Sub Module 7.1: Classes of Fire
Classes Of Fire Fire results from the chemical reaction that occurs when oxygen combines rapidly with fuel to produce heat, (and light). Three essentials of this process form the ‘Fire Triangle’. A fire requires three components to burn, and the removal of any one of these components will extinguish the fire. The requirements of the three components, forming the ‘Fire Triangle’, are: Fuel: a combustible material, which may be a solid, liquid or gas Oxygen: in sufficient volume to support the process of combustion Heat: of sufficient intensity to raise the temperature of the fuel to its ignition (or kindling) point. Classes of Fire There are a number of types of portable fire extinguishers. Each type of extinguisher may be rated for one or more classes of fire. In some cases, particular extinguishers are not only considered ineffective against certain classes of fire, they can be dangerous if used in those circumstances. The classes of fire in European system are: Class A: O...