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Filling oxygen tanks



 
 
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  #41  
Old December 27th 04, 05:08 AM
Roger
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On Sun, 26 Dec 2004 06:04:35 GMT, zatatime wrote:

On Sun, 26 Dec 2004 05:23:12 GMT, "G.R. Patterson III"
wrote:



wrote:

They also tell me that bulk medical tanks are "purged" once,
inspected, and filled. ABO tanks are "purged" twice, inspected, and
filled. Welding tanks are given a quick conformity inspection and
filled.


Where and how often? What I mean is this. I go down to a shop in Piscataway to
get my welding bottles filled. They exchange bottles there, so I actually just
pick up a new bottle. Is the "bulk bottle" the one they give to me, is it a
storage container they keep, or is it even further up the supply chain?

I'm not sure how big your supply company is, but I can tell you what
happens with mine.

When I drop off a tank, I get a new one that has been inspected and
filled at the welding supply company. Smaller wedling shops get
shipments of tanks pre-filled from the larger ones.

I think this is what you were asking. Hope it helped. I'd never get
an aircraft oxygen tank filled at a welding supply shop.


Our local supplier supplies welding shops, hospitals, and industry
I'm pretty sure one branch also supplies aviation, but perhaps Dennis
knows more specifically.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com
z


  #42  
Old December 27th 04, 05:13 AM
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On Sun, 26 Dec 2004 05:23:12 GMT, "G.R. Patterson III"
wrote:



wrote:

They also tell me that bulk medical tanks are "purged" once,
inspected, and filled. ABO tanks are "purged" twice, inspected, and
filled. Welding tanks are given a quick conformity inspection and
filled.


Where and how often? What I mean is this. I go down to a shop in Piscataway to
get my welding bottles filled. They exchange bottles there, so I actually just
pick up a new bottle. Is the "bulk bottle" the one they give to me, is it a
storage container they keep, or is it even further up the supply chain?


Kinda depends what type of facility you have locally. Some facilities
just ship out empties, and ship in full "exchange" bottles.

I'm sorry if I wasn't clear, by bulk tank, I was referring to the
typical 4+ foot tall bottle, opposed to a walk-around size O2 bottle.
I've got a set of small oxy/acet tanks that were given to me years
ago. Initially, I had to purchase a different acet tank (at a reduced
cost, trading in my obsolete tank). I pay a higher "exchange" rate
when swapping tanks. If I was leasing tanks, the "exchange" fills
would be cheaper.

"Welding" O2 tanks are inspected for hydro date, and the valves are
given a look see to ensure condition, and that they aren't valves
subject to replacement (there are bulletins occasionally against "bad"
valves). Any required repairs are accomplished, and they are filled.

"Medical" and ABO tanks go through a similiar process, but are
"purged" prior to refilling.

Our ABO exchange tanks come from somewhere outside of the local
facility, usually with only a couple of days lead time.

TC
  #44  
Old December 27th 04, 07:34 AM
zatatime
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On Sun, 26 Dec 2004 23:08:49 -0500, Roger
wrote:

When I drop off a tank, I get a new one that has been inspected and
filled at the welding supply company. Smaller wedling shops get
shipments of tanks pre-filled from the larger ones.



Our local supplier supplies welding shops, hospitals, and industry
I'm pretty sure one branch also supplies aviation, but perhaps Dennis
knows more specifically.



I guess you're one notch above in the supply chain.

z
  #45  
Old December 27th 04, 01:56 PM
Denny
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Roger, my source of information is the guy who drives the liquid oxygen
truck... In the past he delivered to all customers from the same
truck...They now have a large truck they use mainly for hospital and
larger industrial deliveries from Flint to Traverse City, because of
the volume required at each fill... They have smaller trucks that
deliver to small volume customers, welding shops, etc. because the
small trucks can back down the alleys, and get into tight areas more
easily... . He said the hardest part when his employer bought the
big tanker trucks and split off the smaller routes was teaching the new
drivers how to find the back alley shops all over the state he had been
delivering during the previous 15 years... He is literally a walking
street map... Name a town and an intersection from Flint, north, and
can usually name the businesses in the area...

I suspect there are increasing regulations on ABO tanks at the retail
level simply due to the need for the folks who work at various levels
of government to justify their salary, office, and secretary... But the
bottom line is that if you are going to use oxygen in the plane and
fill the tank more than once a year, you are money ahead to buy a pair
of brand new 80 cubic foot, welding oxygen bottles ($140 each) and the
adapter hoses (~$100) and refill the airplane bottle yourself... You
get the 80CF bottle refilled at the local air gas dealer or welding
shop for $14 (here in Michigan, ymmv)... For those who feel that this
simply cannot be safe because it doesn't cost enough, go ahead and pay
the Airgas dealer $50 for each refill..

Denny...

  #46  
Old December 27th 04, 06:28 PM
James M. Knox
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"Viperdoc" wrote in
:

Our FBO charges $40 for a fill of my tanks, regardless of size. I took
it to our local compressed gas dealer, and they refused to fill the
tank, since it required ABO,


The next key word is "or equivalent" !!

which is tested to a higher standard than
welding oxygen or medical oxygen, even though they all come from the
same source.


Actually, welding oxygen has a higher purity requirement than either
medical or ABO.

But hardly matters... if they don't want to do it, not much point in
arguing with them.

-----------------------------------------------
James M. Knox
TriSoft ph 512-385-0316
1109-A Shady Lane fax 512-366-4331
Austin, Tx 78721
-----------------------------------------------
  #48  
Old December 28th 04, 01:56 AM
Robert M. Gary
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Because medical O2 vendors never "fill" bottles. They simply exchange.

  #49  
Old December 28th 04, 02:41 AM
Frank Stutzman
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Robert M. Gary wrote:
Because medical O2 vendors never "fill" bottles. They simply exchange.


Speak for yourself.

The medial O2 vendor that I use never hand a problem doing a fill on my
tank. Its an E sized bottle and he just mixes it in with the rest of that
tanks he fills that day.

The downside is that he has to have it over night. The upside of the
downside is that he will deliver it to my place of work the next day free
of charge.

If anybody in the Columbia River Gorge area needs a tank filled, I'm using
Mid-Columbia Medical Equipment in The Dalles.

--
Frank Stutzman
Bonanza N494B "Hula Girl"
Hood River, OR

  #50  
Old December 29th 04, 12:41 AM
Roger
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On 27 Dec 2004 04:56:45 -0800, "Denny" wrote:

Thanks,

simply cannot be safe because it doesn't cost enough, go ahead and pay
the Airgas dealer $50 for each refill..


Would they charge that much at AirGas when a full size refill is only
$10 to $14?

OTOH, I already have one tank and it wouldn't take much to get
another. I lease mine, but there is little difference in cost and
it's all up front. Besides, if anything happened to me they could
just return them. $100 for the filling line really isn't much and I
think it'd be worth it just for night flying.

Owning brings up some other issues.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com

Denny...


 




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