What is the acceptable air pressure for fiberglass reinforced plastic (FRP) tanks up to 12 feet in diameter during a pre-installation test?

The acceptable air pressure for fiberglass reinforced plastic (FRP) tanks up to 12 feet in diameter during a pre-installation test is 3 pounds per square inch. This pressure is established to ensure that any potential leaks or weaknesses in the tank can be detected before installation. It is crucial to conduct this test at the specified pressure to verify the integrity of the tank and to ensure it meets safety and regulatory standards.

Using the correct air pressure during the pre-installation test helps to minimize the risk of leaks once the tank is operational. A pressure that is either too low may not effectively reveal leaks, while a pressure that is too high could overstress the tank and potentially cause it to rupture. Therefore, maintaining the right balance is essential for ensuring the reliability and safety of the tank in future operations.