A new heuristics for the event ordering in binary decision diagram applied in fault tree analysis
نویسندگان
چکیده
منابع مشابه
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Probabilistic safety assessment (PSA) which plays a crucial role in risk evaluation is a quantitative approach intended to demonstrate how a nuclear reactor meets the safety margins as part of the licensing process. Despite PSA merits, some shortcomings associated with the final results exist. Conventional PSA uses crisp values to represent the failure probabilities of basic events. This causes...
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Event-tree analysis using binary decision diagrams
and Conclusions This paper is concerned with the analysis of Event Trees where the branch point event causes are defined using Fault Tree structures. Attention is focussed on the non-trivial situation where there are dependencies amongst the branch point events. The dependencies are due to component failure events featuring in one or more of the fault trees. In these situations it is shown that...
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Fault-tree analysis is commonly used for risk assessment of industrial systems. Several computer packages are available to carry out the analysis. Despite its common usage there are associated limitations of the technique in terms of accuracy and efficiency when dealing with large fault-tree structures. The most recent approach to aid the analysis of the fault-tree diagram is the BDD (binary de...
متن کاملIntegrating Fault Tree Analysis with Event Ordering Information
Fault tree analysis is a traditional and well-established technique for analyzing system design and robustness. Its purpose is to identify sets of basic events, called cut sets, which can cause a given top level event, e.g., a system malfunction, to occur. In this paper we present an algorithm that extracts ordering information, i.e., finds out possible ordering constraints which are required t...
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ژورنال
عنوان ژورنال: Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability
سال: 2019
ISSN: 1748-006X,1748-0078
DOI: 10.1177/1748006x19879305