Fire Class is the classification of fires developed by the National Fire Protection Association (NFPA 10): Class A fires are fires in ordinary combustibles such as wood, paper, cloth, rubber, and many plastics; Class B fires are fires in flammable liquids such as gasoline, petroleum greases, tars, oils, oil-based paints, solvents, alcohols; Class C fires are fires involving energised electrical equipment such as computers, servers, motors, transformers, and appliances; Class D fires are fires in combustible metals such as magnesium, titanium, zirconium, sodium, lithium, and potassium; Class K fires are fires in cooking oils and greases such as animal and vegetable fats.
Reference Definition by Wikipedia: Fire Class is a term used to denote the type of fire, in relation to the combustion materials which have (or could be) ignited. This has onward impacts on the type of suppression or extinguishing materials which can be used. Class letters are often assigned to the different types of fire, but these differ between territories. There are separate US, European, and Australian standard (e.g. Europe: Class A: Combustible materials (wood, paper, fabric, refuse); Class B: Flammable liquids; Class C: Flammable gas; Class D: Flammable metals, etc.)
Related Definitions in the Project: The HSE Management; Process Safety Engineering; Project Management
