Key differences in the fabrication, irradiation and high temperature accident testing of US and German TRISO-coated particle fuel, and their implications on fuel performance

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Historically, the irradiation performance of TRISO-coated gas reactor particle fuel in Germany has been superior to that in the US. German fuel generally has displayed gas release values during irradiation three orders of magnitude lower than US fuel. Thus, we have critically examined the TRISO-coated fuel fabrication processes in the US and Germany and the associated irradiation database with a goal of understanding why the German fuel behaves acceptably, why the US fuel has not faired as well, and what process/production parameters impart the reliable performance to this fuel form. The postirradiation examination results are also reviewed to identify failure ... continued below

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Petti, David Andrew; Buongiorno, Jacopo; Maki, John Thomas & Hobbins, Richard Redfield June 1, 2003.

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Historically, the irradiation performance of TRISO-coated gas reactor particle fuel in Germany has been superior to that in the US. German fuel generally has displayed gas release values during irradiation three orders of magnitude lower than US fuel. Thus, we have critically examined the TRISO-coated fuel fabrication processes in the US and Germany and the associated irradiation database with a goal of understanding why the German fuel behaves acceptably, why the US fuel has not faired as well, and what process/production parameters impart the reliable performance to this fuel form. The postirradiation examination results are also reviewed to identify failure mechanisms that may be the cause of the poorer US irradiation performance. This comparison will help determine the roles that particle fuel process/product attributes and irradiation conditions (burnup, fast neutron fluence, temperature, degree of acceleration) have on the behavior of the fuel during irradiation and provide a more quantitative linkage between acceptable processing parameters, as-fabricated fuel properties and subsequent in-reactor performance.

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  • HTR-T 2002,Petten, Netherlands,04/22/2002,04/24/2002

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  • Report No.: INEEL/CON-02-00289
  • Grant Number: DE-AC07-99ID-13727
  • Office of Scientific & Technical Information Report Number: 911071
  • Archival Resource Key: ark:/67531/metadc882322

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Office of Scientific & Technical Information Technical Reports

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  • June 1, 2003

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  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 7, 2016, 4:29 p.m.

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Petti, David Andrew; Buongiorno, Jacopo; Maki, John Thomas & Hobbins, Richard Redfield. Key differences in the fabrication, irradiation and high temperature accident testing of US and German TRISO-coated particle fuel, and their implications on fuel performance, article, June 1, 2003; [Idaho Falls, Idaho]. (digital.library.unt.edu/ark:/67531/metadc882322/: accessed November 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.