When designing pressure vessels, a pressure of 6.3 Mpa is required. If an access hatch is to be added, isn’t this value of 6.3 Mpa specified in the standards? Or have I just not found the right standards?
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Manhole code: 21524-2014
Design one by yourself; choose flanges and flange covers with a pressure rating of 6.3 MPa, ensure that the openings for manholes are not too large, and then refer to the standards for manholes when designing the other components as well
Agree with the second floor’s suggestion: using non-standard approaches while referring to standards, SW6 should be able to be calculated