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

Korean Radioactive Waste Society (한국방사성폐기물학회)
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Evaluation on Radioactive Waste Disposal Amount of Kori Unit 1 Reactor Vessel Considering Cutting and Packaging Methods

고리 1호기 원자로 압력용기 절단과 포장 방법에 따른 처분 물량 산정

  • 최유정 (한전국제원자력대학원대학교) ;
  • 이성철 (한전국제원자력대학원대학교) ;
  • 김창락 (한전국제원자력대학원대학교)
  • Received : 2015.08.07
  • Accepted : 2016.01.04
  • Published : 2016.06.30
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Abstract

Decommissioning of nuclear power plants has become a big issue in South Korea as some of the nuclear power plants in operation including Kori unit 1 and Wolsung unit 1 are getting old. Recently, Wolsung unit 1 received permission to continue operation while Kori unit 1 will shut down permanently in June 2017. With the consideration of segmentation method and disposal containers, this paper evaluated final disposal amount of radioactive waste generated from decommissioning of the reactor pressure vessel in Kori unit 1 which will be decommissioned as the first in South Korea. The evaluation results indicated that the final disposal amount from the top and bottom heads of the reactor pressure vessel with hemisphere shape decreased as they were cut in smaller more effectively than the cylindrical part of the reactor pressure vessel. It was also investigated that 200 L and 320 L radioactive waste disposal containers used in Kyung-Ju disposal facility had low payload efficiency because of loading weight limitation.

최근 국내에서는 월성 1호기 및 고리 1호기를 포함하여 운영 중인 원자력발전소가 노후화함에 따라 원전 해체에 대한 관심이 많이 증대되고 있다. 이와 관련하여 월성 1호기의 계속운전이 최근 결정되었으며, 고리 1호기의 경우 2017년 6월 영구정지하기로 결정되었다. 이에 본 논문에서는 상업용 원자로로서는 국내 최초로 해체가 예정된 고리 1호기에 대해, 원자로 압력용기 자체의 해체로 인해 발생하는 방사성폐기물 최종 처분량을 원자로 압력용기 절단 방법 및 방사성폐기물 처분용기를 고려하여 산정하였다. 처분용기를 고려한 방사성폐기물 처분량을 산정한 결과 원자로 압력용기 몸통 부위보다는 반구 형태의 헤드 부분을 작게 절단할수록 최종 처분량이 감소하는 것으로 예측되었다. 또한 경주 방폐장의 200 L 및 320 L 드럼 처분용 처분용기의 경우 무게 제한으로 인해 적재효율이 좋지 못한 것으로 나타났다.

Keywords

References

  1. J.S. Song, Y.G. Kim, and S.H. Lee, "A Study on Radioactive Source-term Assessment Method for Decommissioning PWR Primary System" JNFCWT, 2(2), 153-164 (2014).
  2. B.Y. Min, J.W. Park, W.K. Choi, and K.W. Lee, "Separation of Radionuclide from Dismantled Concrete Waste", J. of the Korean Radioactive Waste Society, 7(2), 79-86 (2009).
  3. K.J. Lee, H.S. Kim, S.W. Shin, M.J. Song, and Y.K. Lee, "Estimation of Radioactive Inventory for a Major Component of Reactor in Decommissioning", J. of the Korean Radioactive Waste Society, 2(1), 69-75 (2004).
  4. OECD, "Decommissioning Nuclear Power Plants: Policies, Strategies, and Costs", Nuclear Energy Agency., Paris (2003).
  5. G.D. Lee and J.S. Park, The Study of Establishing IES Baseline Supply Plan, Korea Energy Economics Institute Report, 2005-E-NM01-P-01 (2005).
  6. J.B. Park, H.R. Jung, E.Y. Lee, C.L. Kim, G.Y. Kim, K.S. Kim, Y.K. Koh, K.W. Park, J.H. Cheong, C.W. Jeong, J.S. Choi, and K.D. Kim, "Wolsong Low- and Intermediate-Level Radioactive Waste Disposal Center: Progressand Challenges." NET., 41(4), 477-492 (2009). https://doi.org/10.5516/NET.2009.41.4.477
  7. OECD. The Management of Large Components from Decommissioning to Storage and Disposal, The Task Group on Large Components of the NEA Working Party on Decommissioning and Dismantling Report, NEA/RWM/R(2012)8, (2012).
  8. G. Gestermann, "MOSAIK 20 Years of Experience with a Cask System for Transportation, Conditioning and Storage of Rdioactive Waste." 14th Int. Symp. on the Packaging and Transportation of Radioactive Materials, Paper No. 067, IAEA, Berlin (2004).
  9. I.J. Kim, "Evaluation of Optimized dismantling Techniques for Reactor Pressure Vessel Segmentation in KSNP", Master degree dissertation, Kepco International Nuclear Graduate School (2013).

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