Protection of reactor cores from unstable density wave oscillators
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United States of America Patent
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Nov 5, 2013
Grant Date -
Jun 7, 2012
app pub date -
Feb 7, 2012
filing date -
Apr 23, 2004
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Abstract
The present invention provides a method of operating a Boiling Water Reactor, having the steps of analyzing LPRM signals for oscilliatory behavior indicative of neutron-flux-coupled density wave oscillations, determining if oscilliatory behavior is present in the signals; initiating a reactor protective corrective action if the oscilliatory behavior is determined, and in addition, initiating corrective actions if neutron uncoupled oscillations are possible. Detecting the later is performed through analytically determined exclusion zone on the power flow map or by on-line stability calculations for several high power channels.
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