Study on the regulation improvement of domestic cyclotron decommissioning through the questionnaires on the current cyclotron operation status

In the case of cyclotron, activation occurs in target structures and concrete by neutron resulting from nuclear reaction of target part. Because of activation, surrounding structures and concrete are categorized as radioactive waste. Cost of intermediate and low-level radioactive waste (ILLW) disposal in 2015(about 12 million won) have been increasing about three times compared with cost of ILLW disposal in 2009(about 4.5 million won). Through foreign cyclotron decommissioning practices, we verified the following. - To perform cyclotron decommissioning, the preparation of the cost estimation, identification of radionuclide, and identification of activation concentration is necessary. - According to categorization of radioactive waste, decommissioning waste disposal costs are changed.