Tianwan NPP. The Petrozavodsk branch of AEM-Technologies (part of Rosatom) has manufactured the casings of the primary circuit collectors: they are intended for the steam generators of Tianwan NPP Unit 7 (China). The delivery set for one power unit consists of 8 cases of primary circuit collectors – two for each of the four steam generators. Through the collector, heat exchange occurs between the first and second circuits of the reactor coolant and heat is removed from the core. Rosatom is constructing units 7 and 8 of the Tianwan NPP with VVER-1200 reactors.