The best agents to control Class D fires are what?

Class D fires involve combustible metals, such as magnesium, titanium, and sodium, and require specific extinguishing agents to control them safely and effectively. The best agents for controlling Class D fires are chemical dry powder or sand. These agents work by smothering the fire and separate the metal from the oxygen in the atmosphere, effectively cooling the burning material and preventing the fire from spreading.

Chemical dry powder is designed specifically for metal fires and forms a barrier between the combustible metal and the oxygen, helping to extinguish the flames. Sand can also be used to smother the fire, as it helps to cool the temperature and prevent the release of combustible gases.

In contrast, water or foam are ineffective for Class D fires as they can react with the burning metals, often causing violent explosions or spreading the fire. Understanding the correct agents for suppressing different classes of fires is essential for safety and effective firefighting in maritime environments.