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Evaluation of Thermal Properties of Thoria–Urania Fuel

  • Joydipta BanerjeeEmail author
  • Santu Kaity
  • Koushik Bhandari
  • Arun Kumar
  • Srikumar Banerjee
Conference paper

Abstract

Thoria–urania (ThO2–UO2)-based fuel system is the proposed fuel for the Advanced Heavy Water Reactor (AHWR) in India. As a part of thoria-based fuel development for India’s nuclear power programme, thoria–urania (ThO2–UO2) solid solutions were prepared by Coated Agglomerate Pelletization (CAP) process which has many advantages over conventional powder pellet route for handling 233U powders. Five compositions, namely ThO2, ThO2–4%UO2, ThO2–10%UO2, ThO2–20%UO2 and UO2 (all compositions are in wt%) were prepared and used in this study. Characterization of thoria–urania fuel was carried out in terms of both thermal expansion and hardness at elevated temperature (hot hardness). The data obtained on thermal expansion were compared with those available in the literature data and presented in the temperature range of 300–1800 K. It was found to be in good agreement with the reported data of other authors. The data on hot hardness of thoria–urania fuel are sparse and are presented here as a function of temperature from 300 to 1573 K. The experimental data on both thermal expansion and hot hardness for all the compositions were least squares fitted and analytical expressions obtained are presented as recommended data. The trend obtained for the above data in terms of both as a function of temperature and composition are critically evaluated and discussed.

Keywords

Thoria–urania Fuel Solid solutions Thermal expansion Hot hardness 

Notes

Acknowledgements

We are thankful to Advanced Fuel Fabrication Facility (AFFF), Bhabha Atomic Research Centre (BARC), Tarapur, India, for providing the thoria, urania and thoria–urania pellets used in this study.

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Joydipta Banerjee
    • 1
    Email author
  • Santu Kaity
    • 1
  • Koushik Bhandari
    • 1
  • Arun Kumar
    • 2
  • Srikumar Banerjee
    • 2
  1. 1.Radiometallurgy DivisionBhabha Atomic Research CentreMumbaiIndia
  2. 2.Bhabha Atomic Research CentreMumbaiIndia

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