Which material is commonly used to extinguish Class D fires?

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Multiple Choice

Which material is commonly used to extinguish Class D fires?

Explanation:
Class D fires involve burning metals, and the goal is to blanket the metal to cut off air and cool the surface without causing a dangerous reaction. Sand is effective here because it can be dumped over the fire to smother it, isolating the fuel from oxygen and absorbing a lot of heat. Water or CO2 can react with reactive metals or fail to control the heat properly, and foam isn’t suited to metal fires. While specialized dry powders designed for metal fires are ideal, sand is a simple, readily available option that works well for many small metal-fire situations.

Class D fires involve burning metals, and the goal is to blanket the metal to cut off air and cool the surface without causing a dangerous reaction. Sand is effective here because it can be dumped over the fire to smother it, isolating the fuel from oxygen and absorbing a lot of heat. Water or CO2 can react with reactive metals or fail to control the heat properly, and foam isn’t suited to metal fires. While specialized dry powders designed for metal fires are ideal, sand is a simple, readily available option that works well for many small metal-fire situations.

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