Comparison of fission product release predictions using PARFUME with results from the AGR-1 safety tests
Abstract
Safety tests were conducted on fuel compacts from AGR-1, the first irradiation experiment of the Advanced Gas Reactor (AGR) Fuel Development and Qualification program, at temperatures ranging from 1600 to 1800 °C to determine fission product release at temperatures that bound reactor accident conditions. The PARFUME (PARticle FUel ModEl) code was used to predict the release of fission products silver, cesium, strontium, and krypton from fuel compacts containing tristructural isotropic (TRISO) coated particles during 15 of these safety tests. Comparisons between PARFUME predictions and post-irradiation examination results of the safety tests were conducted on two types of AGR-1 compacts: compacts containing only intact particles and compacts containing one or more particles whose SiC layers failed during safety testing. In both cases, PARFUME globally over-predicted the experimental release fractions by several orders of magnitude: more than three (intact) and two (failed SiC) orders of magnitude for silver, more than three and up to two orders of magnitude for strontium, and up to two and more than one orders of magnitude for krypton. The release of cesium from intact particles was also largely over-predicted (by up to five orders of magnitude) but its release from particles with failed SiC was only over-predictedmore »
- Authors:
-
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Publication Date:
- Research Org.:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE)
- OSTI Identifier:
- 1246116
- Alternate Identifier(s):
- OSTI ID: 1488998
- Report Number(s):
- INL/JOU-15-34147
Journal ID: ISSN 0029-5493; PII: S0029549316300085
- Grant/Contract Number:
- AC07-05ID14517
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Engineering and Design
- Additional Journal Information:
- Journal Volume: 301; Journal Issue: C; Journal ID: ISSN 0029-5493
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; tristructural isotropic (TRISO); PARFUME; advanced gas reactor; high temperature gas reactors (HTGRs); advanced test reactor
Citation Formats
Collin, Blaise P., Petti, David A., Demkowicz, Paul A., and Maki, John T. Comparison of fission product release predictions using PARFUME with results from the AGR-1 safety tests. United States: N. p., 2016.
Web. doi:10.1016/j.nucengdes.2016.03.023.
Collin, Blaise P., Petti, David A., Demkowicz, Paul A., & Maki, John T. Comparison of fission product release predictions using PARFUME with results from the AGR-1 safety tests. United States. https://doi.org/10.1016/j.nucengdes.2016.03.023
Collin, Blaise P., Petti, David A., Demkowicz, Paul A., and Maki, John T. Thu .
"Comparison of fission product release predictions using PARFUME with results from the AGR-1 safety tests". United States. https://doi.org/10.1016/j.nucengdes.2016.03.023. https://www.osti.gov/servlets/purl/1246116.
@article{osti_1246116,
title = {Comparison of fission product release predictions using PARFUME with results from the AGR-1 safety tests},
author = {Collin, Blaise P. and Petti, David A. and Demkowicz, Paul A. and Maki, John T.},
abstractNote = {Safety tests were conducted on fuel compacts from AGR-1, the first irradiation experiment of the Advanced Gas Reactor (AGR) Fuel Development and Qualification program, at temperatures ranging from 1600 to 1800 °C to determine fission product release at temperatures that bound reactor accident conditions. The PARFUME (PARticle FUel ModEl) code was used to predict the release of fission products silver, cesium, strontium, and krypton from fuel compacts containing tristructural isotropic (TRISO) coated particles during 15 of these safety tests. Comparisons between PARFUME predictions and post-irradiation examination results of the safety tests were conducted on two types of AGR-1 compacts: compacts containing only intact particles and compacts containing one or more particles whose SiC layers failed during safety testing. In both cases, PARFUME globally over-predicted the experimental release fractions by several orders of magnitude: more than three (intact) and two (failed SiC) orders of magnitude for silver, more than three and up to two orders of magnitude for strontium, and up to two and more than one orders of magnitude for krypton. The release of cesium from intact particles was also largely over-predicted (by up to five orders of magnitude) but its release from particles with failed SiC was only over-predicted by a factor of about 3. These over-predictions can be largely attributed to an over-estimation of the diffusivities used in the modeling of fission product transport in TRISO-coated particles. The integral release nature of the data makes it difficult to estimate the individual over-estimations in the kernel or each coating layer. Nevertheless, a tentative assessment of correction factors to these diffusivities was performed to enable a better match between the modeling predictions and the safety testing results. The method could only be successfully applied to silver and cesium. In the case of strontium, correction factors could not be assessed because potential release during the safety tests could not be distinguished from matrix content released during irradiation. Furthermore, in the case of krypton, all the coating layers are partly retentive and the available data did not allow the level of retention in individual layers to be determined, hence preventing derivation of any correction factors.},
doi = {10.1016/j.nucengdes.2016.03.023},
journal = {Nuclear Engineering and Design},
number = C,
volume = 301,
place = {United States},
year = {Thu Apr 07 00:00:00 EDT 2016},
month = {Thu Apr 07 00:00:00 EDT 2016}
}
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