India’s most advanced atomic reactor attains criticality, marking a historic event in India’s nuclear power program. The Prototype Fast Breeder Reactor (PFBR), built by India, reached criticality, formally advancing our country to the second stage of its three-stage nuclear energy program, which provides for long-term energy security. The successful achievement demonstrates the ongoing advancement of India’s nuclear engineering capabilities and its ability to achieve self-sufficiency in developing strategic technologies.

Source: X

Why Is PFBR at Kalpakkam Considered a Breakthrough in India’s Nuclear Programme?

• Fast breeder technology development: PFBR stands for Prototype Fast Breeder Reactor, which is a 500 MWe sodium-cooled fast breeder reactor with capabilities to produce more fissile material (plutonium-239) than it utilizes.
• Strategically located and operated: It is located in Kalpakkam, Tamil Nadu, and operates under BHAVINI, which is India’s sole operator of fast breeder reactors run by the Department of Atomic Energy.
• Three stages of nuclear energy program: It is an essential component of the second stage of India’s nuclear energy policy, connecting pressurized heavy water reactors and later thorium-fueled reactors.
• Construction scale and involvement: Its construction has involved more than 200 industries across India that include MSMEs in support of the Aatmanirbhar Bharat vision.

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What Is the Impact of Criticality on India’s Global Standing in Energy and Science?

• Sustained chain reaction obtained: Achieving criticality implies that the reactor has sustained a self-perpetuating process of nuclear fission chain reactions.
• Exclusive technology globally: With completion, India will become the second nation after Russia to utilize a fast breeder reactor commercially.
• Improved fuel economy: The fast breeder reactor technology enhances India’s fuel economy by producing more fissile material than it consumes.
• Low carbon footprint: The PFBR facilitates India’s sustainable energy policy by providing low-carbon energy through baseload power production.

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What Does This Milestone Mean for India’s Thorium-Based Future Nuclear Energy Plan?

India has developed a unique nuclear power program that utilizes the country’s vast and abundant thorium reserves, which are among the largest in the world. The development of the PFBR will create the source of plutonium, which is necessary for the third stage of India’s nuclear program, in which thorium will be converted into uranium-233, providing an energy source that can be used for generations to come. This will allow India to achieve energy independence from the traditional constraints of uranium fuel sources.

India’s most advanced atomic reactor attains criticality at Kalpakkam, which is a critical milestone in India’s nuclear journey and establishes India as a leader in clean energy and technology independence. It reinforces India’s leadership position in advanced nuclear innovation globally, while providing a foundation for future thorium-based energy systems.

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