ACCEPTANCE TESTING OF THE IN-CORE MONITORING SYSTEM FOR RIVNE NPP WAS CARRIED OUT

In December 2023, acceptance tests of the upper level of the modified in-core monitoring system of power unit No. 4 of the Rivne NPP (UL SVRK-M2) were successfully carried out at the of SRPA "Impulse" test site.

UL SVRK-M2 performs diversification of the calculation of the neutron-physical parameters of the core using two software systems: "Beacon-TSM" (Westinghouse) and the national calculation complex "ImCore" (SRPA ”Impulse”). Software that implements the calculation of the thermohydraulic parameters of the reactor plant and all other functions, and equipment of the upper level - SRPA ”Impulse” production.

UL SVRK-M2 provides:

• Control of mixed loads with fuel of any suppliers and fuel assemblies with different fuel column heights;
• Fuel profiling in both axial and radial terms;
• Possibility of direct control of linear energy release at the level of fuel elements;
• Electronic album of neutron-physical characteristics based on predictive functions of the system;
• Information support for the operator in power maneuvering modes.

Based on the results of the work, the acceptance committee, consisting of representatives of the RNPP, State Nuclear Regulatory Inspectorate of Ukraine and SRPA “Impulse”, concluded that UL SVRK-M2 fully complies with the requirements of technical specifications, norms, rules and standards for nuclear and radiation safety, including the requirement for cyber protection, and is ready for delivery to the Rivne NPP.