[MW:9181] RELATION BETWEEN WPS & WPQ THICKNESS LIMITS.

Dear All,

Any body can clarify,

 

1)We have established WPS & PQR for P8 matirial,7.11 thick with  -196ºC impact.Based on this WPS, shall I qulify WPQ with 5mm  thick ?. If yes what will be the range of qualification.
2) Other WPS & PQR for P8&3.4 thik with  -196ºC impact. Based on this if  a WPQ is qualifide with 5mm thick,what would be the thickne range of qualification? Is it 1.7 to 6.8 or 2.5 to 10mm? give code reference.

3) Is there any relation between procedure & performance qualification thickness limits.Give me code reference.

Regards,
C.Venkatramulu.