Validation of a Software-Related Failure Mode Taxonomy
Probabilistic Risk Assessment (PRA) is a methodology used to determine the probability of failure or success of a system. PRA results are typically used to make decisions on life extensions, sub-systems upgrades, scheduling of maintenance activities, selection of design concepts, etc. Current PRA methodology accounts for the contributions of hardware systems and in some instances of operating and maintenance crews to risk. However, modern systems are heavily software dependent and this dependency seems to increase. Current PRA methodology neglects the impact of software components on risk. This paper describes initial efforts to address the software issue.
KeywordsFailure Mode Configuration Management Probabilistic Risk Assessment Failure Report Interaction Failure
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