Which fire hazard classification involves flammable liquids?

The classification that involves flammable liquids is Class B. This classification specifically pertains to fires that originate from liquid materials that can easily ignite, such as gasoline, oil, paint, and other solvents. Flammable liquids have a low flash point, which means they can catch fire easily at relatively low temperatures and can create significant fire hazards, especially in enclosed or poorly ventilated spaces.

Understanding Class B fire hazards is crucial for fire safety, as they require different firefighting techniques compared to other classes. For example, a common method to extinguish Class B fires is to use foam, dry chemical agents, or carbon dioxide, which effectively suppress the flames by either smothering the fire or removing the oxygen needed for combustion.

Other fire hazard classifications, such as Class A, include ordinary combustible materials like wood or paper, Class C pertains to electrical fires, and Class D is associated with combustible metals. Each class has unique characteristics important for appropriate fire response strategies, making it essential for inspectors and responders to recognize and classify fire hazards accurately.