| 摘要 |
<p>A nuclear power plant control system (3) is provided with detection units (30a-30d) which detect phenomena that occur in a nuclear power plant for each of four systems, a trip control device (20) which starts, in the case where a signal that indicates an occurrence of the phenomenon is input from at least a predetermined number of signal lines out of signal lines of two systems, processing corresponding to the phenomenon, and majority circuits (50a and 50b) which are provided for each signal line of the two systems and each output, in the case where the phenomenon is detected by N or more detection units out of the detection units (30a-30d), a signal that indicates an occurrence of the phenomenon to a corresponding signal line.</p> |
