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Welder qualification test at Form: What You Should Know
The following variables shall be tested for each of the performance tests for a welder: a. Welding and NDT b. Temperature c. Gas Pressure at the weld location; d. Metal temperature (MTF) to provide accurate temperature measurement; e. Tension and tensile strength. Performance Specifications Testing Limit. The minimum temperature and tension limit shall be determined using a Teflon- coated tester (or an alternative) that is used in connection with the WELDER PERFORMANCE QUALIFICATION (WPA) SPECIFICATIONS test in Section M-4.2 of ASHE A11.21 Specification for Welding and Brazing. The minimum thickness of Teflon-coated tester shall be 1/2 inch (12.7 mm) or greater. The minimum tensile strength shall be determined using the thickness of the material to be welded. Performance Specifications Time Test Conditions. a. Welding performance test must be performed between the hours of: (i) 7 a.m. and 10 p.m. with no more than 10 consecutive hours of uninterrupted wake and sleep; b. Welding NDT performance test must be performed between the hours of: (i) 7 a.m. and 9 p.m.; (ii) Welding and metal temperature performance must be performed between the hours of: (A) 10:00 a.m. and 2:00 p.m. for the Welder NDT, and (B) 10:00 a.m. and 7 a.m. for welders. Performance Requirements Test and Qualification. a. WELDER: (1) WELDER PERFORMANCE QUALIFICATION (WPA) SPECIFICATIONS test: (A) The WELL-HEAVY WELL-WEIGH (WH-1) welders shall be in accordance with the ASHE A111.21(a)(2)-2005, Standard for Welding and Brazing of Stainless Steels, manufactured using the following specifications:. 1.8% or greater TQ, and : 2.3 or greater ME (2.5% or greater).
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