Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Application of the Analytic Hierarchy Process (AHP) method to identify the most suitable approach for managing irradiated graphite

  • Giambattista Guidi (ENEA -Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Energy Technologies and Renewable Energy Sources Department and Guglielmo Marconi University) ;
  • Giacomo Goffo (Nuclear Engineering and Technology) ;
  • Anna Carmela Violante (ENEA Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Energy Technologies and Renewable Energy Sources Department)
  • Received : 2024.02.28
  • Accepted : 2024.06.25
  • Published : 2024.11.25
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Abstract

Scientific literature studies irradiated graphite treatment. Research also covers graphite conditioning and its long-term behavior under disposal conditions. The European Commission's CARBOWASTE project, titled "Treatment and disposal of irradiated graphite and other carbonaceous waste", is a key reference for state-of-the-art studies on alternative solutions. It identified 24 strategic options for managing irradiated graphite throughout its complete life cycle. The methodology proposed in this paper entails the application of the Analytic Hierarchy Process (AHP) method to rank the 24 options, placing particular emphasis on the weighting of seven criteria for selecting management options for the irradiated graphite. The highest weights were assigned by experts to 'environment and public safety' (28.05 %) and 'worker safety' (26.16 %). The objective is to develop a standardized approach enabling waste management companies to identify the most appropriate management option, considering structural and legislative constraints in their operating country. Examining the study findings, option 19 "In-situ entombment" stands out as the best choice in both the CARBOWASTE project and the proposed methodology. Thus, this methodology could assist hypothetical entities in examining management options for irradiated graphite, with the aim of identifying the optimal solution for graphite waste disposal.

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References

  1. IAEA, Processing of Irradiated Graphite to Meet Acceptance Criteria for Waste Disposal - Results of a Coordinated Research Project, International Atomic Energy Agency, 2016. IAEA-TECDOC-1790.
  2. IAEA, Progress in Radioactive Graphite Waste Management, International Atomic Energy Agency, 2010. IAEA-TECDOC-1647.
  3. IAEA. Characterization, treatment and conditioning of radioactive graphite from decommissioning of nuclear reactors, International Atomic Energy Agency, 2006. IAEA-TECDOC-1521.
  4. J. Li, M.L. Dunzik-Gouga, J. Wang, Recent advances in the treatment of irradiated graphite: a review, Ann. Nucl. Energy 110 (2017) 140-147, https://doi.org/10.1016/j.anucene.2017.06.040.
  5. L. Fuks, I. Herdzik-Koniecko, K. Kiegel, G. Zakrzewska-Koltuniewicz, Management of radioactive waste containing graphite: overview of methods, Energies 13 (2020) 4638, https://doi.org/10.3390/en13184638.
  6. K. Fu, M. Chen, S. Wei, X. Zhong, A comprehensive review on decontamination of irradiated graphite waste, J. Nucl. Mater. 559 (2022) 153475, https://doi.org/10.1016/j.jnucmat.2021.153475.
  7. Decreto interministeriale 7 agosto 2015 "Classificazione dei rifiuti radioattivi, ai sensi dell'articolo 5 del decreto legislativo 4 marzo 2014, n. 45 (Italian decree).
  8. IAEA Safety Standards, Classification of Radioactive Waste. General Safety Guide N. GSG-1, International Atomic Energy Agency, 2009.
  9. A. Banford, H. Eccles, M. Graves, W. von Lensa, S. Norris, Carbowaste - an integrated approach to irradiated graphite, Nucl. Future 4 (5) (2008) 268-270.
  10. A. Wareing, L. Abrahamsen-Mills, L. Fowler, M. Grave, R. Jarvis, M. Metcalfe, S. Norris, A.W. Banford, Development of integrated waste management options for irradiated graphite, Nucl. Eng. Technol. 49 (2017) 1010-1018, https://doi.org/10.1016/j.net.2017.03.001.
  11. A. Wickham, H.J. Steinmetz, P. O'Sullivan, M.I. Ojovan, Updating irradiated graphite disposal: project "GRAPA" and the international decommissioning network, J. Environ. Radioact. 171 (2017) 34-40, https://doi.org/10.1016/j.jenvrad.2017.01.022.
  12. A. Wareing, L. Abrahamsen, R. Jarvis, M. Metcalfe. CARBOWASTE Treatment and Disposal of Irradiated Graphite and Other Carbonaceous Waste - Grant Agreement Number: FP7-211333 - Deliverable D-1.5.3 MCDA Assessments, https://igdtp.eu/activity/carbowaste/(accessed on 12 April 2024).
  13. L. Abrahamsen, A. Wareing. CARBOWASTE Treatment and Disposal of Irradiated Graphite and Other Carbonaceous Waste - Grant Agreement Number: FP7-211333 - Deliverable D-1.5.4 Identification of Preferred Options, https://igdtp.eu/activity/carbowaste/(accessed on 12 April 2024).
  14. L. Abrahamsen-Mills, A. Wareing, L. Fowler, R. Jarvis, S. Norris, A. Banford, Development of a multi criteria decision analysis framework for the assessment of integrated waste management options for irradiated graphite, Nucl. Eng. Technol. 53 (2021) 1224-1235, https://doi.org/10.1016/j.net.2020.10.008.
  15. T.L. Saaty, The Analytic Hierarchy Process, McGraw-Hill, New York, 1980.
  16. R.W. Saaty, The analytic hierarchy process - what it is and how it is used, Mathematical Modeling 9 (N. 3-5) (1987) 161-176, https://doi.org/10.1016/0270-0255(87)90473-8.
  17. Y.J. Lim, N.A. Basri, Site selection for a potential radioactive waste repository in Peninsular Malaysia: GIS-based weight linear combination and multi-criteria decision-making analysis, Prog. Nucl. Energy 149 (2022) 104252, https://doi.org/10.1016/j.pnucene.2022.104252.
  18. J. Guiller Madeira, A.C.M. Alvim, V.B. Martins, N.A. Monteiro, Selection of a tool to decision making for site selection for high level waste, EPJ Nuclear Sci. Technol. 2 (2016), https://doi.org/10.1051/epjn/e2015-50039-x.
  19. G. Guidi, F. Gugliermetti, D. Astiaso Garcia, A.C. Violante, Influence of environmental, economic and social factors on a site selection index methodology for a technological centre for radioactive waste management, Chem. Eng. Trans. 18 (2009) 505-510, https://doi.org/10.3303/CET0918082.
  20. https://www.mase.gov.it/comunicati/nucleare-pubblicato-lelenco-delle-51-areeidonee-alla-localizzazione-del-deposito (in Italian) (accessed on 18 April 2024).