S9074-AQ-GIB-010/248 Rev 1
CHAPTER 4 WELDING PROCEDURE QUALIFICATION
4-1 SCOPE. This section provides general requirements for welding procedures, including Standard Welding Procedure Specifications for Naval Applications (SWPS-Ns), and their qualification. Specific qualification requirements for the categories listed below shall be as specified in 4-4. For friction stir, including repair of friction stirred material, specific qualification requirements shall be in accordance with Appendix A in addition to the general requirements of 4-2. a. Groove welds and fillet welds (manual, semi-automatic, automatic, mechanized, and robotic welding). b. Fillet welds – welding over primer coated surfaces. c. Weld surfacing (build-up, buttering, hardfacing, and cladding). d. Dissimilar metal welds. e. Resistance welding. f. Stud welding. g. Welds made without adding filler material (autogenous welds). h. Seal, pipe socket, and tube-to-tubesheet welds. i. Tube-to-header seal welds. j. Special welds. k. Lock welds. 4-2 GENERAL REQUIREMENTS. 4-2.1 RESPONSIBILITY. When this document is specified by the applicable fabrication document or other governing specification, each activity shall prepare written welding procedures, and shall perform the required tests to qualify these procedures except (1) for SWPS-Ns conforming to Appendix C and (2) as specified by 4-2.6. The activity shall notify the authorized representative a minimum of 72 hours prior to the conduct of procedure qualification testing and, where applicable, first article testing and afford him or her the opportunity to observe the welding of the test assemblies and the performance of the required nondestructive and destructive testing. The 72-hour time limit may be modified upon agreement between the authorized representative and the activity. Such observation shall be at the discretion of the authorized representative. 4-2.1.1 SWPS-Ns. SWPS-Ns are acceptable for use subject to the requirements of Appendix C, including completion of a verification weld; approval of qualification test data is not required for SWPS-Ns. 4-2.1.2 Qualification Welding. Personnel welding qualification test assemblies (including SWPS-N verification welds) shall be regular employees of the activity (i.e., not subcontractors or temporary specialists) and under the full supervision and control of the activity. Welding of qualification test assemblies should be accomplished at one of the activity’s sites with the activity’s welding equipment or equipment similar to that being acquired by the activity; if welding is performed at a s ite other than the activity’s site, the activity’s employee(s) responsible for developing the procedure being qualified and ensuring that it is correctly implemented shall also be present and directing the activity’s welder/operator during all welding.
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