IC dome metal structures were installed in the reactor building of Power Unit 2 at the Rooppur NPP construction site in the People’s Republic of Bangladesh (the NPP’s General Designer and General Contractor is the Rosatom State Corporation Engineering Division). The upper portion of the dome weighing 194 tonnes and being 35.7 m in diameter was placed in its design position at an elevation of 51.7 m and the construction height has now reached 60.5 m.

“IC dome installation is one of the 2022 milestones. We performed similar works at Power Unit 1 last year. Thanks to that, this time the dome preassembling activities lasted 56 days less taking all in all 151 days. Once both IC portions have been welded together, the dome concreting will go ahead,” commented Mr. Alexey Deriy, Vice President of ASE JSC and Director of the Rooppur NPP Construction Project.

Installation activities for the IC dome were conducted in two stages. The lower portion of the dome weighing 195 tonnes and being 42.8 m in diameter was placed in its design position a week earlier, on 20 June.

Assembly and installation activities for the IC dome are carried out by specialists of the Branch Office of TrestRosSEM LLC (comes under the Rosatom’s Engineering Division). The Liebherr LR11350 crane (with a lifting capacity of 1350 tonnes) was used to make a lift which took 4 hours. There was a particular difficulty in the process since it was required to place both dome portions in the design position with a tolerance of not more than 1 cm.

The inner containment is one of the main components of the nuclear power plant safety system. It not only protects the reactor compartment, but also supports the polar crane used to service the nuclear reactor.

 The Rooppur NPP with two VVER-1200 reactors and a total capacity of 2400 MW is being constructed under a Russian design 160 km of Dhaka, the capital of Bangladesh, in accordance with the General Contract of 25 December 2015. A Russian design based on VVER-1200 reactors as successfully implemented at two Power Units of the Novovoronezh NPP was chosen for the first NPP of Bangladesh. The design is an evolutionary design of III+ generation that is fully consistent with the international safety requirements.

For reference:

The Rosatom State Corporation Engineering Division unites the leading companies of the nuclear industry, namely: Atomstroyexport JSC (Moscow, Nizhny Novgorod, branch offices in Russia and abroad), the Joint Design Institute Atomenergoproekt JSC (Moscow, Nizhny Novgorod, and St. Petersburg branch offices (design institutes), branch offices in Russia and abroad, surveying branch offices), and subsidiary construction companies.

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, and 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 innovative technologies.

We construct reliable and safe NPPs equipped with III+ generation VVER reactors that are in line with all international requirements and recommendations.

Source: Rosatom State Corporation Engineering Division
Power Unit 2 of the Rooppur NPP witnesses the inner containment (IC) dome installation completed
Power Unit 2 of the Rooppur NPP witnesses the inner containment (IC) dome installation completed