29 Aug 96 21:12, STAN DEAN wrote to ACHIM LOHSE:
 SD> For the Steel rated at 2250 lbs I believe the burst disk is 3500 lbs and
 SD> a 3000 lbs is 5000 lbs.
I could go with the 3500 psi for the 3AA steel tank (maybe), but you're way 
out of line with your figure for the aluminum 3AL cylinder.  I would expect 
the aluminum cylinder to fail somewhere around 5000 psi.  The disk will blow 
somewhere between 3800psi and 4000 psi.
I have been around many a tank when the burst disk ruptured, both in the shop 
(while being filled) and at the dive site (cooking in someone's trunk).  I 
have never witnessed the failure of a tank.....and hope I never will.  I've 
seen dumbasses who've double disked their tanks so they could pack more air 
in them. What they're left with is a cylinder which will fail before the 
burst disk ruptures.....sort of like putting a penny in a fuse box.
Jay
PADI M-9033
--- GoldED/386 2.50+
(1:379/41.5)
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