Rebreather World - View Single Post - Diluent selection and the great alpinist v siege debate

**Dave Sutton** · 31st December 2006, 00:44

[quote=Steve;86570]IHyperoxia and then drowning

Wait a minute: You actually *know* of a death caused by *high* PP02 on a rebreather? Do tell us all about it. All of the dead friends of mine that have died on rebreathers (and there are more than I have fingers on one hand) died due to low PP02. I know of a total of zero divers that have toxed on a rebreather and that's including many hundreds hours of seeing guys dive at 40 feet on the LAR-V as well as my own diving the LAR-V as well as running 1.6 as our *normal* mix as a commercial diver for *thousands* of hours.

Forget the bailout thing, totally divorce it from the diluent selection discussion as the two are not the same. Is there *any* reason to select surface-hypoxic mixes if they are not *required* for the depth planned, or any rationale to select mix where the PP02 of the diluent is not at *least* equal to the desired PP02 at the desired depth? Forget "greater" than the setpoint PP02, use the term "at least" and start writing. Love to hear all about it.

Best,

Dave

31st December 2006, 00:44	#13 (permalink)
Dave Sutton Diveshop of Horrors Current Rebreather/s: Sport Kiss MK 15.X rEvo Other CCR Azimuth Home Build Other Rebreather/s: Evolution Megalodon rEvo Other CCR Azimuth Home Build Join Date: Jun 2006 Location: Narragansett, Rhode Island and Hackettstown, New Jersey Posts: 2,907	Re: ad_ward9 slamming everyone elses gear [quote=Steve;86570]IHyperoxia and then drowning Wait a minute: You actually know of a death caused by high PP02 on a rebreather? Do tell us all about it. All of the dead friends of mine that have died on rebreathers (and there are more than I have fingers on one hand) died due to low PP02. I know of a total of zero divers that have toxed on a rebreather and that's including many hundreds hours of seeing guys dive at 40 feet on the LAR-V as well as my own diving the LAR-V as well as running 1.6 as our normal mix as a commercial diver for thousands of hours. Forget the bailout thing, totally divorce it from the diluent selection discussion as the two are not the same. Is there any reason to select surface-hypoxic mixes if they are not required for the depth planned, or any rationale to select mix where the PP02 of the diluent is not at least equal to the desired PP02 at the desired depth? Forget "greater" than the setpoint PP02, use the term "at least" and start writing. Love to hear all about it. Best, Dave __________________ "Silent Diving with No Bubbles and No Politics".... www.nobubblediving.com Last edited by Dave Sutton : 31st December 2006 at 00:51.
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