[2G05-09] Analysis Method Development 1

[2G05] Supercritical transient analysis in hypothetical fuel debris by multi-region approach based on integral kinetic model

*Delgersaikhan Tuya¹, Toru Obara² (1. Department of Nuclear Engineering, Tokyo Institute of Technology, 2. Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology)

Keywords:Fukushima Daiichi, fuel debris, supercritical transient, multi-region approach, integral kinetic model

Supercritical transient analysis in the hypothetical fuel debris system is performed using the newly developed multi-region approach based in the integral kinetic model. The hypothetical system roughly imitates a possible fuel debris formation at the Fukushima Daiichi NPS. Use of the multi-region approach allows to model the system in a region-wise manner so that region-dependent quantities can be obtained.