Welcome to the ISOE Website

The Information System on Occupational Exposure (ISOE) was created in 1992 to provide a forum for radiation protection professionals from nuclear electricity licensees and national regulatory authorities worldwide to share dose reduction information, operational experience and information to improve the optimisation of radiological protection at nuclear power plants.

ISOE is jointly sponsored by the OECD Nuclear Energy Agency and the International Atomic Energy Agency.

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Details

16-17 September 2026

Hokkaido Prefecture, Japan

Organized by the ISOE Asian Technical Centre (ATC) and Nuclear Safety Research Association (NSRA).

> Dates:
Wednesday, 16 September – Afternoon
Thursday, 17 September – Full day
> Venues:
Day 1: Iwanai Kogen Hotel in Iwanai Town, Hokkaido Prefecture
Day 2: Tomari Nuclear Power Plant and related facilities, Hokkaido Electric Power Co., Inc.

Participation Fee: Free of charge

Working Language: Korean and Japanese
Note: Korean-Japanese consecutive interpretation will be available

Contact: Ms. OTSU Natsuko

Details

16-17 June 2026
Helsinki, Finland

Organised by the ETC Technical Centre in collaboration with Fortum, TVO and STUK.

> Program    

> Registration Form (online registration)    
   (in case of problem with online registration, please contact us at the following address: isoe@cepn.asso.fr)

> Booth Request Form (online registration)     

> Accommodation
   Hotel rooms can be booked at the venue where the symposium will take place.
   Participants can reserve a room by emailing the reception at reception@hanaholmen.fi, 
   quoting the reference number: STUK2026
   Price: 120€ Sun-Mon and 154€ for the rest of the week. The accommodation includes hotel breakfast, sauna & pool.
   Cutoff date for special rate is 10 May 2026.

  • RPM and Regulatory Body Meetings on June 15, 2026 (free of charge)
    Please contact the relevant contact-person for more information and registration.

    Radiation Protection Managers Meeting
    Contact-person: 
    Timo KONTIO, Loviisa NPP - Email: timo.kontio@fortum.com

    Regulatory Body Representatives Meeting
    Contact-person: 
    Veli RIIHILUOMA, STUK – Veli.Riihiluoma@stuk.fi
  • Technical visit to Olkiluoto NPP on June 18, 2026
    Number of participants is limited.

Contact: Lucie D'ASCENZO 

Details

13-15 January 2026
Clearwater Beach, USA

Organised by the North-American Technical Centre (NATC)

> Symposium Agenda

> RPM meeting Agenda – RPM meeting Cover invitation letter

Contacts: Amy KEEP or David MILLER

Details

The following publications are available:

Details

A new section presenting the RP Events has been created in RP Library.

Following a request from some ISOE members wishing to share radiation protection events during training sessions, ETC has extracted a list of RP Events from various documents available on the site (Presentations during Management Board, Symposium Proceedings, ISOE Annual Reports, OpEx Reports), for the period 2000-2020.

RP Events are presented in a table providing a short description of the event and where it occurred (Country, Plant). It is possible to directly open from this page the associated reference document using the appropriate link.

In addition, a first attempt of RP Events description specifying Causes, Consequences, Corrective actions are also given in an Excel file.

Information are restricted to ISOE Members.            

Next ISOE meetings

  • WGDECOM meeting
    31 March-2 April 2026 (Tours, France)
  • ISOE Bureau meeting
    2 June 2026 (virtual meeting)
  • 36th ISOE Management Board
    8-10 December 2026 (OECD NEA, France)

Upcoming Events

2026 ISOE International Symposium
16-17 June 2026, Helsinki, Finland

2026 ISOE ATC Benchmarking Exchange for Radiation Protection
16-17 September 2026, Hokkaido, Japan

For ISOE Members - Submission Deadlines

  • Country reports are expected by end of June 2026
  • ISOE Questionnaires are expected by end of September 2026