TOP > R&D Topics > Development of “Robot Arm / Access Rail”; Testing of device for access inside the pedestal [Developed by Mitsubishi Heavy Industries (MHI)] (March, 2017)

Development of “Robot Arm / Access Rail”; Testing of device for access inside the pedestal [Developed by Mitsubishi Heavy Industries (MHI)] (March, 2017)

Mar.21,2017

As part of its R&D efforts for decommissioning of Fukushima Daiichi Nuclear Power Station (NPS), IRID is involved in the Project for Development of Fundamental Technologies for Retrieval of Fuel Debris and Internal Structures; the Subsidy Project of Decommissioning and Contaminated Water Management,.

 

Here, we introduce “R&D updates of access devices inside the pedestal” which is a key access technology for Partial Submersion Side Entry Method, as one of the fuel debris retrieval methods.

(1) R&D on Access Rail
[Access rail function]
・Guidance into the pedestal by robot arm for fuel debris retrieval (guidance up to center of pedestal is assumed)
・Transportation of fuel debris storage unit canister between a work cell and inside the pedestal

(2) R&D on Robot Arm
[Robot arm specification]
・Loading at the tip: 2,000kg ( a diameter of 60 mm of core boring is assumed)
・Arm length: 7,100mm (the access route is assumed to be from the bottom of RPV to approximately 1.5m below the bottom of pedestal)
・Accuracy of high positioning with multiple axes (six aces)

[Attachment: “Overview of Access Rail and Robot Arm]
http://irid.or.jp/wp-content/uploads/2017/03/20170321.pdf PDF

<Video image> * Link to the YouTube site.

20170321_P01 20170321_P02
32 X speed Access Rail (side view) 32X speed Access Rail (front view)
20170321_P03
Robot Arm (edited version)

<Reference>
[Access Rail]

20170321_01 20170321_02
20170321_03 20170321_04
20170321_05

[Robot Arm]

20170321_06 20170321_07
20170321_08 20170321_09
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