SAFETY CONTROL SYSTEM FOR NUCLEAR POWER PLANT

The invention relates to computer engineering and can be used in systems for monitoring and controlling the safety of nuclear power plants (NPP). The system includes a plurality of identical safety channels; each channel includes stations for input/output of the signals of the process (SIO1-n) and stations for priority control of actuators (SPC1-m), which are connected to a main control centre (MCC) and to a standby control centre (SCC), a controller for automation of safety features (CA SF), and a safety feature input/output bus (SF IOB) for exchanging the data of the controller CA SF with the stations SIO and SPC, and is connected to other safety channels by means of cross-duplex fibre-optic communication. Furthermore, two mutually independent hardware/software packages form a subchannelA and a subchannel B for executing the function of a safety channel, each of which contains a controller CA SF of a subchannel thereof; and each of the input/output busses of each subchannel has a tree structure, the top roo