Which type of extinguishing agent is appropriate for use on a Class D fire?

Class D fires involve combustible metals such as magnesium, titanium, and sodium, which burn at extremely high temperatures and can react violently with water or other common extinguishing agents. Therefore, specialized extinguishing agents are necessary for effectively combating these types of fires.

The appropriate extinguishing agents for Class D fires are specifically designed to smother the flames by forming a barrier between the oxygen and the burning metal. These agents often come in the form of a dry powder, such as sodium chloride or copper powder, which can effectively absorb heat and interrupt the combustion process without causing a dangerous reaction.

The use of water, chemical foam, or carbon dioxide is not suitable for Class D fires due to the risk of reactions that could exacerbate the situation or fail to control the fire. Hence, choosing a Class D fire extinguishing agent specifically addresses the unique challenges posed by these fires, ensuring safety and effective fire suppression.