A pressure test shall NOT be less than what value regardless of design pressure?

The minimum pressure test value necessary is established by the relevant industry standards and regulations, such as those outlined by the National Fire Protection Association (NFPA) and the American National Standards Institute (ANSI). The correct answer indicates that for any pressure testing on propane systems, the pressure must not drop below 3 psig. This baseline is critical because it ensures that the integrity of the propane system is adequately tested under sufficient pressure to reveal any potential leaks or weaknesses that might not be visible at lower pressures.

A pressure test lower than this standard may not provide a reliable assessment of the system’s safety and functionality. The 3 psig threshold serves to better simulate the conditions the system will experience in actual use, ensuring that any defects or failures can be identified and addressed prior to operation.