That's exactly what I'm going to do Leo! As part of this upgrade they had to do work on our gasmeter and the piping coming into the house and they had to rip up some of the concrete in the drive, so a safety check would make some sense to me, but I'll check it out with Bord Gais tomorrow - didnt' get round today, was waiting for ESB to connect my new meter after rewiring... never ending DIY!