GAMMA AND BETA HEAT GENERATION RATES IN THE HFIR CORE

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A calculation was made to determine the fuel plate heat fluxes resulting from after shutdown fission product heating. Fission product source strengths were obtained via the IBM Internuc code. Slab geometry was assumed. The results indicated that the maximum heat flux would occur slightly inboard of the center of the fuel annulus, with the heat flux at the inner annulus radius running about 8% below the maximum, and the outer radius heat flux 10% below the maximum. For decay times of 1.0, 10, 10/sup 2/, 10/sup 3/, 10/sup 4/, and 10/sup 5/ seconds the maximum calculated fuel plate heat fluxes ... continued below

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15 p.

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Hilvety, N. April 29, 1960.

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Description

A calculation was made to determine the fuel plate heat fluxes resulting from after shutdown fission product heating. Fission product source strengths were obtained via the IBM Internuc code. Slab geometry was assumed. The results indicated that the maximum heat flux would occur slightly inboard of the center of the fuel annulus, with the heat flux at the inner annulus radius running about 8% below the maximum, and the outer radius heat flux 10% below the maximum. For decay times of 1.0, 10, 10/sup 2/, 10/sup 3/, 10/sup 4/, and 10/sup 5/ seconds the maximum calculated fuel plate heat fluxes were 42.0, 30.0, 18.0, 9.5, 4.0, and 1.3 x 10/sup 3/ Btu/hr-ft/sup 2/, respectively. The core coolant gamma heating rate during reactor operation was also calculated using the same techniques, but including the fission and capture gamma sources. Average coolant gamma heat generation rate was about 33 watts/cc at the start of the fuel cycle, and 57 watts/cc after the fission products built up. (auth)

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15 p.

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

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  • Report No.: CF-60-4-110
  • Grant Number: None
  • DOI: 10.2172/4152641 | External Link
  • Office of Scientific & Technical Information Report Number: 4152641
  • Archival Resource Key: ark:/67531/metadc866181

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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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Creation Date

  • April 29, 1960

Added to The UNT Digital Library

  • Sept. 16, 2016, 12:32 a.m.

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  • Oct. 12, 2017, 1:08 p.m.

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Hilvety, N. GAMMA AND BETA HEAT GENERATION RATES IN THE HFIR CORE, report, April 29, 1960; Tennessee. (digital.library.unt.edu/ark:/67531/metadc866181/: accessed November 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.