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Morita, Kenji; Morimoto, Makoto; Hisada, Masaki; Fukui, Yasutaka
JAEA-Technology 2015-038, 30 Pages, 2016/02
JAEA-Technology-2015-038.pdf:14.65MB
The Old Waste Treatment Facility for JOYO (Old JWTF) has been operated to treat radioactive liquid waste from the experimental fast reactor JOYO and post irradiation examination facilities. Operation of Old JWTF stopped in 1995, and dismantling & decontamination method has discussed. As a response to discussion results of remote and dismantling method in high dose environment on 2013, its concept examination was discussed on 2014. Results are follows. As a cutting tool for Old JWTF equipment, wire saw is selected from cutting ability (speed and thickness of objects). Discussed the component technology of wire saw remote operation system (handling, monitoring, collection method of secondary waste, else).
Morita, Kenji; Morimoto, Makoto; Hisada, Masaki; Fukui, Yasutaka
JAEA-Technology 2015-037, 28 Pages, 2016/01
JAEA-Technology-2015-037.pdf:8.44MB
Deuterium Critical Assembly (DCA) achieved first critically in 1969 and used for research and development program of Advanced Thermal Reactor. To achieved the aim of facility, DCA decommissioning work started in 2002. Decommissioning schedule consists of 4 stages. The third stage, which is the main work (To dismantle and remove reactor vessel and main equipment), was started in 2008 and will be finished at 2023. This report describes DCA decommissioning work and data (Ability of cutting tools and Man-hours) in 2013.
Hisada, Tsukasa*
JNC TJ7440 2002-005, 126 Pages, 2002/03
JNC-TJ7440-2002-005.pdf:3.81MB
no abstracts in English
Nemoto, K.*; Otagaki, Takao*; Shimoyoshi, Takuji*; *; Teshima, Tomoko*; Hisada, Tsukasa*; *
PNC TJ1250 93-002, 298 Pages, 1993/02
None
Koga, Yasuhiko*; Kaira, Kyoichi*; Yamada, Masanobu*; Dobashi, Kunio*; Matsuzaki, Shinichi*; Hisada, Takeshi*; Koka, Masashi; Yamada, Naoto; Sato, Takahiro; Yokoyama, Akihito; et al.
no journal, ,