Class B fires involve which type of substances?

Class B fires specifically involve flammable liquids. These include substances such as gasoline, oil, grease, and paints, which can ignite and produce significant heat and flames when exposed to ignition sources. The unique characteristics of flammable liquids, including their ability to evaporate and form vapors that ignite easily, require specialized firefighting techniques, such as the use of foam extinguishers, to effectively suppress the fire. This classification is essential in understanding fire safety protocols and the type of extinguishing agents that should be used in different fire situations. Understanding Class B fires helps in ensuring that appropriate measures are taken to handle materials that can lead to hazardous situations.