Help....
I woke up recently to notice the tell tale smell of gas. Checking all the usual suspects (hob etc.) we resorted to calling transco who reported a 'major' gas leak in the domestic side of the gas supply (i.e. your problem, but I have to cut you off for now). Upon completing a trace and repair the gas engineer, Corgi registered of course, found not one but multiple 'pitted' holes in the copper gas pipes mid section. Some 5 sections were replaced in the kitchen, dining room and lounge. Some of this pipework was under 15 months old as we had it fitted by the same person.
At the same time a water leak was repaired. This may have been leaking for some weeks as it was under a slate floor! This water leak was within 1mtr of the largest of the gas leaks, under the slate kitchen floor.
My question is what could have caused this pretty concerning failure of the gas pipes? The holes appear to have corroded leaving a greenish tinge to the edges of the holes. the pitting also appears to have occured from outside to inside.
When repairing the problem the engineer reported low level voltage (40-50v) when touching the gas and water pipes. The pipes were under the ground floor joists, not touching the subsoil surface. We have since had the electrics checked and cross-bonding to gas and water mains has been re-instated but during the inspection no 'live' wire was traced. So far no-one has offered a logical explaination for the cause of the pipe failure.
Any ideas?