What is the minimum safe operating temperature of a scuba tank?

What is the minumum temperature that a fully pressurized 3000 psi
aluminum scuba tank can safely withstand for an indefinite period?

Bill J. wrote

> What is the minumum temperature that a fully pressurized 3000 psi
> aluminum scuba tank can safely withstand for an indefinite period?

Now there's an interesting question. I haven't a clue.

Lee

Lee Bell wrote:
> Bill J. wrote
>
> > What is the minumum temperature that a fully pressurized 3000 psi
> > aluminum scuba tank can safely withstand for an indefinite period?
>
> Now there's an interesting question. I haven't a clue.
>
> Lee

But I was told that tanks should be emptied before storage for a long
time ..
About temperature, just avoid the extremes ?

Thus spake "Bill J." <nolabab@gmail.com> :

>What is the minumum temperature that a fully pressurized 3000 psi
>aluminum scuba tank can safely withstand for an indefinite period?

Operating (subject) or storage. Obviously, once you hit 32 degrees,
operation of the tank is no longer an issue. If you're talking about
storage, it the termperature at which Al becomes brittle. Look it up
in your CRC.
--
dillon

If you can't figure out how to unmunge my
address, email me and I'll explain it.

"Tina" <MoonSeaButterfly@yahoo.com> wrote in message
news:1158535628.392187.286470@k70g2000cwa.googlegr oups.com...
> Lee Bell wrote:
>> Bill J. wrote
>>
>> > What is the minumum temperature that a fully pressurized 3000 psi
>> > aluminum scuba tank can safely withstand for an indefinite period?
>>
>> Now there's an interesting question. I haven't a clue.
>>
>> Lee
>
> But I was told that tanks should be emptied before storage for a long
> time ..
> About temperature, just avoid the extremes ?

I saw a chart today that indicated Viton O-rings were good from 50 below
to 200 above Fahrenheit.

I don't know about the aluminum, but considering aircraft construction and
flight temps, I would think that the aluminum would survive at any
temperature within a relatively normal climate.

--

Popeye
It is the mark of an educated mind to be able to
entertain a thought without accepting it. - Aristotle
www.finalprotectivefire.com


>

Tina wrote

> But I was told that tanks should be emptied before storage for a long
> time .. About temperature, just avoid the extremes ?

It seems you've been told a lot of things that differ from what others
believe or were told. Most people, including me, believe that tanks should
not be emptied but, instead, should have at least 50 psi in them, give or
tank. Mine are generally stored full, but they're not in long term storage.
They're usually stored for no more than a year.

Lee

Tina wrote:

>
> But I was told that tanks should be emptied before storage for a long
> time ..

Never 'emptied', but with just enough pressure in it to assure it stays
above ambient. That way no outside air( and it's water) gets in.

Bill J. wrote:
> What is the minumum temperature that a fully pressurized 3000 psi
> aluminum scuba tank can safely withstand for an indefinite period?

Since AL tanks are used in every diving environment on earth, I would
say that you need not worry.

pugetsounddiver@gmail.com wrote:

> Since AL tanks are used in every diving environment on earth, I would
> say that you need not worry.

What if he's fire diving? Is steel inherently a better material for
fire divers and their ilk?

> Since AL tanks are used in every diving environment on earth, I would say
> that you need not worry.

What if he's not planning on using it for diving. I have an 80 cubic foot
Luxfer in the corner of our bedroom that's never been using for anything
except O2. It's not medical O2, you understand, just O2.

Lee