FIRE-EXTINGUISHMENT METHOD Russian patent published in 2007 - IPC A62C3/02 

FIELD: fire-fighting, particularly fire-extinguishing or fire-protection.

SUBSTANCE: method involves delivering water saturated with carbonic acid to fire site. Water is saturated to obtain 2-6% gas saturation. After that gas-and-liquid mixture is frozen to -15÷-20°C and blocks are created of frozen gas-and-liquid mixture. Each block has 4-12 kg weight. Fire site is covered with the blocks.

EFFECT: increased fire-extinguishing efficiency due to possibility of volumetric gas-and-liquid mixture action on fire site and increased duration of gas-and-liquid mixture action due to retarded gas-and-liquid mixture evaporation.