RESONANCE SELF-SHIELDING EFFECT IN UNCERTAINTY QUANTIFICATION OF FISSION REACTOR NEUTRONICS PARAMETERS
In order to properly quantify fission reactor neutronics parameter uncertainties, we have to use covariance data and sensitivity profiles consistently. In the present paper, we establish two consistent methodologies for uncertainty quantification: a self-shielded cross section-based consistent metho...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2014-06-01
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| Series: | Nuclear Engineering and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S173857331530125X |
| _version_ | 1811237523520749568 |
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| author | GO CHIBA AMSASHI TSUJI TADASHI NARABAYASHI |
| author_facet | GO CHIBA AMSASHI TSUJI TADASHI NARABAYASHI |
| author_sort | GO CHIBA |
| collection | DOAJ |
| description | In order to properly quantify fission reactor neutronics parameter uncertainties, we have to use covariance data and sensitivity profiles consistently. In the present paper, we establish two consistent methodologies for uncertainty quantification: a self-shielded cross section-based consistent methodology and an infinitely-diluted cross section-based consistent methodology. With these methodologies and the covariance data of uranium-238 nuclear data given in JENDL-3.3, we quantify uncertainties of infinite neutron multiplication factors of light water reactor and fast reactor fuel cells. While an inconsistent methodology gives results which depend on the energy group structure of neutron flux and neutron-nuclide reaction cross section representation, both the consistent methodologies give fair results with no such dependences. |
| first_indexed | 2024-04-12T12:24:59Z |
| format | Article |
| id | doaj.art-00d5def191fc4748bcebeaf22d8a4bb0 |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-04-12T12:24:59Z |
| publishDate | 2014-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-00d5def191fc4748bcebeaf22d8a4bb02022-12-22T03:33:11ZengElsevierNuclear Engineering and Technology1738-57332014-06-0146328129010.5516/NET.01.2014.707RESONANCE SELF-SHIELDING EFFECT IN UNCERTAINTY QUANTIFICATION OF FISSION REACTOR NEUTRONICS PARAMETERSGO CHIBAAMSASHI TSUJITADASHI NARABAYASHIIn order to properly quantify fission reactor neutronics parameter uncertainties, we have to use covariance data and sensitivity profiles consistently. In the present paper, we establish two consistent methodologies for uncertainty quantification: a self-shielded cross section-based consistent methodology and an infinitely-diluted cross section-based consistent methodology. With these methodologies and the covariance data of uranium-238 nuclear data given in JENDL-3.3, we quantify uncertainties of infinite neutron multiplication factors of light water reactor and fast reactor fuel cells. While an inconsistent methodology gives results which depend on the energy group structure of neutron flux and neutron-nuclide reaction cross section representation, both the consistent methodologies give fair results with no such dependences.http://www.sciencedirect.com/science/article/pii/S173857331530125XUncertainty QuantificationCovariance DataJENDL-3.3ERRORJ |
| spellingShingle | GO CHIBA AMSASHI TSUJI TADASHI NARABAYASHI RESONANCE SELF-SHIELDING EFFECT IN UNCERTAINTY QUANTIFICATION OF FISSION REACTOR NEUTRONICS PARAMETERS Nuclear Engineering and Technology Uncertainty Quantification Covariance Data JENDL-3.3 ERRORJ |
| title | RESONANCE SELF-SHIELDING EFFECT IN UNCERTAINTY QUANTIFICATION OF FISSION REACTOR NEUTRONICS PARAMETERS |
| title_full | RESONANCE SELF-SHIELDING EFFECT IN UNCERTAINTY QUANTIFICATION OF FISSION REACTOR NEUTRONICS PARAMETERS |
| title_fullStr | RESONANCE SELF-SHIELDING EFFECT IN UNCERTAINTY QUANTIFICATION OF FISSION REACTOR NEUTRONICS PARAMETERS |
| title_full_unstemmed | RESONANCE SELF-SHIELDING EFFECT IN UNCERTAINTY QUANTIFICATION OF FISSION REACTOR NEUTRONICS PARAMETERS |
| title_short | RESONANCE SELF-SHIELDING EFFECT IN UNCERTAINTY QUANTIFICATION OF FISSION REACTOR NEUTRONICS PARAMETERS |
| title_sort | resonance self shielding effect in uncertainty quantification of fission reactor neutronics parameters |
| topic | Uncertainty Quantification Covariance Data JENDL-3.3 ERRORJ |
| url | http://www.sciencedirect.com/science/article/pii/S173857331530125X |
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