When should a Type B extinguisher be used?

A Type B extinguisher is specifically designed to combat fires involving flammable liquids and gases. This includes substances such as gasoline, oil, grease, and various solvents that can ignite and cause hazardous situations. The composition of the extinguishing agent in a Type B extinguisher is tailored to effectively disrupt the combustion process of these materials, making it vital for safety in scenarios where such fires may occur.

The training and classification of fire extinguishers are based on the nature of the materials that cause the fires. Therefore, while other types of extinguishers are designated for different categories—like Type A for ordinary combustibles, Type C for electrical fires, and Type D for combustible metals—Type B extinguishers are essential and specifically utilized for the unique challenges posed by flammable liquids and gases.