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Information System on Occupational Exposure (ISOE)


ISOE provides a forum for radiation protection professionals from nuclear electricity utilities and national regulatory authorities worldwide to share dose reduction information and operational experience to improve the optimisation of worker radiological protection at nuclear power plants. ISOE provides its members:

  • A forum for global cooperation amongst utilities to exchange information, experience and good practice in optimisation of worker radiological protection;
  • A “one-stop” information exchange website (www.isoe-network.net) providing registered users access to ISOE products and user information exchange forums;
  • Supported access to global ISOE resources through the ISOE Technical Centres.


ISOE was launched in 1992 by the OECD Nuclear Energy Agency (NEA) to improve the management of occupational exposures at nuclear power plants through the collection and analysis of occupational exposure data and trends, and through the exchange of lessons learned among utility and national regulatory authority experts. Since 1993, the International Atomic Energy Agency (IAEA) has co-sponsored the ISOE Programme, thus allowing the participation of utilities and authorities from non-NEA member countries.

Membership and Organisation

ISOE participation includes nuclear electricity utilities and national regulatory authorities who participate under the ISOE Terms and Conditions.

Official participants include (as of January 2017):

  • 77 Utilities in 29 countries
  • 28 Regulatory Authorities in 26 countries

ISOE operates in a decentralised manner. A Management Board of representatives from all participating countries, supported by the joint NEA and IAEA Secretariat, provides overall direction. Four ISOE Technical Centres (Europe, North America, Asia and IAEA) manage the programme’s day-to-day technical operations. National Coordinators in each country serve as contact points for the transfer of information from and to participants.

ISOE is jointly sponsored by the NEA and IAEA.

Main Activities

Built on a global network of radiation protection professionals from nuclear electricity utilities and national regulatory authorities, ISOE provides the world’s most comprehensive source of experience, information and data for occupational exposure management at nuclear power plants. ISOE provides an operational experience base for identification and assessment of good practices and facilitates the input of operational experience into the development of radiological protection recommendations, standards, etc.

ISOE facilitates global cooperation between utilities, the sharing of experience and the building of linkages between ISOE regions to develop a global approach to ALARA exposure management. ISOE offers its members a variety of relevant resources, including:

  • ISOE Occupational Exposure Database: The world’s largest database on occupational exposure data from nuclear power plants. Includes occupational dose data at the job and task level from 482 reactor units in 29 countries (401 operating; 81 shutdown).
  • ISOE Network Website (www.isoe-network.net): A “one-stop” information exchange website for ISOE members, providing access to ISOE products, resources, and on-line user forums.
  • ISOE Technical Centres: ISOE technical centres support participants through responses to special requests and the organisation of voluntary benchmarking visits for the sharing of good practice in occupational radiation protection between ISOE regions.
  • ISOE International and Regional Symposia: A forum for world-wide experience exchange in ALARA implementation and exposure management. The Symposium are routinely organised in the four ISOE regions and provide a meeting place for radiation protection professionals to discuss current issues in occupational radiation protection at nuclear power plants.
  • ISOE Publications:

    Annual Reports on Occupational Exposure Trends and Country Reports


    Technical Information Sheets

    Expert/Working Group Reports


For more information on the ISOE Program, please visit the ISOE Network website at: www.isoe-network.net

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