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The Development of a Mechanistic Model of MCCI Under Severe Accidents

[+] Author Affiliations
Wei Wei

Harbin Engineering University, Harbin, China

Kelin Qi, Fuchang Shan, Yanfang Chen, Fude Guo

China Nuclear Power Operation Technology Co., Ltd., Wuhan, China

Paper No. ICONE21-15088, pp. V003T06A002; 5 pages
  • 2013 21st International Conference on Nuclear Engineering
  • Volume 3: Nuclear Safety and Security; Codes, Standards, Licensing and Regulatory Issues; Computational Fluid Dynamics and Coupled Codes
  • Chengdu, China, July 29–August 2, 2013
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5580-5
  • Copyright © 2013 by ASME


This paper describes a mechanistic model of the molten core-concrete interaction (MCCI) process under severe accidents, and selects the Daya-Bay nuclear power plant as the research object to calculate and analyze the process of the MCCI when the station blackout (SBO), or loss of coolant (LOCA) severe accident serial is happened. The calculation results of this procedure are compared with the large-scale analysis programs MELCOR to verify the reasonableness and correctness of the model. The results indicate that the model present in this paper can simulate the MCCI process correctly and reasonably under multi-serial severe accidents.

Copyright © 2013 by ASME
Topics: Accidents



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