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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 165 - 175 (11page)
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초록· 키워드
오류제보하기
The application of neutron noise analysis (NNA) to the ex-core neutron detector signal formonitoring the vibration characteristics of a reactor core support barrel (CSB) wasinvestigated.
Ex-core flux data were generated by using a nonanalog Monte Carlo neutron transportmethod in a simulated CSB model where the implicit capture and Russian roulette techniquewere utilized. First and third order beam and shell modes of CSB vibration weremodeled based on parallel processing simulation. A NNA module was developed to analyzethe ex-core flux data based on its time variation, normalized power spectral density,normalized cross-power spectral density, coherence, and phase differences. The data werethen analyzed with a fuzzy logic module to determine the vibration characteristics.
The ex-core neutron signal fluctuation was directly proportional to the CSB's vibrationobserved at 8Hz and15Hzin thebeammodevibration, and at 8Hz inthe shellmodevibration.
The coherence result between flux pairs was unity at the vibration peak frequencies.
A distinct pattern of phase differences was observed for each of the vibration models.
The developed fuzzy logic module demonstrated successful recognition of the vibrationfrequencies, modes, orders, directions, and phase differences within 0.4 ms for the beamand shell mode vibrations
목차
등록된 정보가 없습니다.
참고문헌 (10)
참고문헌 신청
American Society of Mechanical Engineers / 2007 / Standards and Guides for Operation and Maintenance of Nuclear Power Plants
B. Dede / 2013 / Mathematics of Fuzzy Sets and Fuzzy Logic / Springer
B.T. Lubin / 1988 / Analysis of internals vibration monitoring and loose part monitoring systems data related to the St. Lucie 1 thermal shield failure / Prog. Nucl. Energy :
H.G. Kang / 1995 / A real time monitoring system of core support barrel vibration using FEM data and self-organizing neural networks / Nucl. Eng. Design : 19 ~ 29
I. Lux / 1991 / Monte Carlo Particle Transport Methods:Neutron and Photon Calculations / CRC Press
B. Dede / 2013 / Mathematics of Fuzzy Sets and Fuzzy Logic / Springer
B.T. Lubin / 1988 / Analysis of internals vibration monitoring and loose part monitoring systems data related to the St. Lucie 1 thermal shield failure / Prog. Nucl. Energy :
H.G. Kang / 1995 / A real time monitoring system of core support barrel vibration using FEM data and self-organizing neural networks / Nucl. Eng. Design : 19 ~ 29
I. Lux / 1991 / Monte Carlo Particle Transport Methods:Neutron and Photon Calculations / CRC Press
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