Filling LP tanks to high pressure

[tomfcrist]

Here is the reality check. A Sh!tl0ad of divers regularly cave/wreck fill LPs, and in fact I do so hundreds of times per year(my own tanks obviously).....where are all the stories of mishaps ? There are like 5 horror stories, with none involving a properly maintained tank( tanks were rusty, aluminum w/cracks, or not O2 cleaned being PP blended. The statistical fact is that these tanks are plenty capable of being filled to that pressure regularly, and will still pass hydro time after time. I have never seen one cylinder that constantly gets wreck fills fail hydro, to include the 30+ year old ones. For gods sake how many times do we need to hear the timid few express how "dangerous" or "unwise" overfilling is? Educate yourselves with real world experience and go scratch.

 

[lindenbruce]

Afterdark's pic is of a Nissan pickup. The link to the CO2 tank explosion is of a Toyota pickup. B.


http://www.scubaengineer.com/tank_servicingx.htm

 

[Omisson]

Afterdark's pic is of a Nissan pickup. The link to the CO2 tank explosion is of a Toyota pickup. B.


http://www.scubaengineer.com/tank_servicingx.htm

And if the picture comes from the AIGA site- it does not say it was even a scuba tank rupture...

 

[PfcAJ]

The moment an in hydro, VIP, and clean steel tank explodes due to overfill is the moment I stop overfilling tanks.

Meanwhile, I'll continue to do what works.

 

[flots am]

Here is the reality check. A Sh!tl0ad of divers regularly cave/wreck fill LPs, and in fact I do so hundreds of times per year(my own tanks obviously).....where are all the stories of mishaps ?

Call me crazy, but I'll continue to fill my tanks to their rated pressure.

If I want a high pressure tank, I'll buy one. If I want 130 CuFt of gas, I'll bring a 130 CuFt tank.

flots.

 

[Superlyte27]

Yeah, but what if you want a 150cu' tank? Or, better yet, what if you wanted a 116cu' tank in the size of an AL80, that weighs less than an AL80. Oh, that's right, you'd have to get an LP85 and fill it to 3600.

Or, wait, I know what you're thinking, just get an HP120.... but an HP120 costs $100 more, weighs more, buoyancy sucks, etc. etc. etc. Man, I'm glad I live in FL where I can get the best tanks filled the way they are intended.

 

[Doc Harry]

If ya'll are takem to 4000psi stand back some.

That's friggin' hilarious. Thank you for the great laugh.

Laughter is the best medicine.

 

[tomfcrist]

Here is the reality check. A Sh!tl0ad of divers regularly cave/wreck fill LPs, and in fact I do so hundreds of times per year(my own tanks obviously).....where are all the stories of mishaps ?

Call me crazy, but I'll continue to fill my tanks to their rated pressure.

If I want a high pressure tank, I'll buy one. If I want 130 CuFt of gas, I'll bring a 130 CuFt tank.

flots.

You are crazy.

To elaborate on that, if I am diving to 120fsw on 30%, and running a bottom time of 70 minutes, I need more than double 130's. I would need 277cuft of gas in the event of lost deco gas. So, I fill my lp 121's to 3500, and get 312 cuft of gas....it's called a reserve. Before you tell me to carry stages, realize that I'm penetrating wrecks, and already have an 80 with 50/50 and a 40 of O2..... More than that and penetrating tight wrecks is just a nightmare.

 

[flots am]

You are crazy.

Fine with me.

I don't care what your justification is. If the tank was supposed to hold xxxx PSI, it would be rated for it.

This sounds a lot like the Nitrox logs where divers that regularly dive with a 1.4 PO2 jack it up to 1.7 or 1.8 because they're "going deep"

 

[tomfcrist]

Ummm. That comparison is not even remotely valid. Ox tox is very real, and kills people regularly....lp tanks however DONT explode when overfilled unless they are weakened by corrosion....prove me wrong...please.