Abstract: A method for extinguishing a full surface liquid tank fire including addressing plunge zone issues, the attack including throwing at least one primary stream over a tank wall, the stream landing with a force of impact in, and defining, a plunge zone; the method including achieving flame collapse leaving a plunge zone flame and subsequently, at least for a period of time, diminishing force of impact per unit area of a primary stream upon said plunge zone flame; alternately the method includes achieving a partial flame collapse including collapse against back tank wall portions and subsequently diminishing stream impact force upon a plunge zone including moving a plunge zone forward in the tank; the method also includes extinguishing a full surface heavy liquid tank fire by teasing the fire prior to employing a non-feathered stream to create a foam blanket.

Abstract: An industrial floor firefighting system including a grating structured to rest over a trench and a firefighting nozzle attached to the grating, the system preferably characterized in the nozzle having an adjustable discharge gap; in the nozzle barrel being structured with the grating such that the barrel bears essentially no weight from industrial objects on or passing over the grating; in having an adjustable bafflehead/barrel combination that produces a nozzle gap upstream of the nozzle discharge orifice; and/or, as well, producing an annular gap discharge and an essentially annular nozzle discharge.

Abstract: Portable wall-attachable firefighting monitor apparatus and method of use, including structure designed in combination to affix a monitor to a wall rim portion.

Abstract: Method and apparatus for extinguishing industrial tank fires of flammable/combustible liquid including achieving flame collapse, and subsequent to flame collapse achieving collapse of a remaining “smiley face”.