When welding to the requirements of AWS D1.1, the 6GR test is required to qualify the welding procedure and the welder that will weld T, K, and Y joints without backing. Since the root is already welded, the welder depositing any subsequent weld metal is welding with backing. Table 4.10 (D1.1:2006) for welder qualification has a footnote that allows the welder welding with backing to be tested using the 6G test with or without backing.
Hi Al,
Hope you had a good Xmas with the family.
Would the requirement for the restriction ring not be applicable to all runs - root, fill & cap ?
Would they not be required (by way of a 6GR weld test) to prove they can weld with a restriction thereby simulating the T,K & Y joint for all runs ?
Cheers,
DD
Thanks for the happy tidings. I hope you enjoyed the holiday with your new family as well. It had to be warmer where you are than here in the cold Northeast!
I was thinking along the same lines as you until I read all the footnotes and reviewed the figures they reference. The edition I have on hand in my computer is the 2006 edition of D1.1, but I don't recollect any changes that would affect the table I referenced.
