Quantification of Severe Accident Scenarios in Level 2 PSA of Nuclear Power Plant with Continuous Markov Chain Model and Monte Carlo Method

摘要

In a level 2 PSA (Probabilistic Safety Assessment), ET (Event Tree) and FT (Fault Tree) analysis methods are generally used for the quantification of the risk in events developing process. However, an interdependency of events and a direct coupling with a mechanistic analysis of physical process are not appropriately taken into consideration by the ET/FT methods.