At Randy's Speedee Oil Change facility, which fire extinguisher rating should an untrained technician use to put out a fire in a 6-by-9-foot oil-overflow catch tank?

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Multiple Choice

At Randy's Speedee Oil Change facility, which fire extinguisher rating should an untrained technician use to put out a fire in a 6-by-9-foot oil-overflow catch tank?

Fires involving flammable liquids require a Class B extinguisher. The rating on a B extinguisher shows the approximate size of a fire it can control, measured in square feet of surface area. The oil catch tank in question is 6 by 9 feet, which equals 54 square feet. So you want an extinguisher that can handle about a 54-square-foot B-rated fire. That makes the option with the 54-square-foot capability the best fit. The smaller-area ratings would not reliably control a fire of that size, which is why they aren’t suitable.

Fires involving flammable liquids require a Class B extinguisher. The rating on a B extinguisher shows the approximate size of a fire it can control, measured in square feet of surface area. The oil catch tank in question is 6 by 9 feet, which equals 54 square feet. So you want an extinguisher that can handle about a 54-square-foot B-rated fire. That makes the option with the 54-square-foot capability the best fit. The smaller-area ratings would not reliably control a fire of that size, which is why they aren’t suitable.

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