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12:01 PM
OFFICE MEMO Time:
Subject:
RE:Undercurrents and O2 rebreathers 7/5/94
Date:
Mark wrote:
>Concerning 100% O2 rebreathers...Does anyone have any information about a
>Japanese manufactured O2 rebreather featured on Beyond 2000 a few years
>ago. It used two small O2 canisters, and two flexible (accordian type)
>hoses that wrapped around the head where the Co2 scrubber was located.
>(The hoses flexibility was supposed to decrease the chances of AGE.) It
>was an extremely simple system. They instructed users to breath at the
>surface as deeply as possible before descending to get as much atmospheric
>N2 as possible in their lungs so the PPN2 was as large as possible (to
>avoid Oxtox, ect). The unit of course is meant for shallow diving only,
>but any rebreather is better than none from a photographers view point.
I would disagree. I saw the same broadcast (july 4). Did you notice how out of
breath the person was each time she came to the surface (sound a little like a
CO2
hit?) I do not know if it was her breathing (full exhalation given the volume
of the hose lrading to increased CO2) or the device itself (maybe both). As I
am not a
photographer I do not know but I think that 10 minutes at 15 feet is a waste of
time
and effort.
It occurs to me that unless the person using this device is trained in the
oxygen
limits (CNS O2 toxicity) that it would be REAL EASY to *forget* to hard floor
of this
device especially for those that this device is intended for, uncertified
individuals
that want to explore SCUBA without the time and effort for SCUBA certification
(those
most likely to NOT HAVE such training).
>Mark....
Steve Hogan
Steve_Hogan@qm*.sp*.tr*.co*
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