Rocks & mirror
Encyclopedia of Marine and Energy Technology



Fire is the result of a combination of three factors; a substance that burns, an ignition source, and a supply of oxygen. Fires are divided into three categories, according to the material involved:

Class A – solid materials extinguished by cooling below their flash point,

Class B – oils and inflammable liquids extinguished by smothering to exclude oxygen,

Class C – electrical equipment extinguished by non-conductive agents such as dry powder.