India’s Indigenously Built Prototype Fast Breeder Reactor at Kalpakkam, TN Achieves CriticalityOn...

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Rojgar4u Team April 08, 2026
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Rojgar4u
India’s Indigenously Built Prototype Fast Breeder Reactor at Kalpakkam, TN Achieves Criticality
On April 6, 2026, India’s 1st indigenously developed  500 Megawatt electric (MWe) Prototype Fast Breeder Reactor (PFBR) at Kalpakkam in Tamil Nadu (TN), successfully achieved first criticality, marking the start of a controlled nuclear fission chain reaction.

  • This achievement will give a significant boost to the crucial second stage of India’s 3-stage nuclear programme.

About PFBR:
Type of Breeder: It is a sodium-cooled, pool-type Fast Breeder Reactor (FBR) that produces more fuel than it consumes.
Designed by: It was designed by the Indira Gandhi Centre for Atomic Research (IGCAR), a Research & Development (R&D) centre under the Department of Atomic Energy (DAE).
Developed by: PFBR, developed and operated by Bharatiya Nabhikiya Vidyut Nigam Limited (BHAVINI), a Central Public Sector Enterprise (CPSE) which works under the DAE.
Fuel Used: For the initial phase, FBR will operate using Uranium-Plutonium Mixed Oxide (MOX) fuel.
Breeding Process: The core of the reactor is surrounded by a blanket of Uranium-238 and fast neutrons convert these fertile Uranium-238 into fissile fuel.
Significance: Once operational, India will be the second country after Russia to run a commercial Fast Breeder Reactor.

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