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Kawatsuma, Shinji; Mimura, Ryuji; Asama, Hajime*
ROBOMECH Journal (Internet), 4, p.6_1 - 6_7, 2017/02
It was cleared that portability of emergency response reconnaissance robot had been very important. So, RESQ-A robots, which had been developed by Japan Atomic Energy Research Institute (present Japan Atomic Energy Agency), had been considered from the view point of portability. After Fukushima Daiichi NPPs' accidents occurred, JAEA had modified a RESQ-A robot to JAEA-3 robot in order to meet the anticipated situation of the accidents. However, actual situation was beyond the anticipated situation, and additional modification was required. The actual confused situation was many rubble were scattered and temporary cables and hoses were constructed in the reactor buildings, so that reconnaissance robots should be conveyed by operators through limited route, should be reassembled in short time and should be able to remove cable and tiers for reduce the operators' exposure dose during maintenance. JAEA modified again JAEA-3 robot system, with cooperation of operators from Fukushima Daiichi NPPs. It was lesson learned that emergency response reconnaissance robot needed to be unitized for portability, and "Unitization Policy for emergency response reconnaissance robot" was developed.
Kawatsuma, Shinji; Asama, Hajime*
Nihon Robotto Gakkai-Shi, 34(8), p.552 - 557, 2016/10
There was not a guideline available for researchers, developers or users for robots or heavy construction machines on the evaluation of radiation tolerance and management method of robots and heavy construction machines using semiconductors, like as CPUs on the shelf, under radiation condition, when Fukushima Daiichi NPPs accidents occurred on March 11th, 2011. The evaluation and the management method became necessary, in order to deploy robots like as QUINCE developing for big city accidents or unmanned heavy construction machines for landside disaster. According to "radiation tolerance data base on parts or materials" developed in 1980's to 1990's by Japan Atomic Energy Agency (JAEA), a guideline, for robots and unmanned heavy construction machines, was tentatively developed.
Kawatsuma, Shinji; Asama, Hajime*
Proceedings of American Nuclear Society 2014 Annual Meeting; Embedded Topical Meeting on Decommissioning and Remote Systems (D&RS 2014) (DVD-ROM), p.19 - 21, 2014/06
Contamination survey and decontamination methodology became to be needed, because several robots could not have been decontaminated enough for direct maintenance even after water spray decontamination when robots and robot control vehicles were contaminated during deployment for emergency response to Fukushima Daiichi NPPs accidents. "Basic Decontamination Methodology" was established based on confirmation of water spray effectiveness, specification of parts difficult to decontaminate by water spray and identifying of effective decontamination method for the parts, after investigations of the robots and robot control vehicles deployed for emergency response to Fukushima Daiichi NPPs accidents.
Matsuhira, Nobuto*; Komatsu, Ren*; Nakashima, Shinsuke*; Yamashita, Atsushi*; Fukui, Rui*; Takahashi, Hiroyuki*; Shimazoe, Kenji*; Woo, H.*; Tamura, Yusuke*; Takashi, Takayuki*; et al.
no journal, ,
Nakashima, Shinsuke*; Komatsu, Ren*; Alessandro, M.*; Angela, F.*; Woo, H.*; Kawabata, Kuniaki; Asama, Hajime*
no journal, ,
Matsuhira, Nobuto*; Komatsu, Ren*; Nakashima, Shinsuke*; Yamashita, Atsushi*; Fukui, Rui*; Takahashi, Hiroyuki*; Shimazoe, Kenji*; Woo, H.*; Tamura, Yusuke*; Takashi, Takayuki*; et al.
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This research aims to develop human resources in the field of remote technology for the decommissioning of the Fukushima Daiichi Nuclear Power Plant. We conduct research on a monitoring platform for fuel debris removal. Here, the developments on prototype experiments were described. We expect to develop research personnel through participation in projects, lectures, and facility tours.
Nakashima, Shinsuke*; Komatsu, Ren*; Alessandro, M.*; Fraggasso, A.*; Woo, H.*; Matsuhira, Nobuto*; Kawabata, Kuniaki; Asama, Hajime*
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