Hi Jim
remember the "Havananylyser"?

>Hello Clueless O2 Handlers,
>       We are talking High Pressure O2 here. If you think the wheel needs to
be 
>reinvented then get in line with all the
>Folks that think handling O2 at HP is a job for rocket scientists. Simply put, 
>guidelines for the safe handling and dispensing of HP oxygen have been
published 
>by the ASTM, NFPA, U.S. NAVY, U.S. Air Force, CGA, NOAA, and in several 
>technical manuals utilized in various industries where HP O2 is widely used
and 
>Loss Prevention is a concern.
>If you have nothing to lose, this information may be of no concern  to you. If 
>you are not familiar with adiabatic compression then learn it before you 
>proceed. Contact the SWAGELOK companies and request the six page Technical 
>Bulletin No. 5 titled "OXYGEN SYSTEMS". 
>       Most of our procedures for prepping gear that contacts HP O2 is simple 
>yet involves the "trade secrets" that keeps competitors whining. Auto-ignition 
>of various materials occurs with out warning. The steps to prevention are
taught 
>through programs such as our IANTD Gas Blender and Mixing Technician courses. 

>       Too bad it's not as simple as  the "use no oil" tag implies. 
>Sempre Deep,
>Capt. Jim Mims
>Ocean Diving Inc.
>For more info go to www.oceandiving.com
>
>-----Original Message-----
>From:  John Thornton [SMTP:johnpt@jo*.de*.co*.uk*]
>Sent:  Sunday, May 18, 1997 3:32 PM
>To:    Steve Lindblom
>Cc:    techdiver@aquanaut.com
>Subject:       Re: O2 Cleaning BS ??
>
>>
>Steve ?
>>I got to disagree with this. Around here, at least, the industrial gas
>>folks are absolutely useless.
>Does that mean that o2 is a simple gas to deal with?
>> They are used to using dedicated gear, so
>>problems of compatibility, tranfilling or mixing etc never arise, and are
>>horrified at the thought of putting O2 in anything but a big green bottle
>>labled O2.
>is it stamped o2 clean? are all its components o2 compatable? etc etc,
>does he check?
>> Plus they work by rote and have no clear understanding of the
>>rhyme or reason of why they do anything the way the do.
>Exactly
>> Try to corner them
>>and they cite vaguely remembered regulations that they swear exist, but
>>can't actually produce, or tell anectotal horror stories which can't  be
>>verified.
>As above
>>The same it true, to a lesser extent, with the med O2 people. They use
>>dedicated gear, everything is made to fit together, and never have to stray
>>beyond their little dedicated world where every question has a simple yes
>>or no answer. 
>Have you ever seen or heard of the room that they o2 clean everything?
>does it exist?
>>They never have to make judgements as to whether something is
>>clean enough, or safe enough, decisions the O2 diver has to make all the
>>time.
>I dont understand the difference, it is all o2 under pressure..
>>
>>Besides, industrial gas handling practices often simply aren't appropriate
>>to tech diving - industrial gas practice is based on havng such a massive
>>safety margin that the gear can be neglected, mishandlend, and used and
>>serviced by near-idiots.
>O2 is o2, doesnt matter what it is used for its still o2.
>I have to laugh here, it sounds like half the reg service people.
>>Most of the bullshit about O2 and O2 cleaning one hears in the dive world
>>is a result of trying to directly export O2 "wisdom" from the med/indus gas
>>world to the tech dive world, without making any allowance for different
>>circumstances and realities. And. as mixtures in the nitrox range have very
>>few uses outside diving, and there are, as a result, not a whole lot of
>>hard info and test data on them.
>>If you want an example of what happens when you try to blindly apply
>>industrial standards to the dive world, take a look at our tanks - in the
>>USA are made to the same standard (3A and 3AA) that industrial tanks are,
>>tanks that are expected to be able to endure being dropped off the back of
>>trucks, stored outside, refilled daily, and still last 50 or so years. The
>>result? - the same tank that's an HP tank in europe is a LP tank here, and
>>holds 20 or 30 less cf (for those of us without a compressor).
>What the size etc of a tank has to do with this I dont know, but if it
>is relevant, then our Uk tanks are 50 liter at 200 plus bar,(diving
>oxygen grade) I believe they dont allow that in the U.S.(I am not sure,
>its something I was told)
>We have a gas booster manufacturer that has made pumps that operate up
>to 10,000 psi, I have one thaT Pumps to 350bar(4500psi) and I store o2
>at 350 bar no problem, they have been in business for 35 years.
>what i mean by the industry is the people that made the system work for
>the man in the street,instead of making a set of rules that dont seem to
>apply to any other use of oxygen under pressure.
>>
>Regards

-- 
John Thornton        Owner/skipper Scapa Flow Technical & M.V.Karin
Polrudden House                  tel/fax 01856  874761
Peerie Sea Loan
Kirkwall
Orkney Scotland
KW15 1UH
--
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