Adaptive simulation for failure identification in the Advanced Lead Fast Reactor European Demonstrator

The results confirm that the adaptive simulation framework proposed is effective in identifying critical regions of operation with a limited number of calls to the computationally expensive model. The time of occurrence and magnitude of the failures of the components of the control system are identified as key factors to characterize the critical regions. In particular, it is shown that the order of occurrence of the components' failures strongly affects the evolution of the accident scenarios.