Reactor pressure vessel RVI

Reactor vessel internal (RVI) RVI is a large precision structure, its structural core is to have accurate control rod driveline, make the control rod go up and down smoothly, ensure the startup, control and shutdown of reactor, the core technology includes large precision machining, precision welding and precision alignment. Annual output of 8-10 nuclear island main equipment Used to supply for the QinshanI、II、Fangjiashan、Dayawan、Hongyanhe、Taishan…… As being the skeleton of reactor core, RVI is one of the key equipment of nuclear island. It has six core functions: housing fuel assembly and auxiliary assembly, providing positioning and preload, bearing the load from core components; providing reliable and accurate guidance for the control rod assembly; providing coolant channel for core and its appropriate flow distribution; shielding neutron and γ rays to reduce irradiation aging of pressure vessel; providing fixed support and guidance for core neutron flux measuring and temperature measuring, providing fixed position for pressure vessel irradiation surveillance specimen; providing the secondary support for crore fallen. RVI is a large precision structure, its structural core is to have accurate control rod driveline, make the control rod go up and down smoothly, ensure the startup, control and shutdown of reactor, the core technology includes large precision machining, precision welding and precision alignment. Currently our company masters manufacturing technology for the 2+ generation RVI such as CPR1000, M310, and the 3rd generation RVI such as AP1000, HPR1000, CAP1400, as well as the 4th generation RVI such as HTR.