[1H01-07] Resilience of Nuclear Structures

[1H06] Development of Failure Mitigation Technologies for Improving Resilience of Nuclear Structures

(28)Passive Safety Structure for Improving Resilience of Next-Generation Nuclear Power Plants under Extremely High Temperature Conditions

*Satoshi FUTAGAMI¹, Masanori ANDO¹, Hidemasa YAMANO¹, Naoto KASAHARA² (1. JAEA, 2. UTokyo)

Keywords:resilience, nuclear structures at evaluated temperature, LOHRS, reactor vessel, passive safety structure

To improve resilience of next-generation nuclear power plants, the authors have performed structural analyses assuming a protected loss of heat sink event, which may cause all decay heat removal systems to lose their functions immediately after reactor shutdown. From the results of these analysis, the authors developed a passive safety structure under extremely high temperatures.