Which type of extinguisher is used for fires involving combustible metals?

Fires involving combustible metals, such as magnesium, sodium, or potassium, require specialized extinguishing agents due to the unique characteristics of these materials. A Class D fire extinguisher is specifically designed for this purpose, as it contains dry powder agents that can smother the fire or absorb heat, effectively extinguishing the flames.

Using the wrong type of extinguisher, such as those designed for ordinary combustibles (Class A), flammable liquids (Class B), or energized electrical fires (Class C), can exacerbate the situation or even cause the fire to flare up. For instance, water from a Class A extinguisher can react violently with certain combustible metals, leading to dangerous explosions. It is crucial for responders to use the appropriate Class D extinguisher to safely and effectively manage fires involving combustible metals.