Minimal cut sets with time dependencies analysis
Pawel Skrobanek · Automatyka/Automatics · 2013
Fault tree analysis (FTA) is o ne of the most frequently used techniques for safety analysis. The result of such an analysis are minimal cut sets (MCSs). Occurrence of all the events from MCS is a necessary and sufficient condition to cause a fault (hazard, dangerous situation). Thus, both the design and implementation of the system should prevent or minimize the probability of such situation inter alia using the knowledge of the MCSs . Standard FT cannot express time dependencies between events. This possibility gives us FT with time dependencies (FTTD). The analysis of the FTTD gives us also MCSs , but extended to the time dependencies as well . This paper proposes a way to create such sets and partial automatization of analysis for specific cases provided.