For some pipes where stress should be considered based on experience
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As the title suggests, when going to the previous installation, the owner pointed out that the pipe supports designed back then had shifted due to thermal expansion; in other words, the original pipe design did not adequately address the issue of flexibility. But my question is that the original operating temperature of these pipes was around 250 degrees; however, according to GB 3041 or based on experience, stress should be taken into consideration for these pipes, but it isn’t necessary to use computer simulations for that purpose. So, how are these pipes with temperatures above 100 degrees and below 400 degrees designed? For example, should one deliberately take an extra detour in an open area or add expansion joints? (The previous pipelines were not designed by me, and I am currently unable to get in touch with the former pipeline engineer.) First, thanks to my friends for their help!
……How is it possible to proceed without analysis? Normally, pipes with a temperature of over 100 degrees, or over 150 degrees, require such analysis. Of course, the regulations may vary from one organization to another.
It is a mistaken notion that stress analysis must be performed using computers. Pipelines of the type you mentioned require visual inspection and simple support design.