The radioecological conditions which developed on the territory over the long operating time of the object of the naval fleet in Guba Andreev are described. The results of an analysis of the sources of the real and potential danger and measures to prevent dangerous effects for the environment and the workers at the time remediation work is performed are discussed.The buildings and structures at a temporary disposal site for spent nuclear fuel and radioactive wastes in Guba Andreev (a former technical shore base of the northern fleet) were built at the end of the 1950s -beginning of the 1960s. Since spent fuel was added to the disposal site well before the fuel was shipped out, a large amount of fuel (~100 reactor cores from submarines) and radioactive wastes have accumulated at the site. For more than 40 yr of operation, the buildings and structures were not maintained, so that the states of many storage sites are unsafe [1]. Because the storage sites have become leaky, radioactive substances are flowing into the ground waters on the territory. Melted snow and rain water are gradually expanding the zone of contamination and are carrying radionuclides into the water of Guba Andreev.Determination of the Radioecological State of the Territory and Water Area. Periodic examinations of the buildings, structures, territory, and water area of Guba Andreev were conducted by the radiation safety services of the fleet and by specialists from the Research and Design Institute of Electrical Technology (ground survey) and the Russian Science Center Kurchatov Institute (water area). In 2002-2004, the free financial assistance provided by the Norwegian Radiation Protection Agency made it possible to construct cartograms of the radiation contamination ( Fig. 1) and perform hydrogeological and radiation-geological examinations of a large part of the territory of the disposal site. These measurements differed quantitatively and qualitatively from previous measurements: the number of measurements performed on soil samples was ten times larger than the number performed in preceding years, extensive field investigations made it possible to construct cartograms of the γ-ray field of the territory and water area and to identify the locations of sources of radioactive contamination and determine the radionuclide composition. On the basis of these results, a three-dimensional database containing information on the sources of radioactive contamination of the territory, buildings, and structures was constructed. This database can be used to estimate the real and potential sources of radioecological danger and to plan work on eliminating them.
No abstract
The concept of quality in the minds of Soviet and Russian people is inextricably linked with the concept of GOST. Requirements, imposed by the standard to quality of production, does not remain constant, but change in accordance with the level of development of science, technology and best practices. The article considers dynamics of changes of requirements of GOST 10632 "Chipboards. Technical conditions" to the quality of chipboards in the last 40 years. The author analyzes the wording of this standard, approved in 1977, 1989, 2007 and 2014. For specified period of time the labeling of the plates P-A and P-B to P1, P2 has changed, which is related to the harmonization with foreign standards. In the last edition of the GOST 2014 plates have no restrictions on size, so as to replace presses periodic action, which have specific dimensions of the heating plates of the press, presses of continuous extrusion come. The same situation is with the densities of boards, the manufacturer sets its value, but the strength of the plates shall conform to the requirements of the standard. Although, strength characteristics (ultimate strength in tension perpendicular to the plate and the ultimate strength in static bending) are reduced with each new edition of GOST. Tightening of the requirements has occurred to the sanitary and hygienic indicators of chipboards. The content of free formaldehyde has decreased from 10 to 4 mg per 100 g of absolutely dry plate. To obtain competitive boards of E0 emission class Russian chemical industry needs to develop a large amount of resins with low content of free formaldehyde.
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