S9074-AR-GIB-010/278
4.2.1.2 Approval of procedure qualification data. Procedure qualification test data obtained in accordance with MIL-STD-248 shall be submitted for approval. Approval shall be obtained prior to production welding. The welding procedure upon which the qualification test assemblies are made shall also be submitted for review (see 4.2.1). 4.2.1.3 Welding procedure qualification special requirements for MIL-120 and MIL-140 series filler materials. Welding procedure qualification requirements for MIL-120 and MIL-140 series filler materials shall be as approved by NAVSEA, except for MIL-STD-2191 applications (shafting repairs). 4.3 Welder, tack welder, and welding operator qualification. Welders, tack welders, and welding machine operators shall be qualified in accordance with MIL-STD-248. 4.3.1 For welding of internal tube to header (or drum) welds in boiler components the following shall apply: (a) Welders who have not performed internal tube-to-header welding within 6 months shall perform one tube-to-header weld in accordance with MIL-STD-248 except that the subject test assembly need only be subjected to visual inspection of the root pass and visual and PT inspection of the finished weld. (b) Any reject will require full recertification in accordance with MIL-STD-248. (c) Certification of completion of this test or identification of performed work with the preceding 6- month period shall be added to MIL-STD-278 weld joint history records. 4.3.2 Titanium welders and welding operators qualified outside of a chamber shall be trained in chamber operation prior to the initial performance of chamber welding. 4.3.3 Welder and welding operator performance qualification - special requirements for HIL-120 and MIL 140 series filler materials. Welder and welding operator performance qualification requirements for MIL-120 and MIL-140 series filler materials shall be as approved by NAVSEA, except for MIL- STD-2191 applications (shafting repairs). 4.4 Welding equipment. Welding equipment in the hands of qualified welders. tack welders, and welding operators shall produce welds that meet the applicable acceptance criteria under production conditions. 4.4.1 If the authorized representative doubts the capability of any particular item of welding equipment, he shall for a stated cause require it to be tested in
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