He was the CEO until 2000, when it became AEi Systems LLC . In his current position at AEi, Sandler is responsible for the design, worst case analysis, reliability analysis, and FMECA analysis of satellite and high-reliability power electronic systems.
22.
After the Challenger accident, the importance of PRA and FTA in systems risk and reliability analysis was realized and its use at NASA has begun to grow and now FTA is considered as one of the most important system reliability and safety analysis techniques.
23.
The probabilities for the human reliability analysis event tree ( HRAET ), which is the primary tool for assessment, are nominally calculated from the database developed by the authors Swain and Guttman; local data e . g . from simulators or accident reports may however be used instead.
24.
Remark : For more complete scenario modelling another type of Reliability analysis may be considered, for example fault tree analysis ( FTA ); a " deductive " ( backward logic ) failure analysis that may handle multiple failures within the item and / or external to the item including maintenance and logistics.
