Class B fires typically involve what type of materials?

Class B fires are specifically associated with flammable liquids and gases. These materials include substances like gasoline, oil, grease, and other liquids that can ignite and produce significant fire hazards. Understanding the nature of Class B fires is crucial for firefighters, as they require different firefighting techniques and extinguishing agents compared to other classes of fires.

For example, water, which is effective on Class A fires involving common combustibles like wood and paper, can exacerbate Class B fires as it can spread the flammable liquids. Instead, firefighters use foam, dry chemical agents, or CO2 to suppress Class B fires effectively. Recognizing the characteristics of Class B fires helps firefighters strategize on how to best control and extinguish these incidents safely.