Class D fires involve which materials?

Class D fires involve which materials?

• A. Ordinary combustibles such as wood and paper
• B. Flammable liquids
• C. Combustible metals
• D. Energized electrical equipment

Answer: (C)

Fires involving metals are categorized separately because metals burn at very high temperatures and can react violently with water or standard extinguishing agents. This class covers combustible metals such as magnesium, titanium, sodium, and potassium. They require dry powder extinguishing agents designed specifically for metal fires, which coat and cool the metal without triggering a hazardous reaction. Water, foam, or CO2 extinguishers are not suitable and can make things worse. The other classes describe different materials: ordinary combustibles (wood, paper), flammable liquids, and energized electrical equipment. So the materials in this class are combustible metals.

Fires involving metals are categorized separately because metals burn at very high temperatures and can react violently with water or standard extinguishing agents. This class covers combustible metals such as magnesium, titanium, sodium, and potassium. They require dry powder extinguishing agents designed specifically for metal fires, which coat and cool the metal without triggering a hazardous reaction. Water, foam, or CO2 extinguishers are not suitable and can make things worse. The other classes describe different materials: ordinary combustibles (wood, paper), flammable liquids, and energized electrical equipment. So the materials in this class are combustible metals.