Fault Tree Analysis

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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).

lMore evaluation algorithms and codes were developed lA large number of technical papers were written on the subject (codes & algorithms) lUsage of FTA in the software (safety) community lAdopted by the Chemical industry

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