Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) (방사성폐기물학회지)

Korean Radioactive Waste Society (한국방사성폐기물학회)
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Transport Risk Assessment for On-Road/Sea Transport of Decommissioning Waste of Kori Unit 1

  • Woo Yong Kim (Korea Nuclear Engineering & Service) ;
  • Hyun Woo Song (Korea Nuclear Engineering & Service) ;
  • Jisoo Yoon (Central Research Institute, Korea Hydro & Nuclear Power) ;
  • Moon Oh Kim (Korea Nuclear Engineering & Service)
  • Received : 2022.09.23
  • Accepted : 2022.12.22
  • Published : 2023.06.30
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Abstract

Compared to operational wastes, nuclear power plant (NPP) decommissioning wastes are generated in larger quantities within a short time and include diverse types with a wider range of radiation characteristics. Currently used 200 L drums and IP-2 type transport containers are inefficient and restrictive in packaging and transporting decommissioning wastes. Therefore, new packaging and transport containers with greater size, loading weight, and shielding performance have been developed. When transporting radioactive materials, radiological safety should be assessed by reflecting parameters such as the type and quantity of the package, transport route, and transport environment. Thus far, safety evaluations of radioactive waste transport have mainly targeted operational wastes, that have less radioactivity and a smaller amount per transport than decommissioning wastes. Therefore, in this study, the possible radiation effects during the transport from NPP to disposal facilities were evaluated to reflect the characteristics of the newly developed containers and decommissioning wastes. According to the evaluation results, the exposure dose to transport workers, handling workers, and the public was lower than the domestic regulatory limit. In addition, all exposure dose results were confirmed, through sensitivity analysis, to satisfy the evaluation criteria even under circumstances when radioactive materials were released 100% from the container.

Keywords

Acknowledgement

This research was supported by the Korea Institute of Energy Technology Evaluation and planning (KETEP), granted financial resources from the Ministry of Trade, Industry & Energy, the Republic of Korea (No. 20211510100040).

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