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Forum: Reliability & Maintainability Questions and Answers

Topic: Reliability & Maintainability Questions and Answers

Topic Posted by: Reliability & Maintainability Forum ( )
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998

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Original Message:

Posted by: Ernie ( )
Organization:Thermal-Flow Designs, Inc.
Date posted: Sat Sep 14 13:33:43 US/Eastern 2002
Subject: 2 Fans in parallel reliability
Hi- I have 2 fans operating in parallel. Both have a MTBF of 20000 hours. If I am operating both...(dont consider MTTR) would the total MTBF be 10000hrs. Thank you, Ernie

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Subject: 2 fans
Reply Posted by: Jean-Marie CLOAREC ( )
Organization: LIGERON SA
Date Posted: Fri Sep 20 5:29:31 US/Eastern 2002
Agree with you Joe. The formula is true only with exponential assumption for failure rate.

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