The Increasing of the Nuclear Fuel Usage and the Safety Efficiency of VVER-Type Reactors by Using Fossil-Fired Steam Superheating

Currently, nuclear power plants need to increase thermodynamic efficiency and improve safety in order to maintain competitiveness in the electricity production market. The usage of fossil-fired steam superheating with reduced initial parameters of the primary and secondary circuits in the thermodynamic cycle of a nuclear power plant with a VVER-1200 reactor makes it possible to increase the energy efficiency and safety of nuclear power plants by increasing the nuclear fuel burnup, as well as the absence of the need to manufacture expensive high-pressure vessels for reactors. The paper presents the substantiation of the effectiveness of the use of fossil-fired steam superheating in the thermodynamic cycle of a nuclear power plant with a VVER-1200 reactor for increasing the efficiency of the nuclear fuel usage, as well as the safety of the reactor plant as a whole.