FIELD: fire-fighting, particularly to prevent or suppress fire in closed space.
SUBSTANCE: method involves supplying oxygen displacing gas in the room to provide the first inert level characterized by reduced oxygen content in comparison with natural one; additionally stepwise or rapidly supplying oxygen displacing gas into the room to provide several different inert levels with greater oxygen content reduction. Stepwise gas supply is performed if needed. Rapid oxygen supply is carried out in the case of fire outbreak. Device for above method realization is also disclosed. The device comprises oxygen sensing means used to detect oxygen content in predetermined room and oxygen displacing gas source.
EFFECT: increased simplicity and reduced cost of displacing gas storage.
17 cl, 5 dwg
