What type of fire requires a Class B fire extinguisher?

A Class B fire extinguisher is specifically designed to tackle fires that involve flammable liquids, such as gasoline, oil, grease, and other similar substances. These types of fires are characterized by the presence of combustible liquids, which can spread rapidly and pose significant hazards in various environments, from industrial settings to kitchens.

Class B extinguishers use agents such as foam, carbon dioxide, or dry chemical powders to extinguish these fires effectively. The mechanism involves cutting off the oxygen supply or cooling the burning liquids, which is crucial because flammable liquids can reignite if not properly extinguished.

Understanding the properties of different types of fires is essential for effective firefighting and ensures that the correct extinguishing agent is used for the specific type of fire, thus enhancing safety for both the responder and potential victims. This specialization makes Class B extinguishers critical in situations where flammable liquids are present.