Class D fires involve ______?

Class D fires involve ______?

• A. Combustible metals and lithium ion batteries
• B. Wood and paper
• C. Oil and gasoline
• D. Wood pulp products

Answer: (A)

Fires in this class involve burning metals. Metals such as magnesium, titanium, sodium, and lithium are typical examples, and in some training contexts lithium-containing devices (like lithium metal in batteries) are treated as part of this metal-fire category. Metals burn differently from ordinary fuels and can react with water or certain extinguishing agents, so they require specialized suppression methods. The appropriate approach uses dry powder extinguishing agents designed for metal fires and techniques that remove heat and separate the metal from oxygen, rather than relying on water or standard foam extinguishers. Other fuel types, like wood and paper (ordinary combustibles) or oil and gasoline (flammable liquids), are not metal fires, which is why they’re categorized differently.

Fires in this class involve burning metals. Metals such as magnesium, titanium, sodium, and lithium are typical examples, and in some training contexts lithium-containing devices (like lithium metal in batteries) are treated as part of this metal-fire category. Metals burn differently from ordinary fuels and can react with water or certain extinguishing agents, so they require specialized suppression methods. The appropriate approach uses dry powder extinguishing agents designed for metal fires and techniques that remove heat and separate the metal from oxygen, rather than relying on water or standard foam extinguishers. Other fuel types, like wood and paper (ordinary combustibles) or oil and gasoline (flammable liquids), are not metal fires, which is why they’re categorized differently.