Power oscillations associated with density waves in boiling water reactors (BWRs) have been studied widely. Industrial research in this area is active since the invention of the first BWR. Stability measurements have been performed in various plants already during commissioning phase but especially the magnitude and divergent nature of the oscillations during the LaSalle Unit 2 nuclear power plant event on March 9, 1988, renewed concern about the state of knowledge oN BWR instabilities. The appropriate representation of the physical processes in the non-linear regime requires typically time domain stability analysis. The objective of this paper is to present a physical model, applicable for stability analysis in the non-linear regime, which extends to high amplitude oscillations where inlet reverse flow occurs. The application of this model gives a deeper insight into the physical reasons for the prevention of the uncontrolled divergence of BWR oscillations. The mechanisms that have a stabilizing effect are demonstrated.
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16th International Conference on Nuclear Engineering
May 11–15, 2008
Orlando, Florida, USA
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
0-7918-4814-0
PROCEEDINGS PAPER
Non-Linear BWR Stability Analysis Available to Purchase
R. Velten
R. Velten
AREVA NP, Erlangen, Germany
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F. Wehle
AREVA NP, Erlangen, Germany
A. Schmidt
AREVA NP, Erlangen, Germany
S. Opel
AREVA NP, Erlangen, Germany
R. Velten
AREVA NP, Erlangen, Germany
Paper No:
ICONE16-48395, pp. 121-128; 8 pages
Published Online:
June 24, 2009
Citation
Wehle, F, Schmidt, A, Opel, S, & Velten, R. "Non-Linear BWR Stability Analysis." Proceedings of the 16th International Conference on Nuclear Engineering. Volume 1: Plant Operations, Maintenance, Installations and Life Cycle; Component Reliability and Materials Issues; Advanced Applications of Nuclear Technology; Codes, Standards, Licensing and Regulatory Issues. Orlando, Florida, USA. May 11–15, 2008. pp. 121-128. ASME. https://doi.org/10.1115/ICONE16-48395
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