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

Korean Radioactive Waste Society (한국방사성폐기물학회)
권호 표지
DOI QR코드

DOI QR Code

Preliminary Evaluation of Radiological Impact for Domestic On-road Transportation of Decommissioning Waste of Kori Unit 1

  • Received : 2020.08.18
  • Accepted : 2020.09.21
  • Published : 2020.12.30
Download PDF
⟨ Previous Next ⟩

Abstract

Currently, radioactive waste for disposal has been restricted to low and intermediate level radioactive waste generated during operation of nuclear power plants, and these radioactive wastes were managed and disposed of the 200 L and 320 L of steel drums. However, it is expected that it will be difficult to manage a large amount of decommissioning waste of the Kori unit 1 with the existing drums and transportation containers. Accordingly, the KORAD is currently developing various and large-sized containers for packaging, transportation, and disposal of decommissioning waste. In this study, the radiation exposure doses of workers and the public were evaluated using RADTRAN computational analysis code in case of the domestic on-road transportation of new package and transportation containers under development. The results were compared with the domestic annual dose limit. In addition, the sensitivity of the expected exposure dose according to the change in the leakage rate of radionuclides in the waste packaging was evaluated. As a result of the evaluation, it was confirmed that the exposure dose under normal and accident condition was less than the domestic annual exposure dose limit. However, in the case of a number of loading and unloading operations, working systems should be prepared to reduce the exposure of workers.

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. 20181510300870).

References

  1. Ruth F. Weiner, Daniel Hinojosa, Terence J. Heames, Cathy Ottinger Farnum, and Elena A. Kalinina. Radtran 6/Radcat 6 User Guide, Sandia National Laboratories Report, SAND2013-8095 (2014).
  2. S. Bushart, B. Couture, J. Fan, R. Haight, and C. Melin. Connecticut Yankee Decommissioning Experience Report, Electric Power Research Institute, EPRI TR 1013511 (2006).
  3. Ministry of Land, Infrastructure, and Transport, Vehicle Restriction Regulations, Instructions No. 1214 (2019).
  4. Nuclear Safety and Security Commission, Regulations on the packaging and transport of radioactive materials, etc., Notice No. 2019-7 (2019).
  5. Nuclear Safety and Security Commission, Regulations on Radioactive Waste Classification and Clearance Standards, Notice No. 2020-6 (2020).
  6. Los Alamos National Laboratory, RSICC Computer Code Collection MCNP6.1/MCNP5, MCNPX,97-99, CCC-810 (2013).
  7. International Commission on Radiological Protection, ICRP Publication 74 : Conversion Coefficients for Use in Radiological Protection against External Radiation, 1st ed., ICRP, London (1996).
  8. Ministry of the Interior and Safety, "2019 Statistics City yearbook of Korea" (2014).
  9. Statistics Korea, "Korean Statistical Information Service (KOSIS)", Available from: http://kosis.kr/index/index.do.
  10. M.H. Seo, S.W. Hong, and J.B. Park, "Radiological Impact Assessment for the Domestic On-road Transportation of Radioactive Isotope Wastes", J. Nuel. Fuel Cycle Waste Technol., 14(3), 279-287 (2020).
  11. U.S. Nuclear Regulatory Commission, Office of Nuclear Material Safety and Safeguard, Update of 10 CFR Part 61, Impact Analysis Methodology, Vol.1, 100-101, NUREG/CR-4370 (1985).
  12. J.H. Park, W.S. Yang, N.K. Chae, M.H. Lee, and S.Y. Choi, "Internal dose Assessment of worker by radioactive Aerosol Generated During Mechanical Cutting of Radioactive Concrete", J. Nuel. Fuel Cycle Waste Technol., 18(2), 157-167 (2020). https://doi.org/10.7733/jnfcwt.2020.18.2.157