[1C01-03] Severe Accident 1

10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)

[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.