Petrozavodsk Branch of JSC “AEM-Technologies” (a part of machine-building division of Rosatom State Corporation – Atomenergomash and a Karelian regional branch of the Russian Engineering Union) has performed assembly of the reactor coolant pump sets (RCPS) housings in larger units for Akkuyu NPP (Turkey), power unit No. 3.
At the first stage the internal parts of the RCPS (the guide vanes) were manufactured. After that these were connected to the flanges with the circumferential weld joints. At present the next manufacturing operation was performed, namely, assembly with the spherical forged blank. After welding operation the items are to be sent further for machining.
The RCPS body is an item of the first safety class. At a nuclear power plant the reactor coolant pump set provides coolant circulation in the primary circuit and operates under pressure of about 16 MPa and at temperature of 300 °С. The scope of supply for one power unit includes four RCPS spherical housings.
Akkuyu NPP is the first nuclear-industry-related project in the world being implemented pursuant to BOO (“build-own-operate”) approach. The project Akkuyu NPP includes four power units equipped with Russian III+ generation VVER-reactors with increased safety and advanced technical and economic characteristics. Power of each NPP unit will be 1200 MW. Principal stages of construction and manufacture of equipment are supervised by the Nuclear Regulatory Agency of the Republic of Turkey (NDK).