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.
It asks 2 things — 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 · Homi Bhabha built India's nuclear programme around a resource paradox, limited uranium but one of the world's largest thorium reserves, and the three-stage plan that followed explains both seventy years of growth and why fast breeders matter.
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 are the bridge from today's heavy water fleet to a thorium future; mastering them safely is how the 100 GW nuclear target for 2047 can rest on fuel bred at home rather than imported.
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”
- PIB factsheet (April 2026): India holds limited uranium but one of the largest thorium reserves in the world, which is why DAE designed a three-stage programme; PFBR criticality marks entry into stage two.PIB Factsheet: Prototype Fast Breeder Reactor attains first criticality (Department of Atomic Energy, April 2026) ↗“India holds limited uranium reserves but one of the largest thorium reserves in the world. To make the most of these resources, the Department of Atomic Energy designed a three-stage nuclear power”
- Budget 2025-26 note: target of 100 GW nuclear power capacity by 2047 under the Nuclear Energy Mission.PIB: Nuclear Power in Union Budget 2025-26 (Department of Atomic Energy) ↗“The government has set an ambitious target of 100 GW nuclear power capacity by 2047”
- PIB factsheet (April 2026): India's current nuclear capacity is 8.78 GW; nuclear plants generated 56,681 million units in 2024-25.PIB Factsheet: Prototype Fast Breeder Reactor attains first criticality (Department of Atomic Energy, April 2026) ↗“Installed Capacity: India's current nuclear capacity is 8.78 Gigawatt (GW) . In 2024–25, nuclear power plants generated 56,681 Million Unit”
Question: UPSC's CS (Main) 2017, GS Paper III — paper ↗. Approach: Minimalist IAS, checked 3 Oct 2026 (how we verify) — UPSC publishes no model answers. ·
Model answer· 360words · Minimalist IAS
Homi Bhabha designed India's nuclear programme around a resource paradox: limited uranium but one of the largest thorium reserves in the world. The three-stage plan that followed explains both seventy years of growth and why fast breeders matter.
Growth and development of nuclear science and technology
- Foundations: TIFR (1945), the Atomic Energy Commission (1948) and the Department of Atomic Energy (1954); Apsara at Trombay (1956), Asia's first research reactor, then CIRUS (1960).
- Power generation: Tarapur (1969) on imported boiling water reactors, then an indigenous pressurised heavy water reactor line under NPCIL, scaled from 220 MWe to 700 MWe.
- Closed fuel cycle: uranium mining at Jaduguda, heavy water plants, fuel fabrication and reprocessing.
- Strategic capability: the 1974 and 1998 tests; the sanctions that followed deepened indigenisation.
- Applications: radioisotopes for cancer care, food irradiation, mutation-bred crop varieties and desalination.
- Opening up: the 2008 civil nuclear agreement with the United States, IAEA safeguards and the NSG waiver allowed uranium and reactor imports; Kudankulam with Russia.
- Scale today: installed capacity of 8.78 GW (2026) and a Nuclear Energy Mission target of 100 GW by 2047 (Budget 2025-26).
- 1948: Atomic Energy Commission
- 1956: Apsara
- 1969: Tarapur
- 1985: FBTR, Kalpakkam
- 2026: PFBR criticality
Advantage of the fast breeder reactor programme
- Breeds more fuel than it burns: a uranium-238 blanket converts into plutonium-239, so fissile stock grows with use.
- Multiplies uranium: far more energy from the same natural uranium, stretching scarce domestic reserves and cutting import dependence.
- Gateway to thorium: a thorium blanket breeds uranium-233, the fuel of the third stage, unlocking India's vast thorium.
- Closed cycle, less waste: reprocessing and recycling reduce long-lived waste, with technology that is largely indigenous.
- Milestone reached: the Fast Breeder Test Reactor at Kalpakkam (1985) built the experience for BHAVINI's 500 MWe Prototype Fast Breeder Reactor, which attained first criticality on 6 April 2026, taking India into stage two.
- Caveats: sodium coolant demands rigorous safety; costs are high and the prototype took long to commission.
Fast breeders are the bridge from today's heavy water fleet to a thorium future. Mastering them safely is how the 100 GW nuclear target for 2047 can rest on fuel bred at home rather than imported.
Prepared by Minimalist IAS to the answer standard of Shivam Singh (mentor, 7 years) · facts checked against official sources (how we verify) · updated 3 Oct 2026. UPSC publishes no model answers: compare your structure and coverage with this, then write your own.
