Sensitivity and uncertainty analysis on the first core criticality of the RSG GAS multipurpose research reactor.
In: Progress in Nuclear Energy, Jg. 114 (2019-07-01), S. 46-60
academicJournal
Zugriff:
Abstract The results of criticality, sensitivity and uncertainty (S/U) analyses on the 1st core criticality of the Indonesian 30 MWth Multipurpose Reactor RSG GAS (MPR-30) using the recent nuclear data libraries (ENDF/B-VII.1 and JENDL-4.0) and analytical tools available at present (Whisper-1.1) are presented. Two groups of criticality benchmark cases have been carefully selected from the experiments conducted during the first criticality approach and control rod calibrations. The C/E values of k (effective neutron multiplication factor) for the worst case is found around 1.005. Large negative sensitivities are found in (n,γ) reaction of H-1, U-235, Al-27, U-238, and Be-9 while large positive sensitivities are found in U-235 (total nu and fission), H-1 (elastic), Be-9 (free gas, elastic) and H-1 S(α,β) (lwtr.20t, inelastic). The energy dependency of the sensitivities is also presented and discussed in detail. From the S/U analysis, it is found that the uncertainties of k due to the nuclear data are about 0.6%, which are comparable to the [C/E−1] values. k Differences in the sensitivities amongst the two nuclear data libraries are also identified, and recommendation for improving the nuclear data library is given. Highlights • S/U analysis for 1st core criticality of RSG GAS using WHISPER-1.1 and ENDF/B-VII.1 and JENDL/4.0 nuclear data libraries. • Performed at 2 different criticality conditions: first criticality approach and control rod calibrations. • 44-group energy dependence sensitivities for major isotopes are presented. • Uncertainty of k is found to be reasonable compared to the experiment results. [ABSTRACT FROM AUTHOR]
Titel: |
Sensitivity and uncertainty analysis on the first core criticality of the RSG GAS multipurpose research reactor.
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Autor/in / Beteiligte Person: | Liem, Peng Hong ; Zuhair ; Hartanto, Donny |
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Zeitschrift: | Progress in Nuclear Energy, Jg. 114 (2019-07-01), S. 46-60 |
Veröffentlichung: | 2019 |
Medientyp: | academicJournal |
ISSN: | 0149-1970 (print) |
DOI: | 10.1016/j.pnucene.2019.03.001 |
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