Journal of Fusion Energy

, Volume 12, Issue 1, pp 11–19

Fusion safety and environmental R&D tasks in Japan


  • Yasushi Seki
    • Tokyo Institute of Technology
  • Masaki Saito
    • Tokyo Institute of Technology
  • Isao Aoki
    • Naka Fusion Research EstablishmentJapan Atomic Energy Research Institute
  • Takashi Okazaki
    • Hitachi Energy Research LaboratoryHitachi Ltd.
  • Satoshi Sato
    • Naka Fusion Research EstablishmentJapan Atomic Energy Research Institute
  • Hideyuki Takatsu
    • Naka Fusion Research EstablishmentJapan Atomic Energy Research Institute

DOI: 10.1007/BF01059349

Cite this article as:
Seki, Y., Saito, M., Aoki, I. et al. J Fusion Energ (1993) 12: 11. doi:10.1007/BF01059349


This paper aims at listing and evaluating the status of all the research and development (R&D) tasks necessary for the construction of a safe and environmentally benign fusion experimental reactor. At this time, it is not possible to define precisely the R&D tasks necessary for the licensing approval and those that are useful in improving safety but not necessarily required for licensing because the licensing procedure itself is still being discussed. Among the R&D tasks, the most important are considered to be those related to tritium safety, namely, those effective in reducing the uncertainty in tritium inventory in the plasma facing components and blanket, uncertainty in tritium permeation and leakage, and those to clarify tritium behavior in the containment and in the environment. The R&D tasks with second priority are judged to be those related to mobilization of the activation products such as activated erosion dust or the corrosion products. The volatilization of structural metal caused by the oxidation at high temperature seems to be highly unlikely but some experiments are needed to assure that this is the case.

Key words

fusion reactorsafetyR&D tasktritiumactivation productsITER

Copyright information

© Plenum Publishing Corporation 1993