SparticleBrane
Contributor
I wonder if they did the recommended PST hydro pre-test on applicable cylinders...
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Why overfill? If you're buying tanks, get tanks that hold what you want.
Terry
Really? Funny, I've never heard of a single incidence of a steel 72 blowing up from being overfilled. Surely this would be news worthy as fill stations would be destroyed and people would be dying. Do you have any examples, any documented case of this happening? I'd be interested in that. I'm not denying your statement, I just never heard this before.
I have always assumed that steel 72s were over-engineered for their service pressure. This is why it's almost unheard of for them to fail hydro, despite the fact that every one still in service is decades old. I spoke to a hydro guy once who told me he has never seen one fail.
I think that in part, the service pressure of those tanks was influenced by the fact that lower pressure for compressed air was the norm in the 1950s and 60s, and also by the fact that many steel 72s were reputedly used as fire extinguishers, which operated at much lower pressures.
I would be very interested to know the wall thickness and other specific structural information on LP72s as opposed to current 3AA 2400 tanks.
Does anyone have a picture of a steel SCUBA cylinder of any kind that failed due to reasonable overfilling (ie not 10000psi or physical damage)?
I spoke with the owner of a hydro facility in the area that handles most if not all of the local hydros and he said he has never seen a steel SCUBA cylinder of any kind explode.
Im not advocating either argument here just looking for pics of the aftermath if one has ever actually let go under pressure.
So I live in Florida & I've noticed my LDS routinely overfills tanks...I wanna buy something like an LP80/85 to be overfilled. My question is..how bad/dangerous is it really to do this?
What is this list supposed to mean? Its worthless...
*** does "1988 Virginia Aluminum Filling Altered Drugs 0" mean? and what does it have to do with SCUBA cylinders?
Besides the shockingly lacking documentation and details on this list i'm guessing half these "incidents" have to do with burst disks letting go, o-rings extruding, fire damaged tanks and some tanks being altered by drugs??? Does this constitute some kind of proof of something to you?
So according to that document, there have been 2 cylinders that ruptured due to overfilling. One was an aluminum and the other was a steel. The steel failed due to "overfill/disk" which might mean that it was overfilled and the burst disk blew. Or maybe it doesn't. We certainly can't tell from reading the document.
Looks like overfilling steel tanks is pretty safe according to that document.