UPSC Mains Answer: Give an account of the growth and development of nuclear science and technology in India. What is the advantage of the fast breeder reactor programme in India? (Answer in 250 words)

Difficulty Level: Hard

Sub-category: Science and Technology - Developments and their Applications and Effects in Everyday Life

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Nuclear science and technology in India have evolved through distinct phases, reflecting the nation’s pursuit of energy security, technological self-reliance, and strategic autonomy. The journey began in 1948 with the establishment of the Atomic Energy Commission (AEC) under Homi Bhabha, who envisioned a three-stage nuclear power programme to harness India’s vast thorium reserves. The first stage involved Pressurised Heavy Water Reactors (PHWRs) using natural uranium, exemplified by the Rajasthan Atomic Power Station (RAPS) and Madras Atomic Power Station (MAPS). The second stage, currently underway, focuses on Fast Breeder Reactors (FBRs) that utilise plutonium-uranium mixed oxide fuel to breed more fissile material than they consume, thereby enhancing fuel efficiency. The third stage aims to deploy Thorium-based reactors, leveraging India’s abundant thorium reserves to achieve long-term energy sustainability.
The Fast Breeder Reactor (FBR) programme is a cornerstone of India’s nuclear strategy, offering multiple advantages. Firstly, FBRs significantly improve fuel utilisation by converting fertile uranium-238 into fissile plutonium-239, thereby multiplying the energy extracted from natural uranium by a factor of 60-70. This reduces dependence on uranium imports and enhances energy security. Secondly, FBRs contribute to waste management by recycling spent fuel, minimising radioactive waste and its environmental impact. Thirdly, the programme aligns with India’s three-stage nuclear roadmap, bridging the gap between uranium-based reactors and thorium-based systems. The Prototype Fast Breeder Reactor (PFBR) at Kalpakkam, operational since 2024, marks a critical milestone in this endeavour, demonstrating India’s technological prowess and commitment to a sustainable nuclear future.
Looking ahead, the FBR programme will play a pivotal role in India’s energy mix, ensuring a stable, low-carbon power supply while advancing the nation’s scientific and industrial capabilities. Its success will be instrumental in realising the vision of a self-sufficient, thorium-driven nuclear energy ecosystem.