Sprinkler piping is hydrostatically tested after installation for how long?

The hydrostatic testing of sprinkler piping is a critical procedure that ensures the integrity and reliability of the system after installation. The correct duration for testing is typically set to 2 hours at a pressure of 200 psi. This testing period is important because it allows sufficient time for any potential leaks or deficiencies in the piping system to be identified and addressed.

Testing at 200 psi is chosen because it exceeds the normal operating pressure of most sprinkler systems, providing a safety margin to ensure that the piping can withstand higher pressures than it would typically encounter during operation. This ensures that the components are not only functional but are also safe for long-term use in fire protection.

In contrast, options that suggest shorter durations or lower pressures do not provide the same level of assurance regarding the system's reliability and safety. A one-hour duration might be insufficient to detect potential issues, while a duration of 3 hours at an excessively high pressure could impose unnecessary stress on the piping. The parameters established are designed to align with industry standards and best practices for fire protection systems.