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Advances in Materials Science and Engineering
Volume 2016, Article ID 5380835, 10 pages
http://dx.doi.org/10.1155/2016/5380835
Research Article

Influence of Concrete Properties on Molten Core-Concrete Interaction: A Simulation Study

1School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
2Central Research Institute of Building and Construction Co., Ltd., Beijing, China

Received 20 May 2016; Revised 14 October 2016; Accepted 23 October 2016

Academic Editor: Patrice Berthod

Copyright © 2016 Jin-yang Jiang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In a severe nuclear power plant accident, the molten core can be released into the reactor pit and interact with sacrificial concrete. In this paper, a simulation study is presented that aims to address the influence of sacrificial concrete properties on molten core-concrete interaction (MCCI). In particular, based on the MELCOR Code, the ferrosiliceous concrete used in European Pressurized Water Reactor (EPR) is taken into account with respect to the different ablation enthalpy and Fe2O3 and H2O contents. Results indicate that the concrete ablation rate as well as the hydrogen generation rate depends much on the concrete ablation enthalpy and Fe2O3 and H2O contents. In practice, the ablation enthalpy of sacrificial concrete is the higher the better, while the Fe2O3 and H2O content of sacrificial concrete is the lower the better.