Parametric NdRFT for the derivation of optimal repair strategies

Beccuti, Marco; Franceschinis, Giuliana; Haddad, Serge

doi:10.1109/dsn.2009.5270312

Cited by 3 publications

(3 citation statements)

References 15 publications

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“…Conversion to Markov Decision Process allows optimal policies to be automatically derived from the FT when costs of unavailability, failures, and repairs are provided. A parametric version [171] of the formalism allows for more efficient modeling and analysis if the FT contains subtrees that differ only in the parameters of the BEs.…”

Section: Repairable Fault Treesmentioning

confidence: 99%

Fault tree analysis: A survey of the state-of-the-art in modeling, analysis and tools

Ruijters

Stoelinga

2015

Computer Science Review

580

368

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Reliability Risk analysis Dynamic Fault Trees Graphical models Dependability evaluation A B S T R A C T Fault tree analysis (FTA) is a very prominent method to analyze the risks related to safety and economically critical assets, like power plants, airplanes, data centers and web shops. FTA methods comprise of a wide variety of modeling and analysis techniques, supported by a wide range of software tools. This paper surveys over 150 papers on fault tree analysis, providing an in-depth overview of the state-of-the-art in FTA. Concretely, we review standard fault trees, as well as extensions such as dynamic FT, repairable FT, and extended FT. For these models, we review both qualitative analysis methods, like cut sets and common cause failures, and quantitative techniques, including a wide variety of stochastic methods to compute failure probabilities. Numerous examples illustrate the various approaches, and tables present a quick overview of results.

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Section: Repairable Fault Treesmentioning

confidence: 99%

Fault tree analysis: A survey of the state-of-the-art in modeling, analysis and tools

Ruijters

Stoelinga

2015

Computer Science Review

580

368

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“…Recently, we have proposed the Parametric NdRFT (ParNdRFT) [33], an extension of the NdRFT that automatically exploits the presence of redundancy in the system to reduce the complexity of the model and of its analysis. It is based on the translation of the ParNdRFT into a MDWN, i.e.…”

Section: Discussionmentioning

confidence: 99%

Computing Optimal Repair Strategies by Means of NdRFT Modeling and Analysis

Beccuti¹,

Franceschinis²,

Codetta‐Raiteri³

et al. 2013

The Computer Journal

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In this paper, the Non deterministic Repairable Fault Tree (NdRFT) formalism is proposed: it allows the modeling of failures of complex systems in addition to their repair processes. Its originality with respect to other Fault Tree extensions allows us to address repair strategy optimization problems: in an NdRFT model, the decision as to whether to start or not a given repair action is non deterministic, so that all the possibilities are left open. The formalism is rather powerful allowing the specification of self revealing events, components degradation, whether local repair, global repair and preventive maintenance can be applied, and the resources needed to start a repair action. The optimal repair strategy with respect to some relevant system state function, e.g. system unavailability, can then be computed by solving an optimization problem on a Markov Decision Process derived from the NdRFT. Such derivation is obtained by converting the NdRFT model into an intermediate formalism called Markov Decision Petri Net (MDPN). In the paper, the NdRFT syntax and semantics are formally described, together with the conversion rules into MDPN. The application of NdRFT is illustrated through examples.

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“…Conversion to Markov Decision Process allows optimal policies to be automatically derived from the FT when costs of unavailability, failures, and repairs are provided. A parametric version [BFCRH09] of the formalism allows for more efficient modeling and analysis if the FT contains subtrees that differ only in the parameters of the BEs.…”

Section: Repairable Fault Treesmentioning

confidence: 99%

Zen and the Art of Railway Maintenance

Ruijters¹

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Parametric NdRFT for the derivation of optimal repair strategies

Abstract: Abstract

Cited by 3 publications

References 15 publications

Fault tree analysis: A survey of the state-of-the-art in modeling, analysis and tools

Fault tree analysis: A survey of the state-of-the-art in modeling, analysis and tools

Computing Optimal Repair Strategies by Means of NdRFT Modeling and Analysis

Zen and the Art of Railway Maintenance

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