What if there is an established history of using backing in a 5G (pipe to flange) where the backing was not CJP at the butt joint of the backing material and it still passed UT. And by history I mean 20 to 30 years of history, with no in-field failures.
Would a PQR,WPS, and a documented test coupon specifying this situation be required to avoid outside inpsection rejecting the part?
i think that it would need the approval of the engineer. in d1.1 anything is possible, as long as the EOR stamps it.
Had posted before, but trying to find a more PC way of saying it.
Better get the EOR to sign off on this based on history. I don't see how they "passed" UT legitimately to begin with. It would be ill advised to use that as your reasoning for getting an "outside" agency to buy off on it.
Regards,
Gerald
I agree with Hogan and Gerald. The EOR is ultimately responsible.
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