What is Reliability Centered Maintenance?
Does the age of equipment increase the probability of failure?
That was the conventional wisdom until Nowlan & Heap discovered that components have six different types of failure patterns:
- Bathtub – 4%
- Wear Out – 2%
- Fatigue Related – 5%
- Rapid Increase to Random – 7%
- Random Level of Failure – 14%
- Infant mortality – 68%
This means only 11% of failures are age related… 89% are not age related – so why do PM Programs still rely on time-based maintenance (Replacements, Overhauls) they only address 11% of failures.
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