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Out-of-Pile Properties Investigation of UO2-BeO Fuel Pellet

[+] Author Affiliations
Jiwei Li, Yang Ding, Guangwen Bi, Qin Zhou

Shanghai Nuclear Engineering Research and Design Institute, Shanghai, China

Wentao Liu, Ruirui Zhao

China North Nuclear Fuel Co., Ltd, Baotou, China

Paper No. ICONE25-66585, pp. V003T02A019; 6 pages
  • 2017 25th International Conference on Nuclear Engineering
  • Volume 3: Nuclear Fuel and Material, Reactor Physics and Transport Theory; Innovative Nuclear Power Plant Design and New Technology Application
  • Shanghai, China, July 2–6, 2017
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5781-6
  • Copyright © 2017 by ASME


In order to increasing the thermal conductivity of fuel pellet used in nuclear power plants, a UO2-BeO composite fuel was developed. The fuel pellets with different beryllia addition were manufactured by sintering and the physical properties were tested and compared with uranium dioxide fuel. The metallograph show that the continuous phase of beryllia was formed. The results show that the thermal conductivity was obviously larger and the elasticity modulus and the coefficient of thermal expansion were a little smaller than uranium dioxide. The thermal conductivity and the elasticity modulus were increased and the coefficient of thermal expansion was decreased by increasing the ratio of beryllia contents.

Copyright © 2017 by ASME
Topics: Fuels



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