Who must witness the installer perform the standing pressure test?

The standing pressure test is a critical part of ensuring that medical gas systems are installed correctly and function safely. It helps to assess the integrity of the system and confirm that there are no leaks. The verifier or the Authority Having Jurisdiction (AHJ) designee is specifically trained and designated to oversee construction practices and compliance with relevant codes and standards.

Having the AHJ designee witness this test ensures that the procedure adheres to established safety and performance standards. This oversight is essential because medical gas systems are used in healthcare settings where failures can lead to dangerous outcomes for patients. The verifier or AHJ designee verifies that all installation and testing have been conducted properly, thus maintaining the safety and reliability of the system.

This role is crucial, as it provides an additional layer of accountability and expertise that other individuals, such as facility managers, client representatives, or contractor supervisors, may not possess. They might not have the specialized knowledge of the codes, regulations, and best practices that are required for medical gas systems, which is why their presence is not mandated during the pressure test.