SYSTEM OF PASSIVE SAFETY OF ATOMIC POWER STATION Russian patent published in 1995 - IPC

FIELD: nuclear technology. SUBSTANCE: for increase of safety of atomic power station with double ventilated protective envelopes - inner 4 and outer 3 the latter is provided with ventilation system 5 which gas blowing plant 7 is connected to turbine 18 of additional circuit 14 with readily boiling carrying agent. In case of emergency with loss of pressure of first circuit and of sources of power supply heat liberating under envelope 4 is transferred into team generator 17 with the aid of heat exchanger 20. Condenser 13 is located above steam generator in withdrawing pit 11 which ensures natural circulation of heat transfer agent. Operation of gas blowing plant 7 keeps some rarefaction in space between envelopes 3 and 4. Air from this space recycles in system and is cleaned in filter 6 and its excess penetrating through leakages is discharged through filter 9 and exhaust stack of atomic power station which prevents radio nuclides from finding their way into atmosphere. Removal of heat from under inner envelope 4 is intensified thanks to its extraction into additional circuit 14. EFFECT: increased safety of atomic power station. 3 cl, 1 dwg, 1 tbl