The pictograph showing a flame and a gear identifies which class extinguisher?

The pictograph showing a flame and a gear identifies which class extinguisher?

• A. Class A
• B. Class B
• C. Class C
• D. Class D

Answer: (D)

Fires are labeled by the material that’s burning, and the pictograms on extinguishers show which type of fire a given extinguisher can handle. A symbol that shows a flame paired with a gear signals a fire involving combustible metals, such as magnesium or titanium. Those metal fires require a Class D extinguisher with a specialized dry-powder agent that blankets the metal and cools or smothers the flame without reacting with it. Using water or other standard extinguishing agents on metal fires can be dangerous or ineffective, so the gear-and-flame symbol points to the metal-fire extinguisher option.

Fires are labeled by the material that’s burning, and the pictograms on extinguishers show which type of fire a given extinguisher can handle. A symbol that shows a flame paired with a gear signals a fire involving combustible metals, such as magnesium or titanium. Those metal fires require a Class D extinguisher with a specialized dry-powder agent that blankets the metal and cools or smothers the flame without reacting with it. Using water or other standard extinguishing agents on metal fires can be dangerous or ineffective, so the gear-and-flame symbol points to the metal-fire extinguisher option.