Theory of Asymmetric Arrays of Control Rods in Nuclear Reactors

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Introduction: Seldom does the actual arrangement of control elements in a nuclear reactor confers to the ideal and convenient mathematical array. In order to achieve shim control. safety and regulation, it is desirable to design with rods of different sizes and materials. With given fuel element arrangement, typically in square or hexagonal lattice spacing, there will be rods located at different distances form the center of the core and from each other. As the reactor operates, absorbers will be withdrawn, leaving further asymmetries in the location of those remaining. It is the purpose of this report to develop in detail … continued below

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v, 47 pages ; illustrations.

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Murray, Raymond L. April 25, 1959.

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Introduction: Seldom does the actual arrangement of control elements in a nuclear reactor confers to the ideal and convenient mathematical array. In order to achieve shim control. safety and regulation, it is desirable to design with rods of different sizes and materials. With given fuel element arrangement, typically in square or hexagonal lattice spacing, there will be rods located at different distances form the center of the core and from each other. As the reactor operates, absorbers will be withdrawn, leaving further asymmetries in the location of those remaining. It is the purpose of this report to develop in detail a two-group diffusion theory with as complete generality as possible. The method is as yet restricted to the unreflected core, or to the reflected core by use of reflector savings and bare equivalent geometries.

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v, 47 pages ; illustrations.

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Digitized from microopaque cards.

Contract No. AT(30-1)-326.

Includes bibliographical references (pages 44-45).

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  • Report No.: APAE-48
  • Grant Number: AT(30-1)-326
  • SuDoc Number: Y 3.AT 7:22/APAE-48
  • Accession or Local Control No: metadc1201950
  • Archival Resource Key: ark:/67531/metadc1201950

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Technical Report Archive and Image Library

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Imaged from microcard, these technical reports describe research performed for U.S. government agencies from the 1930s to the 1960s. The reports were provided by the Technical Report Archive and Image Library (TRAIL).

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  • April 25, 1959

Added to The UNT Digital Library

  • Aug. 15, 2019, 10:26 p.m.

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  • April 24, 2020, 1:34 p.m.

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Murray, Raymond L. Theory of Asymmetric Arrays of Control Rods in Nuclear Reactors, report, April 25, 1959; Schenectady, New York. (https://digital.library.unt.edu/ark:/67531/metadc1201950/: accessed October 15, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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