Anban,
no code in my knowledge address this matter .Hence such combination is technically not possible
On Thursday, June 26, 2014 2:03:44 AM UTC+3, Anban wrote:
Dear Experts
Dear Sirs
Pls advise .
AWS D1.1-Structural Welding Code-Steel
ASME IX - ASME Boiler & Pressure Vessel Code
Current situation- Module Tubular Columns( 800mm in dia x 30mm thk ) at assembly stage ( Vertical Position -Butt weld in 2G position ).
Material - AWS Group II- ASTM A131-Grade EH36
Internal accessibility - Not allowed for safety reasons.
So Project suggest to use- Root Run using GTAW and Fill/Cap by FCAW
I want to prepare WPS combining -
1- PQR qualified in 6G position using GTAW in accordance with ASME IX ( Base Material- APL 5L X65 ( CVN at -46 deg C)
2- PQR qualified in 2G position using FCAW( with ceramic Backing Strip ) in accordance with AWS D1.1.( Base Material - AWS Group II-EH36-CVN at -40 deg C)
Can i do it? Does the codes prohibit such combinations? Is there any code Interpretations on this subject?
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