Guys,
The equipments is in cyclic pressure service from 0 to 16 Kg/cm^2 g. Nozzle neck, Flange and discontinuity junctions on shell are already verify for fatige life check by FEA as per ASME SEC VII DIV 2 PART 5 & Annexure 3F.
For stud fatigue life evaluation. I had calculate operating bolt...