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

Korean Radioactive Waste Society (한국방사성폐기물학회)
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Safety Assessment for the Landfill Disposal of Decommissioning Waste Solidified by Magnesium Potassium Phosphate Cement

  • Received : 2021.08.25
  • Accepted : 2021.12.07
  • Published : 2022.03.30
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Abstract

The decommissioning of a nuclear power plant generates large amounts of radioactive waste, which is of several types. Radioactive concrete powder is classified as low-level waste, which can be disposed of in a landfill. However, its safe disposal in a landfill requires that it be immobilized by solidification using cement. Herein, a safety assessment on the disposal of solidified radioactive concrete powder waste in a conceptual landfill site is performed using RESRAD. Furthermore, sensitivity analyses of certain selected input parameters are conducted to investigate their impact on exposure doses. The exposure doses are estimated, and the relative impact of each pathway on them during the disposal of this waste is assessed. The results of this study can be used to obtain information for designing a landfill site for the safe disposal of low-level radioactive waste generated from the decommissioning of a nuclear power plant.

Keywords

Acknowledgement

This work was supported by the Nuclear Research and Development Program of the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF-2017M2B2B1072407/NRF-2017M2B2B1072374).

References

  1. Nuclear Safety and Security Commission, A Draft Permission for the Operation Change of Kori Unit 1 Nuclear Power Plant, NSSC Press Release (2017).
  2. International Atomic Energy Agency. Managing Low Radioactivity Material From the Decommissioning of Nuclear Facilities, IAEA Report, Technical Reports Series No. 462 (2008).
  3. Nuclear Safety and Security Committee, The Regulation on the Classification of Radioactive Wastes and Regulatory Clearance, NSSC Notice No. 2020-6 (2020).
  4. J.Y. Pyo, W. Um, and J. Heo, "Magnesium Potassium Phosphate Cements to Immobilize Radioactive Concrete Wastes Generated by Decommissioning of Nuclear Power Plants", Nucl. Eng. Technol., 53(7), 2261-2267 (2021). https://doi.org/10.1016/j.net.2021.01.005
  5. Radioactivity. "An Operational Repository for Very low-level Waste." Radioactivity. Accessed Aug. 10 2021. Available from: http://radioactivity.eu.com/site/pages/VLLW_Disposal.htm.
  6. S. Kamboj, E. Gnanapragasam, and C. Yu. User's Guide for RESRAD-ONSITE Code, Version 7.2, Argonne National Laboratory Technical Report, ANL/EVS/TM18/1 (2018).
  7. C. Yu, A.J. Zielen, J.J. Cheng, D.J. LePoire, E. Gnanapragasam, A. Wallo, W.A. Williams, and H. Peterson. User's Manual for RESRAD Version 6, Argonne National Laboratory Technical Report, ANL/EAD-4 (2001).
  8. W.S. Jeong, S.B. Hong, B.K. Seo, S.K. Park, and J.H. Park, "Safety Assessment for the Disposal of Very Low-Level Radioactive Concreter Wastes", Proc. of the 2003 Autumn Meeting, Korean Nuclear Society, Yongpyong (2003).
  9. J. Jeong, N.Y. Ko, D.K. Cho, M.H. Baik, and K.H. Yoon, "Estimation of Exposure Doses for the Safe Management of NORM Waste Disposal", Radiat. Prot. Dosimetry, 181(4), 394-402 (2018). https://doi.org/10.1093/rpd/ncy041
  10. J. Jang, T.M. Kim, C.H. Cho, and D.S. Lee, "Radiological Safety Assessment for a Near-Surface Disposal Facility Using RESRAD-ONSITE Code", J. Nucl. Fuel Cycle Waste Technol., 19(1), 123-132 (2021). https://doi.org/10.7733/jnfcwt.2021.19.1.123
  11. International Commission on Radiation Protection, "Age-dependent Doses to Members of the Public From Intake of Radionuclides: Part 5 Compilation of Ingestion and Inhalation Dose Coefficient", Ann. ICRP, 26(1), 1-91 (1996). https://doi.org/10.1016/S0146-6453(00)89192-7