When should a Class B fire extinguisher be used?

A Class B fire extinguisher is specifically designed to combat fires that involve flammable liquids and gases, such as gasoline, oils, paints, and solvents. These types of fires can produce rapid, intense flames and can spread quickly if not addressed promptly. The extinguishing agents in Class B extinguishers, like foam, carbon dioxide, or dry chemical, are effective in smothering the flames and preventing the fire from reigniting.

Understanding the nature of different fires is crucial for effective firefighting. Flammable liquids and gases require a different approach compared to solid materials or electrical fires, as the latter may need other classes of extinguishers (like Class C for electrical fires). Therefore, using a Class B extinguisher when dealing with flammable liquids or gases ensures a safer and more efficient response to the fire.