METHOD FOR LOCAL SUPPRESSION OF FIRE ZONE Russian patent published in 2000 - IPC

FIELD: fire-fighting facilities. SUBSTANCE: method involves using inner main pipe and outer main pipe positioned on area from which fire suppression is to be performed. Main pipes are aligned one with the other and connected with their ends. Arrangement and diameter of openings of inner main pipe and pattern of equally spaced openings of outer main pipe provide uniform flow rate. Method allows equal action to be applied to the whole extent of elongated zone of fire. EFFECT: increased efficiency and uniform flow rate providing high-quality fire suppression.