Chapter 26 Fire Detection Suppression and Smoke Control Systems Flashcards
A device that speeds up the removal of the air from a dry pipe or preaction sprinkler system. An ___________ reduces the time required for water to start flowing from sprinkler heads.
Accelerator
A system that captures a sample of air from a room or enclosed space and passes it through a smoke detection or gas analysis device.
Air sampling detector
An automatic or manually operated device in a fire alarm system that, when activated, causes the system to indicate an alarm condition.
Alarm initiating device
An audible and/or visual device in a fire alarm system that makes occupants or other persons aware of an alarm condition.
Alarm notification appliance
A valve that signals an alarm when a sprinkler head is activated and prevents nuisance alarms caused by pressure variations.
Alarm valve
A feature of automatic fire detection and alarm systems to reduce unwanted alarms wherein smoke detectors report alarm conditions for a minimum period of time or confirm alarm conditions within a given time period after being reset, in order to be accepted as a valid alarm initiation signal.
Alarm verification feature
A standpipe system permanently attached to a water supply capable of supplying the system demand at all times, containing air or nitrogen under pressure, the release of which opens a dry pipe valve to allow water to flow into the piping system and out of the opened hose valve.
Automatic dry standpipe system
The working ends of a sprinkler system, which serve to activate the system and to apply water to the fire.
Automatic sprinkler heads
A system of pipes filled with water under pressure that discharges water immediately when a sprinkler head opens.
Automatic sprinkler system
A standpipe system containing water at all times that is attached to a water supply capable of supplying the system demand and that requires no action other than opening a hose valve to provide water at hose connections.
Automatic wet standpipe system
A smoke detection device that projects a narrow beam of light across a large open area from a sending unit to a receiving unit. When the beam is interrupted by smoke, the receiver detects a reduction in light transmission and activates the fire alarm.
Beam detector
A device with components made from two distinct metals that respond differently to heat. When heated, the metals will bend or change shape.
Bimetallic strip
A fire suppression system designed to protect either a single room or series of rooms by flooding the area with carbon dioxide.
Carbon dioxide extinguishing system
A system or group of systems in which the operations of circuits and devices are transmitted automatically to, recorded in, maintained by, and supervised from a listed central station that is controlled and operated by a person, firm, or corporation whose business is the furnishing, maintaining, or monitoring or supervised alarm systems.
Central station service alarm system
A sprinkler head activated by a chemical pellet that liquefies at a preset temperature.
Chemical-pellet sprinkler head
A standpipe system designed for use by fire department personnel only. Each outlet should have a valve to control the flow of water and a 2.5-in (65-mm) male coupling for fire hose.
Class I standpipe
A standpipe system designed for use by occupants of a building only. Each outlet is generally equipped with a length of 1.5-in. (38-mm) single-jacket hose and a nozzle, which are preconnected to the system.
Class II standpipe
A combination system that has features of both Class I and Class II standpipes.
Class III standpipe
A self-contained extinguishing system that expels an electrically nonconducting, volatile, or gaseous fire extinguishant that does not leave a residue upon evaporation.
Clean agent extinguishing system
A fire alarm system design that divides a building or facility into zones and has audible notification devices that can be used to identify the area where an alarm originated.
Coded system
A fire alarm system design that divides a building or facility into zones and has audible notification devices that can be used to identify the area where an alarm originated.
Cross-zoned system
A sprinkler head that has no release mechanism; the orifice is always open.
Deluge head
A sprinkler system employing open sprinklers or nozzles that are attached to a piping system that is connected to a water supply through a valve that is opened by the operation of a detection system installed in the same areas as the sprinklers or the nozzles. When this valve opens, water flows into the piping system and discharges from all sprinklers or nozzles attached thereto.
Deluge sprinkler system
A water supply control valve intended to be operated by actuation of an automatic detection system that is installed in the same area as the discharge devices.
Deluge valve
A manual fire alarm activation device that requires two steps to activate the alarm. The user must push in a flap, lift a cover, or break a piece of glass before activating the alarm.
Double-action pull station
An automatic fire-extinguishing system that discharges a dry-chemical agent.
Dry-chemical extinguishing system
A sprinkler system employing automatic sprinklers that are attached to a piping.
Dry pipe sprinkler system
The valve assembly on a dry pipe sprinkler system that prevents water from entering the system until the air pressure is released.
Dry pipe valve
A type of smoke detector that samples the air through the air distribution system ductwork or plenum; upon detecting smoke, the detector sends a signal to shut down the air distribution unit, close any associated smoke damper, or initiate smoke control system operation.
Duct detector
A sprinkler head designed to react quickly and suppress a fire in its early stages.
Early-suppression fast-response sprinkler head (ESFR)
A device that accelerates the removal of the air from a dry pipe or preaction sprinkler system.
Exhauster
A warning signal that alerts occupants of a fire emergency.
Fire alarm
A component of the fire alarm system, provided with primary and secondary power sources, which receives signals from initiating devices or other fire alarm control units and processes these signals to determine part of all of the required fire alarm system output function(s).
Fire alarm control unit (FACU)
A signal that results from the manual or automatic detection of a fire alarm condition.
Fire alarm signal
A connection through which the fire department can pump supplemental water into the sprinkler system, standpipe, or other system furnishing water for fire extinguishment to supplement existing water supplies.
Fire department connection (FDC)
Any fire alarm device or system or fire-extinguishing device or system, or combination thereof, that is designed and installed for detecting, controlling, or extinguishing a fire or otherwise alerting occupants, or the fire department, or both.
Fire protection system
A device that responds when its operating element become heated to a predetermined level.
Fixed-temperature heat detector
A radiant energy-sensing fire detector that detects the radiant energy emitted by a flame.
Flame detector
A sprinkler head with a liquid-filled bulb. The sprinkler head becomes activated when the liquid is heated and the glass bulb breaks.
Frangible-bulb sprinkler head
A sprinkler head with an activation mechanism that incorporates two pieces of metal held together by low-melting-point solder. When the solder melts, it releases the link, and water begins to flow.
Fusible-link sprinkler head
A device that detects the presence of a specified gas concentration. ___ ________s can be either spot-type or line-type detectors.
Gas detector
A system often installed in areas where computers or sensitive electronic equipment is used or where valuable documents are stored.
Gaseous suppression system
A liquefied gas extinguishing agent that extinguishes fire by chemically interrupting the combustion reaction between fuel and oxygen. ___________ ______ leave no residue.
Halogenated agents
A fire detector that detects either abnormally high temperature or rate of temperature rise or both.
Heat detector
The principle of using a small amount of radioactive material to ionize the air between two differentially charged electrodes to sense the presence of smoke particles. Smoke particles entering the ionization volume decrease the conductance of the air by reducing ion mobility. The reduced conductance signal is processed and used to convey an alarm condition when it meets preset criteria.
Ionization smoke detection
Wire or tubing that can be strung along the ceiling of large open areas to detect an increase in heat.
Line detector
An unwanted activation of an alarm initiating device caused by a person acting with malice.
Malicious alarm
A standpipe system with no permanently attached water supply that relies exclusively on the fire department connection to supply the system demand.
Manual dry standpipe system
A device with a switch that either opens or closes a circuit, activating the fire alarm.
Manual pull station
An alarm system that provides no information at the alarm control unit indicating where the activated alarm is located.
Noncoded alarm
An unwanted activation of a signaling system or an alarm initiating device in response to a stimulus or condition that is not the result of a potentially hazardous condition.
Nuisance alarm
A measure of the percentage of light transmission that is blocked between a sender and a receiver unit.
Obscuration rate
A sprinkler control valve with a valve stem that moves in and out as the valve is opened or closed.
Outside screw and yoke (OS&Y) valve
A sprinkler head designed to be mounted on the underside of sprinkler piping so that the water stream is directed in a downward direction.
Pendent sprinkler head
A detector that use a light beam and a photocell to detect larger visible particles of smoke. When visible particles of smoke enter the inner chamber, they reflect some of the light onto the photocell, thereby activating the alarm.
Photoelectric smoke detector
A sprinkler control valve with an indicator that reads either open or shut depending on its position.
Post indicator valve (PIV)
A sprinkler system employing a piping system that contains air that might or might not be under pressure, with a supplemental detection system installed in the same areas as the sprinklers.
Preaction sprinkler system
A type of sprinkler system valve that holds back water until a manual emergency release is activated, a fire sprinkler head activates, a fire detector activates, or a combination of sprinkler head and initiating device activation takes place.
Preaction valve
A fire alarm system that transmits a signal to a monitoring location owned and operated by the facility’s owner.
Proprietary supervising alarm system
A system of alarm initiating devices, transmitting and receiving equipment, and communication infrastructure (other than a public telephone network) used to communicate with the communications center to provide any combination of manual or auxiliary alarm service.
Public emergency alarm supporting system
A device that responds when the temperature rises at a rate exceeding a predetermined value.
Rate-of-rise heat detector
A secondary fire alarm notification unit usually located near the front door of a building, that provides event information and frequently has the same control functionality as the main fire alarm control unit.
Remote annunciator
A fire alarm system that sounds an alarm in the building and transmits a signal to the fire department or an off-premises monitoring location.
Remote supervising station alarm system
A sprinkler system designed to protect dwelling units.
Residential sprinkler system
A sprinkler that is mounted on a wall and discharges water horizontally into a room.
Sidewall sprinkler head
A manual fire alarm activation device in which the user takes a single step—such as moving a lever, toggle, or handle—to activate the alarm.
Single-action pull station
A detector comprising an assembly that incorporates a sensor, control components, and an alarm notification appliance in one unit operated from a power source either located in the unit or obtained at the point of installation.
Single-station smoke alarm
A mechanical system that can create positive or negative pressure to control, alter, and limit the spread of smoke and gases.
Smoke control system
A device that detects visible and invisible products of combustion (smoke) and sends a signal to a fire alarm control unit.
Smoke detector
A single smoke detector or heat detector device. These devices are often spaced throughout an area.
Spot-type detector
The network of piping in a sprinkler system that delivers water to the sprinkler heads.
Sprinkler piping
An arrangement of piping, valves, and hose connections installed in a structure to deliver water for fire hose.
Standpipe system
An alarm system that communicates between the protected property and a constantly attended location that will receive, interpret, and take the appropriate action to handle the alarm condition.
Supervising station alarm system
A signal that results from the detection of a supervisory condition that indicates the need for action.
Supervisory signal
A standard fire alarm audible signal for alerting occupants of a building.
Temporal-3 pattern
A signal initiated by a dispatch system or device indicative of a fault in a monitored circuit or component.
Trouble signal
Any alarm that occurs that is not the result of a potentially hazardous condition.
Unwanted alarm
A sprinkler head designed to be installed on top of the supply piping; it is usually marked SSU (“standard spray upright”).
Upright sprinkler head
A sprinkler control valve that is mounted on the outside wall of a building. The position of the indicator tells whether the valve is open or shut.
Wall post indicator valve
An attachment to the sprinkler system that detects a predetermined water flow and is connected to a fire alarm system to initiate an alarm condition.
Water flow alarm device
A fixed fire protection system that discharges very fine water mist particles through specialized nozzles that extinguish by displacing oxygen, cooling, and blocking radiant heat.
Water mist system
An audible alarm notification device that is powered by water moving through the sprinkler system.
Water-motor gong
A system that discharges a proprietary liquid extinguishing agent. It is often installed over stoves and deep-fat fryers in commercial kitchens.
Wet-chemical extinguishing system
The most common and least expensive type of automatic sprinkler system. As its name implies, the piping in a wet system is always filled with water. When a sprinkler head activates, water is immediately discharged onto the fire.
Wet pipe sprinkler system
A fire alarm system design that divides a building or facility into zones so that the area where an alarm originated can be identified.
Zoned system
The most current codes require new homes to have a smoke alarm
A. on every floor.
B. in every room.
C. in every bedroom and on every floor level.
D. in every bedroom, hallway, and floor level.
C. in every bedroom and on every floor level.
Which type of detectors are triggered by the invisible products of combustion?
A. Ionization smoke detectors
B. Photoelectric smoke detectors
C. Heat detectors
D. Spot detectors
A. Ionization smoke detectors
Many buildings have an additional fire alarm control display panel in the front of the building
called a
A. remote alarm station.
B. remote control panel.
C. remote annunciator.
D. remote visual board.
C. remote annunciator.
Fire alarm systems are activated by the
A. remote annunciator.
B. ESFR device.
C. alarm initiation device.
D. line detector.
C. alarm initiation device.
Which type of fire alarm requires two steps before the alarm will activate?
A. Single-action pull-station
B. Double-action pull-station
C. Protected pull-station
D. Tamper alarm
B. Double-action pull-station
A smoke detector is designed to sense the presence of
A. smoke.
B. heat.
C. fire.
D. toxic gases.
A. smoke.
Which type of detectors use wire or tubing strung along the ceiling of large open areas to detect an increase in heat?
A. Spot detectors
B. Heat detectors
C. Beam detectors
D. Line detectors
D. Line detectors
Which type of detectors detect the electromagnetic light waves produced by a flame?
A. Beam detectors
B. Line detectors
C. Air sampling detectors
D. Flame detectors
D. Flame detectors
Which type or detectors are calibrated to detect the presence or a specific gas that is created by combustion?
A. Gas detectors
B. Combustion detectors
C. Beam detectors
D. Rate-of-calibration detectors
A. Gas detectors
The activation of a single smoke detector plus the activation of a second smoke detector is characteristic of a
A. double-pull alarm system.
B. verification system.
C. cross-zoned system.
D. nuisance system.
C. cross-zoned system.
The temporal-3 pattern is a(n)
A. verification system.
B. standardized audio pattern.
C. alarm activation system.
D. photoelectric detector system.
B. standardized audio pattern.
Which type of sprinkler head has a glass bulb filled with glycerin to hold the cap in place?
A. Fusible-link sprinkler head
B. Chemical-pellet sprinkler head
C. Deluge head
D. Frangible-bulb sprinkler head
D. Frangible-bulb sprinkler head
Which type or sprinkler head is triggered by the melting of a metal alloy at a specific temperature?
A. Fusible-link sprinkler head
B. Frangible-bulb sprinkler head
C. ESFR sprinkler head
D. Pendant sprinkler head
A. Fusible-link sprinkler head
Which type or valve is mounted on the outside wall or a building?
A. PIV
B. OS&Y valve
C. WPIV
D. Support control valve
C. WPIV
To allow the fire department’s engine to pump water into the sprinkler system, each sprinkler system should also have a
A. primary feeder.
B. secondary feeder.
C. pumper outlet.
D. fire department connection.
D. fire department connection.
Most modern sprinkler systems are connected to the building’s fire alarm system to alert the occupants by a
pressure switch or a
A. tamper switch.
B. flow switch.
C. clapper switch.
D. trigger switch.
B. flow switch.
In most cases, the entire sprinkler system can be shut down by
A. closing the main control valve.
B. using the remote annunciator panel.
C. deactivating the alarm.
D. using a sprinkler wedge.
A. closing the main control valve.
A network of pipes and outlets for fire hoses built into a structure to provide water for firefighting purposes is
called a
A. residential pipe system.
B. grid system.
C. standpipe system.
D. closed flow system.
C. standpipe system.
The network of pipes and outlets for fire hoses built into a structure and designed for use by the building
occupants is designated as belonging to
A. Class I.
B. Class II.
C. Class II l.
D. Class IV.
B. Class II.
Which of the following is the name for a special extinguishing system that operates by discharging a gaseous agent into the atmosphere at a concentration that will extinguish a fire?
A. Wet chemical extinguishing system
B. Clean agent extinguishing system
C. Dry chemical extinguishing system
D. Carbon dioxide extinguishing system
B. Clean agent extinguishing system
______ detectors are triggered by the visible products of combustion.
Photoelectric
The fire alarm control panel serves as the _______ of the fire alarm system.
brain
The fire alarm control panel should monitor the entire alarm system to detect any _______.
faults
A(n) _______ detector is a type of photoelectric smoke detector used to protect large open areas.
beam
____-__-____ detectors will be activated if the temperature of the surrounding air rises more than a set amount in
a given time period.
Rate-of-rise
A(n) _______ alarm occurs when an alarm system is activated by a condition that is not really an emergency.
unwanted
A(n) _____ ___ system sends a signal directly to the fire department or to a monitoring location via telephone or radio signal.
remote station
_______ sprinkler heads are designed for horizontal mounting and projecting out from a wall.
Sidewall
The network of pipes that delivers water through the sprinkler system is the sprinkler _______.
piping
The Class _______ standpipe is designed for use by fire department personnel only.
I
True/False
Smoke alarms can be either hard-wired to a 110-volt electrical system or battery operated.
True
True/False
A photoelectric detector has a small amount of radioactive material inside a chamber.
False
True/False
An activated alarm sounds throughout a building.
False
True/False
Heat detectors provide reliable life-safety protection.
False
True/False
Bimetallic strips are made to respond to a rapid increase in temperature.
True
True/False
Nuisance alarms are caused by individuals who deliberately activate fire alarms when there is no fire.
False
True/False
Fire alarm systems can control doors and elevators.
True
True/False
A central station is operated by the fire department.
False
True/False
An activated sprinkler head in an automatic sprinkler system triggers the water-motor gong.
True
True/False
All sprinkler systems should be equipped with a method for sounding an alarm whenever there is water flowing in the pipes.
True
