Abstract
This paper describes the development of a discrete event simulation model using the FlexSim software to support planning for soil remediation at Korean nuclear power plants that are undergoing decommissioning. Soil remediation may be required if site characterization shows that there has been radioactive contamination of soil from plant operations or the decommissioning process. The simulation model was developed using a dry soil separation and soil washing process. Preliminary soil data from the Kori 1 nuclear power plant was used in the model. It was shown that a batch process such as soil washing can be effectively modeled as a discrete event process. Efficient allocation of resources and efficient waste management including volume and classification reduction can be achieved by use of the model for planning the soil remediation process. Cost will be an important criterion in the choice of suitable technologies for soil remediation but is not included in this conceptual model.
Highlights
This paper describes the development of a conceptual simulation model that can be used for logistics planning for site remediation at Korean nuclear power plants and the Kori 1 reactor site
Operation of a nuclear power plant may lead the release of radioactive materials to the soil and groundwater at the site which could migrate to the surrounding environment
Electric Power Research Institute (EPRI) found that contamination below structures was difficult to identify and characterize until after the structures are removed in the decommissioning phase
Summary
This paper describes the development of a conceptual simulation model that can be used for logistics planning for site remediation at Korean nuclear power plants and the Kori 1 reactor site. A FlexSim discrete event simulation model of the site soil remediation and waste management process was developed to support optimization of performance, resources, and time and to minimize nuclear waste. Kori Unit 1, the oldest nuclear power plant (NPP) in Korea, was permanently shut down in June 2017. Operation of a nuclear power plant may lead the release of radioactive materials to the soil and groundwater at the site which could migrate to the surrounding environment. Small radioactive releases may not be discovered until the NPP undergoes decommissioning and must be remediated to prevent migration of radioactive materials [1]
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