Postweld heat treatment and R-stamp
Postweld heat treatment and R-stamp
(OP)
have a vessel that has already been postweld heat treated. pipe guide clips are being welded to the shell. i'm pretty sure the vessel doesn't need to heat treated again according to table ucs-56. does the vessel need to r-stamped? please advise.





RE: Postweld heat treatment and R-stamp
RE: Postweld heat treatment and R-stamp
RE: Postweld heat treatment and R-stamp
RE: Postweld heat treatment and R-stamp
-Christine
RE: Postweld heat treatment and R-stamp
RE: Postweld heat treatment and R-stamp
Just a side note - let me be perfectly clear about this, the alternative welding methods in the NBIC were never intended to circumvent the requirements in the ASME B&PV Code. They are provided as an option in the event PWHT cannot be performed without harm to the completed vessel or intended service.
RE: Postweld heat treatment and R-stamp
RE: Postweld heat treatment and R-stamp
RE: Postweld heat treatment and R-stamp
RE: Postweld heat treatment and R-stamp
RE: Postweld heat treatment and R-stamp
RE: Postweld heat treatment and R-stamp
They may want to see the welding,temper bead procedure with the proper preheats.