Evaporator leak testing pressure issue
Thread Content
One of our evaporators is leaking. To diagnose the leak, we need to use gas for testing, but the pressure that our company can achieve is only 0.4 Mpa. Will it be impossible to detect the leak in this case? The nameplate indicates a pressure test of 1.96 Mpa (nitrogen has been sent in again; originally, compressed air was planned for leak testing while nitrogen was to be used for the pressure test)
The workers who were under pressure told me that for ordinary leak detection, as long as there is a pressure of 5 kilograms, any leak will become apparent； If this pressure seal doesn’t leak, then it generally won’t leak.
That is the pressure for the endurance test; for the leak test, only the design pressure needs to be met.
Leak testing: a pressure of 4 Kg is sufficient.
What are the operating conditions of this evaporator? The design pressure is 1.9 MPa, with normal operation at around 0.8 MPa? See where you are applying pressure; sometimes a particle happens to block the leak point