WPS issue
WPS issue
(OP)
Dear experts please tell me solution for following problem.
There is a PQR with following variables
Plate thickness 14 mm
Technique GTAW
Root with GTAW process with back pass
Question: Now my question is, can i use a WPS using aforesaid PQR without using Back pass. Keep in mind that according to ASME IX addition of baking is non essential variable while ASME IX does not address Deletion of backing.
There is a PQR with following variables
Plate thickness 14 mm
Technique GTAW
Root with GTAW process with back pass
Question: Now my question is, can i use a WPS using aforesaid PQR without using Back pass. Keep in mind that according to ASME IX addition of baking is non essential variable while ASME IX does not address Deletion of backing.





RE: WPS issue
No problem with the WPS but your welders must be qualified without backing.
Deletion of backing is an essential variable for welder qualification,
Cheers,
DD
RE: WPS issue
RE: WPS issue
addition of backing is not addressed since it's easier to weld with backing.
qualifying a welder without backing will result in the range qualified 'with or without' backing. - which is what dekdee said.
unless i've misunderstood you...?
RE: WPS issue
are you referring to backwelding, or backgouging to sound metal and welding? need clarification pls
RE: WPS issue
Best regards - Al
RE: WPS issue
RE: WPS issue
RE: WPS issue
"addition of backing is not addressed since it's easier to weld with backing."
Both of these statements are incorrect.
Deletion of backing is not addressed for WPS..only Welder Qualification
Addition of backing is addressed and non-essential.
RE: WPS issue
RE: WPS issue
root pass by tig
other passes by smaw
will you help me in doing wps for such a joint
RE: WPS issue
Best regards - Al