Who is this idiot?
Hyperbaric specialists?<g>

TT

> -----Original Message-----
> From: Alain Tésio [mailto:alain@on*.or*]
> Sent: Friday, April 20, 2001 6:13 AM
> To: Techlist
> Subject: Re: RE: Counter diffusion
>
>
> Is there a real hyperbaric specialist who can back me up ?
> I'm bored to read always the same replies for wkpp
> guys who are full of themselves and shout louder.
>
>
>
> --------------------------- Contents of original message
> --------------------------
>
> Subject: RE: Counter diffusion
> Date: Fri Apr 20, 2001 04:53 AM
> From: Trey <trey@ne*.co*>
>
>
> > Total and complete bullshit. This is the stupidest thing I have
> read on here
> > in years. Partial pressures are not going to create bubbles,
> only absolute
> > differentials. Otherwise we would all get bent going to oxygen,
> right? You
> > obviously do not dive, do you.
> >
> > This is a fairy tale used to explain why misfits get bent. It
> is total and
> > complete bullshit. We in WKPP do dives involving five gas
> changes and the
> > fastest deco from saturation on the planet, and nobody gets bent in any
> > fashion.
> >
> > If this horseshit were even close to true, we would not be
> using deco gases,
> > now would we.
> >
> > -----Original Message-----
> > From: Alain Tésio [mailto:alain@on*.or*]
> > Sent: Thursday, April 19, 2001 6:38 PM
> > To: scottk@nw*.co*; Techlist
> > Subject: Re: Counter diffusion
> >
> >
> > Counter diffusion occurs when switching gases, the common
> > picture is "isobaric counter diffusion" because bubbles
> > appear though you don't change the depth, which can't happen
> > in theory with no gas change :
> > when you change from nitrox to heliox, as helium diffuses
> > faster than nitrogen gases out, for some time the total
> > partial pressure of inert gases will increase which can
> > mean bubbles.
> >
> > It isn't something which is absolutely required to know
> > for tech diving, at least if you follow the common
> > procedures and don't play the random gas wizard, but it's
> > a must for hyperbaric specialists.
> >
> > They know how to deal with  decompression illness with gases
> > other than air, at least in Europe when professional divers
> > use heliox for 30 years, however it may be a problem
> > in areas having experience only with recreational
> > diving.
> >
> > If there is one thing to remember, it is that you shouldn't
> > breath nitrox when you go to the chamber after of a
> > trimix accident.
> >
> > The other way is ok though, it's essentially a specialist
> > affair, but using heliox 50 for air accident is ok.
> >
> > Alain
> >
> > ----- Original Message -----
> > From: "Scott" <scottk@nw*.co*>
> > To: "Techlist" <techdiver@aquanaut.com>
> > Cc: "Trey" <trey@ne*.co*>
> > Sent: Thursday, April 19, 2001 6:38 PM
> > Subject: Counter diffusion
> >
> >
> > > George,
> > >
> > > Can you put the issues of "counter diffusion" into language a
> Jarhead can
> > > understand?
> > >
> > > I was accosted this past week by a "Master Diver" who warned
> us that "If
> > you
> > > have to take a chamber ride after breathing that shit (helium) it will
> > kill
> > > you."
> > >
> > > I was so stunned by his position and attitude that I just nodded and
> > > listened.
> > >
> > > Plus, I have no idea what counter diffusion is, or if or why it is an
> > issue
> > > to SCUBA divers.
> > >
> > > Scott
> > >
> > > --
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> >
> > --
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>
>
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