Class D Fire

Published: | Updated: June 1, 2017

Definition - What does Class D Fire mean?

A class D fire refers to a fire that involves in burning of some extraordinary metals such as sodium, magnesium, aluminum, potassium, lithium, titanium, zirconium and some of their alloys.

Safeopedia explains Class D Fire

Most class D fires occur when the combustible metals are in dust, flake, shaving forms or molten. A class D fire cannot be extinguished by water as it produces hydrogen at high temperatures and eventually an explosion occurs and spreads of fire further. It is, therefore, a special extinguishing powder based in sodium chloride (edible salt) or other salts, are used to extinguish a class D fire. Sands are also effective in putting out a class D fire.

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