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Title: Availability Considerations in the Design of K-DEMO

A DEMO device has been considered the next step following ITER as a near-term prototypical reactor design that is tritium self-sufficient and produces a limited amount of net electricity. The machine maintenance approach and planned configuration concept plays a major role in establishing the design point. DEMO will also need to show that adequate operating availability can be achieved over a reasonable time period, as a last step before full-scale electricity production. The ability to operate with high availability/reliability plays a key ingredient in defining the DEMO configuration, fostering the need for rapid removal/replacement of limited-life in-vessel components. DEMO pre-conceptual studies are being carried out by South Korea (with US participation) and other countries. The device designs span a range of maintenance approaches from full radial extraction of large in-vessel modules through all TF horizontal openings to vertical maintenance of segmented in-vessel components. Progress made on the S. Korea's K-DEMO design will be provided with emphasis on the design choices identified to promote high availability.
 [1] ;  [2] ;  [1] ;  [2] ;  [1] ;  [2] ;  [1]
  1. PPPL
  2. NFRI, Korea
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Journal Name: 25th IAEA Fusion Energy Conference Proceedings [FIP/P7-1] on IAEA Physics website; Conference: 25th IAEA Fusion Energy Conference, St. Petersburg, Russia, 13-18 October 2014.
Research Org:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
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Contributing Orgs:
Princeton Plasma Physics Laboratory, Princeton, NJ 08543 U.S.A.; National Fusion Research Institute, Daejeon 305-333, the Republic of Korea
Country of Publication:
United States
70 PLASMA PHYSICS AND FUSION TECHNOLOGY Power Plants; Tokamaks; Fusion Power; Fusion Reactors, Design