Review on Cortex by Mattia Scaroni

i believe soon this will represent an increasingly important challenge. Over 60% of the current fleet of nuclear reactors is composed of units that are more than 30 years old. As a result, operational problems are expected to be more frequent. In addition, the conservatism previously applied to the evaluation of safety parameters has been greatly reduced, thanks to the increased level of fidelity achieved by the current tools modelling the behaviour of nuclear reactors. Therefore, nuclear reactors are now operating more closely to their safety limits. Operational problems may be also accentuated by other factors, such as the use of advanced high-burnup fuel designs and core loadings.