Calculation of thermal stress in the outlet pipeline of a safety valve
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As the title suggests, the probability of a safety valve activating during operation is low. Is it necessary to perform pipe and structural stress calculations for the pipeline connected to the safety valve’s outlet? Moreover, the outlet of a safety valve usually leads to the main vent pipe, and such pipes are generally designed to be heat-resistant. If stress in the pipe is to be calculated, is the design temperature taken as the discharge temperature?
In my opinion, for stress calculations, the design temperature should not be the direct discharge temperature.
Depending on the discharge location at the outlet of the safety valve and the nature of the material being discharged, it is generally necessary to carry out calculations.
The design temperature is determined based on the emission temperature plus a certain margin.