welder qualification

[nonconformance]

if I have a welding procedure approved to weld P8 material and a welder qualified to this procedure his ticket states range qualified is P1 thru P11,P34 and P4X does this mean he can weld P7 material?

 

[weldstan]

Yes, depending on the filler metal. But also possibly not, depending on the requirements of the WPS for welding the P7 material.

 

[nonconformance]

the filler metal would be F6 the same.so all I would have to do is write a new WPS for F7 to go with the F8 PQR?

 

[nonconformance]

opps that's P7 and P8

 

[weldstan]

You have to have a WPS qualified on P-7 materials - not simply writing a WPS. Assuming that the WPS will use the same process and an F6 group filler (peferrably with the same A-No.), your welder will be qualified to make the weld.