Is a 6G qualified welder qualified to weld a jacket leg can to a plate girder or does he have to qualify to 6GR. It is a T connection however the angle bevel does not change as in pipe-pipe connection and I cannot find conclusive definition in AWS D1.1 for T K Y for plate-pipe connection, it only mentions plate-plate or pipe-pipe. Any ideas?
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Welder Qualification
- Thread starter salohcin
- Start date
salochin:
I would interprete the D1.1 code as follows:
1.) For a T, Y, K connection a 6GR peformance qualification would be required. The 6G is a test used to verify the ability to weld tubulars in all positions (within thickness and diameter limitations), not with the restricted access to the joint such as a 6GR welder would encounter. Refer to AWS D1.1:2002, Table 4.9.
2.) While your application involves tubing to plate, qualification of a tubular product qualifies plate (within position and thickness limitations) also in accordance with AWS D1.1:2002, Table 4.9.
A number of my clientele use plate/tube/pipe to manufacture their structural products, many with acute angles and T, Y or K connection types. The procedures and personnel all qualify on 6GR's for these applications.
I would interprete the D1.1 code as follows:
1.) For a T, Y, K connection a 6GR peformance qualification would be required. The 6G is a test used to verify the ability to weld tubulars in all positions (within thickness and diameter limitations), not with the restricted access to the joint such as a 6GR welder would encounter. Refer to AWS D1.1:2002, Table 4.9.
2.) While your application involves tubing to plate, qualification of a tubular product qualifies plate (within position and thickness limitations) also in accordance with AWS D1.1:2002, Table 4.9.
A number of my clientele use plate/tube/pipe to manufacture their structural products, many with acute angles and T, Y or K connection types. The procedures and personnel all qualify on 6GR's for these applications.
- Thread starter
- #3
salochin:
Without knowing the specifics of your application, the only technical advice I could provide in addition to what I've already posted is:
a.) If the welder has qualified on plate, he/she is qualified to weld tubulars >24" (600 mm) in diameter within position and thickness limitations per Note 3 of the above referenced table.
b.) Refer to AWS D1.1:2002, Figure C4.1 for examples of tubular welds that do not require qualfication of a tubular product by the welder.
The best advice I can give to you at this point is to submit a formal inquiry to the AWS in the format specified in Annex F of the D1.1 code and state your case. In the past a phone call could help to obtain an unofficial and personal opinion by one of the code committee members, typically the chairperson, but that may not be the current situation.
Advertizing is prohibited in these forums (which I don't mind) and any personal information the forum member wishes to divulge can be found by clicking the handle (name) of the individual providing a post or reply.
Without knowing the specifics of your application, the only technical advice I could provide in addition to what I've already posted is:
a.) If the welder has qualified on plate, he/she is qualified to weld tubulars >24" (600 mm) in diameter within position and thickness limitations per Note 3 of the above referenced table.
b.) Refer to AWS D1.1:2002, Figure C4.1 for examples of tubular welds that do not require qualfication of a tubular product by the welder.
The best advice I can give to you at this point is to submit a formal inquiry to the AWS in the format specified in Annex F of the D1.1 code and state your case. In the past a phone call could help to obtain an unofficial and personal opinion by one of the code committee members, typically the chairperson, but that may not be the current situation.
Advertizing is prohibited in these forums (which I don't mind) and any personal information the forum member wishes to divulge can be found by clicking the handle (name) of the individual providing a post or reply.
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