Secondary containment is intended to contain leaks from which source?

• A. building foundations
• B. the environment
• C. the primary tank or line
• D. leaks from aboveground piping

Answer: (C)

Secondary containment is a second barrier around the primary container that catches any fluid if the container leaks, preventing spills from reaching the environment. The source it is designed to contain is leaks from the primary tank or line—the container itself and its piping. It’s not meant to hold leaks from the environment. While a leak from aboveground piping would originate in the primary system, the focus is on the primary tank or line as the source that needs containment.