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taminated with radioactive substances, deep underground collector layers in the Teche-Brodskaya structure (1,000-1,500 m deep) may be used. This structure is located very close to the enterprise and lies partially within the boundaries of its protected sanitary zone.

According to the results of geological prospecting work done in 1960-1965, the Teche-Brodskaya structure was deemed to be unsuitable for the burial of liquid wastes. However, an analysis in recent years of the geological conditions and results of experimental work, taking into account the results of studies of existing liquid radioactive waste storage sites at the Mining-Chemical Complex (Krasnoyarsk Krai), the Siberian Chemical Complex (Tomsk Oblast), and the Scientific Research Institute of Nuclear Reactors (Ulyanovsk Oblast), indicated that the burial of liquid radioactive wastes in the collector layer of the Teche-Brodskaya structure was entirely feasible.

To reduce the volume of water that would be transferred into storage, reverse osmosis desalination units (like the ENERGO-70,-45, for example) and sorption units to extract radionuclides could be used. If this is done, the salt solutions from the reverse osmosis units and the regenerates from the sorption units, which contain radionuclides, would be sent to storage.

To develop the design for the deep repository (storage site) for radioactive water pumped out during rehabilitation of near-surface underground layers, geophysical studies (seismological prospecting) must be carried out to select locations for the drilling of boreholes and deep (up to 2,000 m) exploratory-operational wells in the Argayash Fault zone, very close to reservoirs 10 and 11 of the Mayak enterprise. Studies of the boreholes must also be conducted. If the results are positive, the collector layer between the depths of 1,000 and 1,500 m could also be used to store the liquid radioactive wastes that are currently being transferred into open surface repositories as the reservoirs of the Techa Cascade are being decommissioned and treated.



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