Leak test
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Leakage tests are divided into airtightness tests, ammonia leak detection tests, halogen leak detection tests, and helium leak detection tests. *Airtightness test: The pressure for the airtightness test is the design pressure of the pressure vessel. Explanation: The gas used in the test should be dry and clean air, nitrogen, or some other inert gas ； *For ammonia leak testing, various methods can be used, such as the ammonia-air method, the ammonia-nitrogen method, and the 100% ammonia method. The ammonia concentration, test pressure, holding time, etc., are specified by the designer in the design documents.
Housing sealing, upper sealing, pressure testing time, holding time.