熱力学モデルによる福島第一原子力発電所1 号機 非常用凝縮器（IC）挙動の推定 （それでもIC は動いていた）
Behaviour of isolation condensers (ICs) in accident of Fukushima Daiichi Nuclear Power Plant, Unit 1, based on thermodynamic model (And yet, the IC was working after Tsunami arrival)
著者:
円山 重直 Shigenao MARUYAMA
発刊日:
公開日:
AccidentFukushima Daiichi Unit 1Isolation CondenserNuclear Power Plant
概要
In order to investigate the process of Accident of Fukushima Nuclear Plants, an accident scenario of Fukushima Daiichi Nuclear Power Plant, Unit 1 is analyzed from the data open to the public. Phase equilibrium process model and adiabatic expansion model were introduced. Original data reported in the first stage of the accident were examind to clalify the behaviour of the isolation condensers (ICs) which are generally believed unfunctional after the arrival of Tsunami and station blackout. The original data and observation reports verified that the so called “fail safe” system to close the valves in IC did not work proparly due to the shutdown of AC power. The reports also showed the evidence that the operators injected water to the storage tank of IC.
