The installation of the lower part of the six-tier reactor building inner containment dome has been completed at the Rooppur Nuclear Power Plant (NPP) Unit-1.
ASE JSC of the Rosatom Engineering Division implemented the work in Pabna, about 160 kilometers northwest of the capital city of Dhaka.
The operation was carried out by specialists of the Trest RosSEM branch in Bangladesh using a Liebherr heavy crawler crane of 1350t lifting capacity. A day before lifting, a special mounting beam of 15 steel cables had been installed, said a press release Wednesday.
“The first of the three tiers of the inner containment dome part has been assembled. The assembly took place as usual,” said Aleksey Deriy, vice president - ASE JSC director for the Rooppur NPP construction project.
He said, “The next stage of the work will be to mount the subsequent two tiers pre-assembled into one unit of the reactor dome containment, at the design level.”
“As soon as both structures are welded together, we will start concreting the dome,” Deriy added.
Preparations for this operation took several months. The metal structures of 3 tiers of the reactor building dome were pre-assembled into 2 185t and 191t reinforced metal units on special slipways located in the immediate proximity of the power unit.
The Russian design with VVER-1200 reactors successfully implemented at Novovoronezh NPP- 2 was selected for the first NPP in Bangladesh.
This is an evolutionary GenIII+ design which fully complies with all international safety requirements.