[1C01-03] Severe Accident 1

[1C01] Melting behavior of reactor core during severe accident of BWR

(1) Fracture behavior of stainless structure materials by molten metallic and oxidic corium

*Takehiro Sumita¹, Yoshinao Kobayashi¹, Shigeru Ueda², Toshio Nakagiri³ (1. Tokyo Institute of Technology, 2. Tohoku University, 3. JAEA)

Keywords:Severe accident, Fuel debris retrieval, Eutectic melt, Reactor materials, Stainless steel

This study aims to evaluate the fracture behavior of solid stainless steel (SS) by molten corium such as SS-B₄C metallic corium, originated from control rod, and UO₂-Zircaloy oxidic corium, originated from fuel rod. Immersion tests of SS rod with molten SS-B₄C melt and molten UO₂-Zr(O) melt were carried out.