World’s Oldest Nuclear Reactors at Tarapur Set for Revival After Major Refurbishment
Tarapur Atomic Power Station Units 1 and 2, the world’s oldest operating nuclear reactors, are set for revival after extensive refurbishment. Officials describe the upgrade as a complex engineering feat, ensuring continued energy generation and showcasing India’s nuclear expertise.
During a rare and closely monitored visit, NDTV gained access to the facility alongside BC Pathak, chairman and managing director of Nuclear Power Corporation of India Limited. The visit provided critical insights into the technical and operational efforts undertaken to restore the ageing reactors. Officials described the process as comparable to performing open heart surgery, underscoring the complexity and precision required to upgrade and extend the lifespan of decades-old nuclear infrastructure.
The Tarapur facility, operated by Nuclear Power Corporation of India Limited, has long been a cornerstone of India’s nuclear energy programme. Despite being among the oldest in operation globally, Units 1 and 2 have undergone meticulous refurbishment to meet modern safety and performance standards. The revival of Unit 2 marks a significant milestone, demonstrating India’s capability to sustain and modernize legacy nuclear assets under challenging conditions.
The restart of Tarapur Unit 2 not only reinforces the resilience of India’s nuclear power infrastructure but also highlights the country’s technical expertise in extending reactor lifecycles. As these reactors prepare to return to full operation, they symbolize a rare engineering achievement and a continued commitment to reliable, long-term energy generation.

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