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Thanks. Just a little survey: How many tank neck orings have you guys blown, and what were the suspected reasons? This was my first. What about the noise this would've made? I wasn't around to hear them go. How long would it have taken the air to escape? I'm still a little apprehensive about plugging the disks. I've never seen one blow, and no one I know around here has plugged them. ss ----- Original Message ----- From: Trey <trey@ne*.co*> To: Steve Schultz <se2schul@st*.ma*.uw*.ca*>; <quest@gu*.co*>; <techdiver@aquanaut.com> Sent: Monday, June 11, 2001 9:41 PM Subject: RE: So I got home and my tanks were empty... > They got too hot and blew it out - that is why burst disks are for morons - > the ring goes. > > -----Original Message----- > From: Steve Schultz [mailto:se2schul@st*.ma*.uw*.ca*] > Sent: Monday, June 11, 2001 9:07 PM > To: quest@gu*.co*; techdiver@aquanaut.com > Subject: So I got home and my tanks were empty... > > > Well, there I was, sitting at home talking on the phone about a math > assignment that I have due Wednesday, when I noticed that something was > sticking out between my tank and the valve. Upon closer inspection, I found > that it was the tank neck oring on my doubles that I had filled a couple of > days ago. A chunck of oring about a cm long was extruding. > > I've only been diving 8 yrs and have never seen this before. I figured that > I should crack my doubles to aleviate any remaining pressure. There was > none. They were bone dry. This sucks, but begs some questions that can > hopefully be answered by those who've seen this before. > > 1) I've had about 20 fills on these doubles since I've broken then down last > for a vis. There were no problems at all with the previous 19 fills. Why > did this happen now, and not 19 fills ago? > > 2) The tanks were overfilled by a mere 100 psi. This shouldn't be enough > for the oring to burst. If it was an overpressure problem (from heat or > magic or whatever), why didn't the burst disk go? I've heard that the disks > are unreliable, but I still have them on my manifold. > > 3) How can I prevent this from happening again? > > 4) If a tank neck oring bursts in a forest with no one there to hear it, > does it make a sound? Seriously, how loud would this have been? > > 5) If this had happened under water, how much time would I have had to > isolate before complete gas loss? > > 6) Comments? > > I'm going to break my doubles down after the assignment is due and look for > any rough spots on the tank neck where the oring sits. I'm also going to > pay special attention to make sure that it's seated properly. Any other > precautions I'm missing? > > ss > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: quest-unsubscribe@gu*.co* > For additional commands, e-mail: quest-help@gu*.co* > -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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