Which class covers Combustible Metals?

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Multiple Choice

Which class covers Combustible Metals?

Explanation:
Combustible metals burn in ways that general extinguishing agents can’t safely handle, so they need a specialized Class D extinguishing medium. The dry powder used for metal fires absorbs heat and forms a crust that isolates the metal from air, smothering the flame and slowing or stopping the reaction. Water-based extinguishers can react violently with reactive metals (like sodium or potassium) and can worsen the fire, while halons aren’t effective for metal fires. Metals such as magnesium, aluminum, titanium, and alkali metals require this Class D approach. That’s why the class for combustible metals is Class D.

Combustible metals burn in ways that general extinguishing agents can’t safely handle, so they need a specialized Class D extinguishing medium. The dry powder used for metal fires absorbs heat and forms a crust that isolates the metal from air, smothering the flame and slowing or stopping the reaction. Water-based extinguishers can react violently with reactive metals (like sodium or potassium) and can worsen the fire, while halons aren’t effective for metal fires. Metals such as magnesium, aluminum, titanium, and alkali metals require this Class D approach. That’s why the class for combustible metals is Class D.

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