[MW:13626] P9B materials welding qualification limit with impact & without PWHT

Team members,

Could one give the interpretation clarity of the below :

1.Refer to ASME SEC.VIII .DIV.1 UCS-56 table for P9B materials under
note 3 (a) which states that qualification has to be done in equal or
greater thickness than the production weld thickness(Our customer
specs.(UDHE) also specifies that all welding procedures shall be
qualified on plates not thinner than the part to be welded.)

&

2.Refer to ASME SEC. IX QW-403.6 which states that minimum thickness
qualified is the thicknes of the test coupen or 16 mm whichever is
less .

While comparing the above 2 mentioned statement: Whether we need to
do the welding procedure qualification for each thickness with impact
& without PWHT?

Thanks,
kamal

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