Safety assessment of liquid radioactive wastes buried for a long time in deep repositories |
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Authors: | I. M. Kosareva M. K. Savushkina S. A. Kabakchi S. V. Korotkevich V. M. Kudryavtsev |
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Affiliation: | (1) A. N. Frumkin Institute for Physical Chemistry and Ecology, Russian Academy of Sciences, Russia;(2) L. Ya. Karpov Institute for Scientific Research in Physical Chemistry, Russia;(3) Russian Atomic Energy Agency, Russia |
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Abstract: | The concepts of specific and absolute toxicity permit distinguishing in radioactive wastes belonging to different categories the particular components that present the greatest ecological danger at different stages of their disposal in repositories. It is shown that transuranium elements determine the toxicity parameter of high-and medium-level wastes only 350–400 years after initial disposal. At the present stage of operation of deep repositories, the behavior of the long-lived fission products of 90Sr and 137Cs is most important. For low-level wastes, the chemical and not the radioactive component is most dangerous. __________ Translated from Atomnaya énergiya,Vol. 100, No. 2, pp. 86–92, February, 2006. |
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