Vertical type steam generator manufactured by Westinghouse Electric Corporation (USA): 1 – inlet of coolant of the primary cooling circuit; 2 – bottom part of the vessel; 3 – feed water inlet; 4 – upper part of the vessel; 5 – second stage of moisture separation; 6 – steam outlet; 7 – first stage of moisture separation (swirl-vane); 8 – anti-vibration tube supports; 9 – tube bundles; 10 – spacer grids; 11 – divider plate for flow distribution; 12 – tube sheet; 13 – separating partition; 14 – outlet of coolant of the primary cooling circuit