Dear Experts
Appreciate if someone shine some light on 6GR Welder Qualification Range and Limitation in relation to Note - d. & Table 4.12(6)
My understanding -
1 - Welder qualified without backing & he is qualified to weld  ( CJP/PJP Groove and Fillet ) production plate welding  with or without backing
2 - Also need advise on Production Pipe Welding  qualification range and limitation ( Butt-CJP/PJP,T-Y-K-CJP/PJP ) in relation to Note d

Thanks