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Terms in this set (45)
Alarm Check Valve
Type of check valve installed in the riser of an automatic sprinkler system that transmits a water-flow alarm when the water flow in the system lifts the valve clapper.
Alarm system component that transmits a signal when a change occurs; change may be the result of an action such as the activation of a manual fire alarm box, the presence of products of combustion in the atmosphere, or the automatic activation of a supervisory switch.
Electrical device used to indicate the source or location of an activated fire alarm initiating device or the status of the system. The panel may include individual lights located on a schematic map and an audible alarm signal.
Automatic Sprinkler System
System of water pipes, discharge nozzles, and control valves designed to activate during fires by automatically discharging enough water to control or extinguish a fire.
Auxiliary Alarm System
System that connects the protected property with the fire department alarm communications center by a municipal master fire alarm box or over a dedicated telephone line.
Central Station System
Alarm system that functions through a constantly attended location (central station) operated by an alarm company. Alarm signals from the protected property are received in the central station and are then retransmitted by trained personnel to the fire department alarm communications center.
Automatic valve that permits liquid flow in only one direction.
A pellet of solder, under compression, within a small cylinder, that melts at a predetermined temperature, allowing a plunger to move down and release the valve cap parts.
Pipe connecting the feed main to the branch lines on which the sprinklers are located
Part of the sprinkler assembly that creates the discharge pattern of the water.
Deluge Sprinkler System
Fire suppression system that consists of piping and open sprinklers. A fire detection system is used to activate the water or foam control valve. When the system activates, the extinguishing agent expels from all sprinkler heads in the designated area.
Automatic valve used to control water to a deluge sprinkler system.
Valve that allows piping to drain when pressure is relieved in the pipe.
Dry-Pipe Sprinkler System
Fire suppression system that consists of closed sprinklers attached to a piping system that contains air under pressure. When a sprinkler activates, air is released that activates the water or foam control valve and fills the piping with extinguishing agent.
Pipe connecting the sprinkler system riser to the cross mains.
Fire Alarm Control Panel (FACP)
System component that receives input from automatic and manual fire alarm devices and may provide power to detection devices or communication devices.
Fire Command Center
Designated room or area in a structure where the status of the fire detection, alarm, and protection systems is displayed and the systems can be be manually controlled; may staffed or unstaffed and can be accessed by the fire department.
Firefighter's Smoke-Control Station (FSCS)
Interface between the smoke management system and the fire response forces.
Device used to detect gases produced by a fire within a confined space.
Fire Protection System
System designed to protect structure and minimize loss due to fire.
Detection and alarm device used in some detection systems (generally in high-hazard areas) that detect light/flames in the ultraviolet wave spectrum (UV detectors) or detect light in the infrared wave spectrum (IR detectors).
Small glass vial fitted into a detector or sprinkler. The glass vial is partly filled with a liquid that expands as heat increases. At a predetermined temperature, vapor pressure causes the glass bulb to break, which activates the device.
Connecting link device that fuses or melts when exposed to heat; used in sprinklers, fire doors, dampers, heat detectors, and ventilators.
Alarm-initiating device that is designed to be responsive to a predetermined rate of temperature increase or to a predetermined temperature level.
Permanently fixed, private standpipe hoseline.
Water main valve that visually shows the open or closed status of the valve.
Ionization Smoke Detector
Type of smoke detector that uses a small amount of radioactive material to make the air within a sensing chamber conduct electricity.
Local Energy System
Auxiliary fire alarm system that has its own power source.
Manual Pull Station
Manual fire alarm activator.
Photoelectric Smoke Detector
Type of smoke detector that uses a small light source, either an incandescent bulb or a light-emitting diode (LED), to detect smoke by shining light through the detector's chamber. Smoke particles reflect the light into a light-sensitive device called a photocell.
Preaction Sprinkler System
Fire suppression system that consists of closed sprinkler heads attached to a piping system that contains air under pressure and a secondary detection system; both must operate before the extinguishing agent is released into the system.
Proprietary Alarm System
Fire protection system owned and operated by the property owner.
Protected Premises System
Alarm system that alerts and notifies only occupants on the premises of the existence of a safely exit fire so that they can the building and call the fire department. If a response by a public safety agency (police or fire department) is required, an occupant hearing the alarm must notify the agency.
Rate-of-Rise Heat Detector
Temperature-sensitive device that sounds an alarm when the temperature changes at a preset value, such as 12°-15°F (7 C - 8 C) per minute.
Remote Receiving System
System in which alarm signals from the protected premises are transmitted over a leased telephone line or by radio signal to a remote receiving station with a 24-hour staff, usually the municipal fire department's alarm communications center.
Chamber that catches and slows the excess water that may be sent through the alarm valve of an automatic sprinkler system during momentary water pressure surges. This reduces the chance of false-alarm activation. The retard chamber is installed between the alarm check valve and alarm-signaling equipment.
Vertical water pipe used to carry water for fire protection systems above ground such as a standpipe riser or sprinkler riser.
An auxiliary fire alarm system that connects a public fire alarm reporting system to initiating devices within a protected premises. When an initiating device in the protected property operates, it activates the public fire alarm sending an alarm to the public communication center.
Device designed to sound an alarm when the products of combustion are present in the room where the device is installed. The alarm is built into the device rather than being a separate system.
Alarm-initiating device designed to actuate when visible or invisible products of combustion (other than fire gases) are present in the room or space where the unit is installed.
Smoke Management System
system that limits the exposure of building occupants to smoke may include a combination of compartmentation, control of smoke migration from affected area, and a means of removing smoke to the exterior of the building
Water flow discharge device in a sprinkler system; consists of a threaded intake nipple, a discharge orifice, heat-actuated plug, and a deflector to create an effective fire stream pattern that is suitable for fire control.
Wet or dry system of pipes in a large single-story or multistory building with fire hose outlets installed in different areas or on different levels of a building to be used by firefighters and/or building occupants. The system is used to provide for quick deployment of hoselines during fire fighting operations.
Detector that recognizes movement of water within the sprinkler or standpipe system. Once movement is noted, the waterflow detector gives a local alarm and/or may transmit the alarm.
Wet-Pipe Sprinkler System
Fire suppression system is built into a structure or site; piping contains either water or foam solution continuously; activation of a sprinkler causes the extinguishing agent to flow from the open sprinkler.
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