Nuclear Engineering and Technology

  • 제53권7호
  • /
  • Pages.2095-2103
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  • 2021
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Neutronics study on small power ADS loaded with recycled inert matrix fuel for transuranic elements transmutation using Serpent code

  • Vu, Thanh Mai (VNU University of Science, Vietnam National University) ;
  • Hartanto, Donny (Department of Mechanical and Nuclear Engineering, University of Sharjah) ;
  • Ha, Pham Nhu Viet (c Institute for Nuclear Science and Technology, Vietnam Atomic Energy Institute)
  • 투고 : 2020.07.24
  • 심사 : 2021.01.04
  • 발행 : 2021.07.25
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초록

A small power ADS design using thorium oxide and diluent matrix reprocessed fuel is proposed for a high transmutation rate, small reactivity swing, and strong safety features. Two fuel matrices (CERCER and CERMET) and different recycled fuel compositions recovered from UO2 spent fuels with 45 GWd/tU and 60 GWd/tU burnup were investigated to determine the suitable fuel for the ADS. It was found that the transmutation of each isotope depends on TRU initial loading amount. After examining the cores, the results show that CERCER fueled ADS has a negative coolant void reactivity (CVR) and a smaller radiotoxicity at discharge compared to that of CERMET core. It implies that CERCER fuel has enhanced safety features and more flavor in terms of radiotoxicity management. To increase fuel utilization and core operation efficiency, a simple assembly shuffling pattern for the CERCER fueled ADS is also proposed. Eigenvalue and burnup calculations were conducted using Serpent 2 with ENDF/B-VII.0 library in both kcode and external source modes, and it indicates that the results of transmutation analyses obtained by kcode only is reliable to discuss the transmutation potential of ADS. Burnup calculation with the fixed-source mode is essential to be used for more practical results of the transmutation by ADS.

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과제정보

This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 103.04-2019.14.

참고문헌

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  14. Thanh Mai Vu et al., Comparison of reactivity calculations by Serpent and MCNP6 code on the CERMET fueled ADS, VNU Journal of Science Mathematics - Physics (accepted).

피인용 문헌

  1. Sensitivity and uncertainty analysis of neutronic and kinetic parameters for CERCER and CERMET fueled ADS using SERPENT 2 and ENDF/B-VIII.0 vol.168, 2022, https://doi.org/10.1016/j.anucene.2021.108912