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MSMAIL%"HeimannJ@WL* SCSD"%GTEC3.dnet@gt*.co*
>
>3) There have been sufficiently few mix dives that most if not all deco models
> are still being validated - on YOU.
Actually, Dr. Buehlmann has done significant testing of this kind of
mix diving, and the commercial diving community very rarely dives air.
I think there are more dives than you imagine.
>[...] I am concerned that trimix is thought of as a safe alternative to
>air. It is no doubt safer than air for really deep (well below 200') dives, if
O2 toxicity (1.5ATA conservatively, 1.6ATA at the "limit") limits
working air depths to less than 200fsw. Nitrogen narcosis greatly
reduces the amount of work that can be expected of a diver below
(approximately) 150-180fsw. Trimix is important shallower than you think.
>only because of the O2 toxicity risk for air, but I suspect that most people
^^^^^^^^^^^
>shouldn't even consider gas until they are routinely pushing this limit on air
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
People should reconsider *before* they push the limits of O2 toxicity!
The consequences of getting drowned during convulsions are far worse
than getting bent!
Cheers,
David Story NAUI AI Z9588, PADI DM 43922, EMT
story@be*.wp*.sg*.co* Oxygen is a drug in California.
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