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[MW:4304] Clarifications for various clauses of ASME SEC IX

By Materials & Welding
Dear All,
 
Please clarify meanings of below clauses with examples.
 
1) whether new PQR  has to be performed if  there is change in GROVE TYPE from V to U During production OR only revising the WPS by incorporating the changed GROVE TYPE will be enough.
 
2) Whether gas purging used during GTAW welding can be consider as BACKING.
 
3) Please clarify the meaning of paragraph  - QW - 403.5( Only for paragraph below point C) with example.
 
4) Please clarify the meaning of paragraph  - QW - 202.4b(2)with example.
 
5) whether change of electrode clasification  under same SFA e.g. change of elctrode from E7018  to E7018-1 or VICE VERSA requires qualification of new PQR.
 
6) Please clarify the meaning of paragraph  - QW - 404.12 & 404.33 with example.
 
 
Thanks & Regards
 
Asad Azmi

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