Regarding the pressure testing standard for the jacket of a reactor, what multiple of the design pressure is specified? How long is the holding time?
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Now, a pressure test is to be conducted on the jacket of a reactor; what should the water pressure be in relation to the designed pressure of the jacket? What is the holding time? What is the air pressure then?
Is a reaction kettle a pressure vessel? For general equipment, a tightness test is conducted, while for pipes, a strength test is performed. The tightness test seems to involve a pressure level that is 1.2 times the normal pressure. The strength test is at 1.5 times the design pressure. First, pre-pressurize at the design pressure for 10 minutes with no leakage, and then pressurize at the test pressure for 30 minutes.
1.5 times, as specified in the standard GB
Ratio of design pressure × 1.25 × allowable stress