Tag: Failure data
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Optimizing a Condition Based Maintenance Program with Gearbox Tooth Failure
A Condition Based Maintenance (CBM) policy is a procedure used by maintenance personnel to interpret a set of measured machine condition indicators and decide whether or not to renew a physical asset at the current moment. Traditionally CBM data interpretive policies have been obvious. For example, if the glycol measurement in an engine’s lube oil is…
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Does historical age data have value?
The following is a quote from a well known consultant: The biggest problem we have is lack of data… The data we do have in most cases is subject to different conditions as well. So if I have managed to collect 10 failures of a pump in 15 years, I am unlikely to be able…
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Interpreting failure data
Here is an excerpt from the famous Nowlen & Heap RCM report of 1978. It describes some basic difficulties in the analysis of reliability related data. The problem of interpreting failure data is further complicated by differences in reporting policy from one organization to another. For example, one airline might classify an engine removed because…