This regulatory guidance booklet describes the characteristics of an effective nuclear
safety regulator in terms of roles and responsibilities, principles and attributes.
Each of the characteristics discussed in this report is a necessary feature of an
effective nuclear safety regulator but no one characteristic is sufficient on its
own. It is the combination of these characteristics that leads to the effectiveness
of a nuclear regulatory body. The report provides a unique resource to countries with
existing, mature regulators and can be used for benchmarking as well as training and
developing staff. It will also be useful for new entrant countries in the process
of developing and maintaining an effective nuclear safety regulator.