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福島第一原子力発電所廃炉のためのプラント内線量率分布評価と水中デブリ探査に係る技術開発,9; 水中デブリ探査用小型ROVの実証試験

Technology development to evaluate dose rate distribution and to search for fuel debris submerged in water for decommissioning of Fukushima Daiichi Nuclear Power Station, 9; Tank tests of ROVs to map the debris in the primary containment vessel

鎌田 創*; 加藤 道男*; 西村 和也*; Nancekievill, M.*; Jones, A. R.*; Lennox, B.*; Joyce, M. J.*; 奥村 啓介; 片倉 純一*

Kamada, So*; Kato, Michio*; Nishimura, Kazuya*; Nancekievill, M.*; Jones, A. R.*; Lennox, B.*; Joyce, M. J.*; Okumura, Keisuke; Katakura, Junichi*

原子炉格納容器内の燃料デブリ探査技術に係る技術開発の一環として、燃料デブリの分布及び表面状態を調査するための遠隔水中ロボット(ROV)の実証試験を日本原子力研究開発機構・楢葉遠隔技術開発センターの試験用水槽及び、スロベニアのJozef Stefan InstituteのTRIGA Mark II研究炉で実施した。実証試験では、音響探査装置との連携、ロボットの測位システムの性能、原子炉プールでの動作を確認し、性状模擬デブリの形状の3D画像表示ができることを示した。

As a part of technology development related to fuel debris exploration technology in the reactor containment vessel, demonstration tests of an remotely operated vehicle (ROV) for investigating the distribution and surface condition of submerged fuel debris were carried out by using the test water tank of Naraha Remote Technology Development Center of Japan Atomic Energy Agency and using the TRIGA Mark II research reactor of Jozef Stefan Institute of Slovenia. In the demonstration test, we confirmed the cooperation with the acoustic exploration device, the performance of the ROV positioning system, the operation in the reactor pool, and showed that it is possible to display 3D image of the shape of simulated fuel debris.

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