There's certainly been a lot of gas mains replaced around here in central Scotland recently. I just assumed they were old and rusty, or getting damaged by vibrations from traffic.


On Fri, 27 Apr 2018 09:32:39 +0100, Brian Gaff wrote:

There is always some moisture in gas. However, not a lot. However when gas
pipes of an older type run through clay, often they can rust and have holes,
and moisture gets in even though the clay is so dense the supply continues.
If you look at council web sites around the country especially in the SE,
you will find a huge program of gas main replacement to cope with the pipe
issues.
This is being done around here by Southern Gas Networks and according to
the blokes doing it rusty leaky pipes have been in use for years, Indeed I
have no gas in my house so when it came to attempting to put their pretty
yellow pipes through the old ones they found many house spurs had in fact
completely rusted through. They just plugged up mine as I did not have any
gas devices. However they did give me a bit of the pipe and it was wafer
thin in places and mostly made of rust. The use was built in 1939, so you
can see how bad older pipes might be.
Brian



--
A bird in the hand is always greener than the grass under the other guy's bushes.