速報
BWR 全電源喪失事故の解析
福島第 1 発電所 2 号機における炉心損傷までの熱水力挙動
福島第 1 発電所 2 号機における炉心損傷までの熱水力挙動
2011 年 10 巻 4 号 p. 240-244
詳細
2011 年 10 巻 4 号 p. 240-244
The analysis of the long-term station blackout accident of BWR has been performed using the TRAC-BF1 code. The actuation of RCIC was assumed, and the results were compared with the data observed at the Fukushima Daiichi power plant unit 2 reactor. BWR-5 of 1,100 MW was analyzed, while the unit 2 reactor was BWR-4 of 780 MW. The reactor pressure and the core liquid level were, however, in good agreement with the observed data. It was confirmed that the quasi-steady state continued for a long time with the RCIC actuation. The timing of recovery action, which was composed of depressurization and coolant injection, necessary for the maximum clad temperature being less than 1,500 K was studied and compared with that of the unit 2 reactor.
