Optimizing imperfect preventive maintenance in multi-component repairable systems under s-dependent competing risks

2021 ◽  
pp. 108177
Author(s):  
Lin Zhang ◽  
Xiaohui Chen ◽  
Abdelhakim Khatab ◽  
Youjun An
Keyword(s):  
Competing Risks ◽  
Preventive Maintenance ◽  
Repairable Systems ◽  
Dependent Competing Risks

Bayesian non-parametric frailty model for dependent competing risks in a repairable systems framework

2020 ◽  
Vol 204 ◽  
pp. 107145
Author(s):  
Marco Pollo Almeida ◽  
Rafael S. Paixão ◽  
Pedro L. Ramos ◽  
Vera Tomazella ◽  
Francisco Louzada ◽  
...  
Keyword(s):  
Competing Risks ◽  
Frailty Model ◽  
Repairable Systems ◽  
Dependent Competing Risks ◽  
Systems Framework ◽  
Parametric Frailty ◽  
Non Parametric

scholarly journals Imperfect maintenance in a generalized competing risks framework

2006 ◽  
Vol 43 (03) ◽  
pp. 825-839 ◽  
Author(s):  
Laurent Doyen ◽  
Olivier Gaudoin
Keyword(s):  
Competing Risks ◽  
Preventive Maintenance ◽  
General Framework ◽  
Imperfect Maintenance ◽  
Repairable Systems ◽  
New Class ◽  
Virtual Age ◽  
System A ◽  
Age Model ◽  
The One

In this paper we present a general framework for the modelling of the process of corrective and condition-based preventive maintenance actions for complex repairable systems. A new class of models is proposed, the generalized virtual age models. On the one hand, these models generalize Kijima's virtual age models to the case where both preventive and corrective maintenances are present. On the other hand, they generalize the usual competing risks models to imperfect maintenance actions which do not renew the system. A generalized virtual age model is defined by both a sequence of effective ages which characterizes the effects of both types of maintenance according to a classical virtual age model, and a usual competing risks model which characterizes the dependency between the two types of maintenance. Several particular cases of the general model are derived.

scholarly journals Imperfect maintenance in a generalized competing risks framework

2006 ◽  
Vol 43 (3) ◽  
pp. 825-839 ◽  
Author(s):  
Laurent Doyen ◽  
Olivier Gaudoin
Keyword(s):  
Competing Risks ◽  
Preventive Maintenance ◽  
General Framework ◽  
Imperfect Maintenance ◽  
Repairable Systems ◽  
New Class ◽  
Virtual Age ◽  
System A ◽  
Age Model ◽  
The One

In this paper we present a general framework for the modelling of the process of corrective and condition-based preventive maintenance actions for complex repairable systems. A new class of models is proposed, the generalized virtual age models. On the one hand, these models generalize Kijima's virtual age models to the case where both preventive and corrective maintenances are present. On the other hand, they generalize the usual competing risks models to imperfect maintenance actions which do not renew the system. A generalized virtual age model is defined by both a sequence of effective ages which characterizes the effects of both types of maintenance according to a classical virtual age model, and a usual competing risks model which characterizes the dependency between the two types of maintenance. Several particular cases of the general model are derived.

Selection of Maintenance Strategies in an Operating Theatre

2021 ◽  
pp. 1-35
Author(s):  
María Carmen Carnero ◽  
Andrés Gómez
Keyword(s):  
Preventive Maintenance ◽  
Predictive Maintenance ◽  
Operating Theatre ◽  
Sterile Water ◽  
Repairable Systems ◽  
Corrective Maintenance ◽  
Water Power ◽  
Suitable Combination ◽  
Multicriteria Model ◽  
Maintenance Policies

The aim of this chapter is to select the most suitable combination of maintenance policies in the different systems that make up an operating theatre: air conditioning, sterile water, power supply, medicinal gases, and operating theatre lighting. To do so, a multicriteria model will be developed using the Measuring Attractiveness by a Categorical Based Evaluation Technique (MACBETH) approach considering multiple decision centres. The model uses functional, safety, and technical-economic criteria, amongst which is availability. Mean availability for repairable systems has been measured to assess this criterion, using Markov chains from the data obtained over three years from the subsystems of a hospital operating theatre. The alternatives considered are corrective maintenance; preventive maintenance together with corrective maintenance by means of daily, weekly, monthly, and yearly programmes; periodical predictive maintenance together with corrective maintenance; and corrective together with preventive and predictive maintenance.

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