Effects of high burn-up operation of LWR and extended cooling period of spent fuel on high-level waste properties for vitrification and storage

Kota Kawai, Hiroshi Sagara, Kenji Takeshita, Masahiro Kawakubo, Hidekazu Asano, Yaohiro Inagaki, Yuichi Niibori, Seichi Sato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Looking ahead to final disposal of high-level radioactive waste arising from further utilization of nuclear energy, the effects of burn-up of LWR with UO2 and MOX fuel and extended cooling period of spent fuel on waste management was discussed. It was assumed that the waste loading of vitrified waste is restricted by three factors: heat generation rate, MoO3 content, and platinum group metal content. As a result of evaluation for effects of extended cooling period, the waste loading of vitrified waste generated from both UO2 and MOX fuel could be increased in the current vitrification technology. For the storage of the MOX fuel vitrified waste with higher waste loading, however, those vitrified waste require long storage period because decay heat of 241Am contributes significantly. Therefore, the evaluation of effects of Am separation on the storage period was performed. The results showed, 70 to 90% of Am separation is desirable to shorten the storage period. These results indicate that nuclides separation could be one of efficient solutions in order to cope with extension of cooling period of spent fuel.

Original languageEnglish
Title of host publication2017 International Congress on Advances in Nuclear Power Plants, ICAPP 2017 - A New Paradigm in Nuclear Power Safety, Proceedings
PublisherInternational Congress on Advances in Nuclear Power Plants, ICAPP
ISBN (Electronic)9784890471676
Publication statusPublished - Jan 1 2017
Event2017 International Congress on Advances in Nuclear Power Plants: A New Paradigm in Nuclear Power Safety, ICAPP 2017 - Fukui and Kyoto, Japan
Duration: Apr 24 2017Apr 28 2017

Publication series

Name2017 International Congress on Advances in Nuclear Power Plants, ICAPP 2017 - A New Paradigm in Nuclear Power Safety, Proceedings

Other

Other2017 International Congress on Advances in Nuclear Power Plants: A New Paradigm in Nuclear Power Safety, ICAPP 2017
CountryJapan
CityFukui and Kyoto
Period4/24/174/28/17

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All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering

Cite this

Kawai, K., Sagara, H., Takeshita, K., Kawakubo, M., Asano, H., Inagaki, Y., ... Sato, S. (2017). Effects of high burn-up operation of LWR and extended cooling period of spent fuel on high-level waste properties for vitrification and storage. In 2017 International Congress on Advances in Nuclear Power Plants, ICAPP 2017 - A New Paradigm in Nuclear Power Safety, Proceedings (2017 International Congress on Advances in Nuclear Power Plants, ICAPP 2017 - A New Paradigm in Nuclear Power Safety, Proceedings). International Congress on Advances in Nuclear Power Plants, ICAPP.