Critical power performance of tight lattice bundle

Yasushi Yamamoto*, Kouji Hiraiwa, Shinichi Morooka, Nobuaki Abe

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


An innovative fuel cycle system concept named BARS (BWR with an Advanced Recycle System) has been proposed as a future fuel cycle option aiming at enhanced utilization of uranium resources and reduction of radioactive wastes. In BARS, the spent fuel from conventional light water reactors (LWRs) is recycled as a mixed oxide (MOX) fuel for a BWR core with the fast neutron spectrum by means of oxide dry-processing and vibro-packing fuel fabrication. The fast neutron spectrum is obtained by means of triangular tight fuel lattice. Further study on BARS, especially on tight lattice MOX fuel, has been initiated as a joint study by Toshiba and Gifu University. The objective of this paper is to show the latest progress of the study on BARS, especially concerning the thermal-hydraulics measurements for tight lattice bundle.

Original languageEnglish
Pages (from-to)344-350
Number of pages7
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Issue number2
Publication statusPublished - 2004 May
Externally publishedYes


  • Advanced recycle system
  • Boiling
  • BWR
  • Critical power
  • Heat transfer
  • Multi-phase flow
  • Nuclear reactor
  • Power plant
  • Tight lattice

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Fluid Flow and Transfer Processes


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