Issue of the maximum allowable operating pressure
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For a tower equipped with a safety valve and that is airtight, there is a maximum allowable operating pressure. Should the pressure used in the calculations be this maximum allowable pressure?
I don’t really understand it either; during design, we manually enter the test pressure, keeping the design pressure unchanged, and then use the maximum operating pressure as the design pressure to verify the strength of the cylinder head
For pressure pipelines equipped with safety valves, the design pressure should be 1.05 times the maximum operating pressure. Pressure vessels should be the same, right?
No, that’s wrong; it’s about verifying the openings for reinforcement
This post was last edited by SDHZZXM on 2015-12-3 at 15:31. Yes, when entering the values for calculation, the pressure to be used should be the maximum allowable pressure; however, attention should be paid to changing the test pressure...
The maximum allowable operating pressure and the maximum operating pressure are completely different concepts. The design pressure is determined based on the \"maximum operating pressure\"” ； “The “maximum allowable operating pressure” is the pressure that can be tolerated, calculated inversely from the nominal thickness after the wall thickness has been determined based on the “design pressure” and rounded off ； Therefore, the “maximum allowable operating pressure” is higher than the design pressure ； When the design does not specify the \"maximum allowable operating pressure,\" the \"design pressure\" can be used.
I was also confused by this issue before; I wonder if this approach is correct. Please advise: a device equipped with a safety valve must be a leak-proof one, and the maximum allowable operating pressure should be specified in the equipment’s manufacturing drawings. When ensuring leakproofness, the design pressure should be used as a guide. However, the setting pressure of the safety valve must be set according to the maximum allowable operating pressure. As a result, the safe takeoff pressure is greater than the design pressure. It won’t operate when airtight
Sure, of course. Use the one with the highest allowable pressure if it’s available; otherwise, use the design pressure as a default