Atommash, the Volgodonsk branch of Russia’s AEM-Technologies part of Rosatom's mechanical engineering division Atomenergomash) has manufactured the first steam generator for unit 2 of the Akkuyu NPP under construction in Turkey. Manufacturing a steam generator includes the assembly and welding of housings from separate shells and nozzles, the manufacture of bottoms, drilling of the primary circuit collectors, the manufacture of coils and the installation of internals, as well as a set of control measures.

The final hydraulic and vacuum testing of the heat exchanger has been completed. After all openings of the steam generator are closed with special plugs, the first and second circuits were filled with distilled water. Experts apply a pressure of 24.5 MPa (243 atmospheres) to the primary circuit zone, while the water temperature is 350 degrees Celsius. The second circuit receives a pressure of 11.45 MPa (115 atmospheres), while the water is heated to 300 degrees. Both indicators are 1.4 times higher than the operating pressure. The tests confirmed the strength and density of the base metal and welds of the steam generator elements with supports.

The Akkuyu NPP construction project is being implemented by Akkuyu Nuclear following an intergovernmental agreement signed between Russian and Turkey in 2010. The Akkuyu NPP, with four VVER-1200 units, is being constructed on a build-own-operate basis by Rosatom, with commissioning of the first unit planned for 2023.