Visual inspection for test coupon in ASME IX

Welding Procedure Qualification.

  • QW-144: Visual inspection for final 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 welds, which welding process given in QW-304 [GTAW, SMAW, SAW, GMAW (except short-circuiting mode)] may be qualified by volumetric NDE. The weld quality shall also be met construction’s acceptance criteria.
  • Method and acceptance criteria of volumetric NDE shall follow QW-191.
  • The product welds do not subject to destructive test.
  • Welding variables for welder are accordance with QW-350.

FAQ

  • The different between test coupon and product welds?

see definition in QW-109.2 or AWS A3.0.

1 Like