The combination of Importance and Sensitivity Analysis (ISA) with Fault Tree Analysis (FTA) constitutes a very powerful tool to improve the design of critical systems. Current ISA methodologies analyse different top-events sequentially to identify, through the components importance measures, the weakest parts of the system which require further design considerations. The present paper describes a new method for on-line Importance and Sensitivity Analysis which allows identifying design solutions that satisfy predefined failure probability goals for all Top-events. The originality of this method relies on the possibility to rapidly obtain a uniformly protected system, i.e. without weak points as well as without "over-reliable" functions.
CONTINI Sergio;
FABBRI Luciano;
2009-01-05
Università di Pisa
JRC45205
https://publications.jrc.ec.europa.eu/repository/handle/JRC45205,
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