Track 2 Session 11
10:30 to 11:30 a.m. Thursday June 11, 2009

The Application of a Residual Risk Evaluation Technique Used for Expendable Launch Vehicles

This session presents an application of a Residual Risk Evaluation Technique (RRET) for Expendable Launch Vehicles (ELVs). RRET was developed by Kennedy Space Center’s Safety and Mission Assurance (S&MA) Launch Services Division. This technique is one of many procedures used by S&MA to evaluate system reliability with respect to residual risks for each ELV mission. RRET is a straightforward technique that incorporates the proven methodology of risk management, fault tree analysis and reliability prediction. RRET derives a system reliability impact indicator from the system baseline reliability and the system residual risk reliability values. The system reliability impact indicator provides a quantitative measure of the reduction in the system baseline reliability due to the identified residual risks associated with the designated ELV mission. This presentation includes an example to provide detailed insight into the application of RRET.