ATOMMASH has assembled the semi vessels for Passive Core Flooding System Tank for the first unit of Akkuyu NPP (Turkey)

2021-07-14 13:33:00

At the Volgodonsk branch of JSC “AEM-technology” “Atommash” (part of the Rosatom machine-building division - Atomenergomash) has been assembled 6 semi-vessels of the Passive Core Flooding System tanks  ) for the first unit of Akkuyu NPP  (Turkey).


The stainless steel shells of 60 mm thick were assembled into semi-vessels and the circumferential welds were welded. Inside each tank, specialists will install grid decking, which is a prefabricated welded structure of 4 meters diameter and 495 kg mass from a round bar. Grid deckings are placed in the form of a three-level jig for the safe movement of service personnel inside the tanks.


The Passive Core Flooding System tank belongs to the items of the second safety class. The system includes 8 hydraulic tanks with a volume of 120 cubic meters. During operation at NPP, an aqueous boron acid solution heated to 60 degrees Celsius is stored in tanks. When the pressure in the primary circuit drops below a certain level, the liquid is automatically supplied to the reactor and the core is cooled.

The weight of the Passive Core Flooding System tank is 77 tons, the height is 10.5 meters, and the diameter is 4.24 meters. Atommash will manufacture the Passive Core Flooding System hydraulic tanks for the 1st and 3rd Units of the Akkuyu NPP under construction.


Akkuyu NPP in Turkey is the world's first project in the nuclear industry, implemented according to the BOO (“build-own-operate”) model. The project includes four power units with Russian VVER reactors of generation "3+" with increased safety and improved technical and economic characteristics. The design and construction of the object is carried out by the Engineering Division of the State Corporation “Rosatom”. The capacity of each power unit of NPP will be 1200 MW.





Joint Stock Company “AEM-technology” founded in 2007 within the structure of JSC “Atomenergomash”, a machine-building division of the state corporation “Rosatom”, is currently one of the leading Russian companies in the field of power engineering, a member of the Russian Engineering Unit. The structure of the company includes an engineering center staffed with experienced designers and process engineers, as well as two production sites: Branch of JSC “AEM-technology” “Petrozavodskmash” in Petrozavodsk and Branch of JSC “AEM-technology” “Atommash” in Volgodonsk