Author Archives: Murray Wiseman
The elusive P-F interval
This article discusses the P-F Interval for CBM decision making, its areas of usefulness, and those areas where it is inadequate as a predictive maintenance strategy. An alternative more general approach based on the EXAKT system is proposed. Two categories … Continue reading
Posted in P-F Interval
Tagged CBM, Conditional density function, Conditional MTTF, EXAKT, Risk, RULE
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CBM Exercises
The exercise included on this page uses EXAKT CBM modeling software. EXAKT is an advanced Living RCM Certified® reliability analysis system that predicts a component’s remaining useful life based on its age and current condition. A maintenance department achieves continuous … Continue reading
Structured free text
Data or reliability analysis is the main role of the Reliability Engineer (RE) in maintenance. In support of his quest for good data, the RE should organize and teach technicians, planners and supervisors how to complete maintenance work orders so … Continue reading
Posted in Managing LRCM
Tagged Conditional density function, Confidence, Free text, KPIs, LRCM, Sample, Shape parameter, Standard deviation, What I did, What I found
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Time to failure
This slide presentation describes the basics of the age reliability relationship. It clarifies the difference between the Failure Rate function and the Conditional Probability of Failure. An amusing story about confusing Failure Rate and Conditional Failure Probability is told in … Continue reading
LRCM at Cerrejon
Without an adequate data sample there can be no reliability analysis (RA). Without analysis there can be no systematic, verifiable improvement in reliability nor in operational economy. A sample is a collection of life cycles. A beginning and ending event … Continue reading