TracyN
Contributor
I would be extremely happy getting a 4000 psi fill someplace other than cave country. But then again if everyone was diving AL-80's the extra gas wouldn't matter.
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My understanding is that tanks typically fail during the fill cycle. Can anyone give me an example when a tank ruptured "while a diver was wearing it"?
Since it was a rental makes you wonder if they routinely filled and stored at 4000?
If the tank is over pumped ie stressed, you are now a tank test pilot - you may be outside the envelope.
As an engineer, I would have had him bleed it back to 3500 and then taken it diving. If he pumped it to 4000 (or probably more) and was stupid enough to give it to you as a paid rental, then what does that tell you about his general interest in dive safety? Not much really. But you could dive it sure. If it splits while you're wearing it, no problem. You're fileted, and dead, and your family is rich. Everyone wins! Except you.
This kind of discussion is a bit like the one going on in another thread about trusting a DM and subsequently running out of air. Moral of that story is trust your safety to yourself and noone else. I would think the same applies here. But that's just me.