I have a Div 1 vessel(1 1/4Cr-1/2Mo material) in cyclic service, with pressure and temperature flutuated at every 48 hours (600psi-100psi-600psi with 100degF-600degF-100 degF). It will have 3650 cycles for 20 years.
I try to use Div 2, AD-160.2, Condition B & Appendix 5 to see if the fatigue...