Dear Mr.Binoy,
Not necessary , it depends on project spec. and how confident in working system. For me , we will perform PMI internally anyway to double check correct material grade and correct welding rod.
Be aware that some PMI spec. require to check Carbon on high or low carbon stainless such as 316L or 347H , etc. Normal PMI cannot perform this check and you have to use portable spectrometer which will be much more costly. You have to review PMI spec. and material you are welding carefully.
Regards,
C.Nopadon
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Binoy Soman
Sent: Wednesday, February 27, 2013 1:10 AM
To: materials-welding@googlegroups.com
Subject: [MW:16879] PMI on Stainless Steel Welds
Dear Experts,
In a project, Is it always necessary to do PMI on all Stainless welds or whether it is a clent requirement only. Code followed is ASME B 31.1
S.Binoy
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