Effect of high aspect ratio on ITER maintenance design

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The International Thermonuclear Experimental Reactor (ITER) baseline machine configuration and auxiliary systems design specify maintainability and repairability as fundamental requirements. Two important maintenance requirements for ITER are a device that is fully remotely maintainable, with the provision for hands-on maintenance wherever possible, and the ability to maintain components with short lives or high failure rates without moving other components or disturbing the machine's internal or external environment. Some of the maintenance tasks are accomplished through the use of specialized remote maintenance equipment that will perform crucial in-vessel and ex-vessel operations. In-vessel maintenance will be performed with a combination of horizontal ... continued below

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Pages: (6 p)

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Herrick, T.J.; Davis, F.C.; Hollis, M.J. & Lousteau, D.C. January 1, 1991.

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The International Thermonuclear Experimental Reactor (ITER) baseline machine configuration and auxiliary systems design specify maintainability and repairability as fundamental requirements. Two important maintenance requirements for ITER are a device that is fully remotely maintainable, with the provision for hands-on maintenance wherever possible, and the ability to maintain components with short lives or high failure rates without moving other components or disturbing the machine's internal or external environment. Some of the maintenance tasks are accomplished through the use of specialized remote maintenance equipment that will perform crucial in-vessel and ex-vessel operations. In-vessel maintenance will be performed with a combination of horizontal and vertical access. Since the completion of the Conceptual Design Activity (CDA), systems studies by the US ITER design team have pointed to the possible benefits of a high aspect ratio design (HARD). The alternative HARD has been shown to have better performance characteristics than the present baseline. The HARD machine configuration modified in size a number of major components that must be remotely maintained or replaced. This required reevaluation of the maintenance scenarios of these components with respect to changes in physical accessibility, assembly and disassembly, and remote maintenance equipment. The CDA baseline design and HARD are compared from an assembly and maintenance feasibility perspective for some critical operations. 1 ref., 6 figs.

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Pages: (6 p)

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OSTI; NTIS; INIS; GPO Dep.

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  • 14. IEEE symposium on fusion engineering, San Diego, CA (United States), 30 Sep - 3 Oct 1991

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  • Other: DE92002319
  • Report No.: CONF-910968-34
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 5002720
  • Archival Resource Key: ark:/67531/metadc1058918

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • January 1, 1991

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

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  • Feb. 1, 2018, 6:16 p.m.

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Herrick, T.J.; Davis, F.C.; Hollis, M.J. & Lousteau, D.C. Effect of high aspect ratio on ITER maintenance design, article, January 1, 1991; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1058918/: accessed November 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.