[2A03-06] Debris

[2A04] Metal-rich debris formation by solid-liquid reaction in RPV during BWR severe accident progression

(2) Reaction of B₄C with molten stainless steel

*Tatsuya Kanno¹, Takayuki Iwama¹, Ryo Inoue¹, Shigeru ueda¹ (1. Tohoku Univ.)

Keywords:Accident progression analysis, molten stainless steel, B4C

In order to clarify the reaction mechanism between 316L stainless steel, which is a structural material, and B₄C, contained in control rods, in the core meltdown accident at the Fukushima Daiichi Nuclear Power Plant caused by the Great East Japan Earthquake, we conducted a reaction test between molten 316L stainless steel and B₄C.We attempted to analyze the reaction behavior by electron probe micro-analyzer (EPMA) observation on the samples and to derive the reaction rate.