Prof. Leon Cizelj

Head of Reactor Engineering Division, Jožef Stefan Institute, Slovenia.

President of the European Nuclear Education Network Association since March 2016.

Leon received his Ph.D. in Physics from the University of Ljubljana, Slovenia, in 1993. Since 2010 Leon is heading a research division with 25 researchers specializing in nuclear engineering and nuclear safety research and participating in the technical support activities to the Slovenian nuclear regulatory body.

Leon’s research interests include integrity and ageing of components and materials, especially numerical simulations in structural and fracture mechanics, including micromechanics. Leon is also professor of nuclear engineering at University of Ljubljana, Slovenia.

Dear members, friends and supporters of ENEN Association!

The development of knowledge and technologies related to nuclear fission and fusion has been one of the major achievements of the mankind. Nuclear fission provides for about 30% of the electricity generated in the European Union. As the most abundant zero carbon energy source it provides for almost half of the European zero carbon electricity. Many significant contributions to science and technologies beyond nuclear power are known and widely applied today. Examples include diagnostics through imaging and variety of therapies in medicine, sterilization in food processing, and diagnostics in industry, forensics, archeology and geology, among others.

The expected lifespan of nuclear power plants, including commissioning and decommissioning, extends over a century. Disposal of radioactive waste from power and non-power applications extends this commitment beyond a century. Safe, competitive and sustainable use of nuclear technologies is therefore based on the long-term commitment of all stakeholders to vigorously participate in the quest for new and management of existing knowledge. Securing further developments in education, training, skills, competences, attitudes and cultures of personnel involved in industry, academia and regulatory organizations, is at the core of the values and efforts that the ENEN Association stands for.

Since its launch in 2003, the ENEN has been successfully growing into the focal point of professionals concerned with further development of nuclear education, training, and knowledge management. The professional communities involved in ENEN today include nuclear engineering, radiation protection, radioactive waste management and nuclear medicine and may grow further through strengthened cooperation with the nuclear fusion community.

The strategic goal of the ENEN Association is to preserve, maintain and further develop the nuclear knowledge for the present and future generations. ENEN is proud to facilitate the commitment and enthusiasm of its members and other nuclear stakeholders to work together towards this mutual strategic goal.

Further information about our initiatives and activities is available for your consideration and critical review in our website. We would be pleased to provide any further information you might require. And, last but not least, we would welcome your active involvement in our activities.

Prof. Leon Cizelj

European Nuclear Education Network Association

Executive Director

Mr. Pedro Diéguez Porras

Industrial Engineer, PMP, MSc.
Executive Director of the European Nuclear Education Network AISBL (Belgium).
Former Secretary General of the Réseau Européen pour l’Enseignement des Sciences Nucléaires – ENEN Association (France).

The European Nuclear Education Network contributes to the society in the preservation and further development of the scientific expertise in the nuclear fields through nuclear Education and Training.

These nuclear fields are: radiation protection, nuclear energy, nuclear medicine, nuclear waste management and geological disposal, industrial and agricultural applications, and finally safe nuclear decommisssioning.

At our core, the ENEN Association aims for the for the safest and most advanced Nuclear science, knowledge and technology in the benefit of humankind.

The ENEN fosters the availability of nuclear knowledge and skills for European engineers and scientists, and promotes the fundamental and applied research.

The ENEN network is the result of the co-operation between universities, research organizations, technical support organizations, regulatory bodies and the nuclear industry. Together we work to preserve and develop the nuclear human capital capacity in Europe.

I believe in the key role of nuclear science plays in the future of a sustainable development of Europe and its technological leadership in the world. In collaboration with the rest of the international community we will contribute to enable and foster our most gifted young people to participate in the solution of the worlds’ big challenges.

Pedro Diéguez Porras

Executive Director
European Nuclear Education Network


Since March 2018, the Board of Governors of ENEN is composed by the representatives of ENEN members who are elected by the General Assembly.
Board of Directors of the European Nuclear Education Network AISBL for 2018-2019 is:


Prof. Leon Cizelj President Jozef Stefan Institute, Slovenia
Prof. Joerg Starflinger Vice President Universitaet Stuttgart, Germany
Prof. Filip Tuomisto Director Aalto University, Finland
Prof. Behrooz Bazargan-Sabet Director Université de Lorraine, France
Mr. Keith Allen Director Westinghouse, Belgium
Mr. Thierry Desaleux Director INSTN-CEA, France
Prof. Csilla Pesznyák Director Budapest Univ. of Technology and Economics, Hungary
Dr. John Roberts Director The University of Manchester, United Kingdom
Dr. Tzanka Kokalova Wheldon Director University of Birmingham, United Kingdom
Dr. Michèle Coeck Director SCKCEN, Belgium

Management of the European Nuclear Education Network AISBL:

  • Mr. Pedro Dieguez Porras – Executive Director
  • Dr. Gabriel Lazaro Pavel – Project Manager and Operations Coordinator