AWS D1.1 3.6.1 Combination of welding Process in WPS or PQR
AWS D1.1 3.6.1 Combination of welding Process in WPS or PQR
(OP)
Dear All,
I am working Pressure Vessel & Structure (EPC Company), I have an question. I have plan to qualified PQR(Based on AWS D1.1) for Position 2G,3G,4G for 1 WPS.
Welding Process, I Plan to use FCAW(GS) backing with weldmetal(Gouging) or base metal(Backing Strip). There is an advice from my friend to Qualified the PQR with 2 different Process without doing Backing SMAW+FCAW (Root+hot = SMAW & Fill & Cap = FCAW)
My Question are :
1. Can I combine 2 welding Process in PQR ? SMAW = root+hotpass, FCAW = fill+cap ? Since ASME allow it ASME IX QW-200.4(combination welding process) so how about AWS D1.1 3.6.1 allow to Joint WPS prequalified(clause 3) & WPS qualified Procedure(clause 4)but How about the PQR ? Please kindly advice
2. So AWS D1.1 3.6.1 combine Prequalified WPS and Qualified WPS means I have FCAW WPS and I combine with SMAW WPS within all the parameter so can I weld root and hot pass with SMAW and FIll+Cap with FCAW by combine Prequalified WPS and QUalified WPS with different welding Process ?
3. So my point here i make an summary can 2 welding Process combine in PQR, if can please kindly advice what basis i can do it ?
Sorry about my english,
Thanks & Regards
we17
I am working Pressure Vessel & Structure (EPC Company), I have an question. I have plan to qualified PQR(Based on AWS D1.1) for Position 2G,3G,4G for 1 WPS.
Welding Process, I Plan to use FCAW(GS) backing with weldmetal(Gouging) or base metal(Backing Strip). There is an advice from my friend to Qualified the PQR with 2 different Process without doing Backing SMAW+FCAW (Root+hot = SMAW & Fill & Cap = FCAW)
My Question are :
1. Can I combine 2 welding Process in PQR ? SMAW = root+hotpass, FCAW = fill+cap ? Since ASME allow it ASME IX QW-200.4(combination welding process) so how about AWS D1.1 3.6.1 allow to Joint WPS prequalified(clause 3) & WPS qualified Procedure(clause 4)but How about the PQR ? Please kindly advice
2. So AWS D1.1 3.6.1 combine Prequalified WPS and Qualified WPS means I have FCAW WPS and I combine with SMAW WPS within all the parameter so can I weld root and hot pass with SMAW and FIll+Cap with FCAW by combine Prequalified WPS and QUalified WPS with different welding Process ?
3. So my point here i make an summary can 2 welding Process combine in PQR, if can please kindly advice what basis i can do it ?
Sorry about my english,
Thanks & Regards
we17





RE: AWS D1.1 3.6.1 Combination of welding Process in WPS or PQR
AWS does allow one to combine more than one PQR into a single WPS thereby allowing more than one welding process to be used to weld a joint. Don't forget that the range of alloys/grades qualified by a PQR are also limited and must be taken into consideration.
Best regards - Al
RE: AWS D1.1 3.6.1 Combination of welding Process in WPS or PQR
Thankyou so much for given clarification for my question and it's very helpfull, but what about my question no 2 ?
2. So AWS D1.1 3.6.1 combine Prequalified WPS and Qualified WPS means I have FCAW WPS and I combine with SMAW WPS within all the parameter so can I weld root and hot pass with SMAW and FIll+Cap with FCAW by combine Prequalified WPS and QUalified WPS with different welding Process ?
Please kindly advice ?
Thank's & Regard's
WE 17
RE: AWS D1.1 3.6.1 Combination of welding Process in WPS or PQR
Al has answered your second question
"AWS does allow one to combine more than one PQR into a single WPS thereby allowing more than one welding process to be used to weld a joint. Don't forget that the range of alloys/grades qualified by a PQR are also limited and must be taken into consideration."
In summary
Q1 No
Q2 Yes
Q3 No
Cheers,
DD
RE: AWS D1.1 3.6.1 Combination of welding Process in WPS or PQR
Best regards - Al
RE: AWS D1.1 3.6.1 Combination of welding Process in WPS or PQR
Thankyou so much for your advice, Your answer really helpfully.
Sorry about my english
Thanks & Regards
WE 17
RE: AWS D1.1 3.6.1 Combination of welding Process in WPS or PQR
Best regards - Al