ABSTRACT
Reliability analysis aims at rational treatment of the uncertain failure behaviour of a system. Quantities entering the analysis include time to failure, number of failures and fraction of time a component or system resides in states of success or failure. Risk analysis offers a systematic framework for analysing hazards/ threats and their potential consequences, as well as the robustness of a system and its barriers. In a safety and security context, examples of events of interest are fire, explosion, loss of containment and terrorist attack, with examples of consequences being the number of fatalities, the restitution time and economic loss.
