Multiple Welder Qualifications Through Single Test Coupon

ASME Section IX permits covering multiple welder qualification through single test coupon. In this article, I will discuss various things that must be kept in mind when opting for qualifying multiple welding performance qualifications in a single coupon. A welder must qualify for each of the processes that he intends to use in production welding. … Read more

Welder Qualification Through Fillet Weld Test Coupon

ASME Section IX permits welding performance qualifications through groove weld coupons as well as fillet weld test coupons. It is for the welding engineer to decide which kind of coupon would be appropriate for his application. In this article we will discuss how to make this choice, and other aspects surrounding welder qualification through fillet … Read more

Retests In Welding Performance Qualification

ASME Section IX provides for immediate retests in welding performance qualification (for both welders and welding operators) if one or more tests do not meet the specified acceptance criteria. The provisions for immediate retesting using mechanical testing, volumetric NDE, and visual examination have been clearly defined in QW 321. This article does not seek to … Read more

Qualification Of Welding Materials For Class 1 Nuclear Components

ASME Section III Part NB, that deals with construction of Class 1 nuclear equipment, requires that all welding materials that is used in the construction of Class 1 equipment conform to the requirements of NB 2400. The Certificate Holder must ensure several aspects in procurement of these materials to ensure conformance to NB 2400. One … Read more