Which fire class is categorized by combustible metals?

The correct choice refers to Class Delta fires, which are specifically categorized by the presence of combustible metals. These materials can include metals such as sodium, potassium, magnesium, and titanium, which burn at extremely high temperatures and can react violently with water and other common extinguishing agents.

Class Delta fires require special extinguishing agents, such as dry powder fire extinguishers, specifically designed for metal fires, because traditional methods like water can exacerbate the situation by causing explosions or intense reactions. Understanding Class Delta is essential for safe handling and proper firefighting techniques when dealing with fires involving combustible metals.

The classifications of fire types are critical in fire safety and prevention strategies, as each class requires different management approaches. In contrast, other classes focus on different types of materials such as ordinary combustibles (Class Alpha), flammable liquids (Class Bravo), and gases (Class Charlie), which do not include combustible metals. Hence, recognizing the unique nature of Class Delta is fundamental for effective fire response and safety precautions.