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New achievements of the Divertor Test Platform programme for the ITER divertor remote maintenance R&D

C Damiani, L Baldi, L Galbiati, M Irving, N Takeda2001年Fusion Engineering and DesignIF 1.7出版社

AbstractThe divertor assembly for the ITER fusion reactor consists of a number of rail mounted cassettes (54 now in ITER FEAT) located in the bottom region of the vacuum vessel. These cassettes shall be removed/installed remotely during the life of the reactor by means of specific devices. To demonstrate and optimise the feasibility of the in-vessel maintenance process the Divertor Test Platform (DTP) has been established at the ENEA Research Centre in Brasimone, Italy, as a major part of the large ITER R&D project L7. A first set of tests has been already carried out and reported during 1998, when the basic feasibility of the divertor replacement was demonstrated. In the present period (January 1999–July 2000), new activities, including both site tests and other “external” R&D works, have been carried out in order to refine and improve the ITER divertor maintenance scenario. These include the study of abnormal maintenance operations and of possible handling equipment failure and its consequences; the procurement and testing of new sub-systems (e.g. a force reflection manipulator arm), and the development of remote handling techniques including a virtual reality system. Following a short description of the DTP, this paper reports on the new results and achievements, draws the relevant conclusions, and finally discusses future activities.

日本語訳

ITER核融合炉用ダイバータ組立品は、真空容器底部に位置する多数のレール搭載カセット(現在ITER FEATでは54基)から構成される。これらのカセットは、炉の寿命期間中、専用装置によって遠隔で取り外し・据え付けが行われる。炉内保守プロセスの実現可能性を実証・最適化するため、イタリアのブラジモーネにあるENEA研究センターに、大規模ITER研究開発プロジェクトL7の主要部分としてダイバータ試験プラットフォーム(DTP)が設置された。最初の一連の試験はすでに1998年に実施・報告されており、その際にダイバータ交換の基本的実現可能性が実証された。現在の期間(1999年1月~2000年7月)には、ITERダイバータ保守シナリオを洗練・改善するために、サイト試験とその他の「外部」研究開発作業の両方を含む新たな活動が実施された。これらには、異常な保守作業および起こり得るハンドリング機器の故障とその影響の研究、新しいサブシステム(例:力反射マニピュレータアーム)の調達と試験、ならびに仮想現実システムを含む遠隔操作技術の開発が含まれる。DTPの簡単な説明に続き、本論文では新しい結果と成果を報告し、関連する結論を導き出し、最後に今後の活動について考察する。

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