Asset Reliability, Availability & Maintainability - QDA

Insights, Strategy

Probability & Statistical Analysis

Reliability is defined as a system’s or technology’s probability that the system will perform its specified function under the technical requirements throughout it’s life expectancy.

The function of a maintenance program then can be expected to include all activities that will keep the system in optimum working order during the life of the system.

An appropriate preventive and predictive maintenance program can improve and enhance these chances by contributing to the reliability of the system in order to plan for an adequate maintenance program.

Most operating equipment or facilities are treated as a system rather than as individual components, (as outlined in QDA’s TAP). A system is a logical collection and arrangement of usually a combination of series and parallel components forming in most cases subsystems.

The overall reliability of a system is a function of the number of components, the configuration or arrangement of these components in the system, and the reliability of each individual component. If one of these components fail then the system overall can fail.

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