Effort to pass review for checking conformity to new regulatory requirements for high temperature engineering test reactor, 3; Reactor behavior and countermeasures during the accidents that may release large amounts of radioactive materials

Hamamoto, Shimpei  ; Shimazaki, Yosuke ; Nagasumi, Satoru; Tochio, Daisuke ; Iigaki, Kazuhiko ; Ishitsuka, Etsuo   

Regarding the countermeasures against accidents that may release a large amount of radioactive materials, which is one of the items of conformity review on the New Regulatory Requirements for HTTR (High temperature engineering test reactor), this presentation describes the concept of accident selection, the evaluation method and results of the reactor behavior at the time of the selected accident and the countermeasures to be taken at that time.