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[MW:6694] PQR Validity

By Materials & Welding
Hello Everybody

 I have qualified (2005) GTAW     PQR#1 for  Material of  (P1 Gr 2) to ( P1 Gr 2).
I have WPS #1 for the same.

Welders qualify for WPS#1
I have question

1.If I want Welder to weld  Material Of P8 Gr 1
I have to develop new PQR ?
 

If you need more info let me know

Thanks

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