NUCLEAR TECHNIQUES, Volume. 47, Issue 2, 020606(2024)

Characteristics of transuranic nuclides incinerated in a small modular chloride fast reactor

Minyu PENG1,2, Yafen LIU1,2、*, Yang ZOU1,2、**, and Ye DAI1
Author Affiliations
  • 1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
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    Figures & Tables(19)
    Microscopic absorption cross-sections of different nuclides
    Neutron absorption cross-sections of 35Cl and 37Cl
    Variation of keff with the enrichment of 37Cl
    Layout of sm-MCFR reactor body system
    Flow chart of TMCBurnup program
    keff versus time while maintaining the mass conservation of heavy metals
    (a) Energy spectra of TRU+Th at its inception and at the 40th year, (b) Energy spectra of TRU+DU at its inception and at the 40th year
    Neutron absorption cross-sections of 240Pu and 242Pu
    Core nuclides mass changes over time when fuel salt is TRU+Th(a) Variation in Pu isotope mass, (b) Variation in U isotope mass, (c) Variation in MA nuclide mass
    Diagram of TRU reaction paths in the reactor
    Core nuclides mass changes over time when fuel salt is TRU+DU(a) Variation in Pu isotope mass, (b) Variation in U isotope mass, (c) Variation in MA nuclide mass
    Changes in transmutation rate under two different fuel conditions
    • Table 1. Carrier salt property parameters

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      Table 1. Carrier salt property parameters

      载体盐

      Carrier salt

      熔点

      Melting point / ℃

      沸点

      Boiling point / ℃

      导热率

      Thermal conductivity

      热熔

      Heat capacity

      NaCl8001 4133.631 146
      LiCl6101 3826.441 580
      MgCl27141 4121.121 056
      KCl7701 4202.20899
    • Table 2. TZM alloy composition

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      Table 2. TZM alloy composition

      成分

      Composition

      TiZrCSiFeNiNMo

      含量

      Content / wt%

      0.50.080.030.0060.010.0050.0030.366
    • Table 3. Main parameters of sm-MCFR

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      Table 3. Main parameters of sm-MCFR

      参数Parameters值Values
      功率Power / MW50
      反应堆半径/高度Reactor radius/height / cm50/100
      径向反射层厚度Radial reflector thickness / cm50
      轴向反射层厚度Axial reflector thickness / cm45
      冷却剂CoolantS-CO2
      冷却剂管道材料Coolant piping materialTZM
      冷却剂管道厚度Coolant pipe thickness / cm0.10
      冷却剂管道内径Inside diameter of coolant pipe / cm0.47
    • Table 4. Composition of TRU

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      Table 4. Composition of TRU

      核素Nuclide份额Proportion / mol%
      237Np6.3
      238Pu2.7
      239Pu45.9
      240Pu21.5
      241Pu10.7
      242Pu6.7
      241Am3.4
      243Am1.9
      244Cm0.8
      245Cm0.1
    • Table 5. Critical parameters of two fuel salt components

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      Table 5. Critical parameters of two fuel salt components

      燃料盐组分

      Fuel salt component / mol%

      添料类型

      Feeding type

      初始keff

      Initial keff

      55NaCl-11TRUCl3-34ThCl3TRU1.003
      55NaCl-9TRUCl3-36DUCl3TRU1.008
    • Table 6. Variation of fuel quality in the reactor

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      Table 6. Variation of fuel quality in the reactor

      燃料组成Fuel compositionTRU+ThTRU+DU
      初始TRU装载量Initial load of TRU / kg387334
      40年一共添加的TRU质量Total TRU mass added over 40 years / kg908896
      40年时堆芯中剩余TRU质量Mass of TRU remaining in the core at 40 years / kg657725
      40年一共消耗掉的TRU质量40 years of TRU mass consumed / kg638505
      初始232Th装载量Initial load of 232Th / kg1 159
      40年时232Th剩余量232Th surplus at 40 years / kg919
      初始DU装载量Initial load of DU / kg1 329
      40年时DU剩余量DU surplus at 40 years / kg1 056
    • Table 7. Temperature reactivity coefficients

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      Table 7. Temperature reactivity coefficients

      燃料组成

      Fuel composition

      温度反应性系数

      Temperature reactivity coefficient

      / 10-5 K-1

      TRU+DU-2.13
      TRU+Th-1.83
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    Minyu PENG, Yafen LIU, Yang ZOU, Ye DAI. Characteristics of transuranic nuclides incinerated in a small modular chloride fast reactor[J]. NUCLEAR TECHNIQUES, 2024, 47(2): 020606

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    Paper Information

    Category: Research Articles

    Received: Sep. 25, 2023

    Accepted: --

    Published Online: Apr. 24, 2024

    The Author Email: LIU Yafen (刘亚芬), ZOU Yang (邹杨)

    DOI:10.11889/j.0253-3219.2024.hjs.47.020606

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