On the neutron noise diagnostics of pressurized water reactor control rod vibrations II. Stochastic vibrations
Journal Article
·
· Nucl. Sci. Eng.; (United States)
In an earlier publication, using the theory of neutron fluctuations induced by a vibrating control rod, a complete formal solution of rod vibration diagnostics based on neutron noise measurements was given in terms of Fourier-transformed neutron detector time signals. The suggested procedure was checked in numerical simulation tests where only periodic vibrations could be considered. The procedure and its numerical testing are elaborated for stochastic two-dimensional vibrations. A simple stochastic theory of two-dimensional flow-induced vibrations is given; then the diagnostic method is formulated in the stochastic case, that is, in terms of neutron detector auto- and crosspower spectra. A previously suggested approximate rod localization technique is also formulated in the stochastic case. Applicability of the methods is then investigated in numerical simulation tests, using the proposed model of stochastic two-dimensional vibrations when generating neutron detector spectra that simulate measured data.
- Research Organization:
- Central Research Inst. for Physics, Budapest
- OSTI ID:
- 6280321
- Journal Information:
- Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Journal Issue: 1 Vol. 88:1; ISSN NSENA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
BARYON REACTIONS
CONTROL ELEMENTS
DIAGNOSTIC TECHNIQUES
FLUCTUATIONS
FOURIER TRANSFORMATION
HADRON REACTIONS
INTEGRAL TRANSFORMATIONS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MECHANICAL VIBRATIONS
NEUTRON DETECTORS
NEUTRON REACTIONS
NEUTRON SPECTRA
NUCLEAR REACTIONS
NUCLEON REACTIONS
PWR TYPE REACTORS
RADIATION DETECTORS
REACTOR COMPONENTS
REACTOR NOISE
REACTORS
SIGNALS
SPECTRA
STOCHASTIC PROCESSES
TESTING
TRANSFORMATIONS
TWO-DIMENSIONAL CALCULATIONS
VARIATIONS
WATER COOLED REACTORS
WATER MODERATED REACTORS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
BARYON REACTIONS
CONTROL ELEMENTS
DIAGNOSTIC TECHNIQUES
FLUCTUATIONS
FOURIER TRANSFORMATION
HADRON REACTIONS
INTEGRAL TRANSFORMATIONS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MECHANICAL VIBRATIONS
NEUTRON DETECTORS
NEUTRON REACTIONS
NEUTRON SPECTRA
NUCLEAR REACTIONS
NUCLEON REACTIONS
PWR TYPE REACTORS
RADIATION DETECTORS
REACTOR COMPONENTS
REACTOR NOISE
REACTORS
SIGNALS
SPECTRA
STOCHASTIC PROCESSES
TESTING
TRANSFORMATIONS
TWO-DIMENSIONAL CALCULATIONS
VARIATIONS
WATER COOLED REACTORS
WATER MODERATED REACTORS