Development of light-water technology based on VVER-SCP power reactors

The article formulates the system requirements for VVER-SCP reactors based on the analysis of scenarios for the development of Russian Nuclear Energy. A brief description of the VVER-SCP reactor, features of its physics and design, features of the cluster control and protection system of the reactor, and core fuel are given. The indicators of the reactor's nuclear fuel cycle, indicators of breeding of secondary nuclear fuel (fissile isotopes of plutonium), the main coefficients and effects of reactivity are presented. A brief description of the nuclear power installation with this reactor is given, the features of the reactor and steam turbine systems of the nuclear power installation are presented. The comparison of specific indicators of nuclear power units based on light-water reactors AES-2006 and AP-1000 with specific indicators of the VVER-SCP power unit is also given. The article presents the main provisions of the concept of the multi-purpose low-power test research reactor MTIR-SCP, as the main experimental research base for testing VVER-SCP technologies. The main characteristics and features of the neutron physics of the MTIR-SCP are given, the features of its operation and the possibilities for conducting reactor experiments and irradiations are presented. Brief results of VVER-SCP developments in the period 2019-2023 are also presented. A list of necessary R&D in support of the MTIR-SCP and VVER-SCP projects and a roadmap for the development of the VVER-SCP direction before the creation of a pilot demonstration power unit by 2050 is provided.