Welder performance qualification for piping process

Accordance with ASME IX,
Does three or more welder qualify on the same test coupon and thickness requirement?

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Yes, see table QW-452.1(b), note 3 and QW-306.

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Can 3 welders be done on a product joint?

Assume SMAW (Welder 1) and FCAW (welder 2) and SAW (welder 3)

Yes, If they qualified the test coupons, they can do on product welds.

Interpreattion number: IX-77-14

  • Question: May more than one welder perform welding on a joint made by a single process provided each welds only that portion of the thickness for which he is qualified, and provided the procedure is qualified?

  • Reply: More than one welder may perform welding on a joint made by a single process provided each welds only that portion of the thickness for which he is qualified, and provided the procedure is qualified.

Interpreattion number: IX-15-08

  • Question: Can Welder 1 and Welder 2, both qualified to deposit 1/2" (13 mm) using the Gas Tungsten Arc Welding (GTAW) process, each deposit 1/2 in. (13 mm) into a 1 in. (25 mm) groove-weld thickness, with Welder 1 depositing the first 1/2 in. (13 mm) of weld metal and Welder 2 depositing the remaining 1/2 in. (13 mm) of weld metal?

  • Reply: Yes.

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