The Belgian Nuclear Research Centre SCK•CEN requested approval from the Federal Agency for Nuclear Control (FANC) to begin operations of its BR2 research reactor with LEU fuel.

The reactor so far has been using HEU fuel with 93% enrichment. The material has been supplied by the United States. The most recent export license to ship the material to Belgium was approved in May 2023. At the time, the material was supplied as fuel assemblies manufactured by U.S. company Babcock & Wilcox.

According to SCK•CEN, three LEU fuel elements were tested in the reactor in 2023. (World Nuclear News reports that three Lead Test Assemblies were delivered in 2025).) If approved, the LEU fuel would be manufactured by French company Framatome.