Give an account of the growth and development of nuclear science and technology in India. What is the advantage of fast breeder reactor programme in India ?
Approach · directive: “give an account / what is the advantage”
What it asks · Trace how India's nuclear science and technology grew, and explain why a fast breeder reactor programme matters for the country.
The question has 2 parts — answer each
- Give an account of the growth and development of nuclear science and technology in India
- Explain the advantage of the fast breeder reactor programme for India
Open with · India's nuclear programme, begun under Homi Bhabha, was designed around limited uranium and large thorium reserves, leading to a three-stage plan.
Cover
- Beginnings: Tata Institute of Fundamental Research (1945), the Atomic Energy Commission (1948) and the Department of Atomic Energy (1954), with Trombay research reactors from 1956.
- Power: Tarapur (1969), then indigenous pressurised heavy water reactors, and the Nuclear Power Corporation of India (NPCIL) to run them.
- Applications and tests: isotopes for medicine, agriculture and industry; the 1974 test and the 1998 tests established weapons capability.
- Opening up: the 2008 civil nuclear cooperation with the US and Nuclear Suppliers Group waiver allowed uranium and reactor imports; Kudankulam with Russian help.
- Three stages: heavy water reactors on natural uranium, fast breeder reactors using plutonium, and thorium-based reactors using uranium-233.
- Fast breeder advantage: it produces more fissile fuel than it consumes and is the bridge to India's abundant thorium.
- Fast breeder advantage: it extracts far more energy from uranium and helps reduce dependence on imports, though costs and safety need care.
Close with · Fast breeders link today's heavy water fleet to a thorium future, giving India long-term energy security if technology and safety are mastered.
Add value (verified)
- PIB factsheet (7 April 2026): the 500 MWe Prototype Fast Breeder Reactor at Kalpakkam attained first criticality on 6 April 2026, beginning stage two of the three-stage programme. A New Chapter in India's Nuclear Journey — PIB Factsheet, 7 April 2026 ↗“The indigenously designed and built Prototype Fast Breeder Reactor (PFBR) at Kalpakkam in Tamil Nadu successfully attained its first criticality on 6th April 2026”
Question: UPSC's CS (Main) 2017, GS Paper III — paper ↗. Approach: Minimalist IAS, checked 30 Sept 2026 (how we verify) — UPSC publishes no model answers. ·
Model answer · 337 words (UPSC limit 250) · Minimalist IAS
India's nuclear programme, shaped by Homi Bhabha, was planned around scarce uranium and abundant thorium, which produced a three-stage strategy and a lasting emphasis on self-reliance.
Growth of nuclear science and technology
- Foundations: Tata Institute of Fundamental Research (1945), Atomic Energy Commission (1948) and Department of Atomic Energy (1954); Apsara at Trombay (1956) was Asia's first research reactor, followed by CIRUS (1960).
- Power generation: Tarapur (1969) with imported boiling water reactors, then an indigenous line of pressurised heavy water reactors run by NPCIL, scaled from 220 MWe to 540 MWe and 700 MWe designs.
- Full fuel cycle: uranium mining at Jaduguda, heavy water plants, fuel fabrication and reprocessing gave India command of the closed cycle.
- Strategic capability: the 1974 and 1998 tests; the sanctions that followed deepened indigenisation.
- Applications: radioisotopes for cancer therapy and diagnostics, radiation processing of food, mutation-bred crop varieties, desalination and industrial radiography.
- Opening up: the 2008 civil nuclear agreement with the United States, IAEA safeguards and the Nuclear Suppliers Group waiver allowed uranium and reactor imports; Kudankulam was built with Russia.
- Fast reactors: the Fast Breeder Test Reactor at Kalpakkam (1985) built experience for the 500 MWe Prototype Fast Breeder Reactor of BHAVINI (since then, the PFBR attained first criticality on 6 April 2026).
Advantage of the fast breeder programme
- More fuel out than in: the uranium-238 blanket converts into plutonium-239, so the reactor breeds more fissile material than it consumes.
- Multiplies uranium: it draws far more energy from the same natural uranium, stretching limited domestic reserves and cutting import dependence.
- Gateway to thorium: a thorium blanket breeds uranium-233, the fuel of the third stage, unlocking India's very large thorium reserves for long-term energy security.
- Closed cycle: reprocessing and recycling reduce long-lived waste, and the technology is largely indigenous.
- Caveats: sodium coolant demands rigorous safety, costs are high and the prototype took long to commission.
Fast breeders link today's heavy water fleet to a thorium future; if safety and cost are mastered, they give India an energy base largely free of imported fuel.
Written by Minimalist IAS from facts checked at source (how we verify) — a little fuller than exam length, so every part of the question is covered; in the hall, keep the structure and trim the detail. UPSC publishes no model answers: compare your structure and coverage with this, then write your own.