SYSTEM FOR PASSIVE HEAT DISSIPATION FROM INNER SPACE OF NUCLEAR REACTOR CONTAINMENT Russian patent published in 1999 - IPC

FIELD: nuclear reactors. SUBSTANCE: system 15 for heat dissipation from inner space 50 of containment 3 of nuclear reactor 2 within indefinite time interval has first heat-transfer apparatus 15 mounted outside containment 3 which is vertically immersed in tank 11 connected to external side of upper wall 7 of containment 3 and second heat- transfer apparatus 25 arranged inside space 50; both heat-transfer apparatuses are hydraulically joined together to form closed loop 28 with pipeline 23, 24 filled with liquid coolant. Tank 11 is provided with cover 90 forming, together with external air intake, first channel 12 and together with draft tube 14, second channel 13. Joint between mentioned channels is locked with water contained in tank 11 when the latter is filled up to desired level. EFFECT: provision for arranging fully passive system initiated due to natural physical phenomena. 9 cl, 10 dwg