Dear Mariog,

Code is an alive document of our ever learning efforts of mechanical engineer!

I do not think we have taken all the inputs correctly in pipe stress analysis, still!

But, question remains ...If we consider piping inline components designed for secondary load criteria even equipment box,Les similarly by fea like nozzlepro, are we not too conservative regarding pipe support detailiing!

With the case in hand with recurrent weld failure, I have doubt of scc of duplex steel even at not so high temperature due to presence of contaminants.
Reg,
Sam