I'm working on calculating torque values for B16.5 lap joints. Bolt stress limits are given for weldneck and slip-on flanges in PCC-1 Appendix O, but not for lap joints. WRC Bulletin 538 is mentioned as a resource in O-5.1. It is entirely possible that I'm misinterpreting the code.
1) Does WRC...
Background:
I have a heat exchanger with SA-249 TP31600 tubes that I'm looking to replace in-kind. It does not have the best equipment records, so intergranular corrosion may, or may not, be an issue. Per SA-249, a supplementary inspection is to test for intergranular corrosion per ASTM A262...