ASME B31.3- MPI/LPT on Process Piping Butt Welds
ASME B31.3- MPI/LPT on Process Piping Butt Welds
(OP)
Dear Friends
Base Material - CS & SS - Process Piping - Dia range from 2" to 6". Weld Porcess - GTAW(Root) SMAW (the rest ).
Based on what I've understood above code does not call for MPI/LPT on Butt/Girth Welds. I've done RT as as required in Project approved NDT Plan. Can some one guide to the code section which call for MPI/LPT? I need your guidance urgently. Thanks
Base Material - CS & SS - Process Piping - Dia range from 2" to 6". Weld Porcess - GTAW(Root) SMAW (the rest ).
Based on what I've understood above code does not call for MPI/LPT on Butt/Girth Welds. I've done RT as as required in Project approved NDT Plan. Can some one guide to the code section which call for MPI/LPT? I need your guidance urgently. Thanks





RE: ASME B31.3- MPI/LPT on Process Piping Butt Welds
Did your clients specifications require MT or PT ?
RE: ASME B31.3- MPI/LPT on Process Piping Butt Welds
Reinstament done and commissioning completed.
That's the reason. I want to confirm if MPI requirement required according to B31.3.Thanks for prompt reply
RE: ASME B31.3- MPI/LPT on Process Piping Butt Welds
I have never heard of a client asking for MT on butt welds before but there's always a first time. Much more common to ask for MT on fillet welds (e.g., socket welds) - perhaps this was a mistake ?
RE: ASME B31.3- MPI/LPT on Process Piping Butt Welds