Cylinder Storage

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Richard Newman - 21 Aug 2003 15:11 GMT

Should cylinders be stored empty or full if they are not going to be used
for some time?
Thanks.

--

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Craig Smith - 21 Aug 2003 19:43 GMT

I believe that they should be stored with a limited amount of gas in them. A
full cylinder would be bad in that if it was heated too much you could
rupture the burst disc and an empty cylinder is bad because contaminated air
(damp, etc) can enter the cylinder when the pressure differential is zero.
Store it with 500psi maybe?
Craig.

> Should cylinders be stored empty or full if they are not going to be used
> for some time?
> Thanks.
>
> --

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Rich Lockyer - 22 Aug 2003 07:08 GMT

>Should cylinders be stored empty or full if they are not going to be used
>for some time?
>Thanks.

50-500psi... just enough to ensure that ambient air is not drawn back
into them. More than 500psi and you run the risk that in a fire the
tank will fail before the burst disc blows, plus it can stress the
aluminum.

--- Rich
http://richlockyer.tripod.com/

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Unita - 25 Aug 2003 22:24 GMT

> 50-500psi... just enough to ensure that ambient air is not drawn back
> into them. More than 500psi and you run the risk that in a fire the
> tank will fail before the burst disc blows, plus it can stress the
> aluminum.

You want to store them either completely full or near empty
(100-200psi). If nearly empty and there is a fire or other large
temperature source the pressure will increase but not enough for the
tank to explode even if the fire causes damaged to the tank.

If the tank is full and there is a fire the pressure will increase
enough for the brust disk to go before the tank is damaged enough to
explode.

If the tank is partially filled, then all bets are off. The
temperature will cause the pressure to increase but perhaps not enough
for the burst disk to go. However, in the meantime the tank may
sustain enough damage that it will fail at standard fill pressures.

If your house/car etc. is ever on fire and contains a scuba equipment
inform the emergency personel regarding its location, otherwise they
will be very pissed and you could be held liable if someone is hurt.

Cheers,

Allen

PS This info is what I learn from taking a tank inspection class by
Bill High

http://www.psicylinders.com/

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Roger Christopher - 23 Aug 2003 20:25 GMT

min. 200psi keeps out moisture.

> Should cylinders be stored empty or full if they are not going to be used
> for some time?
> Thanks.

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Jeff - 24 Aug 2003 14:45 GMT

Do I hear 199PSI?

> min. 200psi keeps out moisture.
> > Should cylinders be stored empty or full if they are not going to be used
> > for some time?
> > Thanks.

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Chris Guynn - 24 Aug 2003 16:48 GMT

> Do I hear 199PSI?

I bid 197...

> > min. 200psi keeps out moisture.
> > > Should cylinders be stored empty or full if they are not going to be
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