That's trying to look cool?Originally Posted by bernieflyer
Welcome to the Cave Diver's Forum.
That's trying to look cool?
Ever heard of crazy canucks....???? This one was a stupid Quebecer.....
Bernie
Naui 1994
Naui advanced 1995
TDI nitrox 1996
Full cave NSS-CDS 1998
Abe davies 2001
IANTD trimix 2002
Just dive double 212's you will have plenty of air LOL
(All give some, Some give ALL . Semper Fi) Safe Diving (JAMMER)
I don't know of any shop that will SELL a plug or steel burst disc.....but some shops will give them away. They won't openly advertise it, though, and probably won't give it to anybody they don't know. There's too much liability involved if they sell them.
You probably don't want a PLUG in there, because that is obvious to anybody that knows what they're looking at. Most shops wouldn't fill it, and if the DOT saw it you could potentially be in a heap of trouble. Stainless steel burst discs are the better way to go.
Mike
I have seen the results of a K bottle of acetylene exploding in the trunk of a car. Absolutley nothing but the frame of the car remained and the sheet metal and glass making up the body was wrapped around trees and slammed through the walls of the house the car was parked in front of. If you double disc or plug you may want to put a sign on your garage door that warns firemen there are bombs inside. I routinely cold fill tanks to 3600 for deeper dives but try to get them in the water within a couple of days. A single 5000 burst disc work for me. Then at least the disc will still blow hopefully before the tank in a house fire.
Since the accident in Lauraville two years ago, I removed all the double discs from my cylinders. I also drilled holes in all my luxfer cylinders and sent them to the scrap yard. That said. I use single discs rated at a service pressure of 3450. These are compatable with my EX series Pressed Steel and Werthington doubles. As for my double fabers, since they are rated in europe for 4000 psi, I feel comfortable also using the 3450 service pressure rated burst disc assemblies.
When I get our fill station running later this year, I am asking that cylinders that I fill not be double disced. Thanks Ken...
I was not aware double disking was at fault in that incident, could you please elaborate?
If I remember correctly from my dive shop days, there are two kinds of burst disks. The ones that are stamped on the outside are the one piece units. The 3000 were for tanks rated to 2250 and as you went up in tank pressure you also went up in disk pressure. Then you have some that are three piece units. These you have the plug, the disk, and a plastic washer. Every disk has its rating on the copper disk itsself. The problem is on the one piece you can't see it, so they stamp it on the plug part. The only difference in the two is how easy it is for the dive shop to change one. Don't quote me on any of this as I am trying to remember from a long time ago
It wasn't. I believe what dogdiver meant is that a cylinder explosion is a serious event, so why take any chances whatsoever?
I certainly agree, however if you're going to change practices to prevent a specific accident in the future, wouldn't it be best to change practices that actually caused the accident? If you don't want to take any chances filling your tanks, then stop diving, if you want to take steps that actually increase safety then have your tanks properly inspected and cleaned and filled only at reputable fill stations to their rated pressure. These burst disk threads are the same arguments everytime, at least with this one I learned where I won't be filling my tanks in the future.
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