What would be the hydro-test pressure for a vessel with MAWP 311 psi, rolled from SA516-70N, with .875" nominal thickness? And how is this calculated. Max temp. is 230F and Min is -20F
Need to weld attachments to the inside of the pressure vessel (to the shell) the attachments are internals support. Vessel has been in service for approx. 9 mos, found problem during shutdown. Can these fillets weld be made with out a hydro-test? If so which code governs and is an AI responsible...