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Fred Schenkelberg — Thought Leader

Author of CRE Preparation Notes, Musings", NoMTBF, multiple books & ebooks>, co-host on Speaking of Reliability>/a>, and speaker in the Accendo Reliability Webinar Series.


This author's archive lists contributions of articles and episodes.

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5 Clues Using MTBF is Not Helping

5 Clues Using MTBF is Not Helping

Have you ever heard the claim that “We use MTBF, as it’s working just fine”?

They may be profitable and successful in the marketplace. Is MTBF serving them well?

Probably not.

One way help the folks claiming MTBF is alright is to illustrate using a better reliability metric may provide an improvement over using MTBF. Asking a few questions may find the inevitable chink in the MTBF armor.

  1. Any early failures due to supplier or assembly error?
  2. Any test design to check for how long the system will last?
  3. Ever notice maintenance seems to improve or degrade system performance?
  4. Did you fix the time frame for the calculation of MTBF?
  5. Do you plot and track the month to month changes in MTBF?

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