What is the standard procedure for performing a hydrostatic test?

The standard procedure for performing a hydrostatic test involves increasing the system pressure to a specified level, usually 50 psi above the system's normal operating pressure, or a specific maximum pressure set by regulations, and maintaining that pressure for a designated duration. This is essential for evaluating the integrity and leak-proof nature of the system.

In this case, pumping up to 200 psi or 50 psi above the system's pressure for a duration of 2 hours allows for a thorough assessment of the system's performance under pressure. Maintaining pressure for a longer period helps ensure that any potential leaks can be detected accurately, as pressure drops can indicate issues that require attention. This standard procedure is in line with safety practices and testing protocols in the sprinkler fitting industry, ensuring the reliability of installed systems.

The other procedures mentioned may not adhere to the best practices for hydrostatic testing, as they either apply insufficient pressure, a shorter duration, or methods that do not capture the same level of scrutiny for identifying leaks and system integrity.