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Recycling technology research and development of advanced neutron multipliers for DEMO applications

Research Project

Project/Area Number 18K05006
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 31010:Nuclear engineering-related
Research InstitutionNational Institutes for Quantum and Radiological Science and Technology

Principal Investigator

Kim Jaehwan  国立研究開発法人量子科学技術研究開発機構, 六ヶ所核融合研究所 ブランケット研究開発部, 主幹研究員(定常) (80613611)

Co-Investigator(Kenkyū-buntansha) 中道 勝  国立研究開発法人量子科学技術研究開発機構, 六ヶ所核融合研究所 ブランケット研究開発部, グループリーダー(定常) (60343927)
宮本 光貴  島根大学, 学術研究院理工学系, 准教授 (80379693)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords中性子増倍材 / 核融合 / 増殖機能材 / リサイクル技術 / プラズマ焼結 / 回転電極法 / ベリライド / 再使用プロセス / 酸素濃度 / リチウム濃度 / プラズマ焼結法 / 先進中性子増倍材 / プラズマ清浄法 / 蒸発回収法 / 元素分離法
Outline of Final Research Achievements

A huge beryllides with about 500 tons per reactor will be packed as advanced neutron multipliers in fusion DEMO blankets, which is replaced every four years. Moreover, since a large amount of reusable Be contained in used neutron multipliers generated during blanket replacement, it is indispensable to develope recycling technology for Be pebbles.
In this study, it was clarified that the remained 30% (the existing pebble production yield is about 70%) can be recycled, and impurities (Li, hydrogen isotopes, oxygen, etc.) that can be formed in the neutron multipliers in the harsh environment can be removed entirely by utilizing the existing production methods, plasma sintering method and rotating electrode method.

Academic Significance and Societal Importance of the Research Achievements

核融合炉ブランケットには、中性子増倍材として膨大なベリリウム金属が装荷されるが、原料全量を輸入に依存している。この中性子増倍材は、1㎜球の形として装荷されるが、1㎜球の製造収率は約70%だが、残り30%も再使用でき、造粒収率を向上させることに成功した。更に、使用済みベリリウム金属は、別の材料との反応により、ベリリウムに生成された不純物(酸素、Li、水素同位体等)についても、既存の造粒法によって、取り除けることを明らかにした。
全量輸入に依存しているベリリウムの収率向上及び、ベリリウム資源のリサイクル技術開発の成果であるため、資源の安定な確保の観点からも社会的意義も大きいと考えられる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (17 results)

All 2021 2020 2019 2018

All Journal Article (8 results) (of which Peer Reviewed: 7 results) Presentation (9 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] A recycling process on vanadium beryllium intermetallic compounds as advanced neutron multipliers for DEMO fusion applications2021

    • Author(s)
      Jae-Hwan Kim, Suguru Nakano, Mitsutaka Miyamoto, Masaru Nakamichi
    • Journal Title

      Fusion Engineering and Design

      Volume: 162 Pages: 112124-112124

    • DOI

      10.1016/j.fusengdes.2020.112124

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Deuterium and helium desorption behavior and microstructure evolution in beryllium during annealing2021

    • Author(s)
      Sugimoto Yutaka、Nakamichi Masaru、Kim Jae-Hwan、Kurata Hiroki、Haruta Mitsutaka、Miyamoto Mitsutaka
    • Journal Title

      Journal of Nuclear Materials

      Volume: 544 Pages: 152686-152686

    • DOI

      10.1016/j.jnucmat.2020.152686

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A novel method to stably secure beryllium resources for fusion blankets2020

    • Author(s)
      Jae-Hwan Kim, Suguru Nakano, Masaru Nakamichi
    • Journal Title

      Journal of Nuclear Materials

      Volume: 542 Pages: 152522-152522

    • DOI

      10.1016/j.jnucmat.2020.152522

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Compatibility of advanced tritium breeders and neutron multipliers2020

    • Author(s)
      Jae-Hwan Kim, Masaru Nakamichi
    • Journal Title

      Fusion Engineering and Design

      Volume: 156 Pages: 111581-111581

    • DOI

      10.1016/j.fusengdes.2020.111581

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Optimization on producibility improvement and the recycling process of neutron multipliers for fusion applications2020

    • Author(s)
      Jae-Hwan Kim, Masaru Nakamichi
    • Journal Title

      Journal of Material Science

      Volume: 55 Issue: 6 Pages: 2454-2461

    • DOI

      10.1007/s10853-019-04213-0

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Compatibility of advanced functional materials for fusion applications2019

    • Author(s)
      Jae-Hwan Kim, Masaru Nakamichi
    • Journal Title

      Proceedings of the 20th International workshop on ceramic breeder blanket interactions

      Volume: 1 Pages: 106-106

    • Related Report
      2019 Research-status Report
  • [Journal Article] Preliminary research on recycling process of neutron multipliers for fusion application2019

    • Author(s)
      Jae-Hwan Kim, Masaru Nakamichi
    • Journal Title

      Journal of Material Science

      Volume: -

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Granulation of Be12V pebbles using the rotating electrode method2018

    • Author(s)
      Petr Kurinskiy, Jae-Hwan Kim, Masaru Nakamichi
    • Journal Title

      Fusion Engineering and Design

      Volume: 137 Pages: 177-181

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 核融合炉先進中性子増倍材のリサイクル技術開発研究の現状2021

    • Author(s)
      金宰煥、黄 泰現、中野 優、中道 勝、
    • Organizer
      日本原子力学会、2021年春の大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] R&D status on advanced neutron multipliers for fusion applications2021

    • Author(s)
      Jae-Hwan Kim, Masaru Nakamichi
    • Organizer
      International Conference on PROCESSING & MANUFACTURING OF ADVANCED MATERIALS, Processing, Fabrication, Properties, Applications (THERMEC2021)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ベリリウム資源の安定的な確保にむけた革新的金属精製技術開発研究2020

    • Author(s)
      金宰煥、中野 優, 中道 勝
    • Organizer
      日本原子力学会、2020年秋の大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 中性子増倍材の量産システムにおけるプロセス検討2019

    • Author(s)
      金宰煥、クリンスキー ピーター、赤津 孔明, 中道 勝
    • Organizer
      日本原子力学会、2019年秋の大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Compatibility of advanced functional materials for fusion applications2019

    • Author(s)
      Jae-Hwan Kim, Masaru Nakamichi
    • Organizer
      20th International Workshop on Ceramic Breeder Blanket Interactions
    • Related Report
      2019 Research-status Report
  • [Presentation] Compatibility of advanced tritium breeders and neutron multipliers2019

    • Author(s)
      Jae-Hwan Kim, Masaru Nakamichi
    • Organizer
      14th The International Symposium on Fusion Nuclear Technology
    • Related Report
      2019 Research-status Report
  • [Presentation] Deuterium retention property of beryllides pebbles as advanced neutron multipliers2019

    • Author(s)
      Jae-Hwan Kim, Mitsutaka Miyamoto, Masaru Nakamichi
    • Organizer
      12th International Conference on Tritium Science & Technology
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 中性子増倍材の量産システムにおけるプロセス検討2019

    • Author(s)
      金宰煥、クリンスキー ピーター、赤津 孔明, 中道 勝
    • Organizer
      日本原子力学会
    • Related Report
      2018 Research-status Report
  • [Presentation] Preliminary research on recycling process of neutron multipliers for fusion application2018

    • Author(s)
      Jae-Hwan Kim, Petr Kurinskiy, Masaru Nakamichi
    • Organizer
      International Conference on Material and Chemical Engineering
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2022-01-27  

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