Context:
India’s indigenous Fast Breeder Reactor (FBR) at Kalpakkam has achieved criticality, marking a major advancement in the three-stage nuclear power programme and India’s ambition for thorium-based energy independence.
Key Highlights:
- Reactor Details
- 500 MWe Fast Breeder Reactor at Kalpakkam.
- Uses MOX (Mixed Oxide) fuel and U-238 blanket.
- Breeds more fuel via nuclear transmutation.
- Strategic Milestone
- India becomes second country after Russia to operate commercial FBR.
- Crucial for transition from uranium to thorium cycle.
- Nuclear Capacity Expansion
- Target: 22,400 MWe nuclear capacity by 2032.
- Plan to build 10 PHWRs in fleet mode.
- Proposal for 6 additional FBRs (600 MWe each).
Relevant Prelims Points:
- Criticality:
- Self-sustaining nuclear fission reaction
- Fast Breeder Reactor (FBR):
- Produces more fissile material than consumed
- MOX Fuel:
- Mixture of plutonium and uranium oxides
- Nuclear Transmutation:
- Conversion of one isotope into another
- Closed Fuel Cycle:
- Reprocessing spent fuel to reuse fissile material
Relevant Mains Points:
- Three-Stage Nuclear Programme:
- Stage 1: PHWRs (Uranium)
- Stage 2: FBRs (Plutonium breeding)
- Stage 3: Thorium (U-233 cycle)
- Energy Security:
- Efficient use of limited uranium resources
- Utilization of abundant thorium reserves
- Technological Significance:
- Indigenous capability → strategic autonomy
- High-end nuclear technology mastery
- Economic and Environmental Impact:
- Provides low-carbon, reliable baseload power
- Supports energy transition goals
- Challenges:
- Delays due to technological complexity
- Safety concerns and high capital costs
- Way Forward:
- Accelerate FBR deployment and thorium research
- Strengthen nuclear safety and regulatory frameworks
- Promote public acceptance and transparency
- Integrate nuclear energy into clean energy strategy
UPSC Relevance:
• GS 3: Science & Technology, Energy
• GS 3: Economy