TRACE/PARCS analysis of the OECD/NEA Oskarshamn-2 BWR stability benchmark

Tomasz Kozlowski, Thomas Downar, Yunlin Xu, Aaron Wysocki, Kostadin Ivanov, Jeffrey Magedanz, Matthew Hardgrove, Jose March-Leuba, Nathanael Hudson, Diana Woodyatt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 code system, and further 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. The event provides coupled code validation for a challenging BWR stability event, which involves the accurate simulation of neutron kinetics (NK), thermal-hydraulics (TH), and TH/NK. coupling. The success of this work has demonstrated the ability of the 3-D coupled systems code TRACE/PARCS to capture the complex behavior of BWR stability events. The problem was released as an international OECD/NEA benchmark, and it is the first benchmark based on measured plant data for a stability event with a DR greater than one. Interested participants are invited to contact authors for more information.

Original languageEnglish (US)
Title of host publicationInternational Conference on the Physics of Reactors 2012, PHYSOR 2012
Subtitle of host publicationAdvances in Reactor Physics
Pages1996-2010
Number of pages15
StatePublished - Dec 6 2012
EventInternational Conference on the Physics of Reactors 2012: Advances in Reactor Physics, PHYSOR 2012 - Knoxville, TN, United States
Duration: Apr 15 2012Apr 20 2012

Publication series

NameInternational Conference on the Physics of Reactors 2012, PHYSOR 2012: Advances in Reactor Physics
Volume3

Other

OtherInternational Conference on the Physics of Reactors 2012: Advances in Reactor Physics, PHYSOR 2012
CountryUnited States
CityKnoxville, TN
Period4/15/124/20/12

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Keywords

  • BWR stability
  • Oskarshamn-2
  • TRACE/PARCS

ASJC Scopus subject areas

  • Nuclear Energy and Engineering

Cite this

Kozlowski, T., Downar, T., Xu, Y., Wysocki, A., Ivanov, K., Magedanz, J., Hardgrove, M., March-Leuba, J., Hudson, N., & Woodyatt, D. (2012). TRACE/PARCS analysis of the OECD/NEA Oskarshamn-2 BWR stability benchmark. In International Conference on the Physics of Reactors 2012, PHYSOR 2012: Advances in Reactor Physics (pp. 1996-2010). (International Conference on the Physics of Reactors 2012, PHYSOR 2012: Advances in Reactor Physics; Vol. 3).