Kudankulam Nuclear Plant Units 5 & 6 Get Approval for Major Equipment

The Atomic Energy Regulatory Board has approved the installation of major equipment for Kudankulam Nuclear Power Plant Units 5 and 6. This is a key step for the project.
By Newsroom | Energy, India |

The Atomic Energy Regulatory Board (AERB) has granted approval for the "major equipment erection" at Units 5 and 6 of the Kudankulam Nuclear Power Project. This clearance, issued on April 30, 2026, permits the Nuclear Power Corporation of India Limited (NPCIL) to proceed with the installation of critical components. The development signifies a crucial step forward in the construction of these two units, which are part of India's ongoing expansion of nuclear energy capacity.

The approved equipment includes the Reactor Pressure Vessel, Steam Generators, and Coolant Pumps. This permission follows a thorough, multi-tier safety review conducted by the AERB against its stringent safety requirements, and comes after significant progress in the project's civil works. The Kudankulam project, situated in the Tirunelveli district of Tamil Nadu, involves six Pressurised Water Reactors of VVER design, developed in technical collaboration with Russia. Units 3 and 4 are currently reported to be in advanced construction phases.

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AERB issues permission for major equipment erection at Kudankulam Nuclear Power Project - 1

Regulatory Clearance Marks Key Construction Phase

The AERB's green light for the erection of major equipment signals the transition into a more advanced stage of construction for KKNPP Units 5 and 6. This regulatory nod is contingent upon successful safety assessments, a process described as rigorous and multi-layered. The collaboration with Russia extends beyond equipment supply to the foundational technological aspects of the VVER reactor design.

The project's overall timeline and operational milestones, as outlined by the Nuclear Power Corporation of India Limited, detail a sequence of approvals and construction phases, including administrative sanctions, equipment manufacturing and delivery, and the commencement of excavation and civil works. The current AERB permission specifically addresses the installation of the primary reactor systems, indicating that foundational construction has reached a sufficient stage to accommodate these large-scale components.

Context of Kudankulam Nuclear Power Plant

The Kudankulam Nuclear Power Plant is noted as India's largest nuclear installation, utilizing advanced Russian pressurized water reactor technology. The project has, at various points, faced opposition and public scrutiny. Its development is a strategic component of India's energy policy, aiming to increase the nation's nuclear energy output. The project's history is marked by phased approvals and construction stages, with previous reports indicating the commissioning of earlier units. The current focus on Units 5 and 6 represents a continuation of this expansion strategy.

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Frequently Asked Questions

Q: What did the Atomic Energy Regulatory Board (AERB) approve for Kudankulam Nuclear Power Plant Units 5 and 6 on April 30, 2026?
The AERB approved the 'major equipment erection' for Units 5 and 6. This means the Nuclear Power Corporation of India Limited (NPCIL) can now install important parts like the Reactor Pressure Vessel and Steam Generators.
Q: Why is this approval important for the Kudankulam Nuclear Power Plant?
This approval marks a key step in building Units 5 and 6, moving the construction forward to a more advanced stage. It shows that safety reviews were passed and civil works are ready for large components.
Q: What are the next steps for Kudankulam Nuclear Power Plant Units 5 and 6 after this approval?
With this clearance, NPCIL can proceed with installing critical components for Units 5 and 6. This continues India's plan to expand its nuclear energy capacity.
Q: What kind of reactors are being built at the Kudankulam Nuclear Power Plant?
The Kudankulam project uses Pressurised Water Reactors of the VVER design, which are developed with technical help from Russia. Units 5 and 6 will also use this technology.