Yes R stamp required if the welding is on pressure part. PWHT is required if the vessel is originally heat treated. Check the MDR for details. You can check the PWHT process as recommended in NBIC and original code of construction.
The question is incomplete as you have not indicated if the vessel is code stamped and what code was stamped. Also what is th e reason for fixing baffle plates now. If it is a new addition, then the design needs to be revisited too.
On Mon, Jan 2, 2017 at 12:29 AM, 'Ali Bhatti' via Materials & Welding <materials-welding@googlegroups.com> wrote:
Dear Experts
We have one Vessel to fix baffle plates . Vessel is under service since 9 years. Shell thickness is 38 mm and baffles plates thickness will be 7mm. My question are:
1. Is R-stamp required or not? 2. Is local PWHT required or not?
Please share / send me answer with reference of codes
Thanks and Best Regards
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