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Forum Questions and Answers
Topic: PRISM Questions and Answers
Topic Posted by: SRC
(src_forum@alionscience.com
)
Organization: SRC
Date Posted: Wed Jan 12 8:33:33 US/Eastern 2000
Topic Description: Welcome to the PRISM forum! Please feel free to post your questions and comments about the PRISM assessment software here.
Original Message:
Posted by: George Pyryt
(gpyryt@draper.com
)
Organization:Draper Laboratory
Date posted: Tue Apr 11 12:14:22 US/Eastern 2000
Subject: Storage reliability
Message:
I would like to calculate the dormant storage reliability of a system using PRISM. I set duty cycle and cycling rate to zero and also did not input any stress parameters for parts. The result gives me a failure rate which includes solder joint and electrical overstress failure rate components for each part in addition to the part nonoperational failure rate. I also applied Process Grade Factor. Is this failure rate comparable to previous approach of using 1% conversion factor for dormant storage? If not, what data should be used to get storage reliability.
Reply:
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