Concreting of the outer containment dome of the first unit at Turkey's Akkuyu nuclear power plant took 104 days, with 3511 cubic metres of high-strength self-compacting concrete mix poured.
Two tower cranes, six concreting booms and 34 mixer trucks were used during the work on the first of the four VVER-1200 units being constructed at the site.
The metal dome for the building was lifted into place in two stages in August and September:
Following the concreting, the dome has a thickness of 1.5 metres.
The Rosatom-designed reactors have two containment buildings, providing extra levels of protection and safety, with the outer containment designed to withstand the severest earthquakes and hurricanes.
Sergei Butсkikh, CEO of Akkuyu Nuclear JSC, said: "The outer containment is one of the main safety systems of the power unit. The robust reinforced concrete structure will reliably protect the reactor plant from external impacts. Completion of concreting of the outer containment will give us the opportunity to start installation of another important component of NPP safety - the passive heat removal system."
