Mains Practice Questions for the Day
- The attainment of criticality by the Prototype Fast Breeder Reactor (PFBR) at Kalpakkam marks a strategic milestone in India’s nuclear energy programme. Discuss its significance for India’s energy security and long-term nuclear strategy. (15 M)
- Q. The Supreme Court’s recognition of safe travel on highways as part of Article 21 expands the scope of the Right to Life. Examine its constitutional significance and the challenges in ensuring road safety governance in India. (15 M)
Q. The attainment of criticality by the Prototype Fast Breeder Reactor (PFBR) at Kalpakkam marks a strategic milestone in India’s nuclear energy programme. Discuss its significance for India’s energy security and long-term nuclear strategy. (15 M)
(GS Paper III – Science & Technology | Energy | Infrastructure)
Introduction:
The attainment of criticality by the 500 MW Prototype Fast Breeder Reactor (PFBR) at Kalpakkam, Tamil Nadu marks India’s formal entry into the second stage of its Three-Stage Nuclear Power Programme designed by Dr. Homi J. Bhabha. It is a major step toward long-term energy security, nuclear self-reliance, and effective utilization of India’s vast thorium reserves.
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1.What Criticality Means and Why it Matters
Criticality refers to the stage where a nuclear reactor achieves a self-sustaining and controlled chain reaction, meaning each fission reaction causes exactly one more fission on average (k = 1). This is the normal operating condition of a power reactor. Attaining criticality confirms that the reactor has successfully moved from construction to operational phase and can begin generating heat for electricity production. It is one of the most important technical milestones in nuclear power development.
2.Significance of PFBR for India’s Energy Security
- India has limited uranium reserves but abundant thorium resources. The PFBR improves fuel efficiency by producing more fissile material than it consumes. It uses plutonium-based Mixed Oxide (MOX) fuel and breeds more Plutonium-239 from Uranium-238.
- This reduces dependence on imported uranium and strengthens long-term energy security. It also provides reliable base-load electricity without carbon emissions, supporting India’s low-carbon development and climate commitments.
3.Role in India’s Three-Stage Nuclear Power Programme
- Stage I of India’s programme uses Pressurized Heavy Water Reactors (PHWRs) fueled by natural uranium, producing Plutonium-239 as a by-product.
- Stage II involves Fast Breeder Reactors like PFBR, where plutonium-based fuel generates power and breeds more fissile material.
- Stage III aims to use Thorium-232 to produce Uranium-233 for sustainable nuclear energy. PFBR is the critical bridge between uranium-based reactors and the future thorium economy, without which India cannot effectively transition to Stage III.
4.Strategic and Technological Importance
- The PFBR has been developed by Bharatiya Nabhikiya Vidyut Nigam Limited (BHAVINI) using entirely indigenous technology. More than 200 Indian industries contributed to reactor components, reflecting advanced domestic capabilities in metallurgy, reactor engineering, and strategic manufacturing. This strengthens Aatmanirbhar Bharat, reduces foreign technological dependence, and places India among the very few countries capable of operating commercial-scale Fast Breeder Reactors.
5.Challenges Associated with Fast Breeder Reactors
- Fast Breeder Reactors are technologically complex and expensive. Liquid sodium coolant, though highly efficient, reacts violently with air and water, creating safety risks.
- Construction delays and cost overruns have affected breeder programmes globally. Countries like the U.S., France, and Japan reduced breeder reactor programmes because of safety and economic concerns. Nuclear waste management and public concerns over safety also remain major policy challenges.
6.Way Forward
- India must ensure safe commissioning and stable commercial operation of the PFBR before large-scale expansion. Strong safety oversight by the Atomic Energy Regulatory Board is essential. Research on thorium fuel cycles and advanced reactors such as Small Modular Reactors (SMRs) should continue. Private sector participation in nuclear manufacturing can be expanded carefully while maintaining strategic control and public trust.
Conclusion:
The PFBR at Kalpakkam is not merely a reactor but the foundation of India’s long-term nuclear sovereignty. Its successful criticality marks a decisive step toward a thorium-based energy future, low-carbon growth, and strategic autonomy. It strengthens India’s position as a technologically advanced nuclear power capable of achieving sustainable energy security for the future.
Q. The Supreme Court’s recognition of safe travel on highways as part of Article 21 expands the scope of the Right to Life. Examine its constitutional significance and the challenges in ensuring road safety governance in India. (15 M)
(GS Paper II – Polity | Fundamental Rights | Governance | Judiciary)
Introduction:
The Supreme Court has held that the right to safe travel on highways is an integral part of the Fundamental Right to Life under Article 21 of the Constitution. This judgment emerged during suo motu proceedings following fatal highway accidents in Rajasthan and Telangana in 2025. It transforms road safety from a policy concern into a constitutional obligation of the State.
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1.Constitutional Significance of the Judgment
- Article 21 provides that no person shall be deprived of life or personal liberty except according to procedure established by law.
- After the landmark Maneka Gandhi v. Union of India (1978) judgment, Article 21 was expanded to include life with dignity, fairness, and safety. The recognition of safe highway travel as part of Article 21 reflects this expanded interpretation and affirms that the State has a positive duty to create conditions necessary for safe living, not merely avoid unlawful deprivation of life.
2.What the Right to Safe Travel Includes
- The right includes safe road design, proper signage, controlled access, scientific traffic management, removal of illegal encroachments, designated parking systems, adequate lighting, blackspot correction, and emergency trauma response.
- Citizens should not face avoidable risks due to unsafe highways, unauthorized roadside structures, poor parking management, or administrative negligence. This shifts road safety into a rights-based governance framework.
3.Why Highway Safety Became a Constitutional Issue
- National Highways form only around 2% of India’s total road network but account for nearly 30% of road fatalities.
- High-speed traffic, illegal dhabas, roadside commercial establishments, unsafe parking of heavy vehicles, and unresolved accident-prone blackspots create serious risks.
- The Court observed that roads cannot be allowed to become death traps due to poor governance and administrative failure.
4.Supreme Court Directions on Highway Safety
- The Court prohibited new dhabas, eateries, fuel points, and commercial structures within the Right of Way (ROW) of National Highways.
- Heavy vehicles were directed to park only in designated parking bays and authorized wayside amenities.
- Authorities were instructed to remove blackspots and prevent unsafe roadside encroachments. This emphasizes preventive governance rather than post-accident response.
5.Constitutional Basis of State Responsibility
- Article 21 imposes positive obligations on the State to protect life and dignity. Directive Principles such as Articles 38 and 39 further require the State to promote welfare and human well-being
- . As a welfare state, infrastructure must prioritize public safety rather than only economic efficiency. Therefore, road safety becomes a constitutional governance responsibility and not merely a transport administration issue.
6.Challenges in Implementation
- Removal of illegal roadside structures often faces political resistance and local opposition.
- Coordination between NHAI, State governments, police, and local bodies remains weak.
- Enforcement against illegal parking and roadside encroachments is inconsistent.
- Many highways still lack trauma response systems, scientific blackspot correction, and reliable accident data collection.
- Without institutional accountability, judicial directions may remain weak in practice.
7. Way Forward
- India must adopt a rights-based approach to road safety with mandatory highway safety audits, time-bound correction of blackspots, regulated parking infrastructure, and strong public accountability. Technology such as AI surveillance, speed cameras, GIS-based blackspot mapping, and rapid emergency response systems should be expanded. Public awareness and strict enforcement must complement infrastructure reforms.
Conclusion:
The recognition of safe travel on highways as part of Article 21 marks a major evolution in constitutional jurisprudence. It reinforces that the right to life includes safe and dignified movement in public spaces. Effective implementation now requires institutional accountability, coordinated governance, and a shift from reactive accident response to preventive constitutional road safety management.
