For which type of fire is a special powder specifically designed to extinguish?

The special powder designed to extinguish fires involving metals is known as a Class D fire extinguisher. This type of fire is unique because it involves combustible metals such as magnesium, titanium, aluminum, and sodium, which can react violently with water and produce more heat when exposed to certain chemicals.

Using standard extinguishing methods like water or foam on a Class D fire can exacerbate the situation due to the reactive nature of these metals. The powder used in Class D extinguishers is specifically formulated to smother the fire, interrupting the chemical reaction and thereby extinguishing the flames without introducing additional reactivity.

Understanding the properties of combustible metals and the appropriate extinguishing agents is critical in fire safety training, particularly on ships and in industries handling these materials. This knowledge can prevent dangerous situations during a fire incident and ensure proper response protocols are followed.