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Fire Extinguishers
Green Fire Safety ServicesNo:16,Old Bye Pass Road ,Vellore,
E-Mail: [email protected].
Web: http://www.hotfrog.in/Companies/green-fire-safety
Green Fire Safety Services
What you will learn…
Types of Fires
Types of Extinguishers
How to Use an Extinguisher
Green Fire Safety Services
What you will learn…
Using the wrong type of fire
extinguisher on a fire may make
matters worse.
The Three different fire (fuel)
classes…
Green Fire Safety Services
Types of Fires
Green Fire Safety Services
Class A
Class A Extinguishers will put
out fires in ordinary
combustibles, such as wood and
paper. The numerical rating for
this class of fire extinguisher
refers to the amount of water the
fire extinguisher holds and the
amount of fire it will extinguish
Used on Wood, Paper, Plastic
Class A Fires
Green Fire Safety Services
Class B
Class B Extinguishers should
be used on fires involving
flammable liquids, such as
grease, gasoline, oil, etc. The
numerical rating for this class of
fire extinguisher states the
approximate number of square
feet of a flammable liquid fire
that a non-expert person can
expect to extinguish Used on
Flammable Liquid Fires
Green Fire Safety Services
Class C
Class C Extinguishers are
suitable for use on
electrically energized fires.
This class of fire
extinguishers does not have
a numerical rating. The
presence of the letter “C”
indicates that the
extinguishing agent is non-
conductive. Used on
Electrical Fires
Green Fire Safety Services
Types of Extinguishers
Water Co2 Extinguishers,
Mechanical Foam,
Dry Chemical Powder,
Co2 Type Extinguishers,
ABC Type Extinguishers,
Clean Agent Extinguishers..
Green Fire Safety Services
Water Co2 Type Fire
Extinguisher(A Class)Water Fire Extinguishers are good for
tackling fires involving burning paper, wood and soft
furnishing (Class A fires), as the water soaks into the
materials and cools them, while extinguishing the fire.
This type of extinguisher does not contain harmful
chemicals but has a low fire fighting rating. Due to this
water fire extinguishers are usually large and heavy to
overcome their lack in fire fighting power. It is also
important to remember that water is an electrolyte and
conducts electricity. Care must therefore be taken with
regards to accidental use on exposed power cables.
However, both the weight and the conductivity problems
can be overcome by using water extinguishers with
environmentally friendly additives. Water extinguishers
with additives have a higher fire fighting rating which,
therefore, allows the use of smaller and lighter
extinguishers. Neither do they conduct electricity. As
they are mostly free of harmful substances, water fire
extinguishers are especially suitable in households where
children have access to the extinguishers and an
accidental discharge is possible.
Green Fire Safety Services
Mechanical Foam Type Fire
Extinguisher(A&B.Class)Mechanical Foam
Fire Extinguishers, also called AFFF
FOAM (Aqueous Film Forming Foam)
create a smothering film of foam over the
fire, which starves the fire of oxygen. The
foam also penetrates porous materials and
cools the fire through evaporation of the
water content in the foam. As the foam
creates a foam carpet on burning liquids
like petrol, foam extinguishers are also
suitable for flammable liquids and areas
where man-made fibres in soft furnishings
and carpets might liquidise under the
influence of heat. Foam extinguishers are
safe for use with electrical equipment,
although the electrical equipment will be
seriously damaged by the liquid. MAke
sure to select a foam extinguisher that has
been conductivity tested. Green Fire Safety Services
DCP Type Fire Extingusher
(B&C.Class Powder) DRY CHEMICAL POWDER
Dry Chemical (Class B & C Fires)
MULTI-PURPOSE DRY
CHEMICAL FIRE
EXTINGUISHERS USER
GUIDELINES Use for Class B and C
Fires What types of fires can be
extinguished with multi-purpose, dry
chemical extinguishers
Green Fire Safety Services
CO2 Type Fire Extinguisher
(B&C. Class Gas)
CO2 (Carbon Dioxide) Fire Extinguishers contain only pressurised CO2
gas and therefore leave no residue. This type of
extinguisher is suitable for use on fires involving burning
liquids (Class B fires), but is also a good solution for
quenching fires involving computer equipment and other
electrical appliances, as it does not cause damage to the
electrical items and does not cause the system to short
circuit. It is important to remember that when using CO2
extinguishers there is a possibility that once the
smothering CO2 gas has floated away the fire may re-
ignite if the source of the fire is not removed (eg
switching off the power supply) or if the materials are
still very hot. Please be aware that CO2 extinguishers that
are not fitted with double-lined swivel horns may cause
your fingers to freeze to the horn during the deployment
of the extinguisher. Always select CO2 extinguishers
with frost-free horns. CO2 extinguishers are NOT
suitable for deep fat fryers, as the strong jet from the
extinguisher carries the burning fat out of the fryer and
into the room!
Green Fire Safety Services
ABC Type Fire Extinguisher
(AB&C.Class)What do the A B C ratings mean
on Fire Extinguishers? FE Rating - A“A” TRASH–WOOD–PAPER Fire
extinguishers with a Class A rating are effective against
fires involving paper, wood, textiles, and plastics. FE
rating - B“B” LIQUIDS Fire extinguishers with a Class B
rating are effective against flammable liquid fires. These
can be fires where cooking liquids, oil, gasoline,
kerosene, or paint have become ignited. FE rating - C“C”
ELECTRICAL EQUIPMENT Fire extinguishers with a
Class C rating are suitable for fires in “live” electrical
equipment. Fire Extinguisher Ratings Fire extinguishers
are classified by fire type. The A, B, C rating system
defines the kinds of burning materials each fire
extinguisher is designed to fight. The number in front of
the A, B, or C indicates the rating size of fire the unit can
extinguish. To achieve a Class “A” rating, the
extinguisher must be capable of putting out the wood
crib, wood panel and excelsior (shredded paper) tests.
Ratings are based on the size of the material that can be
repeatedly exiting….
Green Fire Safety Services
Clean Agent Type Fire
ExtinguisherMultipurpose Clean Agent Fire Extinguishers
Clean Agents - an overview "Clean
Agents" are Hydro Chloro Fluoro Carbons
discharged as a rapidly evaporating liquid,
which leaves no residue. It effectively
extinguishes Class A, B, C Electrical fires
by cooling and smothering and does not
conduct electricity back to the operator.
The clean agent is pressurized with
nitrogen gas and is an EPA and FAA
approved HCFC blend B agent approved
for use on Class A, B and C fires. CLEAN
AGENTS are intended for use in areas
formerly protected by Halon 1211 hand
portable extinguishers such as computer
rooms, telecommunications facilities, lean
rooms, data storage areas, offices (for
protection of sensitive electronic
equipment), boats and vehicles. Green Fire Safety Services
Aim
Aim at the base of
the fire. If you aim at the
flames, the
extinguishing agent
will fly right through
and do no good. You
want to hit the fuel.
Green Fire Safety Services
Presentation by
Green Fire Safety Services
Green Fire Safety Services