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Paul >When I last had a discussion with someone connected with the deco chamber >and mentioned using 100% O2 as a deco gas he went white then red then >exploded - they have also stated publicly that they do not wish to treat >anyone who gets bent on a helium mix. I presume that the "someone connected" to the deco chamber must be the janitor :-)? I have heard it said that a Helium bend "easier" to treat than a air bend but then this is only hearsay and I have no experience of this. Certainly, when my buddy was bent, there was no issue with the gasses he was breathing when he was chambered. Moving on to O2. Why is it that DDRC and all good dive shops provide O2 for deco if it is so dangerous? As you say, you live in a backwater, but look on the bright side, at least those taking a chamber ride in your area have the music from the duelling banjos to keep them amused and take their mind off the janitor :-) >From previous posts on the Oxygen Window etc it seems to me that off >gassing of N2 should be more efficient at a 6m stop than a 3m stop ( as >long as you are willing to accept the 1.6 PPO2 ) ?. Yes. >Last question is a dumb one, out of interest those of you who sleep on long >deco are you using surface supply and full face masks A habitat is the best place to nod off. David Shimell shimell@se*.co* <mailto:shimell@se*.co*> DDI: 01932 814096 * Mobile: 07770 282 202 * Fax: 01932 814343 Project Manager, IBM UK Web Server Group, Sequent Computer Systems Ltd, Weybridge Business Park, Addlestone Road, Weybridge, Surrey, KT15 2UF, UK registered in England and Wales under company number: 1999363, registered office as above -----Original Message----- From: Paul Carre [SMTP:paul.carre@po*.co*] Sent: Wednesday, September 13, 2000 7:04 AM To: techdiver@aquanaut.com Subject: Thanks for 80/20 and a couple of questions HI, Start by saying thanks to all for the 80/20 thread - an old rehash for many but it caused me to follow through quite a few references that I would not have otherwise seen ( even though a few rattles were tossed from the pram on the way ). The diving community where I am is quite backward - we have one or two guys diving trimix and at the last count about 10 or so using nitrox ( out of about 250 or so active divers ). When I last had a discussion with someone connected with the deco chamber and mentioned using 100% O2 as a deco gas he went white then red then exploded - they have also stated publicly that they do not wish to treat anyone who gets bent on a helium mix. I don't think that this guy is on the list - if he is I am now in deep shit ( Hi Mickey - buy you a beer sometime ? :). So one question is the treatment for a trimix bend that different or complex ?. From previous posts on the Oxygen Window etc it seems to me that off gassing of N2 should be more efficient at a 6m stop than a 3m stop ( as long as you are willing to accept the 1.6 PPO2 ) ?. Last question is a dumb one, out of interest those of you who sleep on long deco are you using surface supply and full face masks ?. I am not about to try dozing off here as we have a 10m (30 foot) twice a day tidal range and cannot afford to relax for one moment while in the water. We regularly have to avoid pot bobbers and assorted nutters using our deco markers as race markers for their power boat exploits. Paul R Carre (Design Engineer) Polar Instruments Ltd email: <paul.carre@Po*.co*> Tel: + 44 1481 253081 Fax: + 44 1481 252476 www.PolarInstruments.com -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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