Impact test in HAZ for B31.3

[smart143]

I am developing PQR for piping.Impact test is required per B31.3.cupon (A333 Gr 6 to A350 LF2)thickness is 32 mm and will be welded by GTAW(8mm)+SMAW(8mm)+SAW(16mm).
Do I need to carry HAZ impact for each process.
If yes, where i will find reference of this in code.For weld I know each impact cupon shall carry weld deposit from each process so top and bottom samples will be required i.e. 2 sets.However I am confused with HAZ impact.

 

[smart143]

Awaiting swift response from experts