库丹库拉姆核电站（或KKNPP）是印度最大的核电站，位于印度南部泰米尔纳德邦蒂鲁内尔维利地区的库丹库拉姆。

Two reactors (KKNPP-1 and 2) have been operating since 2013 and 2016, respectively, while two more (KKNPP-3 and 4) are currently under construction following the groundbreaking ceremony held in February 2016.

KKNPP-3和4是俄罗斯设计的压水堆（型号VVER-1000/V-412）。这些反应堆是KKNPP-1和2的重复设计，并根据调试和运行经验反馈进行了进一步改进。

For the construction of these two units, Dextra supplied 350,000 Bartec couplers to connect rebars in the reactor building, auxiliary building, and spent fuel storage structures.

Bartec is a trusted splicing system, well-known for its high performance in tension, compression, and fatigue. It is widely used in the construction of buildings, bridges, metro systems, nuclear reactors, and more.

Unit 3 is scheduled for completion in March 2023, with Unit 4 following in the subsequent year.

Upon completion, these two reactors will add 2,000 MW of electricity to the existing units, bringing the total site capacity to 4,000 MW.

图片来源：https://twitter.com/daeindia/status/881395402171404288，https://www.deccanherald.com/content/619873/building-units-3-4-kudankulam.html