Re: Cascade O2 filling station

[Guest guest]

:

Pro: cheaper and not dependant on resupply or complications of

transporting tanks, set up of cascade (pig tails) is not difficult. minimum

3 large tanks to cascade to optimal pressures.

The cost benefit ratio is dependant on the volume of tanks needing

refilling.

Con: can be dangerous in the wrong hands.....heat can be a serious issue

with rapid filling as well again.... The cost benefit ratio is dependant on

the volume of tanks also routine hydrostatic testing of the tanks can (go

longer than controlled by regulations).

This can be determined buy the stamped information on the tank itself

usually the neck, I suspect the coding varies from country to country even

colors do, please take the Russian ones back please....black that's just not

right...lol.

I have fabricated a device that is a " cheater of sorts " , from " H " or " M "

size tanks to D regular or Jumbos or E size, equalises pressure but really

helps out in a pinch, say in the scenario of the entrapped victim (building

collapse or in a vehicle) or Greaber hung over in a hotel room!

I am a bit challenged in the computer area, I have no clue as to how to

upload a picture of the device to shared files but will happily shoot anyone

the picture of it for the asking, or if someone has the ability I will send

and it can be placed in photos.

cheers and keep on sucking wind.

Wilf

Cascade O2 filling station

>

> Hey anybody is filling his own oxygen cylinders ?

>

> What's the pro and the con of it ?

>

>

[Guest guest]

The O2 cascade system is not so much an issue in N-A

You can sit down with a catalogue and order hte parts on a monday afternoon

And have the whole thing assembled Friday

Not so true in the rest of the world where these installations are basicaly

out of the law

(Certainly in France)

The bigest issue IMHO

Is resisting the temptation of filling empty cylinders

Read : Contaminated

Wilf Mackie <w.mackie@...> wrote:

:

Pro: cheaper and not dependant on resupply or complications of

transporting tanks, set up of cascade (pig tails) is not difficult. minimum

3 large tanks to cascade to optimal pressures.

The cost benefit ratio is dependant on the volume of tanks needing

refilling.

Con: can be dangerous in the wrong hands.....heat can be a serious issue

with rapid filling as well again.... The cost benefit ratio is dependant on

the volume of tanks also routine hydrostatic testing of the tanks can (go

longer than controlled by regulations).

This can be determined buy the stamped information on the tank itself

usually the neck, I suspect the coding varies from country to country even

colors do, please take the Russian ones back please....black that's just not

right...lol.

I have fabricated a device that is a " cheater of sorts " , from " H " or " M "

size tanks to D regular or Jumbos or E size, equalises pressure but really

helps out in a pinch, say in the scenario of the entrapped victim (building

collapse or in a vehicle) or Greaber hung over in a hotel room!

I am a bit challenged in the computer area, I have no clue as to how to

upload a picture of the device to shared files but will happily shoot anyone

the picture of it for the asking, or if someone has the ability I will send

and it can be placed in photos.

cheers and keep on sucking wind.

Wilf

Cascade O2 filling station

>

> Hey anybody is filling his own oxygen cylinders ?

>

> What's the pro and the con of it ?

>

>

Member Information:

List owner: Ian Sharpe Owner@...

Editor: Ross Boardman Editor@...

ALL list admin messages (subscriptions & unsubscriptions) should be sent to the

list owner.

Post message: egroups

Please visit our website http://www.remotemedics.co.uk

Regards

The Remote Medics Team

[Guest guest]

:

Thank you, indeed your statement concerning availability of fittings is

really a non-issue in NA, since your post and question to the group I have

undertaken a bit more research. It is becoming more evident that

restrictions concerning this activity are becoming more stringent, as one

" gas law challenged " individual caused himself grievous injury (no not in

B.C.) regulations are being reviewed presently in my part of the world, the

contamination issue is a strong argument for " the parties with vested

interests i.e. commonly called the manufacture) may use this as argument to

control the market place so to speak, perhaps just a money grab... you

choose? I was unaware of the regulations in France, my ignorance, is France

used very much for support work for off shore deployments?

For discussion sake, contamination issue may be a bit of a red herring in

my humble opinion other than dust contamination. I can see no other possible

way that contamination could occur if source gas is from a reputable

supplier, and field testing for trace gasses would be very difficult to say

the least or even prove?

you are without doubt an expert in this field, so I would like to

ask? To your recollection have you ever heard of a case (anywhere) where

contamination of Oxygen (medical) has ever affected a patient outcome or in

fact documented or even suspected?

I have heard and read about bubble humidifiers (wash bottles) being

contaminated from bacteria, but never a bacterial vector (aerobic bacteria)

that could possibly survive in hi pressure containment devices, without a

supply H20 and some form of media. I have read of neonatal isolet humidifier

(one filled with isoproponal) hitting the court room floor, yeh gads. I

digress.

If you have any links I would be most appreciative especially the one you

have mentioned below I do not have a great connection to the net right now a

link would be great interest, as without reviewing this reg I may entirely

premature.....my ex wife always told me that!

> The biggest issue IMHO

> Is resisting the temptation of filling empty cylinders

> Read : Contaminated

Thanks very much in advance.

Wilf

ps I am happy to announce that I was nominated for funniest poster on

another listserver site, very fortunate for myself that Rod and Tom are not

invited, I just cannot stand the competition, but won in the catagoree for

worst speler, hans down.

cheers all.

[Guest guest]

Wilf Mackie <w.mackie@...> wrote: For discussion sake, contamination

issue may be a bit of a red herring in

my humble opinion other than dust contamination. I can see no other possible

way that contamination could occur if source gas is from a reputable

supplier, and field testing for trace gasses would be very difficult to say

the least or even prove?

you are without doubt an expert in this field, so I would like to

ask? To your recollection have you ever heard of a case (anywhere) where

contamination of Oxygen (medical) has ever affected a patient outcome or in

fact documented or even suspected?

Hey ! Oh !

Don't you go calling me names (expert!!!)

Just because I read the package insert...

Both in French and Anglo, mind you

... one rainy morning

The contamination that concerns us the most

As the refilling goes

Is humidity contamination

(not really dirt or anything else... as most of us have the reflex of keeping

the valves closed and clean)

Humidity, in real theory, accelerates/creates the corrosion process

Having :

- Steel (99.... %)

- Oxygen (99.... %)

- Water ... at this stage any percentage precent at room air

I assume equilibration is rather instaneous if valve left open for any amount

of time ! ?

Which brings on the question: how much more expensive would a regulator with

an integrated minimum pressure (50 PSI?) valve would cost ?

As for how many catastrophic failure (explosion) of oxygen cylinders where

brough on by oxydation damage ?

- Taken form the total number (near 0) of medical oxygen cylinder failure

- The ones that were not dropped (was it the drop, the corrosion or a

faithfull combination of both ?)

- The ones that had a faulty valve

- Calculated only from the group of medical oxygen cylinders that were

artis(un)analy filled ?

This said

Routinely, SCUBA bottles and SCBAs are left open to Atmosphere and in usually

more humid (and salty) environments than MOST of us operate in. So real

theoreticaly, that's where the refilling legislation should hit first.

Logicaly))))

Organic contaminants are more of an issue with air cylinders

Carbon monoxyde being the most common, stupid and deplorable one

Otherwise most organic contaminants are more likely to be traced back to poor

mask fits from SCBAs than actual cylinder contamination.

As medical oxygen organic contamination is concerned. I venture to guess that

their is not manby bacterias that can survive the cylinder environments and the

only potential victim of these theoretical contaminations could only be vented

immunodepressed Pts... who get pneumonias no matter what

With a slew of contamination source current to the daily occurence level

That would be hard proven to be originating from a compressed contaminated

medical oxygen cylinder

Even one that would have been refilled by some Shlomo in some hospital cellar