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On Sat, Aug 11, 2007 at 06:57:45PM +1200, Russell McMahon wrote:
> > Reminds me of how I felt watching the gas company replace all the 
> > pipes
> > going from the gas mains to the houses on my street a few years 
> > back.
> > Everything was done live, the workers simply chopped the existing 
> > copper
> > line in half with a non-sparking tool, manually bent it to stop too 
> > much
> > gas leaking out, and replaced it with a plastic pipe. The whole
> > neighboorhood stunk of gas for weeks.
> 
> Stopping gas flow can be dangerous - air can leak back into the pipes 
> and ... .
> So having a bit of positive flow at all times is more desirable.

Ahh, good point...

So when they bring major new gas pipelines into operation what do they
do? Purge them with nitrogen/co2 first?

- -- 
http://petertodd.org
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