In liquid water as a dielectric with a wide band gap, the Fermi level is a linear identifier of the redox potential of the aqueous medium, which serves as a measure of the loss of electrons on oxidation of water and their addition to it on reduction. A negative potential is required to suppress corrosion activity in the primary loop of VVER, which is achieved with a slight shift in the component composition of water H2O1–z to the hypostoichiometric zone 0 < z < 25·10–13 with the formation of hydroxonium radicals H3O as the strongest reducing agents. However, on low-temperature monitoring of such a potential in the VVER primary loop, significant distortions of its readings are possible.
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Translated from Atomnaya Énergiya, Vol. 132, No. 4, pp. 191–195, April, 2022.
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Shimkevich, A.L. Possible Distortions of Low-Temperature Monitoring of the Water Redox Potential in VVER Primary Loop. At Energy 132, 197–201 (2022). https://doi.org/10.1007/s10512-023-00927-2
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DOI: https://doi.org/10.1007/s10512-023-00927-2