Numerical study on observed decay ratio of coupled neutronic-thermal hydraulic instability in ringhals unit 1 under random noise excitation

Journal of Nuclear Science and Technology

Volumn 39, Issue 2, 2002, Pages 138-149

  Hotta, Akitoshi ^a   Ninokata, Hisashi ^b  

^a TEPCO SYSTEMS CORPORATION   (Japan)

^b TOKYO INSTITUTE OF TECHNOLOGY   (Japan)

Author keywords

ACCORD N; AR method; Decay ratio; ENTR E; Maximum entropy method; Numerical analysis; Numerical solution; Numerical study; Power spectrum; Reactor core; Regional instability; Ringhals 1 reactor; System identification; TRAC BF1

Indexed keywords

ALGORITHMS; ENTROPY; MODERATORS; NEUTRONS; NUMERICAL ANALYSIS; THERMAL NOISE;

DECAY RATIO;

REACTOR CORES;

EID: 0036475358     PISSN: 00223131     EISSN: None     Source Type: Journal    
DOI: 10.1080/18811248.2002.9715167     Document Type: Article

References (20)

1. H. Hotta, M. Honma, H. Ninokata, Y. Matsui, “BWR regional instability analysis by TRAC/BF1-ENTREE (I); Application to density-wave oscillation,” Nucl. Technol., 135, 1 (2001).
2. A. Hotta, M. Zhang, H. Ninokata, “BWR regional instability analysis by TRAC/BF1-ENTREE (II); Application to Ringhals Unit 1 stability test,” Nucl. Technol., 135, 17 (2000).
3. Y. Shimazu, Y. Nakano, Y. Tahara, “Development of a digital reactivity meter and reactor physics data processor,” Trans. Am. Nucl. Soc., 52,412(1986).
4. I. Pazsit, “Development of core diagnostic methods and their application at Swedish BWRs and PWRs,” J. Nucl. Sci. Technol., 36[6], 473 (1999).
5. R. Oguma, et al, “Investigation of power oscillation mechanisms based on noise analysis at Forsmark 1 BWR,” Ann. Nucl. Energy, 23[6], 469 (1996).
6. I. Pazsit, “Determination of reactor stability in case of dual oscillations,” Ann. Nucl. Energy, 22[6], 377 (1995).
7. T. H. J. J. Van der Hagen, I. Pazsit, O. Thomson, “Methods for the determination of in-phase and out-of-phase stability characteristics of a BWR,” Nucl. Technol., 107, 193 (1994).
8. T. H. J. J. Van der Hagen, R. Zboray, W. J. M. de Kruijf, “Questioning the use of the decay ratio in BWR stability monitoring,” Ann. Nucl. Energy, 27, 727 (2000).
9. K. Hashimoto, A. Hotta, T. Takeda, “Neutronic model for modal multichannel analysis of out-of-phase instability in boiling water reactor cores,” Ann. Nucl. Energy, 24[2], 99 (1997).
10. Y. M. Farawila, “Application of modal neutron kinetics to boiling water reactor oscillation problems,” Nucl. Sci. Eng., 129, 261 (1998).
11. T. Ama, T. Takeda, “An application of bifurcation theory to regional stability analysis in BWRs,” Preprints 2000FallMtg., At. Energy Soc. Jpn., Aomori, G55, (2000), [in Japanese].
12. J. A. Boure, J. M. Delhaye, Two-Phase Flow and Heat Transfer of the Power and Process Industries, Chapter 12, Hemisphere, (1981).
13. L. A. Carmichael, R. O. Niemi, Transient and Stability Tests at Peach Bottom Atomic Power Station Unit 2 at End ofCycle 2, EPRINP-564, (1978).
14. A. Hotta, K. Tate, H. Ninokata, “Nonlinear iterative nodal method applied to neutron flux modal analysis,” J. Nucl. Sci. Technol., 36[11], 1009 (1999).
15. L. Ljung, T. Soderstrom, Theory and Practice of Recursive Identification, MIT Press, (1983).
16. J. P. Burg, “Maximum entropy spectral analysis,” Ph. D. Dissertation, Dept. of Geophysics, Stanford University, (1975).
17. T. Anegawa, A. Hotta, “Current topics of BWR nuclear thermal hydraulic stability: Regional instability and activities in design and operation,” Nihon-Genshiryoku-Gakkai Shi (J. At. Energy Soc. Jpn), 38[5], 348 (1996), [in Japanese].
18. M. A. Vince, R. T. Jr. Lahey, “On the development of an Objective Flow Regime Indicator,” Int. J. Multiphase Flow, 8[2], 93 (1982).
19. R. Kozma, “Studies on the relationship between the statistics of void fraction fluctuations and the parameters of two-phase flows,” Int. J. Multiphase Flow, 21[2], 241 (1995).
20. G. Kosaly, R. Sanchez, “Calculation of the sensitivity volume of a BWR in-core detector above 2 Hz,” Trans. Am. Nucl. Soc., 41,620(1982).