Review

  • Journal of Nuclear Fuel Cycle and Waste Technology
  • Volume 16(3); 2018
  • Article

Journal of Nuclear Fuel Cycle and Waste Technology 2018;16(3):377-387. Published online: Sep, 30, 2018

PDF Citation

DOI : doi.org/10.7733/jnfcwt.2018.16.3.377

The Assessment and Reduction Plan of Radiation Exposure During Decommissioning of the Steam Generator in Kori Unit 1

  • Young Jik Son, Sang June Park, Jihyang Byon, Seokyoung Ahn
Abstract

Korea';s first commercial nuclear power plant, Kori Unit 1, was permanently shut down on June 18, 2017, after 40 years of successful operation. Kori Unit 1 plans to construct a waste treatment facility in the turbine building prior to commencement of dismantling in earnest. Various radioactive wastes are decontaminated, disassembled, cut and melted in the waste treatment facility and sent to the radioactive waste repository. The proportion of metal radioactive waste in dismantled waste is about 70%, of which large metal radioactive waste is mainly generated in the primary circuit and has high radioactivity, so radiation exposure must be managed during disassembly. In this study, the steam generators are selected as large metal radioactive waste, the exposure doses of the dismantling workers are calculated using RESRAD-RECYCLE code and the methods for reducing the exposure doses are suggested.

Keywords

Decontamination,Decommissioning,Steam generator,Exposure dose calculation