India Commissions Its First Fast Breeder Nuclear Reactor
India has brought a long-delayed but strategically important nuclear project to a key operational milestone
The 500 MWe Prototype Fast Breeder Reactor (PFBR) at Kalpakkam, Tamil Nadu, has now reached criticality, signaling that the reactor core has begun sustaining a controlled fission process.
The development places India among a small group of nations operating fast breeder reactor technology at this scale.
Indian Prime Minister Narendra Modi announced the milestone on X, framing it as a major step forward in the country’s nuclear roadmap.
Built for Fuel Multiplication
Unlike conventional reactors, the PFBR is designed to create more fuel than it burns. It runs on mixed oxide fuel, combining uranium-238 and plutonium-239, and uses liquid sodium as a coolant.
This configuration allows the reactor to convert fertile material into fissile fuel during operation.
Engineers consider this capability critical for sustaining long-term nuclear energy programs. The reactor was designed by the Indira Gandhi Centre for Atomic Research and built by Bharatiya Nabhikiya Vidyut Nigam Limited (BHAVINI).
Both operate under India’s Department of Atomic Energy. The project has faced delays and cost escalations since construction began in 2004. Engineers also adapted the fuel-handling system after technical issues with the original transfer mechanism, switching to an alternate approach.
The Strategic Shift To Thorium
India’s nuclear program follows a phased structure to manage limited uranium reserves. Fast breeder reactors anchor the second stage of this plan.
The PFBR is expected to generate fissile material that supports a future transition to thorium-based fuel cycles.
India holds some of the world’s largest thorium reserves, making this shift strategically significant.
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BOB M
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Sounds great, but when are they going to build a proper Recycling Plant or implement a real Garbage disposal system… they live and bath in filthy water and throw garbage in the street, and we’re supposed to be impressed that they are investing in Nuclear? If they want to save the planet, then start by cleaning up first.
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