Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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The maintenance record of the KSTAR helium refrigeration system

  • Moon, K.M. (National Fusion Research Institute) ;
  • Joo, J.J. (National Fusion Research Institute) ;
  • Kim, N.W. (National Fusion Research Institute) ;
  • Chang, Y.B. (National Fusion Research Institute) ;
  • Park, D.S. (National Fusion Research Institute) ;
  • Kwag, S.W. (National Fusion Research Institute) ;
  • Song, N.H. (National Fusion Research Institute) ;
  • Lee, H.J. (National Fusion Research Institute) ;
  • Lee, Y.J. (National Fusion Research Institute) ;
  • Park, Y.M. (National Fusion Research Institute) ;
  • Yang, H.L. (National Fusion Research Institute) ;
  • Oh, Y.K. (National Fusion Research Institute)
  • Received : 2013.11.22
  • Accepted : 2013.12.19
  • Published : 2013.12.31
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Abstract

Korea Superconducting Tokamak Advanced Research (KSTAR) has a helium refrigeration system (HRS) with the cooling capacity of 9 kW at 4.5 K. Main cold components are composed of 300 tons of superconducting (SC) magnets, main cryostat thermal shields, and SC current feeder system. The HRS comprises six gas storage tanks, a liquid nitrogen tank, the room temperature compression sector, the cold box (C/B), the 1st stage helium distribution box (DB#1), the PLC base local control system interconnected to central control tower and so on. Between HRS and cold components, there's another distribution box (DB#2) nearby the KSTAR device. The entire KSTAR device was constructed in 2007 and has been operated since 2008. This paper will present the maintenance result of the KSTAR HRS during the campaign and discuss the operation record and maintenance history of the KSTAR HRS.

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References

  1. Fauve, E. et. al.: Design, construction and performances of the KSTAR Helium Refrigeration System. Proc. of ICEC22-ICMC2008, 637-642, 2008.
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  3. Joo, J.-J. et. al.: Maintenance Result of the WCS Motors. Internal Report of the National Fusion Research Institute, 2013.
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