An improved modular approach for dynamic fault tree analysis

Modularization technique allows efficient simplification of Dynamic and Static Fault Tree (FT). Each independent sub-tree (module) in static FT can be calculated separately and substituted by a basic event with obtained probability of failure. However, there is a significant restriction of this proc...

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Bibliographic Details
Published in2011 Proceedings - Annual Reliability and Maintainability Symposium pp. 1 - 5
Main Author Yevkin, O
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.01.2011
Subjects
Approximation methods
Differential equations
Discrete Fourier transforms
dynamic fault tree
Fault trees
Logic gates
Markov processes
modular approach
Reliability
system reliability
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ISBN9781424488575
1424488575
ISSN0149-144X
DOI10.1109/RAMS.2011.5754437

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Summary:Modularization technique allows efficient simplification of Dynamic and Static Fault Tree (FT). Each independent sub-tree (module) in static FT can be calculated separately and substituted by a basic event with obtained probability of failure. However, there is a significant restriction of this procedure in Dynamic FT, if it is converted to a Markov Chain. An independent sub-tree inside of Dynamic FT cannot be converted to basic event in general case, because corresponding Failure Rate (FR) is not constant and is not defined at arbitrary time. In the present paper we consider a set of cases when this modularization technique is still possible inside a Dynamic FT.
ISBN:9781424488575
1424488575
ISSN:0149-144X
DOI:10.1109/RAMS.2011.5754437