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There may be fire cases in your house, work place, public places. Then you have to
use fire extinguisher as the fire protection method.
What is fire extinguisher?
Fire extinguisher is application of agent to
1.Cool burning heat
2.Smother fuel
3.Remove oxygen
then fire cannot continue to burn.
There are 3 requirements should be fulfil to start a fire. They are a source of ignition(heat),a source of fuel(something that burn) and oxygen. Fire extinguisher will stop the burning by removing one or more above things.
- sources of ignition include heaters, lighting, naked flames, electrical equipment, smokers' materials (cigarettes, matches etc), and anything else that can get very hot or cause sparks
Fire extinguishers have 4 main classes based on their uses.
- Class A - Suitable for paper, wood & textiles..
- Class B - Suitable for flammable liquids.
- Class C - Suitable for flammable gasses.
- Class F - Suitable for cooking oil and fat.
- Electrical Risk - Suitable for electrical equipment.
There are 5 main types of fire extinguishers according to including fire extinguisher material.
1.Water, Water mist or Spray
2.Foam
3.ABC powder(Dry powder)
4.Corbon dioxide(Co2)
5.Wet chemical
These fire extinguisher can be used for fire classes according to below table.
How to use Fire extinguishers
Different fire extinguisher types may have different designs, but generally there are same feature and components to operate in similar manner.
To eliminate fires, the extinguishing agent should come out from the extinguisher. It is fed out of the extinguisher's tank via a pickup tube once an expellant (often from a compressed gas canister) is released into tank. When the safety pin is removed, the expellant is released and the discharge lever is squeezed. To aim, users hold the extinguisher by the carrying handle and point the discharge nozzle at the base of a fire. A pressure gauge displays the pressure level inside the tank.
End.......Thank you.
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