Implementation of graded approach in ensuring safety in management of emergency and legacy radioactive waste in Ukraine.

Ukraine has accumulated large amounts of Chernobyl-origin emergency radioactive waste stored in the Chernobyl Exclusion Zone and beyond, as well as legacy radioactive waste in the Radon-type facilities and military sites of the former Soviet Union. Management of such radioactive waste requires the application of a graded approach, in particular, ranking of sites with such radioactive waste by the degree of hazard. Based on the results of ranking, a decision is made on one of the three options: urgent removal of radioactive waste from the site, delayed removal of radioactive waste from the site, and absence of necessity to remove radioactive waste from the site.