Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2018 Impact factor 0.961

Nuclear Science and Techniques ›› 2008, Vol. 19 ›› Issue (2): 117 doi: 10.1016/S1001-8042(08)60035-4

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Challenges in spent nuclear fuel final disposal: conceptual design models

Mukhtar Ahmed RANA   

  1. Physics Division, Directorate of Science, PINSTECH, P.O. Nilore, Islamabad, Pakistan
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Mukhtar Ahmed RANA . Challenges in spent nuclear fuel final disposal: conceptual design models.Nuclear Science and Techniques, 2008, 19(2): 117     doi: 10.1016/S1001-8042(08)60035-4

Abstract: The disposal of spent nuclear fuel is a long-standing issue in nuclear technology. Mainly, UO2 and metallic U are used as a fuel in nuclear reactors. Spent nuclear fuel contains fission products and transuranium elements, which would remain radioactive for 104 to 108 years. In this brief communication, essential concepts and engineering elements related to high-level nuclear waste disposal are described. Conceptual design models are described and discussed considering the long-time scale activity of spent nuclear fuel or high level waste. Notions of physical and chemical barriers to contain nuclear waste are highlightened. Concerns regarding integrity, self-irradiation induced decomposition and thermal effects of decay heat on the spent nuclear fuel are also discussed. The question of retrievability of spent nuclear fuel after disposal is considered. 

Key words: Spent nuclear fuel disposal, Conceptual design models, Self-irradiation induced decomposition, Thermal effects