How should appliances not included in the pressure test be managed?

Appliances that are not included in a pressure test should be isolated to ensure that they do not affect the integrity and accuracy of the test results. This means either disconnecting them from the gas line or capping the lines leading to them. This isolation is crucial because any gas appliances not under test could potentially introduce leaks that would compromise the pressure test outcome.

By isolating these appliances, you reduce the risk of false readings and ensure that the pressure test accurately assesses the condition of the rest of the gas system. This practice is a key safety and quality control measure in gas systems, as it helps maintain the overall safety and functionality of the installed gas appliances once the system is put back into service.

Choosing options such as leaving appliances connected or exposing them for inspection would defeat the purpose of the pressure test and could potentially lead to dangerous situations if leaks are present from untested appliances. Similarly, covering them with protective casings does not address the issue of pressure testing and will not provide the necessary safety assurances.