G - Physics – 21 – C
Patent
G - Physics
21
C
G21C 17/032 (2006.01) G21C 9/02 (2006.01) G21C 17/108 (2006.01) G21D 3/08 (2006.01)
Patent
CA 2056535
To detect core-wide and regional neutron flux oscillations in a nuclear reactor core induced by thermal-hydraulic instabilities, local power range monitoring (LPRM) strings radially distributed throughout the core and having plural vertically spaced neutron flux detectors are locally assigned to individual oscillation power range monitoring (OPRM) cells radially distributed throughout the core. Groups of OPRM cells are assigned to different OPRM channels based on their geographical positions. Detector signals of the LPRM strings assigned to each OPRM cell are processed pursuant to a unique trip algorithm to detect neutron flux oscillations, and, upon meeting prescribed amplitude and frequency criteria, the assigned OPRM channel is tripped. Suppression of a thermal hydraulic instability is initiated when at least two OPRM channels assigned to geographically adjacent OPRM cells are tripped.
Kumar Kiran
Watford Glen Alan
Company General Electric
Craig Wilson And Company
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