S9074-AQ-GIB-010/248 Rev 1
5-2.11.1 Renewal of Qualification. Renewal of qualification due to a 6-month lapse, as noted in 5-2.11, shall be made for the welding process (for which qualification has lapsed) by making only one test joint (plate or pipe) with all the essential elements used on any one of the welder’s or welding operator’s previous qualification test joints. The joints shall be inspected in accordance with table 7-11. For renewal of qualification for titanium, the welder or welding operator shall make the test joint on titanium base metal and shall also conform to the color criteria as defined in 4-5.1.1. These renewal requirements will re- establish the welder’s or welding operator’s qualific ation for all conditions for which he or she had previously qualified with the welding process employed. Renewal of qualifications due to a lapse of process use greater than 1 year, and under all other conditions, shall be in accordance with initial qualifications required by this document, except where less stringent requirements are approved by the authorized representative. 5-2.11.1.1 Welding Workmanship and Visual Inspection Criteria Re-Examination. Each welder and welding operator shall be re-tested every 3 years in accordance with 5-2.3.a. 5-2.12 VISION TEST REQUIREMENTS. Each welder and welding operator (except for tack, fillet, and stud welders) shall be required to pass an annual vision test. Vision tests shall be conducted using standard test methods for determining visual acuity. In addition, vision tests for welders and welding operators for S-51, S-52, S-53, and S-53A materials shall include a color perception test on workmanship samples displaying the colors and shades expected in titanium welds, which shall be passed with no errors. As a minimum, these colors and shades shall include silver, straw, light blue, dark blue, purple, and gray; the silver loss of luster condition should also be included in this test unless it cannot be replicated. The standard of acceptance for vision acuity testing shall be natural or corrected near distance acuity such that the individual can read J1 letters on the standard Jaeger-type chart for near vision. Other equivalent visual tests, such as the Snellen chart, may be substituted for the Jaeger chart. When corrective aids are used for the vision test, equivalent aids shall be employed in production work. Welders and welding operators who do not pass the color perception part of the vision test shall not be permitted to weld on S-51, S-52, S-53, and S-53A materials. 5-2.13 LOSS OF QUALIFICATION. Requalification is required when the authorized representative or Government inspector has specific reasons to question the ability of the welder or welding operator to make welds that meet the requirements of the applicable fabrication document. 5-3 PERFORMANCE QUALIFICATION TEST REQUIREMENTS. 5-3.1 MANUAL, SEMI-AUTOMATIC, AUTOMATIC, MECHANIZED, AND ROBOTIC WELDING. 5-3.1.1 Base Material Form, Size, and Thickness. Qualification tests performed on a given base material form and thickness shall qualify as shown in table 7-10 with limitations as indicated; for pipe, see the restricted access requirements of 5-6.6. Test assemblies employing butt joint designs specified in MIL-STD-22 may be used in lieu of those in figures 7-14, 7-15, and 7-22, provided the thickness requirements of table 7-10 are met. Test assemblies which simulate production assemblies may be used in lieu of those specified in table 7-10, in which case the qualification shall be limited to the base material form and joint design employed with qualified thickness as follows: for butt welds, T or 0.058 inch, whichever is less, to 2T (where T is equal to the nominal thickness of the test assembly); for fillet and socket type welds, see 5-3.3 and 5-3.5, respectively. Test assembly evaluation shall be as specified in 5-4. 5-3.1.2 Requirements for Repair Welding of Castings. The performance qualification test assemblies for repair welding of castings shall meet the requirements specified in 5-3.1.1. Either cast or wrought base material may be used. 5-3.1.3 Automatic, Mechanized, and Robotic Welding. Welding operators shall qualify using equipment possessing control features similar to those of the equipment that will be used to make the production welds and shall be required to set the equipment with regard to adjustments and settings that affect the welding characteristics and weld-bead placement. Welders qualified to a multiple position semi-automatic process shall be qualified to machine, automatic, or robotic weld multiple positions by performing a single position performance test using the mechanized, automatic, or robotic process equipment, respectively. Also, see 5-6.3.e, l, and m.
5-4
Made with FlippingBook - Share PDF online