BWR lower plenum damage by reaction between metallic debris and structural materials

佐藤 拓未; 下村 健太; 永江 勇二

no journal, , 

During the severe accident at the Fukushima Daiichi Nuclear Power Station, a molten metal pool formed by an analytical approach might contribute to the initial failure of the lower plenum. To understand this failure behavior, high-temperature reaction tests were conducted using simulated metal debris and a test bundle that simulated the structure of the control rod drive mechanism in the lower plenum.