Research on Design Method of HPR1000 Reactor Vessel Internals

The forward design method of HPR1000 reactor vessel internals (RVI) is studied to respond to the new design requirements of HPR1000 third-generation nuclear power reactor and standardize the structural design of HPR1000 RVI. RVI is complex equipment at the system level, and its structural design affects many aspects of reactor performance. Through the demand analysis of RVI functions, the causal relationship among various disciplines is clarified, and the functional requirements items that RVI design needs to meet are established. At the same time, based on the functional requirements of RVI and the empirical feedback of reactor type at home and abroad, the quantitative evaluation criteria for important functional requirements items are established, and the quantitative indicators are used to standardize the RVI design. Through the study of RVI design method, a total of 72 functional requirements items in 10 aspects of HPR1000 RVI are established. At the same time, according to the analysis and calculation, the quantitative evaluation criteria of each analysis are determined, and clear indicators are put forward for each analysis and calculation. This method realizes the forward design of RVI, covers its full life cycle functional requirements, and ensures the reliability and safety of RVI design.