A dry chemical extinguisher rated 60-B is capable of extinguishing a ____ flammable liquid fire.

A dry chemical extinguisher rated 60-B is capable of extinguishing a ____ flammable liquid fire.

• A. 40 ft
• B. 120 ft
• C. 60 ft
• D. 150 ft

Answer: (C)

The key idea is understanding extinguisher ratings. The B rating means the extinguisher is suitable for flammable liquid fires (like gasoline, solvents). The number that accompanies the B rating isn’t about its power in pounds or volume; it indicates the approximate surface area of the liquid fire the extinguisher can cover. So a 60-B extinguisher is designed to handle fires over about 60 square feet of liquid surface. In the test’s wording, that level of capability is reflected as 60 ft, meaning up to roughly 60 square feet of flammable-liquid fire. The other numbers would correspond to different sized fires and aren’t within the rating for this extinguisher. This helps you match the extinguisher to the hazard: liquids require B-rated equipment, and the number shows how large a fire area it can effectively control.

The key idea is understanding extinguisher ratings. The B rating means the extinguisher is suitable for flammable liquid fires (like gasoline, solvents). The number that accompanies the B rating isn’t about its power in pounds or volume; it indicates the approximate surface area of the liquid fire the extinguisher can cover. So a 60-B extinguisher is designed to handle fires over about 60 square feet of liquid surface. In the test’s wording, that level of capability is reflected as 60 ft, meaning up to roughly 60 square feet of flammable-liquid fire. The other numbers would correspond to different sized fires and aren’t within the rating for this extinguisher. This helps you match the extinguisher to the hazard: liquids require B-rated equipment, and the number shows how large a fire area it can effectively control.