Author Archives: Murray Wiseman
Service vs. maintenance
There is a noteworthy distinction between the activities of “maintenance” on one hand and “service” on the other. Maintenance is a partial or total renewal of an item. Maintenance reduces the physical age of an item or can even “zero … Continue reading
Non-rejuvenating events
By definition a Non-Rejuvinating Event (NRE) is an action that systematically affects condition monitoring value levels, but does not add “life” to (i.e. reduce the physical age of) the asset. For example, if immediately after greasing the bearing, there is a … Continue reading
Defeating CBM
The following slide presentation on the importance of distinguishing failures from suspensions on work orders, refers to the Proportional Hazard Model (PHM) and the shape parameter β. The shape parameter is calculated from a good sample of condition monitoring and … Continue reading
Failure declaration standards
A reliability engineer points out that in a mining operation hydraulic leaks in the fleet equipment are a major source of lost production. So during regular inspections the technicians are looking for leaks and if they find them they change … Continue reading
Posted in Data and samples
Tagged Mistaking failure for suspension, Potential failure, Suspension
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