Functions of SVRK-M:

• cyclically acquiring data from in-core and technological sensors of RF;
• correcting lag of direct charge sensor signals;
• calculating neutron-physical and thermohydraulic parameters of a core and an RF’s primary circuit;
• monitoring current parameters and generating signals on deviations from technological setpoints;
• displaying parameters of a core and RF state in the form of videograms, protocols, and diagrams;
• keeping an archive of measured and calculated parameters, as well as non-continuous events and indications of deviation from limits of setpoints;
• quickly estimating parameters of energy-release distribution along the height of a core and comparing them with the setpoints that depend on a fuel burn-up degree;
• transferring a preliminary protection signal to a control and protection system when limits of setpoints of local energy-release and/or critical power ratio are exceeded;
• forecasting energy-release distribution in a current continuous way;
• forecasting energy-release distribution on operator’s demand with given control impacts;
• monitoring quality of quick restore of energy-release field.

Composition of SVRK-M:

• the lower level is implemented based on MSKU-4 failsafe industrial controllers;
• the upper level is implemented based on PS5140 industrial workstations with redundant Ethernet switches for connection to a lower level.

System advantages:

• possibility to monitor neutron-physical and thermohydraulic parameters of a core in stationary and transient modes, including modes of unit operation at increased power;
• possibility to monitor cores with TVS-WR fuel manufactured by Westinghouse, including cores with "mixed" loads (modification of SVRK-M with integrated software and hardware of a "BEACON" physical calculation subsystem is operated at Zaporizhzhya NPP);
• informational support for an operator to operate NPP in power maneuvering modes;
• possibility of implementation of new fuel cycles;
• high degree of approbation of technical solutions due to a long-term experience of operation at NPP units.

Safety class – 3.
Safety category – В.

Implementation facilities:

• Zaporizhzhya NPP, units 1-6
• Khmelnitsky NPP, units 1, 2
• Rivne NPP, units 1-4
• South-Ukraine NPP, units 1, 2