Analysis of Isolation Condenser Behavior by TRACG Code

For countermeasure of the station black out, an isolation condenser (IC) with enhancing direct-current power supply system is one of effective devices. But not so much transient heat transfer data were obtained for full scale ICs. The IC performance at the accident of the Fukushima daiichi nuclear power plant unit 1 was evaluated by TRACG code. The pressure of reactor pressure vessel was well simulated to measurements.