A fast reactor transmutation system for 6 LLFP nuclides

Toshio Wakabayashi, Makoto Takahashi, Satoshi Chiba, Naoyuki Takaki, Yoshiaki Tachi

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


A fast reactor transmutation system with enhanced transmutation efficiency for six long-lived fission products (LLFP: 79Se, 93Zr, 99Tc, 107Pd, 129I, and 135Cs) was evaluated. A new fast reactor transmutation system concept consisting of three fast reactor cores was constructed by loading six LLFP nuclides on a radial blanket, axial blanket and shield using YD2 and YH2 moderators. By combining three MONJU-class fast reactors, the ratio of the amount of transmuted nuclides in the three reactors to the amount of nuclides produced in the three reactors were achieved 1 or more for all six LLFP nuclides, and the effective half-lives were significantly reduced.

Original languageEnglish
Article number110667
JournalNuclear Engineering and Design
Publication statusPublished - 2020 Jul


  • Fast reactor
  • Six LLFP nuclides
  • Support ratio
  • Three-core system
  • YD and YD moderator

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Safety, Risk, Reliability and Quality
  • Waste Management and Disposal
  • Mechanical Engineering


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