(a) Visual inspection of welding must be conducted by an individual qualified by appropriate training and experience to ensure that the welding is performed in accordance with the welding procedure and the weld is acceptable under subdivision (c) of this section.

(b) The butt welds on each pipeline with a nominal diameter greater than two inches (51 millimeters) to be operated at 125 psig (862 kPa) or more must be nondestructively tested in accordance with section 255.243 of this Part.

(c) The acceptability of a weld that is nondestructively tested or visually inspected is determined according to the standards in section 9 or Appendix A of API Standard 1104 (as described in section 10.3 of this Title). However, if a girth weld is unacceptable under those standards for a reason other than a crack, and if the Appendix A to API Std 1104 applies to the weld, the acceptability of that weld may be further determined under that Appendix.