TY - CONF
T1 - Uncertainty analysis of the OECD/NRC Oskarshamn-2 BWR stability Benchmark
AU - Gajev, Ivan
AU - Ma, Weimin
AU - Kozlowski, Tomasz
N1 - Funding Information:
This work was supported by the U.S. Nuclear Regulatory Commission (NRC) and the Swedish Radiation Safety Authority (SSM), which is gratefully acknowledged. Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views of the NRC or SSM.
Publisher Copyright:
© 2014 Westinghouse Electric Company LLC. All Rights Reserved.
PY - 2014
Y1 - 2014
N2 - On February 25, 1999, the Oskarshamn-2 NPP experienced a stability event which culminated in diverging power oscillations with a decay ratio of about 1.4. The event was successfully modeled by the TRACE/PARCS coupled system code, and further uncertainty analysis of the event is described in this paper. The results show very good agreement with the plant data, capturing the entire behavior of the transient including the onset of instability, growth of the oscillations (decay ratio) and oscillation frequency. This provides confidence in the prediction of other parameters which are not available from the plant records. This paper shows also how an uncertainty method was implemented for the event. Comparing the calculated uncertainty with the measured uncertainty gives confidence in the BWR stability prediction.
AB - On February 25, 1999, the Oskarshamn-2 NPP experienced a stability event which culminated in diverging power oscillations with a decay ratio of about 1.4. The event was successfully modeled by the TRACE/PARCS coupled system code, and further uncertainty analysis of the event is described in this paper. The results show very good agreement with the plant data, capturing the entire behavior of the transient including the onset of instability, growth of the oscillations (decay ratio) and oscillation frequency. This provides confidence in the prediction of other parameters which are not available from the plant records. This paper shows also how an uncertainty method was implemented for the event. Comparing the calculated uncertainty with the measured uncertainty gives confidence in the BWR stability prediction.
KW - BWR Stability
KW - Power Oscillations
KW - Uncertainty Analysis
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M3 - Paper
AN - SCOPUS:85105337907
T2 - 2014 International Conference on Physics of Reactors, PHYSOR 2014
Y2 - 28 September 2014 through 3 October 2014
ER -