How is the pressure for the leakage test determined? Is there any basis for it?
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In GB150, only the pressure for gas pressure testing is specified in the leakage tests; is there any standard for specifying the pressures for other types of tests?
Refer to Appendix of standard HG/T20584-2011
Based on the specific testing standards, such as ammonia leak detection, NB 47013.8
Someone else asked that it depends on what type of special equipment it is; you need to find the corresponding regulations. For pressure vessels, refer to TSG21-2016; there are more guidelines available for pressure pipelines. Only the standards cited in regulations are subject to mandatory enforcement. GB/T150-2011 is a recommended standard and requires consistency with TSG21-2016. The pressure for the airtightness test of pressure vessels shall be the design pressure, and the test is carried out after the vessel passes the airtightness test.