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Multiple Choice

A canister of titanium fires requires which extinguisher class?

Metal fires require a Class D extinguisher. Titanium is a combustible metal, so it needs a dry powder extinguisher formulated for metal fires. The powder smothers the flame and absorbs heat without reacting with the metal, which is essential because water, CO2, or ordinary foam can be ineffective or unsafe on metal fuels. Class A extinguishers cover ordinary combustibles like wood and paper, Class B covers flammable liquids, and Class C covers energized electrical fires; none are appropriate for titanium metal fires. Using the correct Class D extinguisher helps prevent re-ignition and reduces the risk of a hazardous reaction.

Metal fires require a Class D extinguisher. Titanium is a combustible metal, so it needs a dry powder extinguisher formulated for metal fires. The powder smothers the flame and absorbs heat without reacting with the metal, which is essential because water, CO2, or ordinary foam can be ineffective or unsafe on metal fuels. Class A extinguishers cover ordinary combustibles like wood and paper, Class B covers flammable liquids, and Class C covers energized electrical fires; none are appropriate for titanium metal fires. Using the correct Class D extinguisher helps prevent re-ignition and reduces the risk of a hazardous reaction.