What type of fires are Class B fire extinguishers used for?

Class B fire extinguishers are specifically designed to combat fires that involve flammable liquids and gases. This includes substances such as gasoline, oil, grease, and solvents which can easily ignite and spread rapidly. The extinguishing agents used in Class B extinguishers work by creating a barrier between the oxygen and the fuel, effectively suffocating the fire.

Understanding that Class B extinguishers are not suitable for other types of fires is essential. For instance, Class A extinguishers are used for ordinary combustibles like wood and paper, while Class C extinguishers are designed for electrical fires, and Class D extinguishers target combustible metals. This knowledge is critical for ensuring the right extinguisher is used in the event of a fire, enhancing safety and effectiveness in managing fire situations.