What is the proper extinguishing method for Class D fires?

The most suitable approach for managing Class D fires, which typically involve combustible metals like magnesium, sodium, potassium, and others, is to allow the fire to burn out. This is primarily due to the unique properties of the materials involved; many metal fires can react negatively with water or traditional extinguishing agents. Class D fires often burn at very high temperatures, and using water can lead to violent reactions and potentially cause explosions.

In addition, dry chemical extinguishers and CO2 extinguishers are ineffective against Class D fires, as they do not address the combustion of the metals involved. Therefore, allowing the fire to burn out, while taking all proper precautions to ensure safety and prevent the fire from spreading, is the appropriate and safest option. It's crucial for firefighters and responders to recognize the specific type of fire they are dealing with, as the wrong extinguishing method can exacerbate the situation.