There has recently been growing concern over the dumping of high-and medium-level solid radioactive wastes in the Kara Sea by the former Soviet Union.
The largest amounts of radioactive wastes were dumped primarily as nuclear reactors containing spent nuclear fuel.
The present radionuclide inventory in dumped nuclear reactors is estimated at 4.7 PBq.
Compartmental and hydrodynamic models have been developed and applied to describe the possible dispersal of radioactive contaminants and to predict the long-term radiological impact on global, regional and local scales.
The collective committed effective dose to the world population based on the marine food ingestion pathway has been calculated as 2.2 man Sv.
Modelling results suggest that only radiological effects on a local scale may be of importance.
The global radiological impact of the disposals in the Kara Sea will be smaller than from other anthropogenic sources of radioactivity.
Mots-clés Pascal : Mer de Kara, Océan Arctique, Pollution eau, Pollution radioactive, Décharge déchet, Déchet moyennement radioactif, Déchet fortement radioactif, Modèle hydrodynamique, Modèle compartimental, Impact environnement, Phénomène transport, Dispersion, Devenir polluant, Sédiment marin, Teneur
Mots-clés Pascal anglais : Kara Sea, Arctic Ocean, Water pollution, Radioactive pollution, Waste dumping, Intermediate-level radioactive wastes, High level radioactive waste, Hydrodynamic model, Compartmental model, Environment impact, Transport process, Dispersion, Pollutant behavior, Marine sediments, Content
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0223946
Code Inist : 001D16A04D. Création : 11/09/1998.