What class is used for combustible liquids and gases?

Combustible liquids and gases fall under Class B fires. This class specifically pertains to flammable liquids such as gasoline, oil, and grease, as well as gases that can ignite and cause fires. The fire-fighting methods for Class B materials typically involve using foam, dry chemicals, or carbon dioxide extinguishers, which are suitable for smothering flames and reducing oxygen availability.

Class A fires involve ordinary combustibles like wood or paper, Class C fires concern energized electrical equipment, and Class D fires relate to combustible metals. Understanding this classification system is essential for effective firefighting, as different materials require different extinguishing agents and techniques. Hence, recognizing that combustible liquids and gases belong to Class B is crucial for safety and efficacy in fire response situations.