Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
; Maeda, Yukimoto; Suzuki, Soju; Hara, Hiroshi
Russian Forum for Sci. and Tech. FAST NEUTRON REAC, 0 Pages, 2003/00
The experimental fast reactor JOYO attained its initial criticality in 1977 with the MK-I breeder core. In 1982, JOYO was modified to the MK-II irradiation core and finished its operation in 2000. Throughout the successful operation of MK-I and MK-II core, the net operation time has exceeded 60,000 hours, and experience on the operation, maintenance and core/fuel management of a fast reactor plant has been accumulated. Furthermore the MK-III modification program is underway to improve the irradiation capability of JOYO. When the MK-III core is started, it will support irradiation tests in feasibility studies for fast reactor and related fuel cycle research and development in Japan.
Nagata, Takashi; Nagata, Takashi
Russian Forum for Science and Technology FAST NEUT, 0 Pages, 2003/00
Focusing on the cover layer materials (as the Radon Barrier Materials), which could have the effect to restrain the radon from scattering into the air and the effect of the radiation shielding, we produced the radon barrier materials with crude bentonite on an experimental basis, using the rotary type comprehensive unit for grinding and mixing, through which we carried out the evaluation of the characteristics thereof.