Posted by Eins on January 29, 2001 at 21:29:45:
In Reply to: Re: The + Rating And Some Facts, For A Change posted by Bill Johnson on January 29, 2001 at 15:02:02:
Bill wrote
>>Eins wrote:
>>"A hydro measures stress and structural integrity."
>>Eins, you are wrong. A hydro, according to 49CFR173.302, measures elastic expansion.
Bill,
Stress results from elastic expansion. With expansion measured (and put into perspective), the test also (indirectly) measures stress.
>>In fact, in the revised regulations being proposed by the DOT, the service pressure of LP steel tanks will be raised to incorporate the 10% increase and do away with the confusion over the plus rating altogether on new tanks.
Bill, which part did you not understand of this Diverlink quote:
"In fact, in the revised regulations being proposed by the DOT, the service pressure of LP steel tanks will be raised to incorporate the 10% increase and do away with the confusion over the plus rating altogether on new tanks."
You wanted the link to the Diverlink page.
Here it is again for you:
http://diverlink.com/gear/tankfills.htm
>>Also, there is no requirement that tanks be hydrostatically tested.
I don't understand what you could possibly mean.
Eins