Detection of core thermal hydraulic oscillations
A method is described for detecting thermal hydraulic oscillation in a nuclear fission reactor core through which a reactor coolant passes while the fission reactions in the core generate neutrons and gamma radiation, comprising the steps of positioning a first plurality of sensors, which are primarily responsive to neutron flux, at a respective plurality of first locations in the core; positioning a second plurality of sensors, which are primarily responsive to gamma radiation flux, at a respective plurality of second locations in the core; generating an output signal from each of said neutron sensors, commensurate with the neutron flux at each neutron sensor; generating an output signal from each of said gamma sensors, commensurate with the gamma radiation flux at each gamma sensor; comparing each neutron sensor output signal with a respective gamma sensor output signal and generating a comparison value signal for each of said comparisons; and in response to the comparison value signals generating output data indicative of core thermal hydraulic oscillations.
- Assignee:
- Combustion Engineering, Inc., Windsor, CT (United States)
- Patent Number(s):
- US 5225149; A
- Application Number:
- PPN: US 7-767831
- OSTI ID:
- 6153717
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
220400* -- Nuclear Reactor Technology-- Control Systems
BARYON REACTIONS
BARYONS
COMPARATIVE EVALUATIONS
COOLANTS
DETECTION
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY TRANSFER
EVALUATION
FERMIONS
FLUID MECHANICS
GAMMA DETECTION
GAMMA RADIATION
HADRON REACTIONS
HADRONS
HEAT TRANSFER
HYDRAULICS
IN CORE INSTRUMENTS
IONIZING RADIATIONS
MEASURING INSTRUMENTS
MECHANICS
MONITORS
NEUTRON FLUX
NEUTRON MONITORS
NEUTRON REACTIONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEONS
OSCILLATIONS
POSITIONING
RADIATION DETECTION
RADIATION DETECTORS
RADIATION FLUX
RADIATION MONITORS
RADIATIONS
REACTOR COMPONENTS
REACTOR CORES
REACTOR INSTRUMENTATION
REACTOR MONITORING SYSTEMS