Induced nuclear reactions: processes – systems – and elements – With control of reactor – By electronic signal processing circuitry
Patent
1989-05-01
1991-06-18
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
With control of reactor
By electronic signal processing circuitry
376216, 376218, 364492, G21C 736
Patent
active
050248014
ABSTRACT:
The present invention is a system that updates a pressurized water reactor core model, or data file describing the core, periodically using measured values determinable from core instrumentation. The system starts with a calibrated model calibrated from a flux map and a boron concentration measurement both determined monthly. Reactor system measurements are performed and the model is updated from the measurements using a standard depletion calculation. Some of the measured values are also used to determine measured actual values of axial offset and pinch. Standard neutronics equations are used to calculate analytical values of axial offset and pinch from the model, and the measured and calculated values are compared. If a deviation beyond a certain magnitude is detected, buckling coefficients in the model are adjusted to compensate for model drift. The updated model is stored and a time-out period is entered until it is time for another drift compensation cycle to start. The adjustment overcompensates the coefficients until the difference between the measured values and calculated values is slightly less in magnitude than the deviation but of an opposite sign. The adjusted and updated model can be used for accurate initial values of a core predictor or for display to the operator.
REFERENCES:
patent: 4637910 (1987-01-01), Impink, Jr.
patent: 4642213 (1987-02-01), Impink, Jr.
patent: 4711753 (1987-12-01), Impink, Jr. et al.
patent: 4774050 (1988-09-01), Impink, Jr.
patent: 4803039 (1989-02-01), Impink
patent: 4839134 (1989-06-01), Impink
patent: 4927594 (1990-05-01), Heibel
Duryea John L.
Grobmyer Louis R.
Impink, Jr. Albert J.
Morita Toshio
Sariscak Robert E.
Dermer Z. L.
Walsh Donald P.
Westinghouse Electric Corp.
LandOfFree
Reactor core model update system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reactor core model update system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reactor core model update system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-144555