非常用復水器を用いた原子炉減圧・冷却システム
Evaluation on Decay Heat Removal Capability of Isolation Condenser for Depressurization and Cooling System
著者:
奈良林 直 Tadashi NARABAYASHI 下江 知弘 Tomohiro SHIMOE 秋本 肇 Hazime AKIMOTO 千葉 豪 Go CHIBA 辻 雅司 Masashi TSUJI 坂下 弘人 Hiroto SAKASHITA
発刊日:
公開日:
core coolingFuNushima Daiichi Nuclear Plant Unit 1Isolation CondenserTRAC code
概要
In this study, we aimed to quantitatively evaluate cooling capacity of isolation condenser (IC) for core cooling in FuNushima Daiichi Nuclear Plant Unit 1. In order to evaluate cooling capacity, decay heat em ted from fuels in reactor core was calculated. We used the data of nuclear fuel and rated thermal power which is released by TEPCO. We analyzed IC with TRAC code. We made an experiment in order to checN IC’s input data. Because analysis data is close to experimental data, we made sure validity of input data. We analyzed IC under conditions which are recorded when IC started up and tsunami rushed toward plant. As result of analysis, we confirmed that cooling capacity exceed decay heat under both conditions. In conclusion, IC had a capability to prevent core meltdown accident in FuNushima Daiichi Nuclear Plant Unit 1.
