An example of integrated approach to technical and economic optimization of maintenance

Rémy, Emmanuel; Corset, Franck; Despréaux, Stéphane; Doyen, Laurent; Gaudoin, Olivier

doi:10.1016/j.ress.2013.02.001

Cited by 31 publications

(16 citation statements)

References 32 publications

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“…A more defensive approach is to implement a preventive maintenance which is carried out when the system is operating and is intended to reduce and prevent these failures. Preventive maintenance can be performed at predetermined intervals or according to prescribed criteria for assessing the system degradation state and decide on an intervention when a certain threshold is reached [2,3]. In practice, these two types coexist and the simple way of modelling this situation is competing risks theory, introduced in the context of maintenance in [4].…”

Section: Introductionmentioning

confidence: 99%

“…However, reality is between these two extreme cases: maintenance reduces failures intensity but does not leave the system as good as new. This is known as imperfect maintenance [3]. This paper proposes to define a maintenance strategy of a computer system subjected both to corrective and preventive maintenance, through competing risks concept.…”

Section: Introductionmentioning

confidence: 99%

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Modelling and Simulation for Efficiency Factor Evaluation of Maintenance Strategies in a Computer System

Damerdji¹,

Noureddine²

2018

EAI Endorsed Transactions on Energy Web

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An efficient maintenance allows extension of operating life of system, thus contributing to increase system performance. Computer systems like other systems must operate without interruption and applied strategies of maintenance must be efficiency. This paper proposes to define a maintenance strategy of computer system subjected both to corrective and preventive maintenance. These aspects are modelled by competing risks concept and the Alert-delay model, which are generally used in industrial systems. The approach is applied on real data from computer system, localized in an industrial company and different scenarios are generated following various maintenance strategies. These policies are evaluated through minimal, perfect and imperfect models of maintenance for corrective and preventive maintenance. Simulation results give failure intensity assessment and efficiency factor value. Final outcomes are validated by dependability measures to select best strategies of maintenance.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modelling and Simulation for Efficiency Factor Evaluation of Maintenance Strategies in a Computer System

Damerdji¹,

Noureddine²

2018

EAI Endorsed Transactions on Energy Web

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“…En collaboration avec EDF R&D, le Laboratoire Jean Kuntzmann (LJK) a développé (E. Rémy et al, 2013) le logiciel MARS (Maintenance Assessment of Repairable Systems). MARS permet la modélisation et l'évaluation du vieillissement et de l'efficacité des maintenances.…”

Section: Introductionunclassified

VAM, outil logiciel adaptatif et libre pour prendre en compte l'effet des maintenances et du vieillissement

Doyen¹,

Drouilhet²

2016

Congrès Lambda Mu 20 De Maîtrise Des Risques Et De Sûreté De Fonctionnement

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RésuméLes hypothèses basiques sur l'effet de la maintenance sont "maintenance parfaite" ou As Good As New (le système est remisà neuf) et "maintenance minimale" ou As Bad As Old (la maintenance n'a aucun effet sur l'occurrence des défaillances futurs). En pratique, il est clair que pour des systèmes industriels importants on se situe entre ces deux cas extrêmes. Les modèles de maintenance imparfaite proposent une description d'un effet intermédiaire des maintenances. Dans cette soumission nous proposons une démonstration de notre solution logicielle VAM. VAM, pour Virtual Age Model, est un package R open source mettant en oeuvre les principaux modèles de maintenance imparfaite. L'utilisation de VAM est basée sur l'écriture d'une formule qui décrit le jeu de données et le modèle utilisé pour l'analyser. Cette formule rend le package très adaptatif car c'est l'utilisateur qui va y définir le comportement du système neuf non maintenu, les types et effets des différentes maintenances préventives et correctives, et la façon dont la maintenance préventive est planifiée. On peut ensuite utiliser les fonctionnalités du package pour simuler de nouveaux jeux de données, estimer par maximum de vraisemblance les paramètres du modèle, calculer et représenter graphiquement différents indicateurs. SummaryThe basic assumptions on maintenance efficiency are known as perfect maintenance or As Good As New (the system is renewed) and minimal maintenance or As Bad As Old (maintenance has no effect on future failures occurrences). Obviously reality falls between this two extreme cases. An intermediate maintenance effect can be described thanks to imperfect maintenance models. This paper presents an introductory tutorial for our VAM software. VAM, for Virtual Age Model, is an R open source package that implements the principal imperfect maintenance models. VAM usage is based on a formula which specify the characteristic of the data set to analyse and the model used for that. Thanks to this formula description the package becomes adaptative. In fact, the formula is defined by the user and characterises the behaviour of the new unmaintained system, the types and effects of the preventive and corrective maintenances, and how preventive maintenance times are planned. Then, the package functionalities enable to simulate new data sets, to estimate with maximum likelihood method the parameters of the model, to calculate and plot different indicators.

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“…Finally, the relevance of a model has to be checked by goodness‐of‐fit or model selection criteria. The Kijima/ARA model has been widely applied to real industrial data (eg, References 3,4) with meaningful results. So our position is that this model is relevant and useful.…”

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confidence: 99%

Discussion of “Virtual age, is it real?”

Doyen

Gaudoin

2020

Appl Stoch Models Bus & Ind

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An example of integrated approach to technical and economic optimization of maintenance

Cited by 31 publications

References 32 publications

Modelling and Simulation for Efficiency Factor Evaluation of Maintenance Strategies in a Computer System

Modelling and Simulation for Efficiency Factor Evaluation of Maintenance Strategies in a Computer System

VAM, outil logiciel adaptatif et libre pour prendre en compte l'effet des maintenances et du vieillissement

Discussion of “Virtual age, is it real?”

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