I believe you need to look at Table 4.8. And the way I interpret the table, the welder would be qualified for all fillet welds in any position. Grooves in pipe would be limited to pipe over 24 inches in diameter with backing, backgouging or both. For partial penetration groove welds in pipe and box tubing the welder would not be qualified for welds with a groove angle less than 30 degrees. And of course the dihedral angle restrictions for fillet welds. Hope this helps.