Combining reliability assessment with maintenance performance analysis using GAMM

Abstract

GAMM (Graphical Analysis for Maintenance Management) is a method that supports decision-making in maintenance management through the visualization and graphical analysis of reliability data. One of the most important features of GAMM is that fosters the combination of reliability assessment with the current asset performance analysis. As a basis for reliability analysis, the GAMM method uses a nonparametric estimator of the reliability function using historical data, sometimes in very limited amounts. For successful results, experience and knowledge in maintenance management are strictly necessary. At the same time, experience shows that the method may become really amicable for managers due to clear visualization and by using a set of basic rules. The analysis can be made per category of assets, per asset, per maintenance skill or per failure mode. In this paper we present certain rules to be applied when using GAMM with the intention to show the capabilities of the method and the possibilities that offers for practical maintenance and asset performance analysis.