[3K01-09] 1F Accident 2

[3K01] Estimation of RPV damage and fuel debris relocation behavior in the PCV at Fukushima Daiichi Nuclear Power Station

(1)Development of 3D estimation diagrams and the debrisEye

*Takuya Yamashita¹, Kenta Shimomura¹, Eiichi Nagai², Tomohiro Yasumatsu³, Shinya Mizokami^4,1 (1. JAEA, 2. Prometech Software, 3. NDD, 4. TEPCO HD)

Keywords:Fukushima Daiichi Nuclear Power Station, Decommissioning, Severe accident, debrisEye

The development of estimation techniques for RPV damage and fuel debris relocation behavior in the PCV is being performed in project of Decommissioning, Contaminated Water and Treated Water Management (Development of Analysis and Estimation Technologies for Characterization of Fuel Debris). The outline of the project and 3D estimation diagrams to be developed reflecting the results of the comprehensive evaluation of the results of (2), (3) accident progression behavior, (4), (5) RPV damage, and (6), (7), (8) and (9) the core material relocation behavior in the series presentations are reported. The development of a 3D view application (debrisEye) that displays 3D estimation diagrams and stores the information obtained from the internal investigation is also reported.