Alterative LEU designs for the FRM-II with power levels of 20-22 MW.

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Alternative LEU Designs for the FRM-II have been developed by the RERTR Program at Argonne National Laboratory (ANL) at the request of an FRM-II Expert Group established by the German Federal Government in January 1999 to evaluate the options for using LEU fuel instead of HEU fuel in cores with power levels of 20 MW. The ANL designs would use the same building structure and maintain as many of the HEU design features as practical. The range of potential LEU fuels was expanded from previous studies to include already-tested silicide fuels with uranium densities up to 6.7 g/cm{sup 3} and ... continued below

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15 p.

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Hanan, N. A.; Smith, R. S. & Matos, J. E. September 27, 1999.

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Alternative LEU Designs for the FRM-II have been developed by the RERTR Program at Argonne National Laboratory (ANL) at the request of an FRM-II Expert Group established by the German Federal Government in January 1999 to evaluate the options for using LEU fuel instead of HEU fuel in cores with power levels of 20 MW. The ANL designs would use the same building structure and maintain as many of the HEU design features as practical. The range of potential LEU fuels was expanded from previous studies to include already-tested silicide fuels with uranium densities up to 6.7 g/cm{sup 3} and the new U-Mo fuels that show excellent prospects for achieving uranium densities in the 8-9 g/cm{sup 3} range. For each of the LEU cores; the design parameters were chosen to match the 50 day cycle length of the HEU core and to maximize the thermal neutron flux in the Cold Neutron Source and beam tubes. The studies concluded that an LEU core with a diameter of about 29 cm instead of 24 cm in HEU design and operating at a power level of 20 MW would have thermal neutron fluxes that are 0.85 times that of the HEU design at the center of the Cold Neutron Source. With a potential future upgrade to a power of 22 MW, this ratio would increase to 0.93.

Physical Description

15 p.

Notes

INIS; OSTI as DE00750514

Medium: P; Size: 15 pages

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  • 1999 International Meeting on Reduced Enrichment for Research and Test Reactors, Budapest (HU), 10/03/1999--10/08/1999

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  • Report No.: ANL/TD/CP-100109
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 750514
  • Archival Resource Key: ark:/67531/metadc707302

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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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  • September 27, 1999

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 7, 2017, 2:56 p.m.

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Hanan, N. A.; Smith, R. S. & Matos, J. E. Alterative LEU designs for the FRM-II with power levels of 20-22 MW., article, September 27, 1999; Illinois. (digital.library.unt.edu/ark:/67531/metadc707302/: accessed December 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.