IAEA Research Project Strengthens Understanding of Advanced Fuel Behaviour

The CRP led to the production, testing and analysis of several ATF coated cladding options, generated extensive experimental datasets and strengthened the capabilities of fuel behaviour modelling through comprehensive benchmarking activities.

Through collaborative research, sharing experimental data and exchange of best practices in fuel behaviour modelling, the CRP advanced understanding of ATF design, fabrication and in-pile behaviour, thereby increasing the technology readiness of candidate ATF materials. The project also delivered critical feedback and validated methodologies that will guide the next stages of ATF qualification and licensing. An IAEA Technical Document detailing the results of the research activities carried out by the CRP partners is under preparation.

A total of 21 countries participated in this CRP, including Argentina, Belgium, Belarus, Brazil, Bulgaria, Canada, China, the Czech Republic, France, Germany, Hungary, the Islamic Republic of Iran, Italy, Japan, Poland, the Republic of Korea, Russian Federation, Slovakia, Spain, the United Kingdom and the United States of America, as well as the European Commission.

To build on the results of this successful project, another CRP is planned to begin by the end of 2026. The new project will expand the focus to include conditions for high burnup fuels and issues specific to fuels designed for small modular reactors.