Components' IMportance Measures for Initiating and Enabling events in Fault Tree Analysis
This report deals with the problem of determining the exact values of the importance indexes of basic events in case of both unavailability and frequency analysis of coherent and non-coherent fault trees. In particular a new method is described for determining the importance of enabling events in case of frequency analysis. Insights are given into the importance analysis implemented in the new software ASTRA 3.0 based on the Binary Decision Diagram approach with Labelled variables (LBDD). The analysis methods are also described with reference to modularised fault trees. Simple numerical examples are provided to clarify how the methods work. Proofs of the implemented equations are provided in Appendixes.
CONTINI Sergio;
MATUZAS Vaidas;
2010-05-21
Publications Office of the European Union
JRC58492
978-92-79-15799-8,
1018-5593,
EUR 24373 EN,
OP LB-NA-24373-EN-C,
https://publications.jrc.ec.europa.eu/repository/handle/JRC58492,
10.2788/93758,
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