Topic: Infrastructure: Energy
Q6. Why does India attach strategic importance to thorium despite its limited present-day role in electricity generation? Explain the technological challenges involved in developing a thorium-based nuclear fuel cycle. (10 M)
Difficulty Level: Medium
Reference: IE
Why the question
In the context of India’s three-stage nuclear power programme, recent progress in breeder technology and the push towards long-term nuclear self-reliance. It tests the strategic rationale as well as technological feasibility of thorium utilisation.
Key Demand of the question
The answer should explain why thorium has strategic importance for India despite its limited current contribution to electricity generation. It should then examine the technological and fuel-cycle challenges that prevent its rapid commercial deployment.
Structure of the Answer:
Introduction
Briefly introduce India’s uranium-thorium resource asymmetry and connect thorium with the long-term objective of the three-stage nuclear power programme and energy security.Body
- Strategic importance of thorium: Explain its significance in terms of India’s indigenous resource availability, long-term fuel security, reduced external dependence and its central place in the third stage of India’s nuclear programme.
- Technological challenges: Discuss the difficulties arising from thorium being fertile rather than fissile, production and handling of U-233, reprocessing complexities, radiation-related challenges and the need to mature reactor and closed fuel-cycle technologies.
Conclusion
Conclude that thorium is primarily a long-term strategic energy option rather than an immediate capacity solution, whose potential depends on successfully mastering the complete thorium fuel cycle.
