Class B fuels are characterized as what type of materials?

Class B fuels are characterized as flammable liquids and gases. This classification includes materials such as gasoline, diesel, oils, paint thinners, and other substances that can ignite and burn vigorously when exposed to an open flame or other ignition sources.

Understanding Class B fuels is crucial for emergency responders because they require specific fire extinguishing methods that differ from those used for other classes of materials. For instance, water is not effective on flammable liquid fires, as it can spread the burning liquid instead of extinguishing it. Instead, the use of foam, dry chemical extinguishers, or carbon dioxide is recommended to combat these fires effectively.

In contrast, ordinary combustibles like wood are classified as Class A fuels, while combustible metals fall under Class D, and deep fat cooking agents can sometimes be classified in specific scenarios as Class K. Recognizing the specific characteristics of Class B fuels helps emergency personnel develop appropriate strategies to manage incidents involving these types of materials efficiently and safely.