BOR-60 thermal circuit: 1 – reactor; 2 – sodium-sodium heat exchanger; 3 – pump; 4 – sodium- air heat exchanger (AHX); 5 – AHX fans; 6 – AHX buffer tank; 7 – steam generator (SG); 8 – SG buffer tank; 9 – separator; 10 – turbine generator; 11 – turbine condenser; 12 – ejector; 13 – low-pressure preheater; 14 – feedwater pump; 15 – high-pressure preheater; 16 – process condenser; 17 – deaerator.