ASME BPVC SECTION IX WELDING_TRAINING - PART 4

For reducing the number of procedure qualifications, another group qualification is also provided by ASME Section IX.

Refer QW 424, Base metals used for procedure qualification (ASME Section IX Ed:2010)

Based on this if we qualify a procedure a procedure same group or some other groups can also be qualified.

example:

Please refer row 6 on the above table.

P No 4 to P No 4 will qualify P No 4 To P No 4, P No 4 to 3 and P No 4 to P No 1

Please refer row 7 on the above table.

P No 5A to P No 5A will qualify P No 5A To P No 5A, P No 5A to 4,  P No 5A to P No 3 and P No 5A to P No 1

That means if we have a procedure qualification of P No 5A to P No 5A, we can make a WPS for P No 5A To P No 5A, P No 5A to 4,  P No 5A to P No 3 and P No 5A to P No 1 with out further qualifications.