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Nishimura, Akihiko; Ide, Tsugio*; Ishihara, Nobuyuki*; Ito, Minoru*; Urata, Kenyu*
no journal, ,
We report on the industrial deployment of FBG sensors fabricated by picosecond pulse laser precision processing and the start of new collaborative research. A radiation-resistant FBG sensor was fabricated atdeltafiber.jp, a company to which JAEA transferred its FBG sensor fabrication technology. This sensor was installed in the J-CUPID for water-hammer effect demonstration and manipulator at the training facility owned by J-Tech Corporation, which is engaged in human resource development for nuclear fuel reprocessing plants.
Nishimura, Akihiko; Ide, Tsugio*; Ishihara, Nobuyuki*
no journal, ,
The technologies surrounding the 1F decommissioning work are gradually forming a network with various industrial fields. Here, we report on the technical collaboration related to remote strain measurement centered on Fiber Bragg Grating (FBG) sensing. Strain monitoring can be used for gripping force measurement of manipulators in case of handling fragile debris due to weathering effects. FBG sensing for pipeline maintenance and heat exchanger device are introduced.
Nishimura, Akihiko; Ide, Tsugio*; Ishihara, Nobuyuki*
no journal, ,
Nishimura, Akihiko; Ide, Tsugio*; Ishihara, Nobuyuki*; Takasaki, Koji
no journal, ,
Research and Development of heat resistant FBG sensor is introduced for reactor decommissioning for the usage under high temperature and/or high radiation environment. By applying the lessons learned from the March 2007 Noto Peninsula Earthquake, we can open the door to a future in which fiber optic remote sensing technology will be useful for the safe operation of energy plants. Since the tragic accident at the Fukushima Daiichi Nuclear Power Station (1F). At this conference, we will report on the implementation of FBG sensors on robot arms and their application to the piping system of demo plant. The purpose is to measure the debris retention force and observe the water pressure rise.
Nishimura, Akihiko; Ide, Tsugio*; Ishihara, Nobuyuki*; Urata, Kenyu*
no journal, ,
no abstracts in English
Nishimura, Akihiko; Ide, Tsugio*; Ishihara, Nobuyuki*
no journal, ,
no abstracts in English
Nishimura, Akihiko; Ide, Tsugio*; Ishihara, Nobuyuki*; Takasaki, Koji
no journal, ,
no abstracts in English
Nishimura, Akihiko; Ide, Tsugio*; Ishihara, Nobuyuki*; Takasaki, Koji
no journal, ,
Industrial deployment of FBG sensor fabricated by picosecond pulsed laser precision processing is reported. Application to the Fukushima Daiichi NPP decommissioning, a robot arm equipped with a feedback mechanism is assumed to keep the retention force of nuclear fuel debris appropriately. For this purpose, FBG processing into radiation-tolerant optical fibers are implemented. As a preparation for development, the stress measurement of high temperature piping under restraint was carried out. Furthermore, the gripping mechanism of the robot arm is manufactured as a simulator for FBG sensing telemetry.