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      bien
      Keymaster

      Welding Procedure Qualification

      • QW-144: final visual inspection for weld surface shall meet QW-194.
      • QW-194: Performance test coupon shall show no cracks and complete joint penetration, with complete fusion of weld metal and base metal.

      Welder Performance qualification.

      • QW-194: Performance test coupon shall show no cracks and complete joint penetration, with complete fusion of weld metal and base metal.

      NOTE:

      • For welder qualification may qualify on product weld, which welding process given in QW-304 may be qualified by volumetric NDE. The weld quality shall also be met construction’s acceptance criteria such ASME B31.3 normal service.
      • Method and acceptance criteria of volumetric NDE shall follow QW-191.
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