What must be considered when using a class D extinguishing agent?

When using a class D extinguishing agent, it is crucial to match the specific agent to the specific fuel. Class D fires involve combustible metals such as magnesium, titanium, and sodium, which require tailored extinguishing agents designed for those materials. Each type of combustible metal may react differently to extinguishing agents, and using the wrong agent can be ineffective or even exacerbate the fire.

For example, some metals may ignite more fiercely when treated with water or common chemicals, while certain Class D agents can smother the fire or absorb heat effectively without causing a dangerous reaction. This specificity in the choice of the extinguishing agent helps ensure safety and effectiveness in managing metal fires.