SM-2 Critical Experiments : CE-1

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Abstract: Critical experiment studies were performed, varying the parameters U235, B10 and metal to water ratio, in the SM-2 7 x 7 core configuration with 38 stationary elements and seven control rods of the SM-1 (APPR-1) type. An experimental mock-up of the SM-1 was assembled using the basic SM-2 fuel plates. Excellent agreement between the SM-1 boron loading, determined by chemical analysis, and the SM-1 mock-up boron loading, for equivalent bank positions, was noted. Several SM-2 mock-ups, cold clean and midlife, were assembled and studied with regard to reflector effects, flow divider effects, relative control rod array worths, critical rod … continued below

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xvi, 177 pages ; illustrations.

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Noaks, J. W.; McCool, W. J.; Robinson, R. A.; Schrader, E. W. & Weiss, S. H. November 30, 1959.

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Abstract: Critical experiment studies were performed, varying the parameters U235, B10 and metal to water ratio, in the SM-2 7 x 7 core configuration with 38 stationary elements and seven control rods of the SM-1 (APPR-1) type. An experimental mock-up of the SM-1 was assembled using the basic SM-2 fuel plates. Excellent agreement between the SM-1 boron loading, determined by chemical analysis, and the SM-1 mock-up boron loading, for equivalent bank positions, was noted. Several SM-2 mock-ups, cold clean and midlife, were assembled and studied with regard to reflector effects, flow divider effects, relative control rod array worths, critical rod configurations, and relative power distributions. The results of these experiments indicate as satisfactory a U235 loading of 36.4 Kg and a B10 loading of 63.4 grams for the SM-2. Attention is drawn to numerous power peaks present in the active core. The open seven control rod array has a slight reactivity advantage over the closed seven array and consequent minor disadvantage with respect to "stuck rod" criteria.

Physical Description

xvi, 177 pages ; illustrations.

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Digitized from microopaque cards.

Contract No. AT(30-3)-326 with the U.S. Atomic Energy Commission, New York Operations Office.

Includes bibliographic references (page 177).

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  • Report No.: APAE-54
  • Grant Number: AT(30-3)-326
  • SuDoc Number: Y 3.AT 7:22/APAE-54
  • Accession or Local Control No: metadc1201953
  • Archival Resource Key: ark:/67531/metadc1201953

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Technical Report Archive and Image Library

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  • November 30, 1959

Added to The UNT Digital Library

  • Aug. 15, 2019, 10:26 p.m.

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  • April 23, 2020, 6:02 p.m.

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Noaks, J. W.; McCool, W. J.; Robinson, R. A.; Schrader, E. W. & Weiss, S. H. SM-2 Critical Experiments : CE-1, report, November 30, 1959; Schenectady, New York.. (https://digital.library.unt.edu/ark:/67531/metadc1201953/: accessed June 12, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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