Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Assessment of the severe accident code MIDAC based on FROMA, QUENCH-06&16 experiments

  • Wu, Shihao (School of Nuclear Science and Technology, Shaanxi Engineering Research Center of Advanced Nuclear Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University) ;
  • Zhang, Yapei (School of Nuclear Science and Technology, Shaanxi Engineering Research Center of Advanced Nuclear Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University) ;
  • Wang, Dong (School of Nuclear Science and Technology, Shaanxi Engineering Research Center of Advanced Nuclear Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University) ;
  • Tian, Wenxi (School of Nuclear Science and Technology, Shaanxi Engineering Research Center of Advanced Nuclear Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University) ;
  • Qiu, Suizheng (School of Nuclear Science and Technology, Shaanxi Engineering Research Center of Advanced Nuclear Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University) ;
  • Su, G.H. (School of Nuclear Science and Technology, Shaanxi Engineering Research Center of Advanced Nuclear Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University)
  • Received : 2021.06.09
  • Accepted : 2021.08.03
  • Published : 2022.02.25
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Abstract

In order to meet the needs of domestic reactor severe accident analysis program, a MIDAC (Module Invessel Degraded severe accident Analysis Code) is developed and maintained by Xi'an Jiaotong University. As the accuracy of the calculation results of the analysis program is of great significance for the formulation of severe accident mitigation measures, the article select three experiments to evaluate the updated severe accident models of MIDAC. Among them, QUENCH-06 is the international standard No.45, QUENCH-16 is a test for the analysis of air oxidation, and FROMA is an out-of-pile fuel rod melting experiment recently carried out by Xi'an Jiaotong University. The heating and melting model with lumped parameter method and the steam oxidation model with Cathcart-Pawel and Volchek-Zvonarev correlations combination in MIDAC could better meet the needs of severe accident analysis. Although the influence of nitrogen still need to be further improved, the air oxidation model with NUREG still has the ability to provide guiding significance for engineering practice.

Keywords

Acknowledgement

This work was supported by the project: National Key R&D Program of China (Grant No. 2019YFB1900700).

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