Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Nakashio, Nobuyuki; Nakashima, Mikio; Hirabayashi, Takakuni*
Nihon Genshiryoku Gakkai Wabun Rombunshi, 3(3), p.279 - 287, 2004/09
Large-scale melting tests of simulated miscellaneous solid wastes were conducted to characterize solidified products (50L-drum size). Two heating modes were adopted in the tests: hybrid heating and induction heating modes. In the former, wastes were heated with both an induction furnace and a plasma torch, and in the latter, an electrically-conductive crucible was used with the induction furnace. Visual observation, chemical analysis and radioactivity measurements were conducted to the solidified products. It was found that the radioisotope distribution of solidified products was almost homogeneous. There was no remarkable deterioration in the solidified products subsequent to the leaching test.
Hoshi, Akiko; Nakashio, Nobuyuki; Nakashima, Mikio
Genshiryoku Bakkuendo Kenkyu, 10(1-2), p.93 - 102, 2004/03
The Japan Atomic Energy Research Institute (JAERI) decided to adopt an advanced volume reduction program for low-level radioactive wastes. In this program, inorganic wastes are converted to stable glassy products suitable for disposal by a plasma melting system in the Waste Volume Reduction Facilities (WVRF). In this paper, plasma melting test of crucibles,ceramic filter elements,asbestos,and simulated fly ashes were carried out as a part of technical support for WVRF. The plasma melting treatment was applicable for crucibles and asbestos because homogeneous and glassy products were obtained by controlling of waste and loading condition. It was found that an oxidizing slag is needed for effective melting condition of ceramic filter elements with a plasma torch with inert gas, and controlling of slag components have the potential to stabilize volatile metals such as Zn, Pb in a solidified product in the melting test of simulated fly ash.
Nakashio, Nobuyuki; Nakashima, Mikio
Dekomisshoningu Giho, (26), p.45 - 55, 2002/11
Melting treatment of low-level radioactive wastes (LLW) is considered to be a promising technology for the preparation of a stable solid that will be disposed of in near surface repositories. This is because of large reduction of waste volume and production of a stable homogeneous solidified product. In the Japan Atomic Energy Research Institute (JAERI), the construction of the Waste Volume Reduction Facilities (WVRF) has been in progress since 1999. In advance of operation of the WVRF, we have been conducting melting tests of non-metallic solid wastes with the aim of establishing the optimum melting condition for preparation of a stable solid that is suitable for disposal. We have reviewed a part of the melting test conducted in our program.
Nakashima, Mikio; Fukui, Toshiki*; Nakashio, Nobuyuki; Isobe, Motoyasu*; Otake, Atsushi*; Wakui, Takuji*; Hirabayashi, Takakuni*
Journal of Nuclear Science and Technology, 39(6), p.687 - 694, 2002/06
Times Cited Count：16 Percentile：69.83(Nuclear Science & Technology)no abstracts in English
Fukui, Toshiki; Nakashio, Nobuyuki; Isobe, Motoyasu; Otake, Atsushi*; Wakui, Takuji*; Hirabayashi, Takakuni*; Nakashima, Mikio
JAERI-Review 2000-033, 82 Pages, 2001/02
JAERI-Review-2000-033.pdf:2.61MB
no abstracts in English
Isobe, Motoyasu; Kameo, Yutaka; Nakashio, Nobuyuki; Wakui, Takuji*; Iwata, Keiji*; Kibayashi, Tatsuyuki*; Kanazawa, Katsuo; Nakashima, Mikio; Hirabayashi, Takakuni*
JAERI-Tech 2000-049, 29 Pages, 2000/09
JAERI-Tech-2000-049.pdf:2.87MB
no abstracts in English
Fukui, Toshiki; Nakashio, Nobuyuki; Isobe, Motoyasu; Otake, Atsushi*; Wakui, Takuji*; Nakashima, Mikio; Hirabayashi, Takakuni*
Dai-7-Kai Doryoku Enerugi Gijutsu Shimpojiumu Koen Rombunshu (00-11), p.356 - 359, 2000/00
no abstracts in English
Hashizume, Shuji; ; Matsumoto, Junko; Bamba, Tsunetaka
Genshiryoku Bakkuendo Kenkyu, 5(1), p.37 - 44, 1998/08
no abstracts in English
Hashizume, Shuji; Matsumoto, Junko; Bamba, Tsunetaka
JAERI-Review 96-013, 25 Pages, 1996/10
JAERI-Review-96-013.pdf:1.06MB
no abstracts in English
、
Solid Wastes by Microwave Heating; *; ; ; ; ; *; *
JAERI-M 84-001, 76 Pages, 1984/02
no abstracts in English
