When are piping systems required to be tested for leaks?

Piping systems are required to be tested for leaks after any maintenance work is completed to ensure the integrity and safety of the system. This testing helps identify any potential leaks that may have occurred during the maintenance process, making sure that all connections are secure and that there are no weaknesses in the piping that could lead to hazardous situations, such as gas leaks. Regular testing is a critical part of maintaining a safe gas supply system, as leaks can pose serious risks to health and safety.

If the piping systems were only tested when first installed, or before the installation of appliances, it could lead to undetected leaking conditions after repairs or adjustments are made. Periodic testing can be beneficial, but the primary focus should be on the need for testing after any work has been performed to maintain system integrity and safety.