​IGORR : International Group on Research Reactors

Dear colleagues,


I would like to thank all the organizers, especially Amber Johnson as local meeting host and Gilles Bignan as IGORR chairman, for the very successful joint TRTR-IGORR meeting last week (June 18th to 23rd). Almost 200 participants representing a significant part of the world's nuclear research reactor fleet, nuclear regulators and representatives of nuclear industry were discussing latest topics of general but also very detailed technical interest.​

​​​​​The presentations and papers of this conference are available on this link.

During the conference the steering committee voted for new chairman and vice-chairman. After fourteen years as chairman, Gilles Bignan anticipated his retirement from CEA and was no longer candidate as chairman. As new chair, Axel Pichlmaier (FRM II, Germany) was elected and Sean O'Kelly (ATR, USA) as vice-chairman. A special “Thank you" goes to Gilles for his years of dedication and success for IGORR.


The next IGORR conference is planned to be held in June 2025 Mito, Japan, hosted by JAEA. I thank the local organization and Masaji Arai for their willingness to host the next conference. It is foreseen to have also an embedded IAEA technical meeting.


All the Best


Dr. Axel Pichlmaier

IGORR chairman


e-mail : axel.pichlmaier@tum.de

Credit : University of Maryland
Credit : University of Maryland

Next IGORR conference ! Save the Date and book your calendar 


Dear colleagues,

I am pleased to announce that the next IGORR conference will be host by the university of Maryland in June 2023 (from 18th to 23rd June).

The IGORR conference will be held in collaboration with the US-TRTR domestic network of research reactors.

The call for abstracts is open until end of March.

For more information please go to the TRTR site.

All the Best

Dr Gilles Bignan

IGORR chairman

e-mail : gilles.bignan@cea.fr

The IGGOR 19th was organised by RRFM (​European Research Reactor Conference) and IGORR (International Group Operating Research Reactors)


It was held from in JORDAN from 24th to 28th march 2019.

For more information, see the RRFM/IGORR 2019 Conference Website.




The  IGGOR 18 th 
was organised by ANSTO (Australian Nuclear Science and Technology Organisation)

and was combined with an IAEA technical meeting. 
It took place from 3th to 7th december 2017 in Sydney, Autralia.


Dr Gilles BIGNAN
IGORR Chairman


See proceedings and presentations


Page d'accueil (FR) 


IGORR Steering Commitee Members List

AUSTRALIA : Mark Summerfield (ANSTO)

AUSTRIA : Petr Chakrov, Danas Ridikas  (IAEA)

ARGENTINA : Herman Blaumann (CNEA) - Nestor Di Lorenzo (INVAP)

BELGIUM : Steven Van Dyck (SCK.CEN)

CANADA : Christopher Haysel (McMaster University)

CHINA : KE Guoto (CIAE) - Xinxin Lu (INET)

FRANCE : Gilles Bignan (CEA) - Claude Pascal (AREVA-TA)

GERMANY : Axel Pichlmaier (TUM)

JAPAN : Masaji Arai (JAEA)

JORDAN : Khalifeh Abu-Saleem  (JAEC)

RUSSIA : Alexander Tuzov (ROSATOM-RIAR) membership temporarily suspended

SOUTH KOREA : In-Cheol Lim, Sangik Wu(KAERI)

USA : Sean O'Kelly(INL) – Chris Bryan (ORNL) - Lin-wen Hu (MIT) - Ayman Hawari (NCSU)​