O. Yu. Tkacheva, V. B. Remisov, P. V. Kozlov, E. A. Belanova, N. V. Vlasova, Yu. P. Zaikov
ABSTRACT
The electrical conductivity of the borosilicate and aluminophosphate glasses containing simulated high-level waste from the reprocessing of spent nuclear fuel VVER‑440 has been studied by the impedance spectroscopy method. It was found that the electrical conductivity of the aluminophosphate and borosilicate glasses was determined mainly by the sodium oxide concentration and significantly changes with temperature. An empirical equation of the electrical conductivity dependence on the sodium oxide content and temperature is obtained for the borosilicate glasses. The effect of the HLW simulators on the electrical conductivity of molten glasses was insignificant in the concentration range being studied.
KEY WORDS
spent nuclear fuel, high-level waste, aluminophosphate glass, borosilicate glass, melt, electrical conductivity