Criticality accident analysis in meltdown core

2015 Fiscal Year Final Research Report

• Project/Area Number: 26630481
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nuclear engineering
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Obara Toru 東京工業大学, 原子炉工学研究所, 教授 (40221858)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 福島第一原子力発電所事故 / 燃料デブリ / 臨界事故 / 放出エネルギー / 放射線量

Outline of Final Research Achievements

This study aims to establish analysis method to estimate released energy and radiation dose in the case of criticality accident of meltdown core. It was shown that it is possible to perform kinetic analysis when there are some fuel debris regions in different condition in the core by the use of newly developed code. A method was established to estimate the increase of released energy and radiation dose when fuel debris exists around the fuel debris which becomes critical.

Free Research Field

原子力学