The erosion–corrosion interaction of the metal of a working surface of a process loop with one- and two-phase flow of the coolant is considered from the standpoint of corrosion and mass transfer in conjunction with the water-chemistry regime. A classification of the mechanisms of metal thinning under the influence of the flow of the working medium is formulated taking into account the kinetics of their development in time, the main factors (erosion–corrosion parameters) are determined, and the computational codes used for predicting the rate of erosion–corrosion are noted. The features of the erosion–corrosion interaction of one- and two-phase flow with the metal in the working loop of a nuclear power plant are considered. The results of computational modeling of the erosion–corrosion of metal in a two-phase flow are presented. A kinetic-migration approach to determining the zones of the greatest local erosion–corrosion thinning of pipeline elements and equipment of NPP power units is proposed. It is shown that there is great utility in taking into account the effects of the erosion–corrosion interaction of one- and two-phase flows with metal in the R&D work on NPP power units.
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Translated from Atomnaya Énergiya, Vol. 130, No. 5, pp. 262–269, May, 2021.
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Tomarov, G.V., Shipkov, A.A. Influence of Mass Transfer and Physicochemical Processes in the Working Fluid on Erosion–Corrosion of Equipment and Pipelines in Nuclear Power Plants. At Energy 130, 278–284 (2021). https://doi.org/10.1007/s10512-021-00809-5
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DOI: https://doi.org/10.1007/s10512-021-00809-5