What is a Class D fire primarily associated with?

A Class D fire is primarily associated with combustible metals, such as magnesium, sodium, and potassium. These types of fires occur when these metals are involved in a combustion process, which can result in unique and hazardous fire behavior. The distinctive characteristic of Class D fires is that they require specialized extinguishing agents due to the reactive nature of the combustible metals. Traditional water or foam extinguishing agents are ineffective and can even worsen the fire by causing violent reactions, while specific Class D fire extinguishing agents, such as dry powder extinguishers, can smother the flames and effectively cool the burning metals.

Understanding the specific nature of Class D fires is crucial for proper fire safety and response protocols in environments where such metals are used, stored, or processed. Recognizing the appropriate response helps prevent escalation and ensures effective fire control, protecting both personnel and equipment.