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This report investigates critical aspects of the Advanced Boiling Water Reactor (ABWR) model in the context of the Fukushima disaster. We explore junctions, discharge coefficients, and dimensions of passive flooder and COPS systems, focusing on their influence on pressure, core temperature, and gas concentrations. The analysis includes critical thresholds for steam, air, and hydrogen mixtures concerning combustion and explosion risk. Key outcomes highlight the relationship between water vapor interactions with metals and hydrogen concentration, emphasizing safety protocols in nuclear reactor operations.
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introduction • ABWRmodel
上周問題 • 1.discharge coeffcient? • 2.junction 15 面積? 內徑0.200m,長度2.0m,面積 0.0314 m2 Passive Flooder 內徑0.1 m,長度1.7m,面積 0.0785 m2 COPS 內徑0.203 m (8 in),長度2 m,面積0.0324 m2
結果與討論 • Fukushimacase
主系統壓力 爐心溫度 SRV opened Relocation COPS opened RPV failed
乾井壓力 抑壓池壓力 COPS Opened
乾井氣體溫度 下乾井氫氣濃度 PF opened
結果與討論 • Fukushimacase junction 15 = 0.62e5 pa junction 16 = 1.013 e4 pa