Fire Protection Systems Flashcards
A ___ signal identifies system problems that can influence the system’s reliability.
Trouble
A ___ warns of a fire condition by sensing a high temperature, high rate of rise in the temperature, or both.
Heat detector
A ____ system is a system that transmits a signal from a protected facility to a monitoring station operated by the facilities owner.
Proprietary
A central-station alarm system is one in which the operations of the circuits and devices are ____?
Transmitted automatically
Recorded at a central station
Maintained by a central station
Supervised by a central station
A deluge sprinkler head is unique in that it ____?
Has a head that is always open
A flame detector activates when it detects?
Radiant energy
A _____ between the sprinkler valve and water-flow alarm prevents false alarms by allowing pressure surges to dissipate before setting off the water-flow alarm?
Retard chamber
All of the following things should be thought about when working with sprinkler systems except ____?
Letting only firefighters handle replacing fused sprinkler head or resetting dry pipe valves.
All sprinklers have ____ to break the water stream into droplets and pus them to cover an area larger than a straight stream of water would?
Deflectors
Automatic or man cal mechanisms that cause a system to indicate an alarm condition are known as ____?
Alarm initiating devices
Automatic sprinkler heads are open all the time and are mostly used in deluge systems. T/F?
False
Balanced forces of air and water on opposing sides of a dry pipe valve prevent it from opening under normal circumstances. T/F?
True
Buildings protected by fire alarm systems are called____?
Protected premises
What is one place that “firefighter telephone systems” are not located in high-rise?
Bathrooms
fire alarm annunciation systems notify the fire department and others concerned of a fire’s location. T/F?
True
Fire pumps for a sprinkler system are activated when a pressure ____ caused by water flow is detected upstream of the fire pump?
Drop
What is the name of the switch that notifies the fire alarm control panel if a supply control valve is in the wrong position?
Tamper switch
What type of sprinkler system has a looped system?
Gridded
When a water motor gong is alarming, it indicates ____?
What is actively moving through sprinkler system
Which NFPA standard deals with fire alarm systems?
NFPA 72
Describe a preaction sprinkler system.
Uses elements of deluge and dry-pipe system and minimizes water damage. It resembles a dry-pipe system except it requires another detection system and a sprinkler head’s fusing for water to flow.
Which of the following detectors activates when it detects products of combustion?
Smoke detector
Why do sprinkler systems improve life safety within a structure on fire?
Sprinklers prevent flashover and fire spread outside the room of origin.
