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Sakakibara, Yasuhide; IKEDA, Hiroshi; Yokota, Yoshio; Kitabata, Takuya; Yamaguchi, Toshihiko
JNC TN4200 2004-001, 317 Pages, 2004/08
JNC-TN4200-2004-001.pdf:24.97MB
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IAEA Gijutsu Kaigo, 0 Pages, 2002/05
JNC is undertaking a major of research and development on liquid-metal cooled fast breeder reactors, which is fully supported by the government of Japan and the electrical utilities. Hence, the perspective of JNC on knowledge preservation is rather different from that of organizations where the fast reactor project has been scaled down or discontinued.
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PNC TN941 83-27VOL2, 456 Pages, 1983/02
PNC-TN941-83-27VOL2.pdf:20.9MB
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PNC TN941 83-27VOL1, 827 Pages, 1983/02
PNC-TN941-83-27VOL1.pdf:25.12MB
In the Experimental Fast Reactor "Joyo", Core Conversion from the Breeding Core (MK-I Core) to the Irradiation Core (MK-II Core) was begun in January 1982. Core Conversion required the refueling of 290 core elements, reconstruction of the control rod drive mechanism, and change-out of both the upper guide tube and lower guide tube of the control rods. The schedule for these activities was planned carefully to achieve 100MWt power in March 1983. Joyo achieved MK-II core initial criticality on November 22, 1982, on schedule and immediately began core characterzation. As the result of the Core Conversion activities, we handled many core elements, twice as many as before this core conversion, and in so doing obtained many kinds of experience and data for maintenance and operation of the refueling system. This report describes the considerable pre-conversion activities and planning, and the accomplishments and results of these Core Conversion activities.
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PNC TN941 82-117, 950 Pages, 1982/05
The reactor power of the Experimental Fast Reactor Joyo was raised to 50 MW in July, 1978 and then to 75 MW in July, 1979. This report discribes the temperature distributions of the rotating plugs of Joyo measured from April, 1978 through December, 1981. The following results were obtained. (1)The overall temperature distributions of the large rotating plug the samll rotating plug, and the upper-core-structure have a tendency to become higher in this order and become steady state within about a week. (2)The temperature distributions of the rotating plugs have no tendency to change periodically within either a few days or longer period, and unusual temperature distributions due to imbalanced sodium vapor deposition have not been detected.
