Dry chemical system for extinguishing difficult fuel or flammable liquid fires in an industrial tank with a roof creating a space above the liquid

摘要

A system and apparatus for extinguishing a fire of a difficult to extinguish fuel or flammable liquid in a storage tank fitted with at least a significant top roof portion, the system including timely discharge of dry powder into a significantly enclosed space or cavity defined between the fuel/liquid surface, or between any floater remaining thereon, and the fixed top roof portion, and apparatus to facilitate the system.