S9074-AR-GIB-010/278
contaminnat and shall be used only on titanium and titaniun alloy.
30.2.1.3 The cleaning solvent used shall be acetone. Alcohol Formula 23. isopropyl alcohol or other nonhalogenated solvent proven to have no potential adverse affect on titanium. 30.2.1.4 All tooling for fabrication used on the final surface such as bending dies and mandrels, machine carbide bits. carbide grinding burrs. etc. shall be only used for titanium. 30.3 Personnel. All personnel working with titanium and titanium alloys shall be given formal instruction, within the limits of their discipline. on procedures for handling these materials to avoid inadvertent contamination and to attain the highest quality product. Included shall be: riggers and other materials handlers, machinists, heat treaters, spinners. forgers and press operators. welders, grinders, nondestructive evaluation personnel . the various inspectors responsible for work performance. and materials/welding engineers in production or support positions. Records of personnel training and test results shall be maintained with appropriate review to keep qualification current. A training plan, including methods of review to ensure continuous compliance. shall be submitted for NAVSEA approval. 30.3.1 Welders. Qualified welders and welding operators should not be assigned to weld other materials during the time period that they are engaged in production welding of titanium.
40. PRODUCTION TESTING OF S-51, S-52. AND S-53 WELDS.
40-1 Bend testing of welds in class A components, For class A-F. A-1. A-2 and A-3 pressure vessels and having locations A or B type welds as described in this section. a production test plate of the same specification. grade. and thickness shall be made of sufficient size to provide at least one face and one root bend specimen or two side bend specimens. dependent an plate thickness. Where longitudinal joints are involved. the test plate shall be attached by welding to one end of the longitudinal joint and welded continuously with the joint. Where circumferential joint are involved. the test. plate need not be attached but shall be welded along with the joint and each welder or welding operator shall deposit weld metal in the test plate at the location and proportional to that deposited in the production weld. Test plates shall represent each welding process or combination of processes or change from machine to manual or vice versa. At least one test plate is required for each vessel provided not over 100 ft . of Location A or B joints are involved. An additional test plate. meeting the same requirements. as above. shall be made for each additional 100 ft. or portion thereof of Location A or B joints involved. The bend specimens shall be prepared and tested in accordance with MIL- STD-248 and shall meet the requirements therein. Failure of either bend specimen constitutes rejection of the weld. 40.1.1 Welded Joint Location. The location of a welded joint in a vessel defines the placement but not the type of joint. This paragraph establishes joint locations for use in specifying special joint type requirements and degree of inspection of certain welded pressure joints. Since these special requirements,
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