[2K10-15] 福島第一発電所事故関連1

[2K15] Assessment of Core Status of TEPCO's Fukushima Daiichi Nuclear Power Plants

(81)Ex-vessel phenomena analysis of the accident in the Fukushima Daiichi nuclear power station Unit 1 using DSA-CVPA modules of SAMPSON

*Mirco Di Giuli¹, Hyrouchi Suzuki¹, Marco Pellegrini¹, Masaori Naitoh¹ (1.IAE)

キーワード：Severe Accident, Ex-Vessel phenomena, Hydrogen, MCCI, Sensitivity Analysis

The aim of this work is to perform a detailed analysis on the impact of the molten corium spreading and concrete ablation after the RPV failure on the PCV pressurization in the Fukushima Daiichi unit 1. In order to carry out this studies different cases were simulated varying the corium mass discharged and the pouring time using DSA1 and CVPA modules of SAMPSON.