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This is very basic. No need to filter the gas meaning Helium and Oxygen in storage tanks. They are as dry and clean as possible when you buy them. But it is important that the compressor have good filters and that the compressor gets sufficient cooling and ventilation during operation. A bad set up will ware down filters far quicker than asked for as you all know (or have to). No need to have a specific protocol really, follow the operation guide line issued from the compressor manufacturer or if not using your own compressor, ask the provider to show you the latest air test results. Also make it a habit to visually inspect the inside of your tanks now and when. If you find water or humidity inside you have probably to rethink your compressor set up or change air provider after making them aware of the problem witch is rather important. take care Richard Lundgren ----- Original Message ----- From: "terry michael" <OEA51@go*.co*> To: "Richard Lundgren" <rikard.lundgren@sw*.se*>; "Trey" <trey@ne*.co*>; "Rich Lesperance" <richl@uf*.ed*> Cc: "Techdiver@Aquanaut.Com" <techdiver@aquanaut.com> Sent: Thursday, October 11, 2001 3:06 PM Subject: Re: Re: Does He prevents freezing? > Good point, the humidity in the tanks is eliminated by additional filtration? our what is your protocol? > > -----Original Message----- > From: "Richard Lundgren"<rikard.lundgren@sw*.se*> > To: "Trey"<trey@ne*.co*>, "Rich Lesperance"<richl@uf*.ed*> > Cc: "Techdiver@Aquanaut.Com"<techdiver@aquanaut.com> > Date: Wed Oct 10 23:48:05 PDT 2001 > Subject: Re: Does He prevents freezing? > > >George is right. No need to make simple steps of prevention regarding cold > >water diving a high tech matter. > > > >Some suggestions for cold water diving: > > > >1) Always use dry gases. Both compressor supplied and from storage tanks. > >The compressor is to blame in most cases for putting humidity in the tanks. > >Humidity in tanks will increase the risk for freezing as much as dehydration > >will for DCI. > > > >2) As George have stated for years now. Turn down the IP of the first > >stages. Use equipment that works in cold water meaning slow inflators and > >regulators witch are meant to be used in cold waters. Some simply don't > >since they never was intended to. > > > >3) Learn how to use the equipment in a cold environment. How to prevent > >freezing and how to deal with it when it occurs are important and the result > >will in the end be based on your preventive actions before the dive and your > >skill under water. > > > >take care, > >Richard Lundgren > >----- Original Message ----- > >From: "Trey" <trey@ne*.co*> > >To: "Rich Lesperance" <richl@uf*.ed*> > >Cc: "Techdiver@Aquanaut.Com" <techdiver@aquanaut.com> > >Sent: Wednesday, October 10, 2001 12:20 PM > >Subject: RE: Does He prevents freezing? > > > > > >> > >> Rich, if these guys would try turning down the intermediate pressure of > >> their regs and using slow inflators instead of running them at ridiculous > >, > >> unnecessary pressures and huge flow rates, we would not be having this > >> ridiculous discussion in the first place. > >> > >> The amazing thing about "tech" divers is that the obvious and the basics > >are > >> way over their heads. That is why they get nothing done and have nothing > >to > >> report but accidents, clusterfucks, and bullshit. > >> > >> -----Original Message----- > >> From: Rich Lesperance [mailto:richl@uf*.ed*] > >> Sent: Friday, October 09, 3514 12:48 AM > >> Subject: Re: Does He prevents freezing? > >> > >> > >> To: techdiver@aquanaut.com > >> > >> The triple point describes the point at which the boundries of the liquid, > >> gasseous and solid phases meet on a graph of temperature versus pressure. > >> > >> > >> > >> All gasses cool as they expand, regardless of the "mix". None can heat up > >as > >> they expand - that violates a couple of major physical laws <g>. > >> > >> > >> > >> Rich L > >> > >> > >> -- > >> 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'. > >> > > > > > >-- > >Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > >Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > > > ___________________________________________________ > GO.com Mail > Get Your Free, Private E-mail at http://mail.go.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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