Category: Theory and definitions
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FMEA according to Wikipedia
FMEA stands for “Failure Modes and Effects Analysis”. It begins with a thorough functional analysis. FMEA is the core process of RCM. However, the FMEA article in Wikipedia is misleading. It uses outdated terminology that renders the subject of FMEA vague, confusing, and even mystical. FMEA depends on clarity. Maintenance depends on clear and simple terms…
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Criticality analysis in RCM
Criticality Analysis may be applied at two levels of the RCM process. First, it may be used to sort or classify a large number of equipment assets as to their priority for analysis. Secondly criticality analysis may be applied to individual failure modes as in the FMECA process. Criticality analysis when performed on failure modes…
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Myths about RCM in heavy mining equipment
Myth 1: Within the HME community, RCM seems to have been labeled “a waste of resource, time and effort” …, Fact: This happens where RCM is treated as a one-time project rather than a living process integrated into everyday maintenance work order activity. Here are some of the reasons why RCM projects may not provide…
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Leading and lagging performance numbers
One point of discussion is the role of high level (lagging) KPIs. In mining, over the last decade, given the unrelenting world demand for resources, the KPI of greatest concern has been Availability, almost to the exclusion of other considerations. This view can falsify conclusions about real maintenance performance. One example concerns the shovels which…
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Performance metrics – Low and High level KPIs
Performance metrics should point us to precisely what we need to improve currently in our maintenance process. That is, they should trigger a control action. Subsequently they should confirm and measure the extent to which the control action had the desired effect. Often, performance metrics do not indicate what management action must be taken to…