thanks for everyones input.the problem has been resolved.
we performed analysis on the material which showed lamination.
we also had 3 independent level III review the film and all 3 accepted what the rt level II rejected.
thanks again
we are welding to API 1104,19th edition.base metal may be an essential variable in API 1104 for welding procedure qualification,but base metal is not listed as an essential variable for welder qualification in paragraph 6.2.2.
the welders were qualified on A106GR B by radiography as allowed in...
the contract calls for 100%RT.THE WELDERS HAVE A 0% REJECT RATE ON A106B PIPE USING THE SMAW PROCESS.ONCE WE STARTED WELDING THE X60 PIPE OUR REJECT RATE STARTED TO GO UP.REJECTS HAVE BASED ON INTERNAL UNDERCUT,I.P. AND L.O.F.
YES WE HAVE TRIED PREHEATING WITH A ROSEBUD AND WITH COILS
AT 250...
IS THERE ANY SPECIAL TECHNIQUES FOR WELDING API5LX60? THE REASON I ASK IS THAT OUR WELDERS ARE HAVING A ROUGH TIME MAKING XRAY QUALITY WELDS.I KNOW THE WELDERS,BUT THEY ARE NOT PIPE LINERS. WE ARE USING E-7010 ALL DOWNHIL.
THE WELDERS WE HAVE ARE EXCELLENT IN DOWNHILL WITH THIS ROD WITH A106 GR...
without having more details such as code of construction,new construction or a vessel already in service,material,thickness,pwht requirements,etc.,i would suggest that you discuss this with your A.I. of record or the local jurisdiction as applicable.
