방사선산업학회지 (Journal of Radiation Industry)

한국방사선산업학회 (Korean Society of Radiation Industry)
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RESRAD-RECYCLE 전산코드를 활용한 금속폐기물 내 우라늄 자체처분 허용농도 예비 평가

Preliminary Evaluation of Clearance Level of Uranium in Metal Waste Using the RESRAD-RECYCLE Code

  • 이선우 (경희대학교 원자력공학과) ;
  • 홍정환 (한전원자력연료) ;
  • 박정석 (한전원자력연료) ;
  • 김광표 (경희대학교 원자력공학과)
  • SunWoo Lee (Department of Nuclear Engineering, Kyung Hee University) ;
  • JungHwan Hong (KEPCO Nuclear Fuel) ;
  • JungSuk Park (KEPCO Nuclear Fuel) ;
  • KwangPyo Kim (Department of Nuclear Engineering, Kyung Hee University)
  • 투고 : 2023.12.06
  • 심사 : 2023.12.20
  • 발행 : 2023.12.31
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초록

The clearance level by nuclide is announced by the Nuclear Safety and Security Commission. However, the clearance level of uranium existing in nature has not been announced, and research is needed. Therefore, the purpose of this study was to evaluate the clearance level of uranium nuclides appropriate to domestic conditions preliminary. For this purpose, this study selected major processes for recycling metal wastes and analyzed the exposure scenarios and major input factors by investigating the characteristics of each process. Then, the radiation dose to the general public and workers was evaluated according to the selected scenarios. Finally, the results of the radiation dose per unit radioactivity for each scenario were analyzed to derive the clearance level of uranium in metal waste. The results of the radiation dose assessment for both the general public and workers per unit radioactivity of uranium isotopes were shown to meet the allowable dose (individual dose of 10 µSv y-1 and collective dose of 1 Man-Sv y-1) regulated by the Nuclear Safety and Security Commission. The most conservative scenarios for volumetric and surface contamination were evaluated for the handling of the slag generated after the melting of the metal waste and the direct reuse of the contaminated metal waste into the building without further disposal. For each of these scenarios, the radioactivity concentration by uranium isotope was calculated, and the clearance level of uranium in metal waste was calculated through the radioactivity ratio by enrichment. The results of this study can be used as a basic data for defining the clearance level of uranium-contaminated radioactive waste.

키워드

참고문헌

  1. Nuclear Safety and Security Commission. Nuclear Safety Act.
  2. IAEA. 1996. International Basic Safety Standards for Protection against Ionizing Radiation and for the Safety of Radiation Sources, Safety Series No 115.
  3. IAEA. 2023. Application of the Concepts of clearance. Safety Standards. GSG-18.
  4. Nuclear Safety and Security Commission. 2023. NSSC Notice No. 2023-7. Regulations on radioactive waste classification and clearance standards.
  5. IAEA. 1992. Application of exemption principles to the recycle and reuse of Material from Nuclear Facilities, Safety Series No 111-p-1.1.
  6. NUREG-1640. 1999. Radiological Assessment f.or Clearance of Equipment and Material from Nuclear Facilities. Vol. 1 & 2.
  7. NUREG-1640. 2003. Radiological Assessment for Clearance of Equipment and Material from Nuclear Facilities. Vol. 1.
  8. KINS. 2022. Safety Evaluation of clearance of Radioactive Waste. KINS/RG-N12.08.
  9. Hong YJ, Jang WH, Kim JJ and Lee JW. 2021. Case Study on Radioactive Waste Disposal for clearance. J. Radiat. Ind. 15(1):85-91. https://doi.org/10.23042/radin.2021.15.1.85.
  10. Choi YW, Ko JH, Lee DK, Hwang YH, Lee IH and Hong SB. 2020. Safety Evaluation of Clearance of Radioactive Metal Waste After Decommissioning of NPP. JNFCW 18(2):291-303. https://doi.org/10.7733/jnfcwt.2020.18.2(E).291.
  11. Seol JG, Ryu JB, Cho SJ, Yoo SH, Song JH, Baek H, Kim SH, Park SS and Park HK. 2007. Residual Radioactivity Investigation & Radiological Assessments for Self-disposal of Concrete Waste in Nuclear Fuel Processing Facility. JNFCWT 5(2):91-101. https://www.kci.go.kr/kciportal/ci/sereArticleSearch/ciSereArtiOrteView.kci?sereArticleSearchBean.artiId=ART001065381. 1065381
  12. Lee MH. 2020. Study on clearance of waste activated carbon using RESRAD. Master's Thesis, Chosun University.
  13. Song JS, Kim DM and Lee SH. 2016. A Study on the Application of Standards for Clearance of Metal Waste Generated During the Decommissioning of NPP by Using the RESRADRECYCLE. JNFCWT 14(4):305-320. https://doi.org/10.7733/jnfcwt.2016.14.4.305.
  14. KAERI. 2011. Study to assess the safety of recycling radioactive metal waste. KAERI/RR-3275.
  15. Hong SB, Lee BJ and Jung US. 2003. Proceeding of the Korean Radioactive Waste Society Vol. 1, No. 2.
  16. ANL. 2020. RESRAD-RECYCLE Manual. ANL/EAD-3.
  17. KNF. 2020. Completion report of recycling process investigation and exposure scenario development service for metal waste clearance.
  18. KOPEC. 2000. Dose Assessment Report for clearance of Metals of KNF.
  19. KNF. 2009. Dose Assessment Report for clearance of Metals.
  20. KNF. 2013. Dose Assessment Report for clearance of Metals.
  21. KINS. 2002. Developing radioactive waste de-regulation requirements. KINS/RR-144.
  22. KAERI. 2004. State of the Technology for Melting and Recycling Radioactive Metal Waste. KAERI/AR-716/2004.