A situation not mentioned is one like my stepson was under while he was working while listed as welder for a rent-a-welder company. The rent-a-welder company had absolutely no idea about requirements of and for welding as he was only a numbered person who said he was a welder. He worked mainly for steel erection companies, but also worked for a shipyard, a petroleum company along with several piping and pressure vessel fabricators.
He stated that only one time was he tested to D1.1 in steel erection business. Most of the time he said that someone may look at his first weld or at times it maybe the tenth weld.
Of the several times he has worked in the shipyard he hasn't been tested.
He was tested while welding for the petroleum company. It was a plate test and all his welding while working there was welding gas pipe.
He has been tested to different procedures under Sect IX at the three vessel fabricators, all are code shops. He has copies of all tests taken at these shops. He says that two of the shops have a file on him even though he is employed by the rent-a-weld company. The rent-a-welder company keeps no records of any kind related to his welding.
He said that one company company apparently keeps no records on the rent-a-welders. I checked and they only keep time on site records and welding qualifications and NDT records are kelp with the vessel package. As far as he knows his credentials have only been checked one time where welder/welders of record was questioned in a weld involving multiple welders.
Apparently one shop tries to keep him on the projects where there are low NDT requirements. He thinks there is no restrictions in the other two shops on what he welds under his qualifications.
PS:
He recently went to work as "building engineer" for company that recently moved into a large new building and was told to setup a shop that included what he needed for welding as long as the equipment was by a certain manufacturer. He has it all SMAW, TIG, MIG. He was tested by a local NDT company to the Sect IX. The question now is how to maintain his certification and is being discussed with the company' insurance carrier, the NDT company, and a consultant.