Reactor BR2 (Belgian Reactor 2) is amongst the most powerful and flexible research reactors in the world. Since its start-up in 1962, the reactor has operated on uranium with pressurised water as coolant and moderator. After maintenance and modernisation operations and IAEA’s SALTO Mission in 2017, BR2 is now permitted to operate until its next periodic safety review in 2026, when a decision on extending its operation for another ten years may be taken.