IRSN, Institut de radioprotection et de sûreté nucléaire

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Scientific collaboration

The Eurados network

The European Radiation Dosimetry Group (EURADOS) supports scientific and technical research into ionising radiation dosimetry in Europe and internationally. The main objectives of this permanent network of experts, and reference laboratories in radiation protection, radiobiology, diagnostics and radiation therapy, are to harmonise existing working practices and implement training in ionising radiation dosimetry.

Organisation and activities

More than 50 Voting Members and more than 250 Associate Members make up the network by contributing to some ten working groups supervised by the EURADOS Council.


EURADOS focuses on the following areas:

  • retrospective dosimetry,
  • individual monitoring for internal and external exposures,
  • environmental radiation monitoring ,
  • diagnostic and interventional radiology,
  • nuclear medicine,
  • radiation therapy,
  • computational dosimetry.


Network map

As part of its working groups activities and the annual meeting (AM), the  key event of the network, EURADOS organises periodically:

  • winter schools: retrospective dosimetry, effects of low doses of ionising radiation, etc.
  • scientific meetings: physical and biological dosimetry, dosimetry for medical applications, uncertainty in dosimetry, etc. EURADOS organises each year a network meeting bringing  together with its general assembly, a winter school and a workshop on topics of particular importance selected by the council;
  • intercomparison campaigns: some twenty intercomparisons have already been organised on topics ranging from neutron spectrometry, internal dosimetry, individual monitoring of external radiation exposure, etc.;
  • teaching sessions: radiation measurement methods, internal dosimetry, etc.
    EURADOS regularly produces reports (research results, publications and papers presented at the annual meeting, etc.) and is also involved at the European level as a specialist in the fields of ionising radiation dosimetry.



IRSN’s contribution

IRSN is a Member of EURADOS and is represented by Jean-François Bottollier-Depois. IRSN also contributes to the funding the network. In addition to its General Assembly, the council is the executive body of EURADOS; in chronological order, council members who have served on behalf of IRSN include Guy Portal, Alain Rannou, Teresa Bolognese and, currently, Jean-François Bottollier-Depois.

For scientific work, IRSN is active in nearly all of EURADOS’s working groups. This primarily involves the external and internal dosimetry departments (SDE and SDI) and the Environmental Sample Processing and Metrology Department (STEME).

IRSN has been responsible for coordinating the distribution of news about EURADOS since 1996 and organised its annual meetings in Paris in 1992 and 2008.

IRSN has also presided over several working groups:

  • from 1990 to 1996, Roger Médioni chaired WG9 on criticality accident dosimetry,
  • from 1990 to 2004, Pascal Pihet chaired WG10 on basic physical data and characterisation of gas ionisation systems,
  • from 2006 to 2010, Jean-François Bottollier-Depois chaired WG5 on air crew dosimetry.


Between 1999 and 2004, which included IRSN’s chairmanship of EURADOS, IRSN led the discussion resulting in the network’s current form. The aim of this analysis was to move towards a reference network that was more independent of the European Commission (EC) while, from the beginning, its funding, objectives and activities had been almost exclusively linked to the EC’s Framework Programme for Research and Technological Development. EURADOS is now an independent network funded by its members, partners and activities that continues to collaborate closely with the EC as part of targeted projects and invitations to tender.



Key events for EURADOS


Along with the German PTB  and Helmholtz Centre, Italian ENEA, British HPA and Dutch TNO, IRSN has played a key role in the creation of the network and remains very involved in its activities and management. Stimulated by the actions of the International Commission on Radiation Units and Measurements (ICRU) and the European Commission, the forerunner of EURADOS was the Collection and Evaluation of Neutron Dosimetry Data (CENDOS) committee.


1976 - first meeting of CENDOS in Fontenay-aux-Roses
1981 - registration of EURADOS constitution in the Netherlands
1991 - revision of constitution
1992 - first project, funded as part of the Third Framework Programme (Euratom)
1994 - 12th General Assembly, held in Strasbourg
1997 - first integration attempt: joint action by EULEP-EURADOS-UIR, funded as part of the Fourth Framework Programme (Euratom) under the coordination of PTB
1997 - first publication of the Newsletter jointly edited by EULEP-EURADOS-UIR 
1999 - annual meeting in Braunschweig (PTB) and creation of a working group dedicated on the development of EURADOS
2001 - Pascal Pihet (IRSN) elected chairperson. Helmut Schuhmacher (PTB) is chairperson since 2004.
2001 - Radiation Dosimetry Network project funded as part of the Fifth Framework Programme (Euratom) and coordinated by IRSN
2001 - 13th General Assembly, Braunschweig (PTB), revision of constitution
2001 - creation of first website
2005 - Conrad coordination action funded as part of Sixth Framework Programme (Euratom) and coordinated by PTB
2008 - 20th General Assembly in Paris and approval of revised constitution, new statutes and registration of EURADOS in Germany (creation of EURADOS e.V.)
2009 - approval of rules of procedure for EURADOS
2012 - installation of current website

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Further informations






The EURADOS website


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