RAC Maintainability Toolkit

The Reliability Analysis Center publication Maintainability Toolkit: A Practical Guide for Designing and Developing Maintainable Products and Systems defines several metrics that are supplied (under different names) within eXpress. The following table lists the applicable metrics in this document and their eXpress equivalents.

Metric	eXpress Equivalent	eXpress Report
Fraction of Faults Detectable	Total Probability Detected	Detection Order Report
Fraction of Faults Isolatable	Cumulative Pctg. (Cum %) column in Isolation Probabilities Using Testing Only	Fault Isolation Report
Fault Isolation Time	Expected Time to Isolate	Fault Isolation Report
Maximum Ambiguity Group Size	the last entry in the Size column	Fault Isolation Report
Mean-Time-to-Repair	Expected Time to Repair	Fault Isolation Report
Inherent Availability	Inherent Availability	Fault Isolation Report
Maintenance Ratio	Maintenance Ratio	Fault Isolation Report

Help

RAC Maintainability Toolkit