Hi Wesley
Check Clause 5.13
5.13.4 CJP Tubular Groove Welds
(1) A PWPS for production joints welded from one side with backing, or both sides with backgouging, shall use the
appropriate Figure 5.4 detail and shall conform with all other requirements of Clause 5. However, nominal pipe diameters
less than 12 in [300 mm] welded with SAW shall require WPS qualification in accordance with Clause 6.
(2) A PWPS for tubular CJP butt joints welded from one side without backing shall use joint detail B-L2b or B-L6 of
Figure 5.4, whichever is appropriate, and shall conform with all other requirements of Clause 5.
See Clause 6.13.6
See Table 6.9