspectors check at
periodic intervals to see that extinguishers are present where required by law and that
they have been serviced within the specified time period.

2. 15. Class A fire extinguishers Class A fire extinguishers are usually water based. Water
provides a heat-absorbing (cooling) effect on the burning material to extinguish the fire.
Stored-pressure extinguishers use air under pressure to expel water.
16. EXTINGUISHERS FOR CLASS B FIRES Class B fires are put out by excluding air,
by slowing down the release of flammable vapours , or by interrupting the chain reaction
of the combustion. Three types of extinguishing agents — carbon dioxide gas, dry
chemical (powder) , and foam are used for fires involving flammable liquids, liquefiable
solids, greases, and oils.
17. Carbon dioxide is a compressed gas agent that prevents combustion by displacing the
oxygen in the air surrounding the fire. (CAUTION, DO NOT TOUCH THE HORN OR
BASE OF THE EXTINGUISHER DURING DISCHARGE AS THEY BECOME
EXTREMELY COLD)
18. The two types of dry chemical extinguishers include one that contains ordinary
sodium or potassium bicarbonate, urea potassium bicarbonate, and potassium chloride
base agents; The multi-purpose, dry chemical type extinguishers contains an ammonium
phosphate based powder. The multi-purpose extinguisher can be used on class A, B, and
C fires.
19. Most dry chemical extinguishers use stored pressure to discharge the agent, and the
fire is extinguished mainly by the interruption of the combustion chain reaction.
20. Foam extinguishers use an aqueous film forming foam (AFFF) agent that expels a
layer of foam when it is discharged through a nozzle. It acts as a barrier to exclude
oxygen from the fire
21. EXTINGUISHERS FOR CLASS C FIRES The extinguishing agent in a class C fire
extinguisher must be electrically non-conductive. Both carbon dioxide and dry chemicals
can be used in electrical fires. An advantage of carbon dioxide is that it leaves no residue
after the fire is extinguished. When electrical equipment is not energized, extinguishers
for class A or B fires may be used.
22. EXTINGUISHERS FOR CLASS D FIRES A heat-absorbing extinguishing medium
is needed for fires in combustible metals. Also, the extinguishing medium must not react
with the burning metal. The extinguishing agents, known as dry powders, cover the
burning metal and provide a smothering blanket.
23. The extinguisher label gives operating instructions and identifies the class, or classes,
of fire on which the extinguisher may be used safely. USING THE WRONG
EXTINGUISHER CAN BE DANGEROUS The extinguisher label
24. Under EC directives all new extinguishers are coloured RED a coloured band will
identify the type of extinguisher, READ THE INSTRUCTIONS New extinguishers
WATER FOAM POWDER CO2 WATER FOAM AFFF POWDER CO2
25. OLD STYLE COLOURED EXTINGUISHERS WATER FOAM AFFF POWDER
CO2
26. THE END Don’t let it be yours