On Mon, 25 Apr 2011 22:38:19 +0300, you wrote: >Been a sub nuc for 20+ years. >While it is a tough way to die (trapped on a nuc sub, no rescue >possible) we saw on the Kursk that the 23 sailors died from >suffocation, and poison gas. > >But, the ones that suffocated died because the RATIO of CO2 to O2 was >too high. Too much Co2 and one falls asleep. >To little O2 and one dies from lack of a oxygen. But the body, with >its will to survive, will put itself to sleep in a bid of self >protection, and then gradually shut down unneeded parts of the body to >keep the brain alive, but ultimately, the combined high co2 / low o2 >is just too much and the body shutdowns the brain. > IDLH for carbon dioxide is 40000 ppm based on acute inhalation toxicity data in humans which would be about 4% but of course these levels are skewed on the side of safety.
Death by suffocation in sealed container is normally caused by CO2 poisoning which is at about 7% by volume. >If you are ever in a room protected from fire by CO2 fire extinguisher >bank, you probably seen signs that say that evacuation is necessary >when the alarm sound because the discharge of the CO2 will displace >the oxygen, leading to injury / death. > >But, on a slowly raising ration in a confined atmosphere, I think that >the MDs would say that it is chicken / egg. > >lee _______________________________________________ Liveaboard mailing list Liveaboard@liveaboardonline.com To adjust your membership settings over the web http://liveaboardonline.com/mailman/listinfo/liveaboard To subscribe send an email to liveaboard-j...@liveaboardonline.com To unsubscribe send an email to liveaboard-le...@liveaboardonline.com The archives are at http://www.liveaboardonline.com/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/liveaboard@liveaboardnow.org The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html
