26 Aug 95 11:19, STAN DEAN wrote to LEE BELL:
 SD> when a tank is hydroed it is put under extreme pressure.
 SD> Yes while after years of use a tank may become fatiged(sp).
 SD> But don't forget that a tank that is rated for whatever pressure can be
 SD> marked to provide 10% more working pressure if rated after a hydro.
I could be wrong, but my understanding was that this was only for steel tanks 
undergoing their first hydro immediately after manufacture.  In other words, 
a 5 year old tank wouldn't qualify.
Jay
PADI M-9033
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