CLASSES OF FIRE

CLASSES OF FIRE

Fire falls into one of five distinct classes. Knowing to which of these classes a fire belongs enables you to choose the appropriate extinguisher. You need to be aware of the classes of fire that each extinguisher is capable of extinguishing. the five classes of fire recognized within the Different Countries worldwide Fire and life safety Code of practice are A, B, C, D, and K. The classes and their approved symbols are in the following chart.

Class A	Describes fire of ordinary combustible materials, such as wood, cloth, paper, rubber, and many plastics. These fuels can be easily extinguished with water.
Class B	Describes fires of flammable liquids and gases. Combustible liquids, Petroleum greases, tars, oils,oil-based paints, solvent, lacquers and alcohols, butane, propane, and methane are the most common fuels for B class fires. Note: Do not attempt to extinguish fires involving pressurized flammable liquids or pressure gases unless the fuel source can be promptly shut off.
Class C	Describes fires involving energized electrical equipment. if safe to do so, the first step of extinguishing class C fires is to turn off or disconnect the electrical power.
Class D	Describes fires of combustibles metals, such as magnesium, titanium, sodium, lithium, and potassium.
Class K	Describes fires in cooking appliances that involve combustible cooking materials (vegetable, animal oil or fats). K class fires commonly occur in commercial kitchens and food preparation facilities that use deep fryers.