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Kadowaki, Haruhiko; Matsushima, Akira; Nakajima, Yoshiaki
Proceedings of 24th International Conference on Nuclear Engineering (ICONE-24) (DVD-ROM), 6 Pages, 2016/06
Advanced thermal reactor "FUGEN" is a heavy water-moderated boiling light water-cooled pressure tube-type reactor. Because tritium had been generated in the heavy water during the reactor operation, the heavy water system and helium system were contaminated by tritium. The chemical form of the tritium was water molecule in FUGEN. Air-through drying and vacuum drying were applied to the system drying, and it was demonstrated that both methods were effective for drying treatment of heavy water in system. Helium system, low-contamination and non inclusion, could finish the vacuum drying rapidly. However, Heavy water purification system needed long period for drying treatment. The result showed that it needed long period to dry up if the objects include the adsorbent of water such as alumina pellet, resin and silica gel. But it can be accelerated by replacement absorbed heavy water to light water from the result of drying treatment of the rotary type dehumidifier.
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Journal of Nuclear Science and Technology, 32(3), p.237 - 244, 1995/00
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Iijima, Takashi; Nakajima, Yoshiaki; Sakurai, Naoto
PNC TN3410 92-014, 45 Pages, 1992/06
A fuzzy logic control system (flcs) has been developed to enhance an ability of reactor feedwater control of the fugen n.p.s. the first stage: A simulation study, and the second stage: development of prototype system which had an on-line support function were completed. Validation tests for the prototype system have been performed since oct. 1989 and results of the tests indicated the potential of the flcs. As the last stage of development, an on-line practical flcs is being developed and it will be introduced to the feedwater control system of the fugen in jul.1992.
; ; ; Nakamura, Takahisa; ;
ICONE-1(The 1st JSME-ASME Joint International Con, 0 Pages, 1991/00
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Iijima, Takashi; ;
IAEA International Conference on Advances in the Operational Safety of Nuclear Power Plants, ,
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