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PROTOTYPE FAST BREEDER REACTOR from Vajirao & Reddy Institute

By : Author Desk Updated : 2026-04-06 12:01:16

PROTOTYPE FAST BREEDER REACTOR

  • On 6 April 2026, India achieved a major milestone when the Prototype Fast Breeder Reactor (PFBR) attained first criticality.
  • The reactor is located at Kalpakkam, Tamil Nadu and has a capacity of 500 MWe (Megawatt electrical).
  • It has been built by Bharatiya Nabhikiya Vidyut Nigam Limited.
  • This event marks:
    • The beginning of a sustained nuclear chain reaction
    • India’s entry into Stage 2 of its nuclear programme
This is a historic development in India’s nuclear energy programme and clean energy transition WHAT IS FIRST CRITICALITY?
  • Criticality refers to the stage when a self-sustaining nuclear chain reaction begins inside a reactor.
  • At this point:
    • Neutrons produced = neutrons consumed
    • The reactor becomes operational at basic level
It is the first and most important milestone before full power generation GLOBAL SIGNIFICANCE
  • Once fully operational, India will become:
    • The second country in the world after Russia to operate a commercial Fast Breeder Reactor (FBR)
This gives India a strategic and technological advantage in nuclear energy THREE STAGES OF INDIA’S NUCLEAR PROG THE THREE STAGES Stage 1: Pressurised Heavy Water Reactors (PHWRs)
  • Fuel used: Natural Uranium
  • Output:
    • Generates electricity
    • Produces Plutonium (Pu-239) as by-product
This plutonium is used in Stage 2 Stage 2: Fast Breeder Reactors (FBRs)
  • Fuel used:
    • Plutonium from Stage 1
  • Key Feature:
    • These reactors produce more fuel than they consume
  • The PFBR at Kalpakkam marks India’s entry into this stage
It also helps in producing Uranium-233 from Thorium Stage 3: Thorium-Based Reactors
  • Fuel:
    • Uranium-233 (derived from Thorium)
  • Importance:
    • India has large thorium reserves
This stage will ensure long-term sustainable energy supply Overall Concept
  • The programme follows a closed nuclear fuel cycle
Meaning:
  • Waste fuel is reprocessed and reused
VISION BEHIND INDIA’S NUCLEAR PROGRAM
  • The three-stage nuclear programme was designed by Homi Jehangir Bhabha
  • It is based on:
    • Limited uranium reserves in India
    • Abundant thorium reserves
The aim is to achieve:
  • Energy security
  • Self-reliance in nuclear fuel
PFBR: DETAILED OVERVIEW Development
  • Developed by Indira Gandhi Centre for Atomic Research
  • Operated by Bharatiya Nabhikiya Vidyut Nigam Limited
Fuel Type
  • Uses MOX Fuel (Mixed Oxide Fuel)
  • Composition:
    • Uranium + Plutonium
  • Source:
    • Reprocessed fuel from PHWRs
Breeder Concept
  • Core is surrounded by Uranium-238 blanket
  • Process:
    • Fast neutrons convert U-238 ? Plutonium-239
This allows the reactor to:
  • Generate more fuel than it consumes
BRIDGE TO STAGE 3
  • PFBR can use Thorium-232 in future
  • Conversion:
    • Thorium ? Uranium-233
This is crucial for Stage 3 (thorium-based reactors) Closed Fuel Cycle
  • Spent fuel is:
    • Reprocessed
    • Recycled back into reactor
This ensures:
  • Maximum utilization of nuclear resources
  • Minimum waste
CURRENT NUCLEAR POWER STATUS IN INDIA
  • Installed Capacity:
    • Around 8.78 GW
  • Electricity Generation (2024–25):
    • 56,681 Million Units
  • Share in Total Electricity:
    • Around 3.1%
Nuclear power currently plays a small but stable role FUTURE EXPANSION PLANS
  • India plans to increase capacity to:
    • 22.38 GW by 2031–32
  • Development includes:
    • 700 MW indigenous reactors
    • 1000 MW reactors with international cooperation
International Cooperation
  • India has signed agreements with:
    • 18 countries for civil nuclear cooperation
This reflects global trust in India’s nuclear programme LONG TERM NUCLEAR ENEGY MISSION
  • Announced in Union Budget 2025–26
  • Target:
    • 100 GW nuclear capacity by 2047
  • Linked to:
    • Net Zero target by 2070
KEY MEASURES Financial Investment
  • Allocation of Rs 20,000 crore
  • Focus on:
    • Small Modular Reactors (SMRs)
SMR Development
  • Target:
    • At least 5 SMRs by 2033
  • Designs by Bhabha Atomic Research Centre:
    • BSMR-200 (200 MWe)
    • SMR-55 (55 MWe)
    • High-Temperature Gas Reactor (for hydrogen production)
Legal Reform
  • Introduction of SHANTI Act, 2025
  • Features:
    • Modernises nuclear laws
    • Allows limited private sector participation
    • Ensures regulatory oversight
SIGNIFICANCE OF PFBR ACHIEVEMENT Energy Security
  • Reduces dependence on imported fuels
Clean Energy Transition
  • Nuclear energy is:
    • Low-carbon
    • Reliable
Supports climate goals Technological Advancement
  • Demonstrates indigenous capability
Strategic Importance
  • Positions India among advanced nuclear nations
CHALLENGES
  • High cost of nuclear infrastructure
  • Safety and waste management concerns
  • Need for strong regulatory mechanisms
  • Public perception and acceptance issues
CONCLUSION
  • The achievement of first criticality of PFBR marks a turning point in India’s nuclear journey
  • It shows:
    • Progress from planning to implementation
    • Strength of indigenous scientific capability
  • With expansion and policy support, nuclear energy will play a larger role in India’s future energy mix
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