protection system of CPR1000 project

 

 

SHI Hong liang, YAO Xing rui, WANG Yong xin, SUN Ming jun

 

(Liaoning Hongyanhe Nuclear Power Co., Ltd., Dalian 11601, China)

 

 

Abstract: Aiming at the problem that the first out function was not available in particular stage (From the reactor starting to the turbine is latched), when Hongyanhe nuclear power plant reactor in the starting progress, the design purposes,implementation scheme, judgment principles of first out function and the process of system state when the nuclear power plant is starting, were researched.Through the research about the particular stage of the reactor crew, according to the logic of reactor protection and the actual state of progress system startup, optimization scheme was proposed based on the current state of the first out functional. The results indicate that the optimization scheme can reflect the real demand of the unit when it is starting up,and solve the problem that the first out function is not available in particular stage(especially the start up of the reactor to the turbine latched),improve the availability of the first out function.

 

Key words: nuclear power plant; CPR100 project; first fault function; optimization