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| Fault Tree Analysis Application for Safety and Reliability | |
| Point of Contact |
Dolores Wallace dwallac@pop300.gsfc.nasa.gov |
| Dates | October 2001 - September 2003 |
| Problem | Many commercial software tools exist for fault tree analysis (FTA), an accepted method for mitigating risk in systems. The method embedded in the tools identifies a root cause in system components, but when software is identified as a root cause, it does not build trees into the softwre component. No commercial software tools have been built specifically for development and analysis of software fault trees. Research indicates that the methods of FTA could be applied to software, but the method is not p ractical without automated tool support. |
| Objective | With appropriate automated tool support, software fault tree analysis (SFTA) may be a practical technique for identifying the underlying cause of software faults that may lead to critical system failures. We strive to demonstrate that existing commerical tools for FTA can be adapted for use with SFTA, and that applied to a safety-critical system, SFTA can be used to identify serious potential problems long before integration and sytem testing. |
| Results |
Results of SFTA Study.doc |
| Keywords | FTA, SFTA, critical system failures, safety-critical system |
| Categories |
Design Analysis Interface Analysis Requirements Analysis Software Architecture Assessment Traceability Analysis |
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Curator: Josh Stonestreet NASA Official: Lisa Montgomery |
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