Which type of fire involves combustible metals?

The correct choice identifies a Class D fire as one that involves combustible metals. This category specifically deals with fires fueled by metals such as magnesium, titanium, and sodium, which can burn at extremely high temperatures and pose unique challenges in firefighting.

Class D fires are different from other fire classes. For example, Class A fires involve ordinary combustibles like wood, paper, and cloth; Class B fires involve flammable liquids and gases; and Class C fires include electrical equipment. Each fire class has distinct extinguishing methods and agents, giving firefighters the information they need to respond appropriately.

In the case of Class D fires, the use of water is often ineffective and can even be dangerous, as it may cause a violent reaction with the burning metals. Instead, specialized extinguishing agents such as dry powder agents are commonly used to suppress these fires safely. Understanding the characteristics that define a Class D fire is crucial for effective firefighting and prevention strategies in environments where combustible metals are present.