IRSN, Institut de radioprotection et de sûreté nucléaire

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Enhancing Nuclear Safety

  • Chernobyl, 35 years later

    ​35 years after the Chernobyl nuclear accident, we review the situation with four information notes​.​​


  • Fukushima, ten years later: our special issue

    ​​This accident, like those before it, has led IRSN to conduct extensive research and take action to enhance safety at nuclear facilities and radiological protection of people and the environment. We must do everything within our power to prevent accidents, even though there are no guarantees that they will not occur. In this special edition of Repères, we review the situation.

    Read our special issue

  • Anticipation and resilience


    ​​What can be learned from the accident of the Fukushima Daiichi nuclear power plant to make nuclear facilities more robust and able to withstand extreme events, to improve post-accident management, and more generally to progress in risk management​?

    Download our report "Anticipation and resilience: considerations a decade after the Fukushima Daiichi accident"

  • Kotoba, Dialogues in Fukushima


    ​​​​​How to respond to the daily challenges of long-term rehabilitation of living conditions in the territories affected by the accident at the Fukushima Daicchi nuclear power plant ?


    Consult our long form

  • Health consequences of a nuclear accident


    ​​​Numerous research programs and epidemiological studies were and are being conducted on the health consequences for first responders, workers, and affected populations following the Chernobyl accident in 1986 and the Fukushima Daiichi accident in 2011. This in-depth feature provides a summary of these studies.

    Read our in-depth content

  • Annual report 2019

    ​​​The annual report offers a comprehensive panorama of the year’s key events.





    IRSN – Institute for Radiological Protection and Nuclear Safety – is the French national public expert in nuclear and radiological risks.

    As a research and expert appraisal organization, IRSN contributes to the implementation of public policies concerning nuclear safety and security and health and environmental protection against ionizing radiation.



  • Nuclear Safety

    Nuclear safety


    IRSN contributes to the safety of existing and future nuclear facilities through a wide range of activities: examining the files submitted by Operators of facilities in operation or under construction, supporting inspection teams from the French safety authority, contributing to the process of updating national and international regulations, developing research programs regarding the prevention of accidents...




    Radiation protection

    With ionizing radiation being found in such wide-ranging applications, radiation protection for workers and the public is an essential aspect of IRSN’s activity.


    IRSN is responsible for performing radiological monitoring of the environment throughout France, carries out research and analysis to better understand the exposure of workers exposed to radiation, and works to improve the conditions of patient exposure.



    Emergency, post-accident situations


    In the event of an incident or accident involving sources of ionizing radiation, IRSN provides guidance to public authorities on the technical, public health and medical measures to be taken to protect the population, workers and the environment, while restoring safety at facilities. IRSN's emergency response center can be called in at all times.



    Security and non-proliferation


    IRSN contributes to national and international efforts to control nuclear and sensitive materials and protect facilities against malicious acts, through the enforcement of treaties on control of nuclear and sensitive materials, and the escort of international and national inspection teams.



A global partner

North & South America

51 partnerships with American, Canadien and Cuban organizations.


Contracts and cooperations with NRC, DOE...


Africa & the Middle-East

3 partnerships with local authorities.


Contracts with NNR, FANR, STEG, CNESTEN...


Asia & Oceania

39 agreements with organizations from 6 countries.


European Union

153 agreements with organizations from 19 countries.


Contracts with BNRA, the Dutch Ministry of Economic Affairs, Agriculture and Innovation, GEN-Energija...


Outside European Union

42 partnerships with organizations from other European countries.


Contracts with SNRIU, Novarka...


IRSN  is a global player with 329 active cooperation agreements and contracts in 47 countries.


As a technical safety organization (TSO), IRSN is also operating scientific partnership and providing scientific cooperation and services through agreements with international organizations, and is a founding member or partner in 14 organizations and networks.

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Fields of activity

IRSN contributes to the safety of existing and future nuclear facilities, and to radiological monitoring of the national territory and workers exposed to ionizing radiations.

IRSN offers its expertise and services in nuclear safety, human radiation protection and protection of the environment to authorities and industrials across the world.


IRSN is also an active partner in :

  • Riskaudit a jointly-owned subsidiary of IRSN and its German counterpart GRS, for international technical assessments >Riskaudit website
  • Enstti Economic grouping composed of Bel V (Belgium), IRSN (France) and LEI (Lithuania), Enstti is the training and tutoring Institute that transfers the knowledge and know-how of the European nuclear safety organizations >Enstti website


IRSN’s research focuses not only on acquiring new scientific knowledge, but also on developing technical tools required to control risks and help expand the Institute's expertise capabilities. These programs are adapted to take into account normative, regulatory, technological, industrial and social issues.