Failure possibilities for nuclear safety assessment by fault tree analysis
- Publisher:
- Inderscience Publishers
- Publication Type:
- Journal Article
- Citation:
- International Journal of Nuclear Knowledge Management, 2011, 5 (2), pp. 162 - 177
- Issue Date:
- 2011-01
Closed Access
Filename | Description | Size | |||
---|---|---|---|---|---|
2010003323OK.pdf | Published Version | 281.82 kB |
Copyright Clearance Process
- Recently Added
- In Progress
- Closed Access
This item is closed access and not available.
Fault tree analysis (FTA) is a deductive tool to assess the safety of nuclear power plants. This analysis can only be implemented if all basic events in the tree have their corresponding failure rates. Therefore, safety analysts have to provide those failure rates well in advance. However, it is often difficult to obtain those failure rates due to insufficient data, changing environment or new components. This paper proposes a failure possibility based FTA approach to overcome the limitation of the conventional FTA for nuclear safety assessment. It utilises the concept of failure possibilities to evaluate basic event failure without historical data, fuzzy numbers to map component failure possibilities into mathematical form and defuzzification algorithms to convert fuzzy numbers into component failure rates. A case study on evaluating a typical high pressure core spray system of a boiling water reactor illustrates the applicability of the proposed approach.
Please use this identifier to cite or link to this item: