B112 革新的簡素化原子力発電プラント用蒸気インジェクタ駆動静的炉心注水システムの実験と解析評価(軽水炉,OS-8 軽水炉・新型炉・核燃料サイクル(1),一般講演,地球温暖化防止と動力エネルギー技術)

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  • B112 Experiments and Analytical Simulation on Steam-Injector-driven Passive Core Injection System for Innovative-Simplified Nuclear Power Plant

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A Steam Injector (SI) is a simple, compact and passive pump. We are developing this innovative concept by applying the SI system for core injection system in emergency core cooling systems (ECCS) to further improve the safety of nuclear power plants. Passive ECCS in nuclear power plants would be inherently very safe and would prevent severe accidents by keeping the core covered with water (Severe accident-free concept). The passive core injection system (PCIS) driven by high-efficiency SI is a system that, in an accident such as a LOCA (loss of coolant accident), attains a higher discharge pressure than the supply steam pressure used to inject water into the reactor by operating the SI using water stored in the pool as the water supply source and steam contained in the reactor as the source of pressurization energy. This report describes the experiments and the analytical simulation on a SI-driven PCIS for innovative-simplified nuclear power plant. In addition, we conducted the analytical simulations of SI, which grew in size for the actual nuclear power plant.

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