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Date: Wed, 24 Feb 1999 03:58:07 +0100
To: techdiver@aquanaut.com
From: Hans Petter Roverud <proverud@on*.no*>
Subject: RE: Equipment Questions
Burst disks, in my view, try to correct a non-existing problem, thus adding 
another failure point and no benefits. As mentioned, if you expose a tank 
to a fire the O-ring goes long before the tank explodes. European tanks are 
not equipped with burst disks and we don't exactly miss them. Doubling the 
burst disk may correct the problem, but it doesn't address the issue 
directly. US and Canada, please convince your authorities that burst disks 
are obsolete and get rid of them! You may say J-valves are a misconceived 
safety precaution but this is even less useful. With most issues there's a 
trade-off between benefits and disadvantages -- in this case there are no 
practical benefits whatsoever!

regards,

Hans

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