Hi all,
I have a case where one branch is at high temperature while adjacent pipework cycles from cold to hot.
When calculating stress range, the allowable stress range at branch is calculated using SA=f(1.25Sh+0.25Sh) rather than f(1.25Sc+0.25Sh). Is it due to the fact that branch is at high temperature in both cases?
The Sc is defined as "basic allowable stress at minimum temperature expected during the displacement under analysis"
There is difference in opinion at our place regarding this. In my opinion it is correct to use SA=f(1.25Sh+0.25Sh)but some say it should be f(1.25Sc+0.25Sh) Sc being at ambient temperature.
I would like to have your expert opinion on this.
I have attached the sample CAESAR model herewith.

Many thanks and regards

MW