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>Subject:     Re: Burst disks
>Sent:        97-01-10 01.42
>Received:    97-01-10 15.38
>From:        Mark Welzel, mark@mr*.co*
>To:          Techdiver, techdiver@terra.net
>
>Wouldn't proper maintenance of valves make removing burst
>disks unnecessary? And wasn't it not too long ago that in
>Florida a tank was being filled and exploded because the
>burst disk was plugged? I believe the attendant was killed
>also. Maybe the tank shouldn't have been overfilled, but
>we all know THAT happens all the time.
>
>So George's advice to all the new divers on this list is to
>go out and remove the burst disks from their tanks, because
>HE is THE EXPERT (self-proclaimed) and that is the RIGHT WAY.
>That sounds kinda irresponsible to me. How many of the people
>reading this list are also going to get a set of punches
>and do their own hydro's, that coupled with non-functioning
>burst disks ought to be quite explosive! And when some new
>diver buys a set of tanks from someone doing it George's
>way, who is going to save him?
>
>Mark

If burst discs are so good for safety, how do you explain that we 
europeans
can live without them? The problem you might have with overfilling is 
probably due to 
the many different pressures used in the US. For new tanks in Sweden the 
regulation states thet they shall not burst at two times the test 
pressure. And the diving industry has not been abel to invent "necessary" 
VIPs to extract extra money from the divers. We are still alive and well, 
and fill some of our tanks to 300 bar (4350 psi).

/Sten

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