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A simplified model to evaluate the radiological impact of an accident with a nuclear reactor submerged at the sea

Published online by Cambridge University Press:  06 June 2009

J. Barescut ,
A. S. Paschoa ,
C. A. de Moura  and
V. B. de Castro
A. S. Paschoa
Affiliation:
Laboratório de Radioecologia e Mudanças Globais (LARAMG) Instituto de Radioproteção e Dosimetria (IRD),Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n°, Recreio dos Bandeirantes, RJ 22780-160, Rio de Janeiro, Brazil
C. A. de Moura
Affiliation:
Instituto de Matemática e Estatística (IME), Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524. Maracanã, RJ 20550-013, Rio de Janeiro, Brazil
V. B. de Castro
Affiliation:
Instituto de Matemática e Estatística (IME), Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524. Maracanã, RJ 20550-013, Rio de Janeiro, Brazil
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Abstract

There are various scenarios dealing with releases of radionuclides in a water body, for example, accidents in nuclear power plants located in coastal areas, on margins of rivers or lakes. Meager attention has been given, however, to potential accidents with nuclear reactors submerged at sea. The latter type of accidents may occur with partial or total loss of the nuclear reactor core to the adjacent waters. In addition to initial instantaneous releases, one may estimate delayed sources based on rates of leaching or dissolving solid materials which are part of the core. Transport equations were used to estimate concentrations of radionuclides in water. Time dependent functions of concentrations of radionuclides in the aquatic food chain reflect the absorption and elimination processes in the flora and fauna. However, to avoid the multi-parametric complexity which can be inserted in these processes, the model takes into proper consideration in a simplified way the transfer of radionuclides through trophic levels. The model avoids the need to analyze step-by-step the details of transfer factors used to determine radionuclide accumulation in fish, crustaceans, mollusks, and algae. This simplified model may help authorities in the case of an accident with a nuclear reactor submerged at sea.

Type
Research Article
Information
Radioprotection , Volume 44 , Issue 5: ECORAD 2008 - Radioecology and Environmental Radioactivity , 2009 , pp. 963 - 970
Copyright
© EDP Sciences, 2009

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References

Salbu, B., A.I. Nikitin, P. Strand, G.C. Christensen, V.B. Chumichev, B. Lind, H. Fjelldal, T.D.S. Bergan, A.L. Rudjord, M. Sickel, N.K. Valetova and L. Foyn, Radioactive contamination from dumped nuclear waste in the Kara Sea – results from the joint Russian-Norwegian expeditions in 1992–1994, The Science of the Total Environment, 202 (1997) pp. 185–198.
Warden J.M., N.M. Lynn, M. Mount, Y. Sivintsev, S.J. Timms, E. Yefimov, K. Gussgard, R.S. Dyer and K.L. Sjoeblom, Potential radionuclide release rates from marine reactors dumped in the Kara Sea, The Science of the Total Environment, 202 (1997) pp. 225–236.
WASH 1400, Reactor Safety Study, United States Regulatory Commission, October 1975.
Okubo, A., Deep Sea Res., 18 (1971).
Miyake, Y. and Saruhashi K. (1958) J. Mar. Res., 17, pp. 383.
Paschoa, A.S. and Amaral, E.C.S. (1991) Transfer and Concentration Factors in Laboratory and Environmental Conditions, A.S. In High Levels of Natural Radiation, Ramsar, M. Sohrahi, J.U. Ahmed and S.A. Durani, Eds. (International Atomic Energy Agency, Vienna, 1991) pp. 125–133.
Nelson, D.J. (1967) “Cesium, 137Cs, and potassium concentrated in White Crappie and other Clinch River fish,” in Second National Symposium on Radioecology (Nelson, D.J. and Evans, F.C., eds.) Report No. Conf-670503 (National Technical Information Service, Springfield, Virginia) 240.
National Council on Radiation Protection and Measurements, NCRP (1984) Radiological Assessment: Predicting the Transport, Bioaccumulation, and Uptake by Man of Radionuclides Released to the Environment, NCRP Report No. 76, 300 pp.
Woodhead, D.S. (1973) Levels of radioactivity in the marine environment and the dose commitment to marine organisms, International Sympsoium on the Radioactive Contamination of the Marine Environment, Seattle, 10–14 July 1972 (International Atomic Energy Agency, Vienna, 1973 – IAEA-SM-158/31) pp. 499–525.
Paschoa, A.S., Baptista, G.B., Wrenn, M.E. and Eisenbud E. (1981) Dosimetry of Natural and Man-Made Alpha Emitters in Plankton, International Symposium on the Impacts of Radionuclide Releases into the Marine Environment, Vienna, 6–10 October 1980 (International Atomic Energy Agency, 1981 – IAEA-SM-248/140) pp. 695–716.