This thread is funny and just so happens, I did a small job for a mechanical company on a line feeding a hospital, after the meter so the hospital's problem. Well, the gas company "man" was out there, to inspect and said, "I want to see your paperwork before you strike an arc" I said ok. So I went to the truck and grab my procedures, results and everything and he says, "do you have a card?" Told him no, but seems a card would not tell you anything that these papers won't. That was the first time I was asked for a card, maybe it's something they give out with their employees or something.
I wanted to question this guy on the welds on their meter, concave, below the surface of the pipe but figured maybe it was something that should be left alone! I don't work with this gas company, just do work in their area, they've got their own welders. Almost could not resist pointing out the discrepancies in their welds though.