R 408.10903 Definitions; D to F.

Rule 903. (1) "Dry chemical extinguishing system" means a system of pipes or hoses, nozzles, an actuating device, an expellant gas and a container holding a dry chemical. When activated, the expellant gas carries the dry chemical in suspension to stop the combustion chain reaction. (2) "Dry chemical" means an agent, capable of extinguishing a fire, composed of very small particles, such as sodium bicarbonate, potassium bicarbonate, or monoammonium phosphate, with added particulate material supplemented by special treatment to prevent caking and providing flowability. (3) "Dry pipe system" means an automatic sprinkler system employing compressed air or other nonflammable gases in the system instead of water. When a sprinkler opens, relieving the air pressure, water pressure opens a dry pipe valve filling the system with water. This system is normally used where piping is exposed to freezing temperatures. (4) "Fire pump" or "booster pump" means a water pump used to supply water from a suction supply at a specific pressure and volume to a sprinkler or standpipe system. (5) "Fixed fire equipment" means a fire extinguishing system which is permanently mounted and portions of those systems which may be portable, such as a hose and nozzle attached to a fixed supply of extinguishing agent. (6) "Flammable liquid" means any liquid having a flashpoint below 100 degrees Fahrenheit. (7) "Flammable material" means that material which ignites easily, burns intensely, or has a rapid rate of flame spread. (8) "Foam-water spray system" means a special system, pipe-connected to a source of foam concentrate and to a water supply, equipped with appropriate devices for extinguishing agent discharge and distribution over the area or equipment to be protected.