Saturday 14 May 2016

Fire extinguishers are colour-codes

Fire extinguishers are colour-coded; each colour denotes the type of extinguishing agent that is contained in the extinguisher.
The different types are: Water, AFFF Foam, Dry powder, Carbon Dioxide and Wet Chemical.

Fires are Categorised into Classes:

Class A - Flammable solids or freely burning material
Class B - Flammable liquids,
Class C - Flammable gases,
Class F - Cooking oils. There is also the hazard of electrical fires involving electrical appliances or wiring.

It is always important to use the correct extinguisher on each type of fire. Use of the wrong type could cause the fire to flare up.


Class A fires should be tackled with Water, AFFF foam or dry powder extinguishers.

Class B fires should be tackled with AFFF foam, Dry powder or carbon dioxide extinguishers.

Class C fires should be tackled by isolating the gas/liquid supply and not primarily by use of a fire extinguisher. Only a Dry Powder extinguisher should be used.

Class F fires should be tackled with only a Wet Chemical fire extinguisher.

Electrical hazards should be tackled with either Dry Powder or Carbon Dioxide extinguishers.

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