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India Achieves Criticality in Prototype Fast Breeder Reactor

Wednesday, 8 April 2026

Key Points

The Prototype Fast Breeder Reactor (PFBR) at Kalpakkam has achieved criticality, marking a pivotal moment in India's nuclear energy program. This development is crucial for UPSC aspirants, particularly for GS Paper 3, as it highlights advancements in science and technology. Last Updated: 08-04-2026

Key Facts About Prototype Fast Breeder Reactor (PFBR)

  • The Prototype Fast Breeder Reactor (PFBR) is located at Kalpakkam, Tamil Nadu.
  • It achieved criticality, indicating a self-sustaining nuclear chain reaction.
  • Part of India's 3-stage nuclear program, focusing on thorium utilization.
  • Uses mixed oxide (MOX) fuel to produce more fuel than it consumes.
  • Plans to construct six more FBRs of 600 MWe each.
  • India aims to produce 22,400 MWe of nuclear power by 2032.
  • Once operational, India will be the second country after Russia to run a commercial FBR.

India's Strategic Nuclear Energy Goals

The PFBR's success is a significant step towards India's strategic goal of energy independence. By utilizing its vast thorium reserves, India aims to reduce reliance on imported fuels. The development aligns with India's economic and strategic objectives, promoting sustainable growth and energy security. Globally, India is positioned to become a leader in nuclear technology, with plans to expand its nuclear power capacity significantly.

UPSC Relevance

  • GS Paper 3: Science and Technology - Developments and their applications and effects in everyday life.
  • Prelims: Questions could focus on the stages of India's nuclear program, the role of PFBR, and thorium utilization.
  • Mains: Analytical themes may include energy security, sustainable development, and technological advancements in nuclear energy.
  • Essay Paper: Topics on energy independence and technological innovation.

FAQ Section

  • What is the Prototype Fast Breeder Reactor (PFBR)?
    The PFBR is a nuclear reactor designed to achieve a self-sustaining chain reaction, producing more fuel than it consumes, and is part of India's strategy to utilize thorium resources.
  • Why is the PFBR important?
    The PFBR is crucial for expanding India's nuclear fuel availability and achieving energy independence by utilizing thorium reserves.
  • What are the key features of the PFBR?
    The PFBR uses mixed oxide fuel, aims to produce 500 MWe, and is part of a broader plan to construct additional reactors and enhance nuclear power capacity.

Detailed Coverage

  • PFBR at Kalpakkam attained criticality.
  • Significant progress in India’s nuclear energy program.
  • Criticality indicates a self-sustaining chain reaction.
  • India’s nuclear program follows a three-stage approach.
  • First stage: Pressurized Heavy Water Reactors (PHWRs).
  • PHWRs use natural uranium and heavy water.
  • Current nuclear power capacity: 8,180 MWe.
  • Goal: 22,400 MWe by 2032.
  • Second stage: Fast Breeder Reactors (FBRs).
  • FBRs produce more fuel than they consume.
  • India’s prototype FBR is 500 MWe.
  • Plans for six more 600 MWe FBRs.
  • India to be second country after Russia with a commercial FBR.
  • Thorium (Th-232) converted to fissile U-233.
  • India has vast thorium reserves for long-term energy.
  • Future plans include thorium-based reactors and molten salt reactors (MSRs).
Science & Technology

Practice Questions

Test your understanding of this article

Question 1 of 50 / 5 answered
1

As part of India's three-stage nuclear program, the Prototype Fast Breeder Reactor (PFBR) plays a critical role in transitioning from uranium-based to thorium-based reactors. Which of the following stages precedes the deployment of Fast Breeder Reactors in this strategic framework?

India Achieves Criticality in Prototype Fast Breeder Reactor | UPSC Current Affairs - PrepAiro