Identification and Analysis of External Event Combinations for Hanhikivi 1 PRA
Fennovoima's nuclear power plant, Hanhikivi 1, Pyhäjoki, Finland, is currently in design phase, and its construction is scheduled to begin in 2018 and electricity production in 2024. The objective of this paper is to produce a preliminary list of safety-significant external event combinations i...
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| Format: | Article |
| Language: | English |
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Elsevier
2017-03-01
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| Series: | Nuclear Engineering and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573316303230 |
| _version_ | 1818137076585988096 |
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| author | Juho Helander |
| author_facet | Juho Helander |
| author_sort | Juho Helander |
| collection | DOAJ |
| description | Fennovoima's nuclear power plant, Hanhikivi 1, Pyhäjoki, Finland, is currently in design phase, and its construction is scheduled to begin in 2018 and electricity production in 2024. The objective of this paper is to produce a preliminary list of safety-significant external event combinations including preliminary probability estimates, to be used in the probabilistic risk assessment of Hanhikivi 1 plant. Starting from the list of relevant single events, the relevant event combinations are identified based on seasonal variation, preconditions related to different events, and dependencies (fundamental and cascade type) between events. Using this method yields 30 relevant event combinations of two events for the Hanhikivi site. The preliminary probability of each combination is evaluated, and event combinations with extremely low probability are excluded from further analysis. Event combinations of three or more events are identified by adding possible events to the remaining combinations of two events. Finally, 10 relevant combinations of two events and three relevant combinations of three events remain. The results shall be considered preliminary and will be updated after evaluating more detailed effects of different events on plant safety. |
| first_indexed | 2024-12-11T09:50:33Z |
| format | Article |
| id | doaj.art-c2763cd8d0b443298c7142ced646953b |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-12-11T09:50:33Z |
| publishDate | 2017-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Engineering and Technology |
| spelling | doaj.art-c2763cd8d0b443298c7142ced646953b2022-12-22T01:12:25ZengElsevierNuclear Engineering and Technology1738-57332017-03-0149238038610.1016/j.net.2017.01.007Identification and Analysis of External Event Combinations for Hanhikivi 1 PRAJuho HelanderFennovoima's nuclear power plant, Hanhikivi 1, Pyhäjoki, Finland, is currently in design phase, and its construction is scheduled to begin in 2018 and electricity production in 2024. The objective of this paper is to produce a preliminary list of safety-significant external event combinations including preliminary probability estimates, to be used in the probabilistic risk assessment of Hanhikivi 1 plant. Starting from the list of relevant single events, the relevant event combinations are identified based on seasonal variation, preconditions related to different events, and dependencies (fundamental and cascade type) between events. Using this method yields 30 relevant event combinations of two events for the Hanhikivi site. The preliminary probability of each combination is evaluated, and event combinations with extremely low probability are excluded from further analysis. Event combinations of three or more events are identified by adding possible events to the remaining combinations of two events. Finally, 10 relevant combinations of two events and three relevant combinations of three events remain. The results shall be considered preliminary and will be updated after evaluating more detailed effects of different events on plant safety.http://www.sciencedirect.com/science/article/pii/S1738573316303230Event CombinationsExternal EventsProbabilistic Risk Assessment |
| spellingShingle | Juho Helander Identification and Analysis of External Event Combinations for Hanhikivi 1 PRA Nuclear Engineering and Technology Event Combinations External Events Probabilistic Risk Assessment |
| title | Identification and Analysis of External Event Combinations for Hanhikivi 1 PRA |
| title_full | Identification and Analysis of External Event Combinations for Hanhikivi 1 PRA |
| title_fullStr | Identification and Analysis of External Event Combinations for Hanhikivi 1 PRA |
| title_full_unstemmed | Identification and Analysis of External Event Combinations for Hanhikivi 1 PRA |
| title_short | Identification and Analysis of External Event Combinations for Hanhikivi 1 PRA |
| title_sort | identification and analysis of external event combinations for hanhikivi 1 pra |
| topic | Event Combinations External Events Probabilistic Risk Assessment |
| url | http://www.sciencedirect.com/science/article/pii/S1738573316303230 |
| work_keys_str_mv | AT juhohelander identificationandanalysisofexternaleventcombinationsforhanhikivi1pra |