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Date: Wed, 05 Aug 1998 14:50:53 -0700
From: Michal Alaniz <michal@ix*.ne*.co*>
Organization: Intelligent Data Management
To: steamboat@is*.ne*
CC: CHKBOONE@ao*.co*, techdiver@aquanaut.com
Subject: Re: Questions to ask: Guidelines on O2 cleaning of standard scuba equipment for Nitrox diving
Dustin Clesi wrote:
> 
> CHKBOONE@ao*.co* wrote:
> >
> > Jeff,
> >
> >     Most agencies suggest and I agree as follows :
> >
> >     Tanks :
> >
> >    If exposed to more than 40% O2 during partial pressure filling - O2 clean
> > them and the valve.    Otherwise don't sweat it.    If you label it for
NITROX
> > I would have it cleaned in any case - shit happens in dive shops !
> >    Dedicate this tank to nitrox only or only fill from nitrox compatible air
> > stations and never let it out of your sight.    If you keep this tank clean
I
> > don't think it is necessary to have it cleaned every single year but some
> > shops will want to see a sticker .
> >
> >     Regulators:    If used with 40% or less don't bother cleaning them.   If
> > used with more than 40% mixtures - O2 clean them.    The main purpose of
this
> > is to get the bends and orafices in the first stage clean because they are
> > just like a fill station situation under high flows.
> >     You might want to have a nitrox regulator checked yearly even if you
only
> > use up to 40% just to keep any accelerated deterioration from sneeking up on
> > you.
> >
> >     Don't do this because any agencies say you should - do it to keep your
> > butt and the filler's butt in one piece.
> >     Check the archives for lots of arguments on this issue - then play it
safe
> > for everyone's sake.
> >
> > Chuck Boone
> >
> > --
> > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'.
> > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
> 
> ......ONE fill from a poorly maintained filtration system or
> a dinky compressor suffering from ring blow-by will corrupt
> your oxygen-cleaned system.
> Be careful WHERE you get your fills. If in doubt, ask to see
> (their) system. D.
> --
To corrupt an oxygen-clean system seems very easy.  To be careful, I
would also ask to 'see' the shops system.  By the way, what am I looking
for and what questions should I be asking the operator?

Michal


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