High-performance precoat fire fighting system of oil tanks consist of pipelines, put into a tank. The pipeline is equipped with: full-opening valve, safety bursting disk, reverse valve and high-pressure foamer, connected with fire-extinguishing tank truck (or with automatic fire fighting system) with water tank, fluorine synthetical foaming agent tank and mixer pump.
As a fire fighting mean a film-forming fluorine-containing foaming agent is used. It is foam substance, relative density of which is lighter than oil. Foam doesn't absorb flammable liquid and forms a gas-proof film. It has effective surface activity to restore in the case of bursting. Such features provide quick fire suppression, excepting repeated ignition.