Class B fires involve which type of material?

Class B fires involve which type of material?

• A. A Fire in ordinary combustibles
• B. A Fire in electrical equipment
• C. A Fire that occurs in flammable liquids
• D. A Fire in metals

Answer: (C)

Flammable liquids are Class B fires. These involve liquids that burn easily and can give off vapors that ignite, such as gasoline, solvents, kerosene, and oils. The fires are categorized this way because the fuel is a liquid that readily vaporizes and spreads the flame, different from ordinary combustibles (like wood or paper), electrical equipment, or metals. Because of the liquid fuel, water is often not the best choice and specific extinguishing methods like foam, dry chemical powders, or CO2 are used to blanket or interrupt the fuel and vapor ignition.

Flammable liquids are Class B fires. These involve liquids that burn easily and can give off vapors that ignite, such as gasoline, solvents, kerosene, and oils. The fires are categorized this way because the fuel is a liquid that readily vaporizes and spreads the flame, different from ordinary combustibles (like wood or paper), electrical equipment, or metals. Because of the liquid fuel, water is often not the best choice and specific extinguishing methods like foam, dry chemical powders, or CO2 are used to blanket or interrupt the fuel and vapor ignition.