GO Methodology. Volume 2. Application and Comparison of the GO Methodology and Fault-Tree Analysis

摘要

This report compares two methods for the probabilistic analysis of nuclear safety and system availability, namely the GO and fault tree analysis methods. Each method includes a unique system modeling approach as well as a system of computer codes to quantify the model, determine minimal cutsets, and rank the relative importance of the modeled events. To provide a basis for comparison, several different example systems are analyzed using both methods. To analyze the resultant GO models, the GO-FF-EE code series is used; for fault tree analysis, the reliability analysis system (RAS) is employed. An alternative application of the GO method to event tree analysis and quantification is also explored. Finally, conclusions are drawn from the comparison study with emphasis on the practical aspects of the overall capabilities, features, and limitations of the two methods. (ERA citation 08:046315)