HG20585-2011 Low temperature and low stress
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In HG20585-2011, the section on low temperature and low stress specifies the requirements for flat heads and flat covers in 5.0.2: What does the \"maximum allowable pressure\" referred to here mean? Please give me some guidance.
This post was last edited by jizhanwei22 on 2017-2-15 at 13:03. Once the thickness of components such as flat heads, flat covers, tube sheets, and flanges is determined, the maximum allowable pressure at a certain design temperature is essentially fixed as well. Maximum allowable pressure, that is, the maximum permissible operating pressure.
In other words, is it the maximum operating pressure calculated based on the effective thickness at the design temperature?
This post was last edited by jizhanwei22 on 2017-2-15 at 13:40. Yes, it basically all relates to the effective thickness. For details, refer to GB150.3-2011; the formula for calculating the maximum allowable operating pressure of key components (such as cylinders, heads, flanges, etc.) is =...
At the design temperature, the maximum allowable operating pressure calculated from the effective thickness..
OK, I understand. Thank you all!
Experts from the Evaluation Committee say that conditions of low temperature and low stress are extremely rare, and standards will exclude design considerations for such situations.
Is it reliable? I wonder when the standards can be revised?