Rebreather World - View Single Post - Bringing an unconscious Rebreather diver up from depth

Dave Sutton · 10th May 2007, 03:37

Quote: (Originally Posted by ScubaDadMiami)

Just a note to add: You have to be careful about going with the BOV if the mix will be hypoxic in the shallows. The diver will be just as dead via lack of oxygen from the mix as from drowning.

Not really. There's a huge gap between time of useful conciousness (TUC) and time to suffering permanent physiological disability. You will pass out *lots* sooner than you will suffer brain damage. Aviation stuff: TUC at 35,000 feet is about 1 minute. Takes hours there to suffer brain damage. Convert that to PP02 and see what it works out to.

In any case, I'll again beat the "use a reasonable diluent" drum one more time.

Dave

10th May 2007, 03:37	#21 (permalink)
Dave Sutton Membership Cancelled Current Rebreather/s: Sport Kiss MK 15.X rEvo Other CCR Azimuth Home Build Other Rebreather/s: Classic Kiss rEvo Other CCR Azimuth Home Build Join Date: Jun 2006 Location: Narragansett, Rhode Island and Hackettstown, New Jersey Posts: 2,637	Re: Bringing an unconscious Rebreather diver up from depth Quote: (Originally Posted by ScubaDadMiami) Just a note to add: You have to be careful about going with the BOV if the mix will be hypoxic in the shallows. The diver will be just as dead via lack of oxygen from the mix as from drowning. Not really. There's a huge gap between time of useful conciousness (TUC) and time to suffering permanent physiological disability. You will pass out lots sooner than you will suffer brain damage. Aviation stuff: TUC at 35,000 feet is about 1 minute. Takes hours there to suffer brain damage. Convert that to PP02 and see what it works out to. In any case, I'll again beat the "use a reasonable diluent" drum one more time. Dave
(Offline)