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Hot water flooding might bee worth considering. I well have to test how practical it is. I dont have $20.000 for a chamber thoogh. ---------- > Från: Jim Cobb <cobber@ci*.co*> > Till: Ingemar Lundgren <ingemar.lundgren@mb*.sw*.se*>; Tech Diver <techdiver@aquanaut.com> > Ämne: Re: Cold water risk > Datum: den 4 september 1998 03:37 > > Well, these might be stupid ideas, but... > > Commercial divers just have a hose delivering hot water that they just > shove into their wetsuit (or coveralls, if you want to call that a > wetsuit). They make very long hoses, you could stage the hose at your > longer stops. If you suffer a failure the safety diver could go back and > tell them to fire up a propane water heater and pump the hot water down > to you. You just take the hose and shove it in your ripped suit. > > Or how about using 2 drysuits, one on top of another. If the first > springs a leak, pull the zipper open and hook your inflater to the second > suit. > > Some wreck divers here use heavy cotton coveralls over their drysuits. > Not very attractive but it seem to work for them. Keeps the rip from > happening in the first place. > > Lastly a portable decompression chamber at the surface. Rip your suit, > come up to the surface as quickly as you can and deco in your chamber. > These units cost around $20,000 or so, but this would be cheaper than a > habitat. > > Jim > > On 9/3/98 7:20 PM Ingemar Lundgren wrote: > > >I would like to start a discussion about the risks involved in cold water > >diving especially regarding dry suit failures. You > >don't have to bee diving in cold water to have a life tretaning situation > >in case of a suit failure. WKPP for example are diving > >in relatively warm water but they have in water times of 15 hours. Even in > >18-20 C water you will probably not survive with > >a completely flooded suit. In really cold water you will probably not > >survive even 30 min. In open water you can always > >skip part of the deco and still have a good chance of survival but in a > >cave, hours from the exit it is anouther story. > >Most commonly a dry suit only floods partially but even a quite small hole > >can flood almost the entire suit. In Plura a small > >hole flooded 80% of the dry suit and this was from a small hole of 1 cm in > >length. On every long cold water cave dive or > >even long OW decompression dive i make i face a very serious risk in case > >of a suit flood. > >The reason for this post is to ask if anybody can come up with a solution > >to the problem. A decompression habitat would > >do the trick for OW diving and in some cases cave diving. But a > >decompression habitat is often very impractical. it required > >heavy weights, several tons and a big boat with a powerful crane for OW > >use. What i have been thinking of is making a > >habitat filled with hot water. This is a lot more manageable on even a > >rather small boat as there is no lift created from the air. > >The problem is that huge amounts of water needs to bee circulated trough > >the habitat to keep the temperature. This calls for > >a very powerful heating device. I have not been able to find a heating > >device that is both practical and powerful enough. If > >any one have made anything similar or have some helpful information it > >would bee greatly appreciated. Also If somebody > >thinks this is an idiotic idea please do enlighten me. > > > >Other solutions might bee the use of hot water suits but they require a > >hose to the surface and can therefore not bee used. > >If any body have any ideas that you would like to share it would bee > >greatly appreciated. > > > > > > > > > >-- > >Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > >Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > > > > > ------------------------------------------------------------------- > Learn About Trimix At http://www.cisatlantic.com/trimix/trimix.html > > > -- > 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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