Name of the Project
Akkuyu nuclear power plant (NPP) project.

Location
Mersin, Türkiye.

Project Owner/s
Akkuyu Nuclear, comprising Inter RAO UES JSC, Rosenergoatom JSC, Atomtechenergo JSC, Atomenergoremont JSC and Rusatom Energy International JSC.

Project Description
The Akkuyu NPP will be based on an NPP-2006 serial project. The 4 800 MWe plant will comprise four VVER1200 reactors and is expected to meet about 10% of Türkiye’s electricity needs.

The power unit includes a reactor plant and a turbine plant.

The primary circuit is radioactive and comprises a reactor, four reactor coolant loops, four reactor coolant pumps, heating parts of four steam generators and one steam pressuriser.

The secondary circuit is not radioactive. It comprises steam generators; fresh steam conduits; one turbine unit comprising a turbine plant and a turbine generator; condensate pumps; a system of low-pressure regenerative heaters; a turbine condensate system; deaerators; a feedwater system, including feedwater pumps; and a system of high-pressure regenerative heaters.

The turbine is equipped with a condensing unit and regenerative installation for heating the feedwater and separators, with unregulated steam extraction for the NPP’s auxiliary needs and heating chemically treated water additives in the circuit.

Capital Expenditure
The project is estimated at $20-billion.

Planned Start/End Date
The aim is for the first unit of the plant to start supplying Türkiye's energy system in 2025, and for all four units to be operational by the end of 2028.

Latest Developments
Russian and Turkish specialists have installed the dome of the outer containment (OC) in the design position at Unit 1 of the Akkuyu NPP. It is the last component of the OC and is one of the physical barriers of the NPP defence-in-depth.

The dome weighs 147.6 t and has a diameter of 34.7 m. The installation of the heavy metal structure in the design position took six hours and was conducted using the world's most powerful tracked self-propelled crane. 

The total weight of the dome is about 500 t. Wall thickness after concreting will be 1.5 m.

The outer containment is formed of reinforced concrete and is designed to withstand earthquakes with an intensity of up to 9 points on the MSK-64 scale, hurricanes with a force of up to 60 m/s, tsunamis and shock waves up to 10 m high.

Modern Russian-designed power units with VVER-1200 reactors are equipped with a system of double (inner and outer) containments, which ensure the maximum level of safety of the NPP and add additional strength to the reactor building. In addition to the OC, there is also an inner containment. It ensures leak-tightness of the reactor building, acts as support for pipelines and a polar crane that is used for nuclear reactor maintenance operations at the NPP operation stage.

Key Contracts, Suppliers and Consultants
Rosatom (construction of VVER-1200 reactors under a build, own, operate model); Titan2 Ic İçtaş İnşaat Anonim Şirketİ (construction contractor); GE Steam Power and AEM Technology, a joint venture between AtomEnergoMash and General Electric, or GE (design and supply of the equipment and systems for the whole conventional island); JSC Tyazhmash (core melt trap); and Nukem Technologies and NIKIMT-Atomstroy JSC (supply of the equipment for compacting solid radioactive waste).

Contact Details for Project Information
Akkuyu NPP JSC, tel +90 312 442 60 00, fax +90 312 442 60 16 or email info@akkuyu.com.