[MW:23041] P1 to P43 Dissimilar Joint PWHT Requirements

My question is regarding the PWHT requirements for above vessels,

1.Does the shell to nozzle weld edges to be buttered by Er NiCrMo-3 before PWHT and groove welding by Er NiCrMo-3 after PWHT?

YES.

or
2.Or a PQR of dissimilar joint P1 to P43 with PWHT (of P1 requirements) can be used directly?

P43PWHT NOT RECCOMENDED.HENCE GO WITH OPTION ABOVE.


UNF 56 : Does not address such dissimilar joint
UNF-56 POSTWELD HEAT TREATMENT
(a) Postweld heat treatment of nonferrous materials is not normally necessary nor desirable.
Kindly share your experience/recommendations.
Thanks.

--
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
Visit this group at http://groups.google.com/group/materials-welding.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/d58d30c9-1ac9-4f9d-a964-5905542615b4%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.