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It was not a military guy that reported the list of pO2's and effects. It was one of the non-diving scientists. Rod On Mon, 30 Sep 1996, Richard Pyle wrote: > > > Hi Bill, > > I hope you don't mind that I cc'd this to techdiver. > > > In a message dated 96-09-30 14:21:25 EDT, you write: > > > > << After hearing what soem of the USN > > guys had to say at this forum I just returned from, it sounds like that > > is a good idea. >> > > Would it be worth elaborating on this for us guppies that missed the forum? > > Probably would from my perspective,curiosity, interest, etc. :) > > Not much of detail. One of the guys from the USN showed a table with > essentially the following: > > PO2 Real-world experience > --- --------------------- > 1.7 Number of serious operational incidents. > 1.6 Several serious incidents with "mitigating circumstances" > (e.g. High breathing resistance, etc.) > 1.5 No known incidents (Someone else later reported at least > one incident) > 1.4 No effects with extreme exposure (2 examples of divers who were > inadvertently exposed to 55 hours at 1.4 over three days, with > pulmonary problems but no CNS problems). > 1.3 Upper USN limit for routine mixed gas operations - but 10 cases > of "disturbed consciousness". > > > Like they say - if it's good enough for government.... Seriously, > though, this forum really nailed home for me the fact that the guys with > the REAL experience are the various military agencies, and they are the > ones we should listen to. They used to do a setpoint of 0.7, which I > would never follow because it would lead to unreasonable deco and doesn't > leave enough of a margin of error for hypoxia. 1.3 doesn't affect the > deco all that much, and provides some extra headroom for hyperoxia. I'll > run some profiles to see how it affects deco, but I'm now thinking that I > will run 1.3 for the bottom, and 1.4 for the deco. > > Rich > -- > Send mail for the `techdiver' mailing list to `techdiver@terra.net'. > Send subscription/archive requests to `techdiver-request@terra.net'. >
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