How should the allowable parameters for regular inspections of pressure vessels be filled in?
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As shown in the figure, I would like to ask what practical significance the operating pressure and operating temperature specified in the container design data sheet have. For example, if the design pressure is 0.35 MPa and the operating pressure is 0.101 MPa, why isn’t ≤0.35 MPa specified?； Design temperature: 160/-19.9, operating temperature: 18.7/6.3 – why isn’t it written as -19.9 to 160℃? Additionally, during the regular inspection of this pressure vessel, since the vessel is in good condition, should the allowable operating pressure be specified as ≤0.35 MPa or 0.101 MPa? ； Should the allowable operating temperature be specified as -19.9-160℃ or as 6.3-18.7℃? Thank you.
You’ve asked this question in a thread more than once; once you read the definition of working pressure, you should understand it. No one would use design pressure as operating pressure, as that is not allowed by standards. Exceeding the working pressure constitutes overpressure operation, which is prohibited by laws and regulations. It is important to understand that operating under overpressure means exceeding the operating pressure, not the design pressure.