What potentially happens if a low-pressure refrigeration system is tested with nitrogen in excess of 10 psig?

Testing a low-pressure refrigeration system with nitrogen at pressures exceeding 10 psig can lead to a critical failure of the system's safety device known as the rupture disk. This disk is designed to prevent overpressure situations by providing a safety outlet for the refrigerant or test gas. If the pressure exceeds the rated limit, the disk will rupture to relieve the pressure and prevent potential damage to the system or harm to personnel.

Maintaining the proper pressure during testing is crucial not only for the integrity of the equipment but also for the safety of those conducting maintenance or repairs. This scenario highlights the importance of adhering to the manufacturer's specifications and safety protocols during system testing to avoid catastrophic failures.