Hello all,

I am running some calculation. My client ask me to check the Nozzle Lmt Check and Flange Check of the equipments under Design Temperature including Win in 4 directions. In my opinion include Win make extra critical the scenario and overdesign the piping geometry. And, the systems in this condition for stress check are OK with the code compliance.

The calculation is under RToD,Dutch code. However I have the same situation under ASME B31.3.

I would like to know if someone know more information about RToD requirement for Nozzle loads and Flange Analysis in case of win, or some good argument or document to avoid this overdesign.