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315.4 Performance Qualification Testing
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Each welder and brazer that performs a welding or brazing procedure as described in Section 315.2 shall be tested and qualified on that procedure as required in Section IX of the ASME Boiler and Pressure Vessel Code. The manufacturer or contractor, shall certify on the performance qualification record that the welder or brazer prepared and welded or brazed the test coupons in accordance with Section IX and that the test coupons were tested by an independent testing laboratory that has, on staff, a welding inspector certified by the "American Welding Society (AWS)."