AP 1014 Welder Qualification
AP 1014 Welder Qualification
(OP)
I am outside of my filed of Hydraulics/civil eng, but I need some advice on welder qualification until I can get qualified inspectors on board.
I have several hundred km of 72 inch dia 17.48mm wall thickness X65 pipe designed to B31.4. welding qualification to API 1014.
My reading is that it is a owner's option to qualify welders using only NDT testing (no mechanical tests) 1) is my understanding correct and 2) is t reasonable/safe to qualify only on NDT ?
I have several hundred km of 72 inch dia 17.48mm wall thickness X65 pipe designed to B31.4. welding qualification to API 1014.
My reading is that it is a owner's option to qualify welders using only NDT testing (no mechanical tests) 1) is my understanding correct and 2) is t reasonable/safe to qualify only on NDT ?





RE: AP 1014 Welder Qualification
Fact is that using x-ray with a qualified welding procedure does in fact provide adequate assurance that the welder is competent. That doesn't mean that he won't make the occasional bad weld, but neither does using a pull test for qualification.
I think that testing to a qualified welding procedure is a more important question that gets skipped over too often. If I have a qualified welding procedure then I'm content to do a pass/fail based on x-ray.
David Simpson, PE
MuleShoe Engineering
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RE: AP 1014 Welder Qualification
In the test facility, the welder is under the microscope, and his weld is checked by a known procedure, with everybody able to see what he is doing. In the field, he is "invisible" under the pipe, in the ditch, or behind the weld screen and a long way away from the inspectors.
RE: AP 1014 Welder Qualification
2) Yes - provided that the NDT technique is of sufficient reliability. Of course, in case of doubt, you could always cut up the test weld for further examination anyway.
Steve Jones
Materials & Corrosion Engineer
http://www.oilandgaspeople.com/cv/11499664
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