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Happy holidays sir, just wanted to see if you were taking 5 minute air breaks while on the o2, you should spend 20 minutes on o2 then take a 5 minute air break, do not count this time in your deco if you have run a schedule. also to suggest that you switch to 80% instead of pure o2 (you may be doing this already). if you run deco scenarios you'll find that there is hardly NO difference (only a couple of minutes) in added time, where the safety margin added in reference to your o2 loading is much better. we use no pure 02 unless we are treating as in in water recompression.. it's much safer on the deco line when there is surge, current or waves.. you don't have to be so concerned about your 20 foot stop.. (we use the 80% as it was pure o2.. ie. no deeper than 20fsw and air breaks). and, if you fill a 3000psi tank with o2 to 2400, the highest pressure we can get here without a booster, and top it of to 3 grand.. we magically have 80%, so on our longer dives we have more gas... aloha, dennis On Sat, 16 Dec 1995, Bill Brooks wrote: > >"2) We would be very interested in knowing what > > do You generate your tables with?" > 3) Would You have any opininoin on O2 breathing directly after > > a dive?" > > > >Reima Raty > >Helsinki > >finland > > The tables were cut using decom. This is an easy to use program that allows > surface o2, air, nitrox, heliox and trimix. I also own Dr. X and Diveplan, > Decom is the easiest to use for predive gas planning and is inexpensive (my > opinion only). > > I recently began using surface o2 to improve my diving efficiency at work. > While doing u/w log recovery in the 40' to 85' range, we were pulling 5 very > hard dives per day averaging approx. an hour per dive. We would do about 5 > minutes of deco at the end of each dive. We were working 5 days per week > and had a working day of approx. 14hours/day with non diving time being > spent tending and humping gear. At the end of each day we were a sad sorry > bunch divers with a great deal of general fatigue, but no clinical dci. As > our work progressed we were forced to dive progressivly deeper to recover > wood in quantity. In order to minimize the chance of an expensive dci > episode we began using 100%o2 for 45 minutes via demand reg after each dive. > The subjective difference was amazing! We were working deeper and harder > and yet were able to do far more work and finished our days feeling like we > had put in a hard day but without the degree of post dive fatigue and mental > cloudiness we had previously experienced. On approximately the 12th day of > this I had a hit in my right shoulder that was resolved within about 20 > minutes after going on to o2. Needless to say all of this made a believer > out of me. > > Unfortunately with my sport diving I do not have the services of a 10 T > bottle bank of o2 and a working barge and crane to carry all of this ####. > An o2 rebreather would seem to be the ideal combination of portabliety and > gas duration. People have been making these for years ( as was illustrated > again in the latest Aquacorpse) so some one out there must have the info on > how to construct a scrubber. > > Thanks Bill > > -- > Send mail for the `techdiver' mailing list to `techdiver@terra.net'. > Send subscription/archive requests to `techdiver-request@terra.net'. >
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