Fuel Programming for Sodium Graphite Reactors

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Description

The effect of fuel programming, i.e., the scheme used for changing fuel in a core, on the reactivity and specific power of a sodium graphite reactor is discussed Fuel programs considered Include replacing fuel a core-load at a time or a radial zone at a time, replacing fuel to manutain the same average exposure of fuel elements throughout the core, and replacing and transferring fuel elements to maintain more highly exposed fuel in the center or at the periphery of the core. Flux and criticality calculations show the degree of power flattening and the concurrent decrease in effective multiplication which ... continued below

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Pages: 34

Creation Information

Connolly, T.J. October 15, 1959.

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Description

The effect of fuel programming, i.e., the scheme used for changing fuel in a core, on the reactivity and specific power of a sodium graphite reactor is discussed Fuel programs considered Include replacing fuel a core-load at a time or a radial zone at a time, replacing fuel to manutain the same average exposure of fuel elements throughout the core, and replacing and transferring fuel elements to maintain more highly exposed fuel in the center or at the periphery of the core. Flux and criticality calculations show the degree of power flattening and the concurrent decrease in effective multiplication which results from maintaining more exposed fuel toward the core center. Corverse effects are shown for the case of maintaining more exposed fuel near the core periphery. The excess reactivity which must be controlled in the various programs is considered. Illustrative schedules for implementing each of these programs in an SGR are presented. (auth)

Physical Description

Pages: 34

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  • Other Information: Orig. Receipt Date: 31-DEC-60

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  • Report No.: NAA-SR-4040
  • Grant Number: AT-11-1-GEN-8
  • DOI: 10.2172/4233097 | External Link
  • Office of Scientific & Technical Information Report Number: 4233097
  • Archival Resource Key: ark:/67531/metadc1024269

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • October 15, 1959

Added to The UNT Digital Library

  • Oct. 15, 2017, 10:09 p.m.

Description Last Updated

  • Jan. 22, 2018, 11:25 a.m.

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Connolly, T.J. Fuel Programming for Sodium Graphite Reactors, report, October 15, 1959; Canoga Park, California. (digital.library.unt.edu/ark:/67531/metadc1024269/: accessed September 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.