S9074-AQ-GIB-010/248 Rev 1
4-2.5 APPROVAL OF PROCEDURE QUALIFICATION FOR SPECIAL WELDS. In addition to the procedure qualification test data and procedure, submittals shall include a description of the welding process, evaluation method, and the proposed welding performance qualification tests (see 5-2.7). NAVSEA approval of procedure qualification data shall be obtained for special welds, as defined in 3-2.15, for the following areas:
a. Surface ship primary structure and superstructure. b. Submarine pressure hull structure. c. Submarine intermediate pressure tanks. d. P-1 and P-LT piping. e. A-1, A-2, A-F, and A-LT pressure vessels. f. M-1, Category A and B, and M-2 Category A machinery.
g. T-1 and T-2 turbines. h. Exothermic welding.
For other special welds, approval of procedure qualification data shall be obtained from the authorized representative per 4-2.3, or NAVSEA. The authorized representative shall provide a copy of submittals and their approvals to NAVSEA for information. 4-2.6 WAIVER OF QUALIFICATION. Qualification tests for welding on assemblies, the possible failure of which is remote and would not result in danger to the ship, personnel, or components, such as identification plates, galley equipment, furniture, fixtures, and miscellaneous outfitting, may be omitted provided this omission is permitted by the applicable fabrication document or is approved prior to the commencement of such work. 4-2.7 QUALIFICATION LEVELS. 4-2.7.1 General. Except as permitted by 4-2.6, when this document is specified in the applicable fabrication document or other governing specification, procedure qualification is required for base materials listed in table 7-1; filler materials listed in table 7-2; welding processes listed in table 7-3, 4-4.3, and 4-4.4; and special welds per 3-2.15 (for friction stir, see Appendix A). Table 7-3 may be used to extend procedure qualifications to base material/filler metal combinations other than those specifically welded and tested. The essential elements for welding each base material/filler metal combination shall be incorporated into the welding procedure and be in accordance with the requirements of this document and the applicable fabrication document. 4-2.7.2 Level I. This qualification level covers (1) the initial qualification of any welding procedure for the fabrication welding of wrought or cast material or the repair welding of wrought or cast material by any activity and (2) requalification of welding procedures due to variations specified by 4-7. Approval of the required level I welding procedure qualification shall be obtained from the authorized representative, except as noted in 4-2.5. This qualification level covers any welding procedure to be qualified by performing the destructive and nondestructive tests required by this document. Qualification for fabrication welding of cast or wrought material shall also qualify for repair welding of cast or wrought material within the limits of the qualified procedure. 4-2.7.3 Level II. This qualification level (1) governs requalification of procedures already level I qualified where changes specified by 4-8 are made, (2) involves reduced testing in most instances (see 4-2.7.3.1) as compared to level I qualification, and (3) does not require approval of qualification test data in most instances (see 4-2.7.3.2).
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