LAPSE:2023.22745
Published Article
LAPSE:2023.22745
Safety Analysis Technique for System with Limited Data: Case Study of the Multipurpose Research Reactor in Indonesia
Heri Hermansyah, Anggraini Ratih Kumaraningrum, Julwan Hendry Purba, Edison, Masafumi Yohda
March 24, 2023
Fault tree analysis (FTA) is frequently applied to deductively evaluate the safety systems of complex engineering systems such as chemical industries or nuclear facilities. To perform this analysis, generic data are commonly used due to the limitation of historical failure data of the system being evaluated. However, generic data have a degree of uncertainty and hence cannot represent the system’s actual performance. In addition, generic data are not applicable to older components due to the aging process, which obviously degrades the reliability of those components. To deal with this limitation, another safety analysis method, called fuzzy fault tree analysis (FFTA), has been proposed. The purpose of this study is to apply FFTA to evaluate the performance of the primary cooling systems of G.A. Siwabessy Multipurpose Reactor (RSG-GAS). RSG-GAS is a research reactor, which belongs to the National Nuclear Energy Agency of Indonesia (BATAN). Expert justifications were used to evaluate the failure occurrences of basic events in the primary cooling system of the RSG−GAS through questionnaires. The assessment by experts is in the form of qualitative data, which are then converted into quantitative data by applying FFTA. Then, the top event probability generated from FFTA was applied to calculate the event probability using event tree analysis (ETA). It was obtained that the highest event probability was 4.304 × 10−8/year. Since it complies with The International Atomic Energy Agency (IAEA) specified core damage frequency (CDF) limit, i.e., not greater than 10−5/year of reactor operation, the reactor is safe to operate.
Keywords
fuzzy fault tree analysis, primary cooling system, research reactor, RSG–GAS, safety analysis
Suggested Citation
Hermansyah H, Kumaraningrum AR, Purba JH, Edison, Yohda M. Safety Analysis Technique for System with Limited Data: Case Study of the Multipurpose Research Reactor in Indonesia. (2023). LAPSE:2023.22745
Author Affiliations
Hermansyah H: Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia [ORCID]
Kumaraningrum AR: Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia; Center for Nuclear Standardization and Quality, National Nuclear Energy Agency of Indonesia (BATAN), Tangerang Selatan 15310, Indonesia
Purba JH: Center for Nuclear Reactor Technology and Safety, National Nuclear Energy Agency of Indonesia (BATAN), Tangerang Selatan 15310, Indonesia [ORCID]
Edison: Center for Multipurpose Reactor, National Nuclear Energy Agency of Indonesia (BATAN), Tangerang Selatan 15310, Indonesia
Yohda M: Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, Tokyo 184-8588, Japan
Journal Name
Energies
Volume
13
Issue
8
Article Number
E1975
Year
2020
Publication Date
2020-04-16
Published Version
ISSN
1996-1073
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PII: en13081975, Publication Type: Journal Article
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doi:10.3390/en13081975
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Mar 24, 2023
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