A Model for Fission-Gas Release From Porous Fuels in Low-Permeability Containers

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A simple mathematical model was developed to describe the steady-state release rate of gaseous fission products from porous ceramic fuels in low- permeability containers. The resulting equations are used to analyze experimental release rate results obtained from a UC/sub 2/-fueled graphite fuel body enclosed in a low-permeability impregnated graphite container. The relative release rates of the fission-product species Kr/sup 85m/, Kr/sup 88/, and Xe/sup 133/ were predicted with reasonable success. Absolute-rate predictions were not possible due to lack of information on true permeability and porosity profiles in the graphite container. (auth)

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15 pages

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Prados, John W. August 25, 1961.

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A simple mathematical model was developed to describe the steady-state release rate of gaseous fission products from porous ceramic fuels in low- permeability containers. The resulting equations are used to analyze experimental release rate results obtained from a UC/sub 2/-fueled graphite fuel body enclosed in a low-permeability impregnated graphite container. The relative release rates of the fission-product species Kr/sup 85m/, Kr/sup 88/, and Xe/sup 133/ were predicted with reasonable success. Absolute-rate predictions were not possible due to lack of information on true permeability and porosity profiles in the graphite container. (auth)

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15 pages

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  • Other Information: Orig. Receipt Date: 31-DEC-61

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  • August 25, 1961

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  • Jan. 22, 2018, 7:23 a.m.

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  • July 3, 2019, 12:32 p.m.

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Prados, John W. A Model for Fission-Gas Release From Porous Fuels in Low-Permeability Containers, report, August 25, 1961; Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc1052508/: accessed March 26, 2023), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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