Which class of fire involves the combustion of flammable liquids?

The classification of fires is based on the type of material that is burning. A Class B fire specifically involves flammable liquids such as gasoline, oil, solvents, and other similar substances. These types of fires can be extremely hazardous due to the volatility and potential for rapid spread of the flames caused by the burning liquid.

Class B fires require specific extinguishing agents, such as foam, dry chemical, or carbon dioxide, which are effective in smothering the flames and preventing vapor formation. It's important to understand this classification because using the wrong type of extinguishing agent can exacerbate the fire or even cause explosive reactions.

In contrast, Class A fires involve ordinary combustible materials like wood, paper, or cloth; Class C fires pertain to electrical equipment; and Class D fires involve combustible metals. Each class requires different approaches for safe and effective firefighting, highlighting the importance of identifying the correct classification when dealing with a fire situation.