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Radioactive waste management.

The radioactive elements (radionuclides) cannot be destroyed by any known chemical or mechanical process. Their ultimate destruction is through radio-decay to stable isotopes or by nuclear transmutation by bombardment with atomic particles. Consequently, radioactive waste management consists of controlling and reducing the radioactive releases to tolerable levels, removing from effluents and wastes those radionuclides of concern, concentrating them into a form which can be stored or disposed of in such a manner that they do not later appear in hazardous concentrations in the biosphere.