Design pressure issues for vacuum pipelines
Thread Content
Clause 3.1.2.3 of the \"GB50316－2000 Code for Design of Industrial Metal Piping\" stipulates that vacuum pipes shall be designed to withstand external pressure. When equipped with safety control devices, the design pressure shall be 1.25 times the maximum difference between internal and external pressures, or the lower of these two values, namely 0.1 MPa; in the absence of such safety control devices, the design pressure shall be 0.1 MPa. Why choose the lower value?
The maximum is 0.1 MPa, so let’s go with the lower value. Hope experts can give some guidance
Isn’t it safer to choose the higher value? I’m not sure if this way of thinking is reasonable; I’d appreciate advice from those who are more knowledgeable!