Which type of fires does Class B cover?

Class B fires are specifically categorized as fires that involve flammable liquids and gases. This classification includes substances such as gasoline, oil, alcohol, and other similar materials that can ignite and spread rapidly. The focus on Class B fires reflects the unique behaviors and characteristics of flammable liquids, which tend to produce vapor that can ignite at room temperature and are often difficult to extinguish with water because they can float on the surface.

Understanding this classification is crucial for fire response and safety protocols, as the methods and extinguishing agents used for Class B fires differ significantly from those for other types of fires presented in the other options. For example, energized electrical equipment (noted in one of the other choices) requires different strategies and extinguishing agents to avoid electrical shock or re-ignition. Similarly, combustible metals and ordinary combustibles have their own distinct properties that require specific handling and extinguishing methods, making it essential to recognize Class B fires and respond appropriately.