Use a factor of 0.5 for vibration related saves. PM tasks, noise,temperature indications and sensory benefits of walk-downs will reduce the severity of the typical or average save. This will vary between categories, depending upon how effective the operators or maintenance personnel are at detection under plant conditions in the vicinity if the operating equipment. However a 50% factor is a reasonable starting assumption. Raise or lower the actual factor based on actual plant conditions.
Tip excerpted from “Predictive Maintenance Management” Course workbook by Jack Nicholas Jr.
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