Impact of intermediate and high energy nuclear data on the neutronic safety parameters of MYRRHA accelerator driven system
Perturbation of external neutron source can cause significant local power changes transformed into undesired safety-related events in an accelerator driven system. Therefore for the accurate design of MYRRHA sub-critical core it is important to evaluate the uncertainty of power responses caused by t...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2017-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://doi.org/10.1051/epjconf/201714609001 |
| _version_ | 1819115604044414976 |
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| author | Stankovskiy Alexey Çelik Yurdunaz Eynde Gert Van den |
| author_facet | Stankovskiy Alexey Çelik Yurdunaz Eynde Gert Van den |
| author_sort | Stankovskiy Alexey |
| collection | DOAJ |
| description | Perturbation of external neutron source can cause significant local power changes transformed into undesired safety-related events in an accelerator driven system. Therefore for the accurate design of MYRRHA sub-critical core it is important to evaluate the uncertainty of power responses caused by the uncertainties in nuclear reaction models describing the particle transport from primary proton energy down to the evaluated nuclear data table range. The calculations with a set of models resulted in quite low uncertainty on the local power caused by significant perturbation of primary neutron yield from proton interactions with lead and bismuth isotopes. The considered accidental event of prescribed proton beam shape loss causes drastic increase in local power but does not practically change the total core thermal power making this effect difficult to detect. In the same time the results demonstrate a correlation between perturbed local power responses in normal operation and misaligned beam conditions indicating that generation of covariance data for proton and neutron induced neutron multiplicities for lead and bismuth isotopes is needed to obtain reliable uncertainties for local power responses. |
| first_indexed | 2024-12-22T05:03:50Z |
| format | Article |
| id | doaj.art-da8be75685c14d30be3fc1f0dec79695 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-22T05:03:50Z |
| publishDate | 2017-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-da8be75685c14d30be3fc1f0dec796952022-12-21T18:38:10ZengEDP SciencesEPJ Web of Conferences2100-014X2017-01-011460900110.1051/epjconf/201714609001epjconf-nd2016_09001Impact of intermediate and high energy nuclear data on the neutronic safety parameters of MYRRHA accelerator driven systemStankovskiy Alexey0Çelik Yurdunaz1Eynde Gert Van den2SCK·CEN, Boeretang 200SCK·CEN, Boeretang 200SCK·CEN, Boeretang 200Perturbation of external neutron source can cause significant local power changes transformed into undesired safety-related events in an accelerator driven system. Therefore for the accurate design of MYRRHA sub-critical core it is important to evaluate the uncertainty of power responses caused by the uncertainties in nuclear reaction models describing the particle transport from primary proton energy down to the evaluated nuclear data table range. The calculations with a set of models resulted in quite low uncertainty on the local power caused by significant perturbation of primary neutron yield from proton interactions with lead and bismuth isotopes. The considered accidental event of prescribed proton beam shape loss causes drastic increase in local power but does not practically change the total core thermal power making this effect difficult to detect. In the same time the results demonstrate a correlation between perturbed local power responses in normal operation and misaligned beam conditions indicating that generation of covariance data for proton and neutron induced neutron multiplicities for lead and bismuth isotopes is needed to obtain reliable uncertainties for local power responses.https://doi.org/10.1051/epjconf/201714609001 |
| spellingShingle | Stankovskiy Alexey Çelik Yurdunaz Eynde Gert Van den Impact of intermediate and high energy nuclear data on the neutronic safety parameters of MYRRHA accelerator driven system EPJ Web of Conferences |
| title | Impact of intermediate and high energy nuclear data on the neutronic safety parameters of MYRRHA accelerator driven system |
| title_full | Impact of intermediate and high energy nuclear data on the neutronic safety parameters of MYRRHA accelerator driven system |
| title_fullStr | Impact of intermediate and high energy nuclear data on the neutronic safety parameters of MYRRHA accelerator driven system |
| title_full_unstemmed | Impact of intermediate and high energy nuclear data on the neutronic safety parameters of MYRRHA accelerator driven system |
| title_short | Impact of intermediate and high energy nuclear data on the neutronic safety parameters of MYRRHA accelerator driven system |
| title_sort | impact of intermediate and high energy nuclear data on the neutronic safety parameters of myrrha accelerator driven system |
| url | https://doi.org/10.1051/epjconf/201714609001 |
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