Abstract
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.
Original language | English (US) |
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State | Published - 2014 |
Event | 2014 International Conference on Physics of Reactors, PHYSOR 2014 - Kyoto, Japan Duration: Sep 28 2014 → Oct 3 2014 |
Conference
Conference | 2014 International Conference on Physics of Reactors, PHYSOR 2014 |
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Country/Territory | Japan |
City | Kyoto |
Period | 9/28/14 → 10/3/14 |
Keywords
- BWR Stability
- Power Oscillations
- Uncertainty Analysis
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Nuclear Energy and Engineering