Comparison of the FRM-II HEU design with an alternative LEU design

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The FRM-II reactor design of the Technical University of Munich has a compact core that utilizes fuel plates containing highly-enriched uranium (HEU, 93%). This paper presents an alternative core design utilizing low-enriched uranium (LEU, <20%) silicide fuel with 4.8 g/cm{sup 3} that provides nearly the same neutron flux for experiments as the HEU design, but has a less favorable fuel cycle economy. If an LEU fuel with a uranium density of 6.0 - 6.5 g/cm{sup 3} were developed, the alternative design would provide the same neutron flux and use the same number of cores per year as the HEU design. ... continued below

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10 p.

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Mo, S.C.; Hanan, N.A. & Matos, J.E. December 1, 1995.

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The FRM-II reactor design of the Technical University of Munich has a compact core that utilizes fuel plates containing highly-enriched uranium (HEU, 93%). This paper presents an alternative core design utilizing low-enriched uranium (LEU, <20%) silicide fuel with 4.8 g/cm{sup 3} that provides nearly the same neutron flux for experiments as the HEU design, but has a less favorable fuel cycle economy. If an LEU fuel with a uranium density of 6.0 - 6.5 g/cm{sup 3} were developed, the alternative design would provide the same neutron flux and use the same number of cores per year as the HEU design. The results of this study show that there are attractive possibilities for using LEU fuel instead of HEU fuel in the FRM-II. Further optimization of the LEU design and near-term availability of LEU fuel with a uranium density greater than 4.8 g/cm{sup 3} would enhance the performance of the LEU core. The RERTR Program is ready to exchange information with the Technical University of Munich to resolve any differences that may exist and to identify design modifications that would optimize reactor performance utilizing LEU fuel.

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10 p.

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INIS; OSTI as DE96002765

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  • 18. international meeting on reduced enrichment for research and test reactors, Paris (France), 18-21 Sep 1995

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  • Other: DE96002765
  • Report No.: ANL/TD/CP--88127
  • Report No.: CONF-9509253--4
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 146782
  • Archival Resource Key: ark:/67531/metadc621894

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • December 1, 1995

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  • June 16, 2015, 7:43 a.m.

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  • Dec. 14, 2015, 12:09 p.m.

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Mo, S.C.; Hanan, N.A. & Matos, J.E. Comparison of the FRM-II HEU design with an alternative LEU design, article, December 1, 1995; Illinois. (digital.library.unt.edu/ark:/67531/metadc621894/: accessed October 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.