What type of fire can a Class D extinguisher be used on?

A Class D extinguisher is specifically designed to combat fires that involve combustible metals such as magnesium, titanium, aluminum, and potassium. These metals burn at very high temperatures and can react violently with water or standard fire extinguishing agents, making it crucial to use the appropriate Class D extinguisher, which usually contains dry powder agents like sodium chloride or copper powder that are effective in smothering the flames without causing a hazardous reaction.

In contrast, other types of fires listed, such as electrical fires, flammable liquids, or fires involving wood and paper, require different types of extinguishers. Electrical fires typically need a Class C extinguisher, which is safe to use on energized electrical equipment. Flammable liquid fires are tackled with Class B extinguishers, which can effectively extinguish fires fueled by liquids like gasoline or oil. Fires involving wood and paper are best dealt with using Class A extinguishers, which utilize water or other agents suitable for ordinary combustibles.

Understanding the specific classes of fire extinguishers is essential for effective fire safety and prevention, as using the wrong type of extinguisher can exacerbate a fire instead of extinguishing it.