Reliability theory and model-based diagnostics are two different, although closely related fields. Both have their own well-developed techniques and computational models, but their connection is rarely being pointed out. This paper starts from a common modular system description, whose underlying Boolean function is transformed into a compact graphical representation. The goal is to show how to...

The emphasis of the present study is on the evaluation of reliability measures of a computer system with independent hardware (h/w) and software (s/w) failures. A single repair facility is provided immediately for conducting repair activities of h/w and s/w. Preventive maintenance of the system is done after a maximum operation time. Replacement of the h/w by new one is made in case server fail...

This article presents a Decision Support System which focuses on an important organizational context: maintenance decisions. Usually, a specific management system is required to deal with data on failure, reliability, maintainability and availability regarding equipment. The maintenance context is surrounded by uncertainty and does not provide a clear profit from its activities, and thus requir...

In this research, a model for optimal PM planning based on reliability is developed and solved for multi-component systems. In the proposed model, the type of PM actions for each inspection period is determined in such manner that the total weighted related costs are minimized while a minimum required system reliability is maintained. The planning horizon is divided into some inspections interv...

The reliability of the braking system of moving walks plays a major role in the safe exploitation of these people movers. According to the requirements of the new standard ISO 22201-2, the reliability of a braking system of a moving walk has to correspond to safety integrity levels SIL1 till SIL3. In order to determine the required safety integrity level, a reliability analysis of a braking sys...

Under the pressure of electric power industry deregulation, the approaches to many traditional power system problems are being reconsidered. Important concerns have arisen with regards to equipment condition monitoring, preventive maintenance and system reliability calculations. Approaches to condition monitoring and maintenance have historically been ad hoc tending to follow broad company guid...