In its recommendations for the protection of people living in long-term contaminated territories after a nuclear accident, the International Commission on Radiological Protection (ICRP) emphasizes the effectiveness of directly involving the affected population and local professionals in the management of the situation, and the responsibility of authorities at both national and local levels to create the conditions and provide the means favouring the involvement and empowerment of the population. In this perspective, ICRP initiated in the fall 2011 a dialogue between representatives of the Fukushima Prefecture, local professionals, local communities and representatives of Belarusian, Norwegian and French organisations to find ways to respond to the challenges of the long-term rehabilitation of the living conditions in the territories affected by the Fukushima nuclear power plant. After a first series of twelve “ICRP Dialogue” meetings between 2011 and 2015 closed by an international workshop, a group of local stakeholders took over and organized a new series of eight “Fukushima Dialogue” meetings between 2016 and 2018. The article gives an overview of the dialogue meetings initiated by ICRP in Japan after the Fukushima nuclear accident.

Feedback experiences from Fukushima and Chernobyl situations have clearly shown the importance of involving local stakeholders living in contaminated territories for the rehabilitation of their daily life. In this context, this paper aims to better address the role of radiological protection experts in the recovery phase of post-nuclear accident situation, in mainly relying on the analysis of local initiatives implemented in the Fukushima Prefecture following March 2011. In the first part, this paper highlights the various challenges faced by the population living in contaminated territories, i.e., rehabilitation of the living conditions, ensuring a long-term radiological monitoring, developing public health programs. In a second part, this paper discusses to which extent radiological protection experts can help local population to address these challenges, particularly through the implementation of co-expertise processes and the associated ethical issues and values they should embody. The last part of this paper particularly focuses on two current challenges at stake in the Fukushima Prefecture: the dissemination of the co-expertise process to all affected communities, as well as the sustainability of these approaches over time.

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The practical implementation of the principle of optimisation of radiological protection (i.e., ALARA principle) was the subject of two workshops organised in Paris (France) in February 2017 and October 2018 at the initiative of SFRP within the framework of IRPA. The article summarizes the discussions and conclusions of these two workshops. The search for reasonableness was examined in three sectors: nuclear industry, medical practices and existing exposure situations. In all sectors, the optimisation remains a challenge and experience shows that this is implemented through a deliberative process to achieve a reasonable compromise with all informed parties. This issue was further investigated by three working groups − one for each sector – on the basis of cases studies. It emerges that, in complement to the use of classical tools such as cost-benefit analysis, the implementation of the optimisation principle implies a clear identification of the challenges to be met in order to achieve the best protection in the prevailing circumstances. These challenges may be specific to a type of exposure situation and in some cases to a given situation. The process should also well identify the relevant stakeholders and decision-makers to be involved and determine how they will be involved. A proactive process including development of awareness, empowerment and/or training may be needed. This reflexion deserves to be further developed.

Lessons from the Fukushima-Daiichi nuclear power plant accident emphasize the difficulties for restoring the socio-economic activities in the affected areas. Among them, a series of radioligical protection challenges were noted, in particular concerning the protection of employees, the securing of the production and the guarantee provided to consumers of the radiological monitoring of products to restore their confidence. Based on case studies reporting the experience of employers deploying their activities in affected areas, an analysis of these radiological protection challenges has been performed. Characterizing the radiological situation was not always straightforward for the managers. With the help of radiological protection experts, protective actions have been identified and specific efforts have been devoted to provide information to employees and their families helping them to make their own judgement about the radiological situation. Respecting the decisions of employees and developing a radiological protection culture among them have proved to be efficient for restoring the business activities. Continuing or restoring the production not always manageable. It requires to develop dedicated radiological monitoring processes to ensure the radiological protection of workers and the quality of the production. Re-establishing the link with the consumers and organising the vigilance on the long-term were necessary for companies to maintain their production or develop new ones. Deploying a socio-economic programme for ensuring the community resilience in affected areas requires the adoption of governance mechanisms respecting ethical values to ensure the overall objective of protecting people and the environment against the risks of ionizing radiation and contributing to provide decent living and working conditions to the affected communities. It is of primary importance to rely on the involvement of local communities in the elaboration and deployment of the socio-economic activities with due considerations for ensuring the integrity of the communities, and respecting their choices.