Treatment of Common Cause Failures. The Nordic Perspective -- Classification of Multiple Related Failures -- Design Defences against Multiple Related Failures -- Design-Related Defensive Measures against Dependent Failures - ABB ATOM's Approach -- Design Defences against Common Cause/Multiple Related Failure -- Measures Taken at Design Level to Counter Common Cause Failures. A Few Comments Concerning the Approach of EDF -- Analysis Procedures for Identification of MRF's -- Dependent Failure Modelling by Fault Tree Technique -- Treatment of Multiple Related Failures by MARKOV Method -- Parametric Models for Common Cause Failures Analysis -- Estimation of Parameters of Common Cause Failure Models -- Pitfalls in Common Cause Failure Data Evaluation -- Experience and Results of the CCF-RBE -- Analysis of CCF-DATA-Identification. The Experience from the Nordic Benchmark -- Some Comments on CCF-Quantification. The Experience from the Nordic Benchmark -- Analysis of Common Cause Failures Based on Operating Experience: Possible Approaches and Results -- Multiple Related Failures from the Nordic Operating Experience -- The Use of Abnormal Event Data from Nuclear Power Reactors for Dependent Failure Analysis -- MRF's from the Analysis of Component Data.