CEPN is a non-profit organisation created in 1976 to establish a research and development centre in the fields of optimisation of radiological protection and comparison of health and environmental risks associated with energy systems.

This program was initially strongly focused on the development and application of the principle of optimization of radiological protection. Over the past few years, however, the group’s research programme has also been directed towards the involvement of stakeholders in radiological risk assessment and management, and spreading the radiological protection culture.

The studies are undertaken by a group of around fifteen engineers and economists. The research programme is evaluated by a Scientific Council.

The association currently has three members: the French public electricity generating utility (EDF), the Institute of Radiological Protection and Nuclear Safety (IRSN) and the French Alternatives Energies and Atomic Energy Commission (CEA).

CEPN is a a non-profit organisation created in 1976 to establish a research and development centre in the fields of optimisation of radiological protection and comparison of health and environmental risks associated with energy systems.

Recent publications

The ICRP Dialogue initiative on the rehabilitation of living conditions after the Fukushima nuclear accident

Thierry SCHNEIDER (CEPN), Jacques LOCHARD (ICRP), Christopher CLEMENT (ICRP)

4th International Conference on Radioecology & Environmental Radioactive, ICRER 2017, Berlin, 3-8 September 2017.



In its recommendations for the protection of people living in long term contaminated areas, the International Commission on Radiological Protection (ICRP) emphasizes the importance of directly involving the affected population and local professionals in the rehabilitation of living conditions. Authorities and experts creating conditions and providing means for empowerment of the population is key to this involvement. In this context ICRP, together with Radiation Safety Forum Japan, began the ICRP Fukushima Dialogue Initiative in November 2011 to transfer experience from communities affected by Chernobyl, facilitate discussions between stakeholders, and deeply understand the challenges in order to improve future ICRP recommendations.

Materials and methods

This initiative has brought together: local residents and professionals; representatives of villages, towns, the prefecture, national agencies, NGOs, and other Japanese organisations; representatives of Belarusian, Norwegian, and French organisations with direct experience in managing long-term consequences of the Chernobyl accident; and, representatives of international agencies. Together, they find ways to respond to the challenges of the long-term rehabilitation of living conditions in areas affected by the Fukushima Daiichi nuclear power plant accident.


The Dialogue confirmed the human dimensions that had been found after Chernobyl: the loss of control over everyday life, the apprehension about the future, particularly that of children, the disintegration of family life and of the social and economic fabric and, the threat on the autonomy and dignity of the affected people. However, through their testimonies and reflections the Dialogue participants have shed light on this complexity and brought words to better describe it. They gradually develop a rich narrative about their experiences.

The Dialogue re-emphasized the crucial role of measurements to engage stakeholders and pointed out the need: to characterize as soon as possible the initial situation; to follow the evolution of the radiological situation and to adapt the protection strategy accordingly; and, to ensure vigilance in the long term.

It confirmed the importance of places of dialogue between experts and the affected population to develop practical radiological protection culture. It also showed that once people have accessed to the practical radiological protection culture they use dose criteria as benchmarks to make their own decisions (self-help protection actions).

Like in Belarus the Dialogue revealed the difficulty in the recovery phase to establish mechanisms to favour cooperation between all concerned stakeholders: authorities, experts, professionals and the population at the local, regional and national levels. It also confirmed that the protection of children, which is a shared concern of families in Belarus as in Japan is not without drawbacks: restrictions on outside activities, body gain weight, disruption of schooling… Finally the Dialogue lighted the key role of the transmission of past experience (Chernobyl) and the solidarity of outsiders.


The objective of the presentation is to share the experiences and main lessons of the 16 dialogue meetings held between November 2011 and March 2017 at various locations in the Fukushima Prefecture.


Download the presentation

Exhibitions / Projects

Vous avez dit Radioprotection ?

Vous avez dit Radioprotection ?

Did you Say Radiation Protection? Stories of X-Rays, Radioactivity, etc …” is a traveling exhibition devoted to radiation protection, that is to say all the means to protect workers, the public and the environment from potentially harmful effects of X-rays and of radioactivity.

Rayons Santé

Rayons Santé

Rays and Health” is a traveling exhibition that aims to educate the general public on the uses of X-rays and radioactivity in medicine by highlighting the expected benefits but also the risks. Several topics are discussed to encourage caregivers and patients to have a reasoned and cautious approach in order to make the best use of X-rays and radioactivity for health.

ETHOS in Belarus

ETHOS en Biélorussie

Le projet européen ETHOS avait pour but d’améliorer durablement les conditions de vie des habitants des villages dont la vie quotidienne a été fortement affectée par la présence à long terme de contamination radioactive à la suite de l’accident de Tchernobyl. Il s’agissait d’une nouvelle démarche pluridisciplinaire basée sur une implication forte de la population dans l’évaluation et la gestion du risque radiologique en concertation avec les autorités locales, régionales et nationales et des experts biélorusses.