Dear Experts,
I would like to clarify the following as per ASME IX Ed. 2010
I have a weld overlay procedure (PQR) as follows
Base Material: SA 366 Gr. 6
P No. 1
G. No. 1
Filler Spec: SFA 5.4
CVN: WCL, FL + 1mm , FL + 5mm
Production welds as follows;
Base Material: SA 350 LF2
P No. 1
G. No. 2
CVN: Impact Toughness Required
My question would be:
If impact toughness is required, can I use the PQR stated to weld the production pipe?
My understanding is that the supplementary essential variable only refers to QW-253 . For overlay, it does not state in QW-253.1