HeFASTo is a R&D project of UJV Rez, a. s., under the responsibility of Division of Nuclear Safety and Reliability. Technology development has been done by the GENIV R&D Group of the Division.

The GFR technology R&D has a tradition of more than 10 years in UJV Rez. Since 2012, we have been a full member of V4G4 Center of Excellence consortium, which is responsible for the development of a GFR technology demonstrator ALLEGRO. In 2018, the Technology Agency of the Czech Republic recognized, under one of its program calls, fast reactors as one of the priorities of national nuclear R&D.

Currently, UJV Rez is active in 7 national and 3 international R&D projects dedicated to GFR, leading a significant portion of them.