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Re: The Big Wreck
Congratulations to Mr Hadland for starting this thought-provoking discussion!
Something someone said, about keeping this discussion in the realms of
'technical' diving, reminded me a of question which I had been meaning to ask.
We have experimented in using a BROCO gun (O2 thermic Lance) to liberate shiny
bits from wrecks, and ran into some problems with the ignition method. The gun
has to be self-contained, not surface fed, so the usual electric arc method
of striking it is not possible. We have tried firing blanks in O2 streams,
but this is not hot enough to start the rods burning. Has anyone faced the same
type of problem, and if fo, how did they overcome it?
One idea we had, was to take a car battery down, in a presurised box, with
a mercury switch to make and break the power as and when needed. Obviously,
the box would have to have it's own second_stage valve fitted to allow
pressure equalisation.
Is there a method used in the commercial world which doesn't rely on a surface
supply of gas and power?
Rgrds
Callum (trying to keep it technical)
--
Callum Beveridge International Computers Limited
Tel: +44 (0)1344 472958 Lovelace Road
Fax: +44 (0)1344 473246 Bracknell
Berkshire
Mail: cb@oa*.ic*.co*.uk* RG12 8SN
c.beveridge@br*.oa*.ic*.co*.uk*
BSAC TRIMIX
___________
\O2 N2/
\ /
\ /
\CO2/
\ /
DIVER
"Plan the dive, dive the wreck, wreck the plan..."
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