Which extinguisher is for fires involving certain combustible metals such as magnesium and sodium?

Which extinguisher is for fires involving certain combustible metals such as magnesium and sodium?

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

Answer: (D)

Fires involving combustible metals require a specialized approach. Metals like magnesium and sodium burn at very high temperatures and can react violently with water or many common extinguishing agents. That’s why a Class D extinguisher, which uses a dry powder designed specifically for metal fires, is the appropriate choice. The powder coats the metal and helps separate it from oxygen, often cooling and smothering the reaction so the fire can be controlled safely. Other extinguisher types target ordinary combustibles, flammable liquids, electrical fires, or cooking oils, and they aren’t suitable for metal fires. So the extinguisher designed for combustible metals is the best option for these fires.

Fires involving combustible metals require a specialized approach. Metals like magnesium and sodium burn at very high temperatures and can react violently with water or many common extinguishing agents. That’s why a Class D extinguisher, which uses a dry powder designed specifically for metal fires, is the appropriate choice. The powder coats the metal and helps separate it from oxygen, often cooling and smothering the reaction so the fire can be controlled safely. Other extinguisher types target ordinary combustibles, flammable liquids, electrical fires, or cooking oils, and they aren’t suitable for metal fires. So the extinguisher designed for combustible metals is the best option for these fires.