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
The first standby diesel power plant (SDPP) at Akkuyu NPP Unit 1 has been successfully launched. Akkuyu Nuclear announced on February 21 that equipment commissioning specialists had started the installation at idle and started preparations for a step-by-step verification of its operation under load. In total, three standby diesel generator sets (DGS) will operate at each unit of the NPP.

After activation, about 50 control operations will be performed on the DGS in various operating modes. Once specialists confirm the reliability of all DGS systems at the rated power level, the installation will be switched to "on-duty" mode. In this mode, the standby diesel generator operates continuously during NPP operation. The time required to receive the SDPP load does not exceed 15 seconds from the moment a start signal is received. The entire process is automated. Additionally, placing the diesel generators on duty is a mandatory requirement for the start of the reactor’s cold and hot tests.

Standby diesel power plants are key components of NPP safety systems. Each unit of the Akkuyu NPP is equipped with three such power plants, ensuring autonomous power supply in the event of a main power shutdown. Each SDPP contains a diesel generator set. 

Together, the three diesel generators in each unit will be able to provide electric power to all required systems for at least 72 hours without refuelling.

Key Contracts, Suppliers and Consultants
Rosatom State Corporation (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.