DEVICE FOR REMOVING RADIOACTIVE VAPOUR-GAS MIXTURE FROM INTER-SHELL SPACE Russian patent published in 2010 - IPC G21C13/10 G21C15/18 

FIELD: nuclear physics.

SUBSTANCE: invention relates to atomic power engineering, and specifically to localising safety systems on an atomic power station with two protective shells, and can be used in devices for maintaining a vacuum in the inter-shell space in case of failure of electrically powered ventilation systems. The device for removing radioactive vapour-gas mixture from inter-shell space consists of a filter unit of the active ventilation system with an electric fan, a passive filtration unit, a convector whose heat-exchange channels are joined to pipes of the heat line of the ejector, and a gas holder. Between the inter-shell space and the filtration system there is an ejector whose gas-ejecting nozzle is connected to the gas holder or another container with compressed gas or air. The gas-ejecting nozzle is connected to the inter-shell space and the outlet nozzle is connected to a branching line one branch of which is connected to the active ventilation system, and the other to the passive filtration system.

EFFECT: invention is aimed at increasing safety of an atomic power station by preventing accidental emission of radioactive vapour-gas mixture during accidents (including off-design) on atomic power stations and maintaining activity to the extent of the sanitary protection zone of the atomic power station.

1 cl, 1 dwg