A neutronics feasibility study for the LEU conversion of Poland's Maria research reactor.

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The MARIA reactor is a high-flux multipurpose research reactor which is water-cooled and moderated with both beryllium and water. Standard HEU (80% {sup 235}U)fuel assemblies consist of six concentric fuel tubes of a U-Al alloy clad in aluminum. Although the inventory of HEU (80%) fuel is nearly exhausted, a supply of highly-loaded 36%-enriched fuel assemblies is available at the reactor site. Neutronic equilibrium studies have been made to determine the relative performance of fuels with enrichments of 80%, 36% and 19.7%. These studies indicate that LEU (19.7%) densities of about 2.5 gU/cm{sup 3} and 3.8 gU/cm{sup 3} are required to ... continued below

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12 p.

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Bretscher, M. M. October 14, 1998.

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Description

The MARIA reactor is a high-flux multipurpose research reactor which is water-cooled and moderated with both beryllium and water. Standard HEU (80% {sup 235}U)fuel assemblies consist of six concentric fuel tubes of a U-Al alloy clad in aluminum. Although the inventory of HEU (80%) fuel is nearly exhausted, a supply of highly-loaded 36%-enriched fuel assemblies is available at the reactor site. Neutronic equilibrium studies have been made to determine the relative performance of fuels with enrichments of 80%, 36% and 19.7%. These studies indicate that LEU (19.7%) densities of about 2.5 gU/cm{sup 3} and 3.8 gU/cm{sup 3} are required to match the performance of the MARIA reactor with 80%-enriched and with 36%-enriched fuels, respectively.

Physical Description

12 p.

Notes

INIS; OSTI as DE00011047

Medium: P; Size: 12 pages

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  • 21st International Meeting on Reduced Enrichment for Research and Test Reactors, Sao Paulo (BR), 10/18/1998--10/23/1998

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  • Report No.: ANL/TD/CP-97463
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 11047
  • Archival Resource Key: ark:/67531/metadc624487

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  • October 14, 1998

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  • June 16, 2015, 7:43 a.m.

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  • April 6, 2017, 8:05 p.m.

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Bretscher, M. M. A neutronics feasibility study for the LEU conversion of Poland's Maria research reactor., article, October 14, 1998; Illinois. (digital.library.unt.edu/ark:/67531/metadc624487/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.