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I have noticed that the NBIC R-1 Form does not mention DESIGN in the Certification of Compliance block, and the R-2 Form does. Since the R-1 Form is for Repairs and the R-2 is for Alterations - is it save to conclude that if design is needed them it is an alteration?

They are familiar with CC 2864-2, but there is still a conflict with the 2 code sections. I also had heard that there will be a change to Section II, Part D in the 2021 Edition.

thread292-465770 For 91 material (all product forms), In the 2019 Edition Type 1 and Type 2 has been added to Section II, Part A, but Types 1 and Type 2 has NOT been added to Section II, Part D. What happens when the Code has caused a conflict like this? Design is stating SA-335-P1 with no...

Metengr, that is exactly the issue I was questioning. Clearly the 80% applies to all PWHT below the lower, such as tempering and stress relief. But does it apply to PWHT above the upper, for quenching or normalizing, for the reasons you mentioned? Normally it would not even be an issue as...

I understand how the 80% of PWHT time applies when the PWHT is stress relief. But if your PWHT is Quench and Temper, how does the does the 80% rule apply, possibilities are: PQR - 4 hrs above upper critical (Austenitizing), followed by 4 hrs below lower critical (Tempering) 1) Treat the...