1. Reaction behavior between B4C, 304 grade of stainless steel and Zircaloy at 1473 K.
- Author
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Sasaki, Ryosuke, Ueda, Shigeru, Kim, Sun-Joong, Gao, Xu, and Kitamura, Shin-ya
- Subjects
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DECOMMISSIONING of nuclear power plants , *STAINLESS steel , *ZIRCONIUM alloys , *TEMPERATURE effect , *NUCLEAR reactions , *MELTING - Abstract
For a better understanding of the decommissioning of the Fukushima-daiichi nuclear power plant, the melting behavior of the control blade and the channel box should be clarified. In Fukushima nuclear reactor, the channel box was made of Zircaloy-4, and the control rode is made of B 4 C together with stainless steel cladding and sheath. In the study, the interaction among B 4 C, stainless steel (SUS), and Zircaloy-4 was investigated at 1473 K in either argon or air atmosphere. In argon, Zircaloy is melted by the diffusion of elements from SUS, and SUS was melted at 1473 K by the diffusion of C and B. In air, SUS reacted with B 2 O 3 and formed an oxides melt firstly. Then, the oxidized Zircaloy contacted with this melt and fused. Moreover, the progress of core melting process during severe accident under different atmospheres was firstly discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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