From 10 Sep 2018 to 14 Sep 2018 International Centre for Theoretical Physics (Trieste, Italy) hosted Joint ICTP-IAEA International School on Nuclear Waste Actinide Immobilization.
Nuclear waste management is a core issue for sustainable development and long-term viability of nuclear energy as energy supply. The main goal of this school was the dissemination of knowledge on optimal methods of synthesis and study of crystalline and glass-crystalline wasteforms for the immobilization of actinides and other long-lived dangerous radionuclides.
The school brought together researchers from the area of materials science with a focus on crystalline and vitreous materials for nuclear energy. The school assists experts to better understand the wide range and full potential of material science applied to radioactive waste immobilisation and technology tools and methods devoted to immobilisation and properties of crystalline and glass-crystalline materials. Knowledge transfer is facilitated between individuals from developed and developing countries, and can be used to develop further the internationally sponsored development of nuclear waste immobilisation using crystalline and glass-crystalline wasteforms.
Topics of the School were as follows:
• Fundamentals of actinide immobilization;
• Radiation damage effects in actinide-doped crystalline materials and glasses;
• Leach behaviour of actinide-doped ceramics and glasses;
• Advanced materials based on durable actinide host-phases;
• New types of Pu fuel and targets for actinide transmutation;
• Interaction of actinide wastes and geological environment;
• Modelling of actinide migration in geological environment;
• Actinide behaviour during severe nuclear accident (Chernobyl, Fukushima, etc.) and nuclear tests.
Senior researcher of NPPs Decommissioning Department of ISP NPP Andriy Sizov was invited to the School to have a lecture “Actinide Behaviour during severe nuclear accident – Three Mile Island”. The lecture had big interest and started discussion about problems of radwaste management and properties.