On the use of moderating material to enhance the feedback coefficients in SFR cores with high minor actinide content


On the use of moderating material to enhance the feedback coefficients in SFR cores with high minor actinide content

Merk, B.; Weiß, F.-P.

The use of fine distributed moderating material to enhance the feedback effects and to reduce the sodium void effect is described. The consequences of the introduction of fine distributed moderating material into fuel assemblies with fuel configurations foreseen for minor actinide transmutation is analyzed. The degradation of the feedback effects due to the insertion of minor actinides and the compensation by the use of moderating materials is discussed.

Keywords: Sodium void effect; SFR; Fast reactor; Zirconium hydride; designable feedback coefficient; transmutation

  • Contribution to proceedings
    International Congress on Advances in Nuclear Power Plants (ICAPP'12), 24.-28.06.2012, Chicago, USA
  • Lecture (Conference)
    International Congress on Advances in Nuclear Power Plants (ICAPP'12), 24.-28.06.2012, Chicago, USA

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