Reactivity Management Strategy Development And Application In Pressurized Water Reactor Nuclear Power Plant

With the Nuclear Power Plant operation history,reactivity abnormal events occur frequently due to the operator mis-operation,and the interface between operator and reactor technical support engineers.Even no core damage occurs as the multiple plant protection system works,the plant operation economy is shortened by the reactivity abnormal events,and potential risks to nuclear safety are brought in.From strengthening nuclear safety barrier defense in depth perspective,reactive management has been the concern of worldwide nuclear power plant owners.In this paper,the implementation requirements,methods,and experience feedback of reactivity management in nuclear power plant are researched and analyzed.On this basis,the reactivity management technical support services by the core designer are proposed,and the preliminary implementation of successful practice of reactive management technical support in China Qinshan nuclear power plant are introduced.