This standard was prepared by a formulating committee that included representatives of the API, the American Gas Association (AGA), the Pipe Line Contractors Association (PLCA), the American Welding Society (AWS), and the American Society for Nondestructive Testing (ASNT), as well as representatives of pipe manufacturers and individuals associated with related industries. Steel (See Also Carbon Steel, Stainless Steel, Structural Welding)ĪPI 1104:2021 WELDING OF PIPELINES AND RELATED FACILITIES 22ND EDITION.Qualification: Procedures and Personnel (See Also Certification).Flux Cored Arc Welding (See Gas Metal Arc Welding).Education and Training (See Also Reference).

Cutting (See Also Oxyfuel Welding and Cutting).Example of suggested groupings are shown in 6.2.2, items d and e.įor welder qualification, thickness and OD groupings shown for single qualification are mandatory.įinally, I recommend that you obtain a copy of the PRCI document “Guidelines for Interpretation and Application of API 1104 –Twenty-first Edition” as it provides excellent information regarding anything related to API 1104.Īlthough PHMSA has not yet incorporated the 21st edition of API 1104 by reference into either Part 192 or 195, this document provides the framework your company could use to establish welding procedure qualification, in particular, to the use of dual or triple stenciled materials on different thicknesses. The ranges of outside diameters and wall thicknesses over which the procedure is applicable shall be identified. The same comments apply to the qualification of fillet weld procedures.īe aware that the suggested OD and thickness ranges for WPS qualification are just that: suggested e excerpt below:

Indiscriminately substituted for a material that was used in the qualification test without consideration of the compatibility of the base materials and filler metals from the standpoint of metallurgical and mechanical properties and requirements for pre- and post-heat treatment'. ' The groupings specified in 5.4.2.2 do not imply that base materials or filler metals of different analyses within a group may be There is finally the comment from API 1104 5.4.2.2 that should be examined by your Engineering Group prior to commencing on a WPS qualification program: With respect to OD, some companies qualified on NPS 10 or 12 while some qualified on a variety of diameters. As a suggestion, you could consider using a thickness near 0.500” as this somewhat represents the mid-point of the 3/16” to ¾” suggested grouping. Accordingly, the thickness you select should have an engineering basis you can rely on should the regulator question how you selected these thicknesses for PQR testing. Not generally so for X60 or certainly above. For the lower grade materials such as X42, you could somewhat easily find pipe thicknesses less than 3/16”.

With respect to diameter and wall thickness, for WPS qualification, API 1104 gives suggested groupings, but does not dictate the testing program. However, for you to be completely covered for all combinations from Grade B to X70, with respect to materials alone,the following qualification tests will be necessary: For your example, X70 to X42, your WPS will need to be qualified on X70 material.ĪPI 1104 5.4.2.2 reference follows: “ When welding materials of two separate material groups, the procedure for the higher strength group shall be used”.

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