In article , Jethro_uk
scribeth thus
On Tue, 17 Sep 2013 08:42:58 +0100, tony sayer wrote:

In article , Jethro_uk
scribeth thus
On Mon, 16 Sep 2013 19:04:41 +0100, polygonum wrote:


My experiences of gas leaks over the past five to ten years suggests
to me that they have absolutely no idea where a huge proportion of gas
goes. They might know to the kilowatt hour exactly how much they push
down the pipes - and then they lose track of it.

When I worked for British Gas "Central Control", we'd vent cubic
*kilometres* of gas from offtakes when undertaking pigging runs. The CAA
had to be informed, as planes flying overhead could conceivably crash
...

What's a "pigging run" please?...

Others have answered for me - it was a remote controlled device for
inspecting the inside of the high pressure (75Bar) pipes. Only back in
the 80s they couldn't work in gas, so stretches of pipe would be isolated
and vented ... methane is lighter than air so goes *up*.

Learn summatt every day..


Funnily enough, there was a theory which had some vogue a few years ago,
that the Bermuda Triangle was actually an undersea phenomenon which
sporadically released large burps of methane ... which would make it
impossible to float or fly over .....

Interesting concept must have been a hellauva burp to have done that!..
--
Tony Sayer