What does a Class D type fire involve?

A Class D type fire specifically involves combustible metals, which include materials such as magnesium, titanium, sodium, and potassium. These metals burn at very high temperatures and can react violently with water or other substances, making their fires particularly dangerous and challenging to extinguish. The handling of Class D fires typically requires specialized extinguishing agents that are not water-based, such as dry powder agents designed for metal fires.

In contrast, the other types of fires involve different materials: wood and paper are classified under ordinary combustibles (Class A), combustible liquids fall within Class B, and ordinary combustibles as a category includes items like textiles and plastics. Therefore, identifying Class D fires as those involving combustible metals is crucial for effective firefighting and safety protocols.