Mailing List Archive Mailing List Archive
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 -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
Navigate by Author:
[Previous]
[Next]
[Author Search Index]
Navigate by Subject:
[Previous]
[Next]
[Subject Search Index]
[Send Reply] [Send Message with New Topic]
[Search Selection] [Mailing List Home] [Home]