Hi Paul,
I know a company in Aberdeen Scotland called Furmanite
have been doing 'hot taps' for the last 15 years.
regards,
Derek Littleford
--- Paul Bowers <pbowers@pipingdesign.com> wrote:
> Stoppling and Hot Taps have always seemed to be a
> nifty idea to
> me. Here's a few pictures:
>
> http://www.hydrastop.com/action1.html
>
> Line plugging using liquid nitrogen as a freeze
> agent is also
> interesting. Very cool (literally).
>
> The layman might think that this is a particularly
> dangerous
> procedure, but it's actually very safe when done
> properly.
>
> Does anyone know who originally developed this idea?
>
>
> Paul
>
>
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