Author Archives: Murray Wiseman

Sample selection

A good sample should include both good and bad actors. For example, pumps that fail frequently as well as those that do not fail or fail infrequently should be included. This ensures an unbiased sample. Normally the analyst takes two … Continue reading

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Elevator description of LRCM

Someone asked for a LRCM description that is easy to grasp in a short sales oriented narrative? In other words what is elevator pitch? Here it is. This might be a longer than average elevator ride, though: For many decades … Continue reading

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Effects – alternate usages

In many RCM software applications the Effects has a different usage from that which we describe in many places throughout this website. For example, in one RCM software application, when you open up the properties of a given Failure Mode … Continue reading

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LRCM Lessons Learned

A prominent mining operation uses the SAP maintenance module as their CMMS, As well they use the OSIsoft PI system. However, they admit that their data is messy, non-standardized, and unreliable as a result of a multitude of approaches and … Continue reading

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PF interval from the failure rate

How can the PF interval be determined from the failure rate? You can’t know the PF interval directly from the failure rate. The PF interval is unrelated mathematically to the failure rate. It is the lead time between the ability … Continue reading

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