IAEA Director General Rafael Grossi confirmed that India's Prototype Fast Breeder Reactor has attained criticality [1, 2].
This milestone represents a significant step in India's effort to expand its energy independence and secure a sustainable long-term power supply. The transition to fast breeder technology allows a country to produce more fuel than it consumes, potentially unlocking vast thorium reserves.
Speaking with NDTV Science Editor Pallava Bagla in Vienna, Austria, Grossi said India's nuclear roadmap is logical and serious [1, 2]. He said that the country is playing an increasingly prominent role in the global nuclear sector [1, 2].
The Prototype Fast Breeder Reactor is a central component of India's multi-stage nuclear power program. By achieving criticality, the reactor has reached a state where the nuclear chain reaction is self-sustaining, a critical technical hurdle for the project.
Grossi said that India's approach to nuclear energy development reflects a disciplined strategy. He said the importance of these advancements for the broader goal of clean energy production and global nuclear safety standards [1, 2].
The IAEA continues to monitor and support the implementation of safety protocols as India scales its nuclear capabilities. The agency's recognition of the current roadmap suggests a high level of confidence in the technical and regulatory frameworks India has established to manage its nuclear fleet [1, 2].
“India's Prototype Fast Breeder Reactor has attained criticality”
The attainment of criticality in the Prototype Fast Breeder Reactor signals that India is moving from theoretical planning to operational reality in its second stage of nuclear expansion. By validating this roadmap, the IAEA is acknowledging India's transition from a regional player to a global leader in nuclear technology, which may facilitate further international cooperation and technology transfers.



