(a) Performance and procedure qualification. No production welding shall be done until welding procedures and welders have been qualified in accordance with part 57 of this subchapter.
(b) Tests. Production tests are required in accordance with Sec. 57.06-1 of this subchapter. [CGFR 68-82, 33 FR 18828, Dec. 18, 1968, as amended by CGFR 69-127, 35 FR 9977, June 17, 1970]
Subpart 54.23_Fabrication by Brazing