TYPE's OF FIRE EXTINGUSHER

TYPE's OF FIRE EXTINGUSHER

 

 

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1=Water Type

Water and sodaacid fire extinguishers extinguish the fire by taking away the heat element of the fire triangle. soda agents also separate the oxygen element from the other elements.
Water extinguishers are for Class A fires only - they should not be used on Class B or C fires. The discharge stream could spread the flammable liquid in a Class B fire or could create a shock hazard on a Class C fire.
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2= Carbon Dioxide
Carbon Dioxide fire extinguishers extinguish fire by taking away the oxygen element of the fire triangle and also be removing the heat with a very cold discharge.
Carbon dioxide can be used on Class B & C fires. They are usually ineffective on Class A
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3=

Dry Chemical Dry Chemical fire extinguishers extinguish the fire primarily by interrupting the chemical reaction of the fire triangle. Today's most widely used type of fire extinguisher is the multipurpose dry chemical that is effective on Class A, B, and C fires. This agent also works by creating a barrier between the oxygen element and the fuel element on Class A fires. Ordinary dry chemical is for Class B & C fires only. It is important to use the correct extinguisher for the type of fuel! Using the incorrect agent can allow the fire to re-ignite after apparently being extinguished succesfully Blue line

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4=AFFF (Aqueus Film Forming Foam)
Aqueous Film Forming Foams (AFFFs) are used by fire fighters to help extinguish fires that are difficult to fight, particularly petroleum fires (also known as Class B fires). Not all fire fighting foams are classified as AFFF. Some AFFF formulations contain a class of chemicals known as perfluorochemicals.
for class A + B fire with Yellow line