ABSTRACT
Later, a new technology for producing U F 6 by direct uranium oxides fluorination was developed under the guidance of A.S . Leontichuk.
Plant D - l was built in the Middle Ural, at the site of an Aviation Industry facility which was transferred to the PGU together with the residential settlement. The main equipment was to be installed in an unfinished block
whose area was about 50,000 m 2 . The site was conveniently located near a railway station, and there were two deep artificial lakes in the valley of the Neiva River. 1 6 There was an electric power transmission line nearby. A l l this was of great importance, because the newly created diffusion production process demanded much power. To produce I kg of uranium, 90%-enriched with the 2 3 5 U isotope, about 600 thousand K W • h of electric power was needed to drive electric motors of the compressors that pumped gas through porous membranes. This process required 175-220 kg of natural uranium [28]. Depending on the degree of 2 3 5 U extraction, the depleted U F 6 flow contained only 0.2-0.3%
2 3 5 U and was dumped. These dumps were condensed into the solid phase and delivered in special steel cylinders to storehouses for long-term storage and subsequent utilization.
