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Osäkerhetsanalys av PSA-resultat: Metodutveckling och parameterinventeringför osäkerhetsanalys av PSA-resultat
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
2017 (Swedish)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This master thesis examines the possibility of performing asimplified uncertainty analysis on a probabilistic safety assessment(PSA) of the Oskarshamn 3 nuclear power plant. The aim of the thesiswas divided in two parts, first to examine the uncertainty parametersof a PSA-model for Oskarshamn 3 and the second part was to developand examine a simplified method of uncertainty analysis as comparedto a more regular method of Monte Carlo-simulation. The thesis ismostly concerned with examining the core damage frequency. Theexamination of uncertainty parameters showed that many parameterswere missing from the model and thus further investigation areneeded, if a full Monte Carlo is to be performed. The simplifiedmethod for uncertainty analysis that was developed consisted ofassuming a lognormal distribution for the frequency of basic eventsand then using the minimal cutset-list to calculate an approximationto the end distribution. The simplified method was then compared tothe Monte Carlo-analysis for Oskarshamn 2 for different MCS-lists anda preliminary uncertainty analysis was performed for Oskarshamn 3.

Place, publisher, year, edition, pages
2017. , p. 45
Series
UPTEC ES, ISSN 1650-8300 ; 17 044
Keywords [sv]
PSA, Probabilistisk säkerhetsanalys, Osäkerhetsanalys, Osäkerhetspropagering
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-336256OAI: oai:DiVA.org:uu-336256DiVA, id: diva2:1165539
External cooperation
Lloyd's Register Consulting
Educational program
Master Programme in Energy Systems Engineering
Supervisors
Examiners
Available from: 2017-12-14 Created: 2017-12-13 Last updated: 2017-12-14Bibliographically approved

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CiteExportLink to record
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