Coupled module of radioactive waste analysis for CANDU reactor based on the Monte Carlo method

When decommissioning nuclear power plants, it is necessary that various types of radioactive wastes are to be estimated and be analyzed accurately. The first decommissioning process of the commercial light water reactor (LWR) is expected to start soon in South Korea, however, lots of processes are still under development for CANada Deuterium Uranium (CANDU) reactor. Unlike the LWR type reactor, the CANDU has complicated and different shapes of components in the reactor, which makes it difficult to carry out activation analysis considering region-wise different irradiation histories. In this study, a coupled module has been developed with Monte Carlo full core analysis and the region-wise depletion analysis by equipped automatic input generation. Furthermore, the levels of radioactive wastes are determined for transportation including estimation of cask contents based on the coupled module results.