ABSTRACT
Martorell et al., (2006) discuss the need of a complementary use of the deterministic and probabilistic analyses in the context of the risk informed decision-making linked to the BDBA analysis in the region of low frequency and minor damage. In current-generation reactors, which rely on active safety systems, existing margins are indeed sufficient to guarantee plant safety under current uncertainties. However, the combination of changes to the licensing bases, e.g. power uprates, extended operating cycles, higher fuel burnup, and uncertainties could reduce the safety margins, in particular for BDBA in this low/minor area, which need to be assessed taking into account uncertainties.
