Re: [PSUBS-MAILIST] Re: filling SCUBA tanks with shop compressors (was Pressure air drive)

["Warrend Greenway" <dub@linuxmail.org>]

Here, Here. But hey, if your life is only worth $20.00, then go for it.

Warren.

> Yes it is right, actually there are other requirements for refilling tanks
> such as air quality around the compressor, if there is a source of
> contaminated gas like a vehicle exhaust, a factory that releases by products
> in the atmosphere, then it goes right inside the tank as well. you dont know
> it and you have the surprise once at depth.
> Air quality is something that must be controled and known at all time.,
> requirements and regulations are to prevent crazies from hurting anybody and
> courts to trial those crazies who did not care and did it anyways, and i
> dont wish anybody to experience slow suffocation at depth, but things happen
> with professionals so imagine with a rookie
> And when i read on this forum that somebody is looking for a less than $20
> CO2 sensor the only response he should get by anybody for help is "where to
> find the less expensive CO2 sensor that meets air system for human breathing
> requirements"
> I renounced to try and understand why people would put their life at risk
> for $50
> Herve
> ----- Original Message -----
> From: "David Buchner" <buchner@wcta.net>
> To: <personal_submersibles@psubs.org>
> Sent: Friday, January 10, 2003 12:51 PM
> Subject: [PSUBS-MAILIST] Re: filling SCUBA tanks with shop compressors (was
> Pressure air drive)
> 
> 
> > How awful.
> >
> > Wow. This is definitely one of those things that's valuable to have out
> > in the open, due to the largish number of people who read this list who
> > are of a hacker mentality and always want to find a cheap, crude,
> > homemade way to do things. (me! ;-)) Am I understanding right -- that
> > the high heat as the air is going through the compressor causes the
> > combustion resulting in CO *then*, and that the suffocation (or
> > poisoning, or whatever the correct term is) was caused *later*, when
> > somebody breathed the stored CO out of that tank?
> >
> > That's scary, and another one of those things I never, ever would have
> > thought of on my own, just sitting around scheming and dreaming.
> >
> > Herve wrote:
> > >> It is prohibited to refill breathing air tanks from industrial
> > >> compressor,
> > >> or air shop compressors. Scuba HP compressors are designed to fill up
> > >> cylinders with high pressure with no moisture or contaminated gas.
> > >> When you compress air, temp goes up and oil or grease residuts, if
> > >> any, but
> > >> present in industrial comp can burn and produce CO, which is odorless.
> > >> Moisture in tanks creates oxydations inside, even in a aluminium tank
> > >> and
> > >> weakens the walls.
> > >> In 1981 during my first scuba dive in the NAVY, 2 experienced divers
> > >> on
> > >> another task died because of that. It was a n old compressor, and
> > >> somebody
> > >> reversed a set of filters, which produced CO due to the high
> > >> temperature.
> > >> They both lost conscience and drawned and never forgot that. So a good
> > >> advise....  use dedicated compressors to refill tanks and other life
> > >> support
> > >> air sytems, and leave shop air compressors for air tools.
> >
> >
> > David
> > buchner@wcta.net
> > Osage, MN, USA
> > http://customer.wcta.net/buchner
> >
> >
> >
> 

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