S9074-AQ-GIB-010/248 Rev 1
4-6.2 MAINTENANCE OF RECORDS. The approved procedure qualification reports, and all level II qualification reports, shall be retained by the activity as long as the procedure is applicable. Each qualifying activity shall retain the pertinent qualification test data, destructive test specimens and reports, and nondestructive test result reports, including radiographs, until written approval of the qualification data is obtained; for level II qualification reports where approval is not required (see 4-2.7.3.2), all of these items shall be retained for at least 12 months following submission of the report, and shall be provided upon request. 4-7 CHANGES REQUIRING LEVEL I REQUALIFICATION OF PROCEDURE. New welding procedure qualification test data shall be submitted to the authorized representative for approval when any of the changes listed herein are made in the welding procedure. Changes other than those listed in this paragraph and those listed in 4-8 for level II qualification may be made in a welding procedure without the necessity for requalification; however, if such changes affect the essential elements of table 7-5, the revised welding procedure with all changes identified shall be submitted for information to the authorized representative. The changes specified in 4-7.1 through 4-7.11 require requalification of the welding procedure for qualification level I. 4-7.1 BASE MATERIAL. a. Unless permitted by table 7-3, a change from a base material listed under one S-number in table 7-1 to a material listed under another S-number, or to any other material not listed (unless considered a part of a group in accordance with table 7-1, footnote 1), except as follows: (1) 4-4.6For tube-to-tubesheet welds and nonferrous socket and seal welds in pipe less than 3/16 inch thick, see 4-4.6. (2) For base materials having toughness requirements, see table 7-7, footnote 2. (3) For groups S-4 and S-5, qualification for all materials within these groups applies only when these materials are welded in the annealed or normalized and tempered conditions. When any one of these base materials is welded in a quenched and tempered condition, separate qualification is required. However, qualification using any one of these materials in the quenched and tempered condition shall also qualify for welding all of the materials in the S-group in the annealed or normalized and tempered condition. (4) A change to a UNS N06625 base material (i.e., any Inconel 625 type alloy) from any other base material (including other S-43 group materials). (5) A change from one alloy to another alloy within group S-11F, unless permitted by MIL-STD-2191. b. A change in the base material thickness to a thickness outside the limits for which the procedure was qualified (see table 7-6). For automatic, mechanized, and robotic welding of pipe that is 5 inches OD or greater with a thickness of 3/8 inch or greater, where the increase is more than 1.1T but not more than 2T, only level II qualification per 4-8.t is required. For cladding and hardfacing base material thickness, also see 4-7.9.1.e, and for weld thickness and layers, see 4-7.2.c. c. In plasma arc welding, when welds are made between two base materials that have different S-numbers, requalification is required even if the two base materials have been independently qualified using the same procedure. d. An increase in base material paint/primer thickness or type per 4-4.1.12. e. For mechanized, automatic, and robotic welding of pipe groove and socket joints, a change in OD shall be governed by 4-8.s, 4-4.1.10.1, and table 7-6. For all cladding and hardfacing of cylindrical products, see 4- 7.9.1.e and 4-7.9.1.i.
4-21
Made with FlippingBook - Share PDF online