What type of fires are classified as Class B fires?

• A. Fires involving organic materials
• B. Fires involving electrical equipment
• C. Fires involving flammable liquids and gases
• D. Fires involving combustible metals

Answer: (C)

Class B fires are defined specifically as those involving flammable liquids, gases, and greases. This classification includes materials such as gasoline, oil, solvents, and paint, which can ignite and produce significant flames. The reason Class B fires are distinct from other classes is due to the nature of the burning materials; they require different firefighting agents and tactics compared to fires involving solids (Class A), electrical fires (Class C), or combustible metals (Class D).

In combating Class B fires, the use of foam, dry chemical agents, or carbon dioxide extinguishers is common, as these can effectively suppress flames without spreading the fire. Understanding the classification of fires is critical for firefighters in order to select the appropriate extinguishing method quickly and safely, thereby minimizing damage and ensuring personal safety.