Friends, our shop is a holder of ASME U stamp as well as National Board R stamp. that being said this question pertains to a vessel under new construction using SA-516-70 material at .375 thickness. we have cut our shell plate on our plasma table to the drawing specs, the shell has 1 20" opening as well as 2 @ 2" and 1 @ 6" all to be fitted with sa-106 pipe nozzles and flat face slip on flanges. keep in mind shells are rolled but no nozzles have been installed as of yet. at this point the customer has requested a different location of the openings on the shell. we are going to have to cut a new 6" opening and patch the existing 6" opening. plans are to use drop from the same material for the patch. my questions are would this be considered a non-conformity or a repair and to what extent of NDT would be required. i have the same question in to my AI waiting for a response but want others opinions on this.
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