[2M12-17] Fuel Behavior in Accidents

[2M16] Behavior of high-burnup advanced fuels under reactivity-initiated accident (RIA) and loss-of-coolant accident (LOCA)

(5) Behavior of high-burnup advanced fuel during LOCA

*Takafumi Narukawa¹, Hiroyuki Uehara¹, Masaki Amaya¹ (1. JAEA)

Keywords:LOCA, high-burnup fuel cladding, advanced fuel cladding, Fracture boundary, Post-LOCA mechanical strength

JAEA has conducted studies on fuel behaviors during loss-of-coolant accidents (LOCAs) using high-burnup advanced fuel cladding tubes. We report the evaluation results on the effects of the burnup extension and the change in the alloy compositions on the fracture boundary and the post-LOCA mechanical strength of the fuel cladding tubes.