The maximum allowable size for approved safety cans for flammable or combustible liquids is how many gallons?

• A. Three
• B. Two
• C. One
• D. Five

Answer: (D)

Safety cans are designed to store flammable or combustible liquids safely in portable amounts, with built-in features like a flame arrestor and a spring-closing cap to reduce ignition risk. To keep handling practical while limiting the potential fire load, regulations set a maximum capacity for these approved containers. The largest size allowed for an approved safety can is five gallons, which balances ease of use with safety. You’ll still see smaller sizes, like one or two gallons, for lighter tasks, but five gallons is the defined upper limit for these containers.