[en] The approach used in the United States for license renewal (plant operation to 60 years) and subsequent license renewal (plant operation to 80 years) is implemented within a structured regulatory framework that includes regulatory process ''essential elements'' which are integrated to ensure continued safe plant operation. This integrated approach was evaluated by an International Atomic Energy Agency (IAEA) Integrated Regulatory Review Service mission in 2010, in part using the IAEA Periodic Safety Review for comparison. This mission identified only one suggestion related to license renewal: the NRC should incorporate lessons learned from Periodic Safety Reviews performed in other countries as an input to the NRC’s assessment processes. For international regulatory frameworks that do not include these regulatory process ''essential elements'' or similar provisions, use of the license renewal approach followed in the United States may necessitate enhancement of the framework to include activities which achieve similar objectives, in order to ensure continued safe long term plant operation. (author)