How to calculate the hydrostatic test pressure for blind flanges
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I would like to know how to calculate the thickness required for a pressure test of a blind plate. Should it be calculated using the strength formula for blind plates? Should we still use a yield strength of 90% for the verification? Is there any standard that provides a formula for calculating the thickness required for hydrostatic testing of blind flanges?
Appendix to HG/T 21547 provides the method for calculating blind plate thickness
The pressure during compression is 50 degrees; it is calculated in SW6, and if the result is acceptable then it’s fine； Except for components such as cylinder heads, where the thickness is determined by initial film stress, 0.9REL cannot be used for measurement