ABSTRACT
Risk-informed regulation is currently being adopted by many regulatory agencies around the world, in the wake of the US Nuclear Regulatory Commission (USNRC). In fact, the Regulatory Guide 1.174 states that any change in a nuclear plant’s licensingbasismust meet a set of key principles. One of them is worded ‘‘the proposed change maintains sufficient safety margins’’, and it is further explained that the licensee is expected to choose the method for demonstrating such preservation.
