What type of fire extinguisher should be used for fires resulting from combustible metals?

What type of fire extinguisher should be used for fires resulting from combustible metals?

• A. Class A
• B. Class B
• C. Class D
• D. Class K

Answer: (C)

Fires involving combustible metals, such as magnesium, titanium, and sodium, require a specific type of fire extinguisher that is designed to handle these materials safely. The correct choice is a Class D extinguisher, which is specifically formulated for extinguishing fires that result from combustible metals. Class D extinguishers work using extinguishing agents that smother the flames without reacting adversely with the burning metal. The nature of metal fires is distinctly different from those of ordinary combustibles or flammable liquids, as they can burn at extremely high temperatures and may react violently with water or other common extinguishing agents. Therefore, using a standard Class A or Class B extinguisher could exacerbate the situation rather than control it. Class D extinguishing agents generally include dry powder formulations that can effectively suppress these types of fires, making them the appropriate choice in situations involving combustible metals.

Fires involving combustible metals, such as magnesium, titanium, and sodium, require a specific type of fire extinguisher that is designed to handle these materials safely. The correct choice is a Class D extinguisher, which is specifically formulated for extinguishing fires that result from combustible metals.

Class D extinguishers work using extinguishing agents that smother the flames without reacting adversely with the burning metal. The nature of metal fires is distinctly different from those of ordinary combustibles or flammable liquids, as they can burn at extremely high temperatures and may react violently with water or other common extinguishing agents. Therefore, using a standard Class A or Class B extinguisher could exacerbate the situation rather than control it.

Class D extinguishing agents generally include dry powder formulations that can effectively suppress these types of fires, making them the appropriate choice in situations involving combustible metals.