Test pressure should not exceed ___ psig on any oil tank connected to the piping.

Test pressure should not exceed ___ psig on any oil tank connected to the piping.

• A. 5
• B. 10
• C. 15
• D. 20

Answer: (B)

Testing the piping that feeds an oil tank is done with a safe, limited pressure so you don’t overwork the tank or its fittings. Oil tanks and their components aren’t built to withstand high pressure, and applying more than about 10 psig can cause the tank wall, valves, or seals to fail, creating leaks or a dangerous situation. Setting the test at 10 psig gives enough pressure to reveal leaks without risking damage, keeping the system within what the equipment is designed to handle. Higher pressures would push beyond the tank’s rating and increase the chance of failure.

Testing the piping that feeds an oil tank is done with a safe, limited pressure so you don’t overwork the tank or its fittings. Oil tanks and their components aren’t built to withstand high pressure, and applying more than about 10 psig can cause the tank wall, valves, or seals to fail, creating leaks or a dangerous situation. Setting the test at 10 psig gives enough pressure to reveal leaks without risking damage, keeping the system within what the equipment is designed to handle. Higher pressures would push beyond the tank’s rating and increase the chance of failure.