[Sneap] Fast closing gate-valves

[Powell E. Barber]

Hello,

We have a system similar to the second one that Chris listed.  Our bore 
is much smaller than 4" however.  It is spring loaded.  Compressed is 
used to open the valve, which is then mechanically locked.  An explosive 
squib is used to "unlock" the valve and the spring closes it.  A high 
voltage is connected to automotive spark plugs installed some tens of 
yards from the valve.  When a vacuum accident occurs, the spark plug 
will fire and the current through the circuit ignites the squib.

The control electronics also has test fire capability.

Regards,

Powell

On Thu, 12 Jun 2008, Toader, Ovidiu wrote:

> The host for the 2008 SNEAP annual meeting is the University of Michigan at Ann Arbor.  The meeting dates are: October: 12 - 17, 2008.
> The meeting web link is: http://www-ners.engin.umich.edu/research/Mibl/Sneap/2008.htm
> 
> 


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Powell E. Barber,  Sr. Engineer     850.644.6477 voice
Department of Nuclear Services      850.644.9848 fax
37A Collins Research Lab 
255 Atomic Way
Florida State University
Tallahassee  FL  32306-4470

barber at nucmar.physics.fsu.edu
http://fsunuc.physics.fsu.edu/~barber/
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