What is the initial pressure test pressure for a category 2 system?

The initial pressure test pressure for a category 2 medical gas system is set at a minimum of 1.5 times the maximum allowable working pressure, but additionally, it establishes a baseline minimum pressure of 150 psi. This requirement ensures that the system is capable of withstanding pressure fluctuations and potential leaks that could occur during operation or maintenance. By using a standard methodology of testing at an elevated pressure, inspectors can ascertain the integrity of the system and ensure it meets safety requirements put forth by relevant standards and guidelines.

Testing at this high limit is vital for maintaining safety in medical environments where gases are essential for patient care. The 1.5 factor accounts for factors like pressure surges, thermal expansion, and other conditions that may affect system performance. Thus, starting from a threshold of 150 psi allows for a sufficient safety margin, ensuring that even minor breaches would be detected during the testing process.