[3F11-16] Improving Resilience of Nuclear Structure

[3F11] Development of Failure Mitigation Technologies for Improving Resilience of Nuclear Structures

(15) Conceptual Study 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, deformation behavior, reactor vessel, guard vessel, LOHRS

To improve resilience of next-generation nuclear power plants, the authors have performed a structural analysis assuming a protected loss of heat sink event, which may cause all decay heat removal systems to lose their functions. The results show how the reactor vessel and guard vessel deform under extremely high temperatures.