One of the sections is lifted under clear night skies (Image: Akkuyu Nuclear JSC)
The roof is formed from nine sections, weighing between 95 and 175 tonnes and measuring 61 metres long, with a Liebherr 13000 crawler crane used. Each section had to be installed to an accuracy of within 10 millimetres.
Sergei Butskikh, first deputy director general of Akkuyu Nuclear JSC, said: "Installing roof trusses in a turbine hall is a complex task that requires a high degree of attention to detail and flawless execution. Despite the strict schedule and difficult weather conditions, the team of builders successfully completed the task. We are proud of the results achieved and thank each employee for their diligence and professionalism. At the next stage, we will begin installing the main units and components of the turbogenerator unit."
The section is lowered into place (Image: Akkuyu Nuclear JSC)
Akkuyu, in the southern Mersin province, is Turkey's first nuclear power plant. Rosatom is building four VVER-1200 reactors, under a so-called BOO (build-own-operate) model. According to the terms of the 2010 Intergovernmental Agreement between the Russian Federation and the Republic of Turkey, the commissioning of the first power unit of the nuclear power plant must take place within seven years from receipt of all permits for the construction of the unit.
The licence for the construction of the first unit was issued in 2018, with construction work beginning that year. Nuclear fuel was delivered to the site in April 2023. Turkey's Nuclear Regulatory Agency issued permission for the first unit to be commissioned in December, and in February it was announced that the reactor compartment had been prepared for controlled assembly of the reactor - and the generator stator had also been installed in its pre-design position.
The aim is for unit 1 to begin supplying Turkey's energy system in 2025. When the 4800 MWe plant is completed it is expected to meet about 10% of Turkey's electricity needs, with the aim that all four units will be operational by the end of 2028.
