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Hi George, Can you clarify a few things for me? I've been following this and other posts regarding Deep on Air and the sorts. Below you state "nitrogen causes damage when not in the presence of helium beyond ppn2's in the 130 equivalent range" I understand about cell rigidity in the presence of high ppn2. I don't understand how the same ppn2 in the presence of Helium would off-set this. Naturally the depth would have to be deeper with a tri-mix to have the same ppn2. I'm just a little confused and want to understand, I assume I'm not the only one out there? Knowing that nitrogen in high pp will make the cell walls rigid, will introducing some amount of helium into the "mix" (no pun intended) lessen the wall rigidity for the same ppn2? A very confused Art. Safe diving, Art. art.paltz@r2*.co* Last Dive 8/23/97, SeaGirt(Lobster Dive), NJ, 81ft/60 min bottom, 58 degrees F, 28% bottom mix. -----Original Message----- From: G. Irvine Sent: Monday, September 01, 1997 8:07 AM To: Peter Heseltine Cc: Calkins, Rob; techdiver@aquanaut.com Subject: Re: (no subject) Pete, I forgot about the Fat Slob deep air big mouth arguing with you - that was a classic case - you should repost that one on here so everyone can see what a really arrogant asshole really is, and why we need to rid this business of jerks like that. Pete, a couple of things to add to your discussion here: nitrogen causes damage when not in the presence of helium beyond ppn2's in the 130 equivalent range, and this makes decompression very difficult, and the real problem with narcosis is that it is a judgement effector, and it is not easy to spot by the person who has it. For some reason, there is a masive denial factor in play here as well. Peter Heseltine wrote: > > I agree with George. Yes, I said that. > > About two years ago, I made my debut on this list because I read something > that Brett Gilliam wrote stating that diving the Atlantis to pO2's of 1.8 > was OK and that a sport diver would never stay down long enough for their > CNS "clock" to max out. I spoke out against it, wrote to him, this list and > to others (even to Drager) and was told I was a newbie, didn't know what I > was talking about, was a stupid fuck and other pleasantries. George was one > of the few who spoke out at that time, publicly and forcefully, against > deep air diving. And this was before several of the "brightest and the > best", let alone other "lesser knowns", died doing it. > > Toda -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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