Class Delta fire involves which materials?

Class Delta fire involves which materials?

• A. Combustible metals, such as sodium, potassium, magnesium, and titanium
• B. Flammable liquids
• C. Wood and paper
• D. Electrical equipment

Answer: (A)

The main idea here is recognizing fire classes by what fuels the fire. Class Delta fires are fires of combustible metals. Metals like sodium, potassium, magnesium, and titanium fall into this category, which is why that option is the correct one. These metal fires don’t respond to ordinary extinguishing agents the same way as other fires; they require a specialized dry powder extinguisher formulated for metal fires. The other descriptions correspond to different fire classes: ordinary combustibles such as wood and paper, flammable liquids, and electrical equipment, which are not metal fires.

The main idea here is recognizing fire classes by what fuels the fire. Class Delta fires are fires of combustible metals. Metals like sodium, potassium, magnesium, and titanium fall into this category, which is why that option is the correct one. These metal fires don’t respond to ordinary extinguishing agents the same way as other fires; they require a specialized dry powder extinguisher formulated for metal fires. The other descriptions correspond to different fire classes: ordinary combustibles such as wood and paper, flammable liquids, and electrical equipment, which are not metal fires.