核电厂地震自动停堆功能设计研究

Design Study of Earthquake Automatic Reactor Trip Function of NPP

核电厂正常运行期间发生地震,地震仪表系统的三轴向加速度仪将检测的地震动加速度值与预先设定的阈值进行比较。如果加速度值超过阈值,则此加速度仪触发送往多样化驱动系统的地震停堆信号。多样化驱动系统在接收到触发信号后,经过符合逻辑运算后,最后发出送往反应堆棒控系统电源柜的地震自动停堆触发信号。

During the nuclear power plant in the normal operation, if there is an earthquake, the tri-axial accelerator of seismic instrumentation system shall compare the measured acceleration value and with preset value. If the acceleration value exceeds the preset value, the corresponding accelerator shall issue an earthquake trip reactor signal to diversity actuation system. Alter the diversity actuation system receives the trigger signal and executes the related logic, it will send the final signal to the reactor rod control system＇ s power supply cabinet for implementing earthquake automatic reactor trip function.