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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...

Ed, Thank you for your input. I don't have access to A262, so I'm flying blind. I've asked the heat exchanger manufacturer to quote (cost and time) S7 and A262E testing for the heck of it. I don't have any senior resources at work, so I learn by 'doing' where ever I can. Thanks! Side note: I...

Thank you for the replies, gentlemen. There are no notes on the initial material inspections and I'm not a materials expert. EdStainless, I need to keep the material (316) the same to keep the project on a maintenance budget, not capital dollars. The original HX lasted 20 yrs, so I need the...

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...