Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Transient safety analysis of M2LFR-1000 reactor using ATHLET

  • Shen, Chong (Department of Engineering and Applied Physics, University of Science and Technology of China) ;
  • Zhang, Xilin (Department of Engineering and Applied Physics, University of Science and Technology of China) ;
  • Wang, Chi (Department of Engineering and Applied Physics, University of Science and Technology of China) ;
  • Cao, Liankai (Department of Engineering and Applied Physics, University of Science and Technology of China) ;
  • Chen, Hongli (Department of Engineering and Applied Physics, University of Science and Technology of China)
  • Received : 2018.02.27
  • Accepted : 2018.08.29
  • Published : 2019.02.25
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Abstract

$M^2LFR-1000$ is a medium-power modular lead-cooled fast reactor, developed by University of Science and Technology of China (USTC), aiming at achieving a reactor design fulfilling the Gen IV nuclear system requirements and meanwhile emphasizing the optimum safety and economics. In order to evaluate the safety performance of $M^2LFR-1000$ reactor core, three typical transients are selected from initiating events, which are unprotected transient overpower (UTOP), unprotected loss of offsite power (ULOHS+ULOF) and increase of feedwater flowrate with primary pumps trip (IFW+PLOF). These three transients presented and discussed in this paper are performed with the code Analysis of THermal-hydraulics of LEaks and Transients (ATHLET), which is developed by Gesellschaft $f{\ddot{u}}r$ Anlagen-und Reaktorsicherheit gGmbH (GRS). The results indicate that the $M^2LFR$ is safe enough under these three transients due to the good inherent safety features of the reactor, without human intervention, the reactor will reach a new steady state under UTOP condition.

Keywords

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