Petrozavodsk Branch of AEM-Technologies, JSC (a member of Atomenergomash, machine engineering division of Rosatom Corporation, and Karelian Regional Branch of the Russian Engineering Union) started shipping passive core flooding system (PCFS) hydroaccumulators, which are intended for Rooppur NPP, Power Unit No. 2, the first Nuclear Power Plant under construction in People’s Republic of Bangladesh.
8 PCFS hydroaccumulators are installed per one Power Unit - thick-walled vessels of 120 m3 capacity each manufactured from stainless steel. The diameter of one item - more than 4 m, height - 10.5 m, weight - about 7.8 tons.
The first batch of 5 hydroaccumulators was shipped from Petrozavodsk by water. Going through the water way of Lakes Onega and Ladoga, a bulk carrier will deliver equipment to Saint Petersburg’s port, where a sea craft will take the cargo on board.
PCFS is the most important part of NPP safety system. It belongs to the second stage of passive systems and is intended for the abstraction of residual heat removal of primary circuit coolant. During operation hydroaccumulators are filled with aqueous solution of boric acid. When the pressure in the primary circuit falls below a certain level, the fluid is automatically fed into the reactor and the core is cooled down.
Rooppur NPP is being designed and built from a Russian design. Design and construction of the object is carried out by the Engineering Division of the Rosatom State Corporation. The power plant will consist of two units with VVER reactors with service life of 60 years with possible prolongation for 20 more years. Each unit will have capacity of 1200 MW. “AEM-technology” produces main reactor room equipment for two units of the power plant.
AEM-Technologies, Joint-Stock Company established 2007 within JSC “Atomenergomash” – the machine-building subdivision of Rosatom State Corporation – is nowadays one of the leading Russian companies in the field of power machine-building. The company consists of an engineering center staffed with experienced designers and process engineers, as well as two manufacturing sites: Petrozavodskmash, AEM-Technologies, JSC Branch in Petrozavodsk, and Atommash, AEM-Technologies, JSC Branch in Volgodonsk.