Workers have finished concreting the containment building dome for Unit 2 of the of the Rooppur nuclear power station under construction in Bangladesh, Russian state nuclear corporation Rosatom said.
The company said the operation took 122 days to complete, five days ahead of schedule.
At a nuclear power reactor, the containment acts as a hermetic protection system, designed to withstand high external and internal pressures and protect against radiation release.
In September 2023, the 129-tonne outer steel containment dome was installed at Rooppur-2.