Design temperature of large storage tanks and service temperature of steel
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Please tell me heroes: In large storage tank textbooks and various standards such as API650, GB50341, and SH3046-92, the design temperature of the storage tank is 250 degrees Celsius. How is this temperature determined? And its origin? The operating temperatures just now vary, such as: The service temperature of carbon steel and low alloy steel is generally 300 to 425 degrees Celsius. Is this because the creep limit and lasting strength of the material are considered? Or were other factors considered?
The design temperature of large storage tanks is not higher than 250 degrees Celsius. This is because the design temperature of large storage tanks designed in the United States before API650 and API620 was only 250 degrees Celsius. No one may have designed anything higher than 250 degrees Celsius, so they used 250 degrees Celsius as a benchmark to compile the standard. In the future, the design temperature of large storage tanks may be higher than 250 degrees Celsius, so the standards can be modified accordingly. (This is somewhat similar to reference objects in physics) I don’t know what you guys think, please give your opinion.