Main results of the 2012 joint Norwegian-Russian expedition to the dumping sites of the nuclear submarine K-27 and solid radioactive waste in Stepovogo Fjord, Novaya Zemlya.

Autor: Gwynn JP; Norwegian Radiation Protection Authority, The Fram Centre, Tromsø, Norway. Electronic address: justin.gwynn@nrpa.no., Nikitin A; Research and Production Association 'Typhoon', Obninsk, Kaluga Region, Russia., Shershakov V; Research and Production Association 'Typhoon', Obninsk, Kaluga Region, Russia., Heldal HE; Institute of Marine Research, Bergen, Norway., Lind B; Norwegian Radiation Protection Authority, Østerås, Norway., Teien HC; CERAD CoE, Norwegian University of Life Sciences, Ås, Norway., Lind OC; CERAD CoE, Norwegian University of Life Sciences, Ås, Norway., Sidhu RS; Institute for Energy Technology, Kjeller, Norway., Bakke G; Institute of Marine Research, Bergen, Norway., Kazennov A; National Research Centre 'Kurchatov Institute', Moscow, Russia., Grishin D; Krylov State Research Centre, St. Petersburg, Russia., Fedorova A; Research and Production Association 'Typhoon', Obninsk, Kaluga Region, Russia., Blinova O; IAEA Environment Laboratories, Monaco., Sværen I; Institute of Marine Research, Bergen, Norway., Lee Liebig P; Institute of Marine Research, Bergen, Norway., Salbu B; CERAD CoE, Norwegian University of Life Sciences, Ås, Norway., Wendell CC; CERAD CoE, Norwegian University of Life Sciences, Ås, Norway., Strålberg E; Institute for Energy Technology, Kjeller, Norway., Valetova N; Research and Production Association 'Typhoon', Obninsk, Kaluga Region, Russia., Petrenko G; Research and Production Association 'Typhoon', Obninsk, Kaluga Region, Russia., Katrich I; Research and Production Association 'Typhoon', Obninsk, Kaluga Region, Russia., Logoyda I; State Scientific Centre 'Yuzhmorgeologiya', Gelendzhik, Russia., Osvath I; IAEA Environment Laboratories, Monaco., Levy I; IAEA Environment Laboratories, Monaco., Bartocci J; IAEA Environment Laboratories, Monaco., Pham MK; IAEA Environment Laboratories, Monaco., Sam A; IAEA Environment Laboratories, Monaco., Nies H; IAEA Environment Laboratories, Monaco., Rudjord AL; Norwegian Radiation Protection Authority, Østerås, Norway.
Jazyk: angličtina
Zdroj: Journal of environmental radioactivity [J Environ Radioact] 2016 Jan; Vol. 151 Pt 2, pp. 417-26. Date of Electronic Publication: 2015 Feb 21.
DOI: 10.1016/j.jenvrad.2015.02.003
Abstrakt: This paper reports the main results of the 2012 joint Norwegian-Russian expedition to investigate the radioecological situation of the Stepovogo Fjord on the eastern coast of Novaya Zemlya, where the nuclear submarine K-27 and solid radioactive waste was dumped. Based on in situ gamma measurements and the analysis of seawater and sediment samples taken around the submarine, there was no indication of any leakage from the reactor units of K-27. With regard to the radioecological status of Stepovogo Fjord, activity concentrations of all radionuclides in seawater, sediment and biota in 2012 were in general lower than reported from the previous investigations in the 1990s. However in 2012, the activity concentrations of (137)Cs and, to a lesser extent, those of (90)Sr remained elevated in bottom water from the inner part of Stepovogo Fjord compared with surface water and the outer part of Stepovogo Fjord. Deviations from expected (238)Pu/(239,240)Pu activity ratios and (240)Pu/(239)Pu atom ratios in some sediment samples from the inner part of Stepovogo Fjord observed in this study and earlier studies may indicate the possibility of leakages from dumped waste from different nuclear sources. Although the current environmental levels of radionuclides in Stepovogo Fjord are not of immediate cause for concern, further monitoring of the situation is warranted.
(Copyright © 2015 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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