Advanced Brachytherapy Physics - Vienna 2016

Developed in 1961 at Bell Laboratories by H. A. Watson Launch Control Safety Study for Intercontinental Ballistic Missile Translation of system failure behavior into visual diagram and logic model Visual model portrays system relationships and root cause pathways Logic model provides qualitative & quantitative system evaluation Utilizes Boolean algebra and probability theory FTA popularized by US tragedies: Apollo 1 fire (1967) Three Mile Island , nuclear meltdown (1979), Space Shuttle Challenger (1986) FTA provides top-down risk assessment, FMEA is a bottom-up approach