Fire Classification

Class A fires - are fires involving organic solids like paper, wood, etcClass B fires - are fires involving flammable Liquids. Class C fires - are fires involving flammable Gasses Class D fires - are fires involving Metals

The British Standards Institution (BSI) has published a standard introducing a new fire classification for cooking oil and fat fires, Class F, in BS 7937: Specification for portable fire extinguishers for use on cooking oil : 2000.

The standard includes a detailed description of the rigorous testing extinguishers must successfully undergo to achieve the Class F test fire rating.

Electrical fires are not included, as they can fall into any of the classifications. However if you use a water extinguisher you must isolate the electric supply first as you could be electrocuted.

In addition it must be remembered that certain electrical apparatus maintains a lethal charge for some time after it has been switch off.