Nuclear Technology
Nuclear technology harnesses the immense energy locked inside the atomic nucleus—through fission, fusion, and radioactive decay—to serve both constructive and strategic ends. From powering cities and diagnosing diseases to shaping national security doctrines, it is a transformative force. For UPSC aspirants, this topic is not merely a science chapter; it is a bridge between physics, public policy, environment, and international relations. India’s civil nuclear programme, its three-stage thorium strategy, and its nuanced stance on global non-proliferation make this a high-yield area for both conceptual clarity and current affairs integration.
Constitutional and Legal Foundation: Atomic energy is a Union subject under Entry 6 of the Union List (Seventh Schedule), giving Parliament exclusive legislative power. The key legal framework includes the Atomic Energy Act, 1962, which regulates the use of atomic energy for peaceful purposes, and the Civil Liability for Nuclear Damage Act, 2010, which provides a legal mechanism for compensation in case of nuclear accidents.
This chapter covers:
- Basics of nuclear physics: atomic structure, isotopes, fission, and fusion
- Nuclear reactors: components, types, and working principles
- India’s three-stage nuclear power programme and the thorium cycle
- Nuclear fuel cycle: mining, enrichment, reprocessing, and waste management
- Major institutions: DAE, BARC, NPCIL, IGCAR, and AERB
- Nuclear safety, radiation protection, and disaster management
- Nuclear weapons: India’s policy, No First Use doctrine, and command structure
- Non-proliferation framework: NPT, CTBT, NSG, and India’s civil nuclear agreements
- Applications beyond power: nuclear medicine, agriculture, food preservation, and industrial uses
- Recent developments: Small Modular Reactors, nuclear energy missions, and global nuclear diplomacy
Exam Relevance:
- Prelims: Questions often test factual knowledge—reactor types, fuel used, treaty provisions, and institutional mandates. Terms like “fast breeder reactor,” “heavy water,” or “NSG waiver” are frequent.
- Mains (GS-3, Science & Technology; GS-2, International Relations): Expect analytical questions on India’s energy security, nuclear doctrine, liability issues, and the tension between disarmament and clean energy goals. A balanced, multi-dimensional answer—scientific, economic, and strategic—is key.
Understanding nuclear technology today is not optional; it is essential to grasp India’s march towards energy self-reliance and its evolving role in a nuclear-armed world.
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