Just out of interest in this topic for procedure qulification you state that if a 1G weld is done and it requires impact testing then a fundamental change in welding position requires further qualification which is clearly stated in AS3992 table 5.1.4b.
So if a 6G pipe butt weld is done for a procedure qualification and impact testing is required does this cover the 5G and 2G position or does impact testing have to be carried out on two more seperate procedure qualifications to cover these fundamental change in welding postions.
Bearing in mind if there are no impacts required on a 6G procedure qulification then this covers you for all positions.
Regards,
TTT