Air cooled ammonia systems should be tested at what pressure?

Air-cooled ammonia systems should be tested at 300 psi because this pressure is established as a standard testing pressure to ensure the integrity and safety of the system. Testing at this pressure allows for the detection of any leaks, weaknesses, or potential failure points in the piping and components.

This testing pressure is crucial considering ammonia's properties and the potential hazards associated with its leakage. Performing the test at a high enough pressure—like 300 psi—ensures that the system can operate safely under normal operating conditions, which generally involve lower pressures than the testing pressure. By verifying that the system can withstand this elevated pressure, operators can ensure reliability and compliance with safety regulations.

When used as a standard, 300 psi balances the need for rigorous safety testing while aligning with industry practices for technology involving refrigerants like ammonia.