核电站延伸运行技术研究

Research on extended operation technology of nuclear power station

核电站延伸运行是一种特定的运行模式,是指当一回路的硼浓度接近0mg/L时,通过降温以及降功率等方式引入反应性,从而确保反应堆深燃耗继续保持功率运行。为了实现延伸运行,应科学设置特殊参数,例如一回路平均温度、蒸汽旁路系统、温度控制棒R棒死区等,也需要完善延伸运行体系。

The extended operation of nuclear power plants is a specific operation mode,which means that when the boron concentration of the primary circuit is close to 0 mg/L,reactivity is introduced by cooling and power reduction,so as to ensure the deep burnup of the reactor and continue to maintain power operation.In order to realize the extended operation,special parameters should be scientifically set,such as the average temperature of the primary circuit,the steam bypass system,the dead zone of the temperature control rod and the R rod,etc.,and the extended operation system also needs to be improved.