If you qualify a welder to a B-U2-GF joint design (Single V groove weld with backgouge / weld), does this also qualify the same welder to a B-U2a-GF (Single V groove weld with backing material) in production welds under the D1.1 or 15.1 specification?
If I'm not mistaken, if you add backing you don't have to requal. If you remove backing, I tihnk you do. Don't have D1.1 in front of me, but I tink I read that one before.