Intercomparison of Results for a Pwr Rod Ejection Accident

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This study is part of an overall program to understand the uncertainty in best-estimate calculations of the local fuel enthalpy during the rod ejection accident. Local fuel enthalpy is used as the acceptance criterion for this design-basis event and can also be used to estimate fuel damage for the purpose of determining radiological consequences. The study used results from neutron kinetics models in PARCS, BARS, and CRONOS2, codes developed in the US, the Russian Federation, and France, respectively. Since BARS uses a heterogeneous representation of the fuel assembly as opposed to the homogeneous representations in PARCS and CRONOS, the effect ... continued below

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14 pages

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Diamond, D. J.; Aronson, A.; Jo, J.; Avvakumov, A.; Malofeev, V.; Sidorov, V. et al. October 1, 1999.

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Description

This study is part of an overall program to understand the uncertainty in best-estimate calculations of the local fuel enthalpy during the rod ejection accident. Local fuel enthalpy is used as the acceptance criterion for this design-basis event and can also be used to estimate fuel damage for the purpose of determining radiological consequences. The study used results from neutron kinetics models in PARCS, BARS, and CRONOS2, codes developed in the US, the Russian Federation, and France, respectively. Since BARS uses a heterogeneous representation of the fuel assembly as opposed to the homogeneous representations in PARCS and CRONOS, the effect of the intercomparison was primarily to compare different intra-assembly models. Quantitative comparisons for core power, reactivity, assembly fuel enthalpy and pin power were carried out. In general the agreement between methods was very good providing additional confidence in the codes and providing a starting point for a quantitative assessment of the uncertainty in calculated fuel enthalpy using best-estimate methods.

Physical Description

14 pages

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INIS; OSTI as DE00759033

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  • 27TH WATER SAFETY INFORMATION MEETING, WASHINGTON, DC (US), 10/01/1999

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  • Report No.: BNL--NUREG-67156
  • Report No.: 401001060
  • Grant Number: AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 759033
  • Archival Resource Key: ark:/67531/metadc708137

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • October 1, 1999

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  • Sept. 12, 2015, 6:31 a.m.

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  • Sept. 25, 2017, 5:16 p.m.

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Diamond, D. J.; Aronson, A.; Jo, J.; Avvakumov, A.; Malofeev, V.; Sidorov, V. et al. Intercomparison of Results for a Pwr Rod Ejection Accident, article, October 1, 1999; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc708137/: accessed October 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.