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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: Shanta
Date posted: Thu Mar 6 15:58:08 US/Eastern 2003
Subject: PRISM
I am evaluating PRISM software. Where can I get a standard that has all the equations, pi factors and base failure rates? For eg. if I use MIL-HDBK-217FN2, I can look up the equations, pi factors, base failure rates etc in the standard which is available free of charge. If I use Telcordia, I can buy the standard from them. What about PRISM? Can I buy it from RAC or is it available free of charge on some website? Will I get a copy if I buy the software from RAC?


Subject: PRISM Prediction Methodology
Reply Posted by: David Dylis ( )
Organization: Reliability Analysis Center (RAC)
Date Posted: Thu Mar 6 16:09:36 US/Eastern 2003
The PRISM includes many interactions between differing factors and many of these factors are each based on equations and there are not tables of data showing extremes. That is why when the RAC developed and released PRISM we made it a computer program and not a handbook as the latter would have been difficult for a user to implement. The RAC PRISM includes a User manual that contains information on most equations and factors used in component and system predictions. To learn more about PRISM and to download a demo version of the software, go to:

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