Activity Evaluation Methodology for the Disposed Medical Linear Accelerators

For the medical linear accelerators (linac) that utilize more than 10 MV of photon energy, components inside linac head become radioactivate during 10–15-year operating cycle. Prior to disposal, radioactive waste must be evaluated for activity, and same procedure should followed linacs. In Republic Korea, regulation methodology radioactivity evaluation is not established yet. this study, we employed gamma spectroscopy a survey meter evaluating components. The Siemens considered in study were classified after decommissioning, dose rates measured up 5 cm distance from component surfaces by using meter. Radionuclides detected an situ HPGe detector. Based on type radionuclides rate, estimated We studied feasibility disposing