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СпутникиРНSpaceXРоскосмосNASAOn June 15, 2026, the reactor pressure vessel has been installed in the design position at power unit 5 at Kudankulam NPP construction site (the Republic of India, general designer and general contractor being Rosatom Engineering Division).
The operation was performed using the Open Top method, i.e. the equipment was installed into the reactor building with a heavy-duty crane not until the dome being erected. This method was earlier practiced by the Russian-Indian team during the second stage of the Kudankulam NPP construction.
The equipment was manufactured at Atommash plant of the Rosatom Machine Building Division in Volgodonsk (the Rostov region). The total weight of the reactor vessel is approximately 300 tons; it was delivered to the Kudankulam NPP construction site in 2025.
With the reactor vessel installed, the main equipment of the reactor plant is to be installed, namely steam generators, main circulation pumps, main circulation pipeline units, pressure compensator, and emergency core cooling system tanks.
“А recipe for the success of the Kudankulam NPP project is the long-standing and efficient cooperation between India and Russia. While Indian specialists are constructing and commissioning four power units based on the Russian design, with two more power units generating electricity for over 10 years.
All the above-mentioned facts demonstrate the excellent teamwork aimed at strengthening the partnership between the two countries,” said Mikhail Novikov, ASE JSC Director of Projects in India.
For reference:
The Kudankulam NPP Project is implemented as part of the Intergovernmental agreement on cooperation in the area of NPP construction in India, concluded on November 20, 1988, and the Addenda thereto of June 21, 1998.
Kudankulam NPP power units Nos. 1&2 were connected to the national grid of India in 2013 and 2016, respectively. They are the most powerful ones in India. They have generated during their operation (by April 2026) over 127 billion kWh of electricity.
Power units No. 3, 4, and 5 and 6 are the second and third stages of the Kudankulam NPP, each equipped with a VVER-1000 reactor. The technical solutions implemented in Kudankulam design characterize further evolutionary development of VVER-reactor NPPs of high power and transition to creation of a new, reliable, safe and feasible power unit.
After all six units have been put into operation, the Kudankulam NPP will cover a significant share of the electricity demands in Tamil Nadu, a 72 mln. state, as well as other states where the output will be distributed in accordance with the “South Grids of India” guidelines.
Rosatom Engineering Division unites the leading companies of the nuclear industry, namely: Atomstroyexport JSC (Moscow, Nizhny Novgorod, branches in Russia and abroad), Joint Design Institute - Atomenergoproekt JSC (Moscow, Nizhny Novgorod, St. Petersburg branches - design institutes, branches in Russia and abroad, R&D branches) and subsidiary construction organizations. The Engineering Division ranks first in the world by the order portfolio and the number of NPPs constructed simultaneously across the world. About 80% of the Division’s revenues originate from foreign projects. The Engineering Division implements construction projects for high-power NPPs in Russia and across the world, renders a full range of EPC, EP, EPC(M) services including project management and design activities, and develops Multi-D technologies for the management of complex engineering facilities. The Division relies on the achievements of the Russian nuclear industry and modern cutting-edge technologies. www.ase-ec.ru
On June 15, 2026, the reactor pressure vessel has been installed in the design position at power unit 5 at Kudankulam NPP construction site (the Republic of India, general designer and general contractor being Rosatom Engineering Division).
The operation was performed using the Open Top method, i.e. the equipment was installed into the reactor building with a heavy-duty crane not until the dome being erected. This method was earlier practiced by the Russian-Indian team during the second stage of the Kudankulam NPP construction.
The equipment was manufactured at Atommash plant of the Rosatom Machine Building Division in Volgodonsk (the Rostov region). The total weight of the reactor vessel is approximately 300 tons; it was delivered to the Kudankulam NPP construction site in 2025.
With the reactor vessel installed, the main equipment of the reactor plant is to be installed, namely steam generators, main circulation pumps, main circulation pipeline units, pressure compensator, and emergency core cooling system tanks.
“А recipe for the success of the Kudankulam NPP project is the long-standing and efficient cooperation between India and Russia. While Indian specialists are constructing and commissioning four power units based on the Russian design, with two more power units generating electricity for over 10 years.
All the above-mentioned facts demonstrate the excellent teamwork aimed at strengthening the partnership between the two countries,” said Mikhail Novikov, ASE JSC Director of Projects in India.
For reference:
The Kudankulam NPP Project is implemented as part of the Intergovernmental agreement on cooperation in the area of NPP construction in India, concluded on November 20, 1988, and the Addenda thereto of June 21, 1998.
Kudankulam NPP power units Nos. 1&2 were connected to the national grid of India in 2013 and 2016, respectively. They are the most powerful ones in India. They have generated during their operation (by April 2026) over 127 billion kWh of electricity.
Power units No. 3, 4, and 5 and 6 are the second and third stages of the Kudankulam NPP, each equipped with a VVER-1000 reactor. The technical solutions implemented in Kudankulam design characterize further evolutionary development of VVER-reactor NPPs of high power and transition to creation of a new, reliable, safe and feasible power unit.
After all six units have been put into operation, the Kudankulam NPP will cover a significant share of the electricity demands in Tamil Nadu, a 72 mln. state, as well as other states where the output will be distributed in accordance with the “South Grids of India” guidelines.
Rosatom Engineering Division unites the leading companies of the nuclear industry, namely: Atomstroyexport JSC (Moscow, Nizhny Novgorod, branches in Russia and abroad), Joint Design Institute - Atomenergoproekt JSC (Moscow, Nizhny Novgorod, St. Petersburg branches - design institutes, branches in Russia and abroad, R&D branches) and subsidiary construction organizations. The Engineering Division ranks first in the world by the order portfolio and the number of NPPs constructed simultaneously across the world. About 80% of the Division’s revenues originate from foreign projects. The Engineering Division implements construction projects for high-power NPPs in Russia and across the world, renders a full range of EPC, EP, EPC(M) services including project management and design activities, and develops Multi-D technologies for the management of complex engineering facilities. The Division relies on the achievements of the Russian nuclear industry and modern cutting-edge technologies. www.ase-ec.ru