Notch Toughness or Charpy Impact Test is a supplementary essential variable as per Sec-IX when called for by the design code(Sec VIII Div-1 & others).Addition or deletion of an essential variable calls for requalification of procedure.
Thus a new PQR is needed.
If you stick the same PQR regime: same base metal( preferably with same CE), welding consumables, welding parameters, PWHT cycle, [highlight #FCE94F]only an impact test could be used an addendum to the existing PQR.[/highlight].
Thanks.
Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299