What happened
Concrete casting has been completed for the turbine-hall building slab at Unit 4 of the Akkuyu Nuclear Power Plant, according to Enerji Günlüğü. The slab is positioned 18 metres above ground level.
The completed element is intended to act as a horizontal load-bearing structure within the building. It is designed to stiffen the structure and withstand the high dynamic loads associated with operating equipment, in line with project requirements.
At this elevation, the slab will form the floor of the turbine hall. It is also intended to provide the level from which maintenance can be carried out on principal equipment, including the turbine, turning gear and generator.
Following the casting milestone, Akkuyu specialists began preparatory activities for the foundation of the turbine unit. The report does not provide a timetable for the foundation work or subsequent equipment installation.
Why it matters
The work completes a significant structural stage in construction of the Unit 4 turbine-hall building and takes the project into preparation for the turbine foundation. The milestone concerns the part of the plant that will house equipment used in power generation rather than the reactor building itself.
For organisations following Türkiye’s nuclear construction programme, the update offers a defined indicator of activity at the fourth power unit. Rosatom is constructing Akkuyu, and work is continuing across all four of the plant’s power units, according to the report.
The slab’s specified role also illustrates the sequencing of the build: the building floor and its load-bearing support are being established before work advances on the turbine-unit foundation. Its planned maintenance function links the civil structure to future access for major turbine-hall equipment.
What to watch next
The immediate item to monitor is progress on Unit 4’s turbine-foundation preparation. Further updates could clarify when foundation construction proceeds and how that work aligns with activity at the other three units.
Readers should distinguish this civil-construction milestone from commissioning or operational progress: the available information confirms completion of the slab casting and the start of foundation preparation, but gives no operating date or schedule for later stages.
