scope:

This TR provides guidance on probabilistic risk analysis (hereafter referred to as risk analysis) for the systems composed of electrotechnical items and is applicable to all electrotechnical industries (but not limited) where risk analyses are performed. This TR deals with the following topics from the perspective of risk analysis: - defining the essential terms and concepts; - specifying the types of events; - classifying the occurrences of events; - describing the usage of modified symbols and methods of graphical representation for ETA, FTA and Markov techniques; - suggesting ways to handle the event frequency/rate of complex systems; - suggesting ways to estimate the event frequency/rate based on risk monitoring; - providing illustrative and practical examples.