Transcription of Fault Tree Analysis
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Fault Tree Analysis
Fault Tree Analysis Clifton A. Ericson II. 1 C. Ericson 1999. Fault Tree Analysis Clifton A. Ericson II. Sept. 2000. or 2 C. Ericson 1999. Fault Tree Analysis Outline n Overview n History n Basic Process n Definitions n Construction n Mathematics n Evaluation n Pitfalls n Rules n Examples 3 C. Ericson 1999. Fault Tree Analysis FTA Overview 4 C. Ericson 1999. Introduction To design systems that work correctly we often need to understand and correct how they can go wrong.. Dan Goldin, NASA Administrator, 2000. FTA identifies, models and evaluates the unique interrelationship of events leading to : Failure Undesired Events / States Unintended Events / States 5 C. Ericson 1999. FTA - Description l Tool n evaluate complex systems n identify events that can cause an Undesired Event n safety, reliability, unavailability, accident investigation l Analysis n identifies root causes n deductive (general to the specific).
lDesign Phase nFTA should start early in the program nThe goal is to influence design early, before changes are too costly nUpdate the analysis as the design progresses nEach FT update adds more detail to match design detail nEven an early, high level FT provides useful information lOperations Phase nFTA during operations for root cause analysis
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