R stamp requirements
R stamp requirements
(OP)
Hi all,
If the Stainless Steel bolts of a U-stamped Heat exchanger body flange (Channel-tubesheet-shell) are going to be replaced with Carbon Steel bolts, would that need R stamp on the Heat exchanger?
Thanks
If the Stainless Steel bolts of a U-stamped Heat exchanger body flange (Channel-tubesheet-shell) are going to be replaced with Carbon Steel bolts, would that need R stamp on the Heat exchanger?
Thanks





RE: R stamp requirements
RE: R stamp requirements
Keep in mind if the replacement bolt material has a lower allowable stress than the original bolt material then this activity becomes an R Stamp Alteration (see 3.4.3(g) of the NBIC Part 3).
RE: R stamp requirements
thread286-398842: R stamp requirements
RE: R stamp requirements
Regards
r6155
RE: R stamp requirements
-Christine