F/A 9-12 Flashcards
What are the three sides of the fire triangle?
Oxygen, Fuel, and Ignition Source.
What are the three products of combustion?
Heat, Radiant Energy, and Smoke.
Smoke particles are typically within ____ to _____ microns in size.
.01 to 5,000
A condition where a burning fuel produces smoke without flames (smoldering) is known as ____.
Pyrolysis
What kind of detector is most appropriate for an elevator lobby in an apartment building?
A spot-type smoke detector.
What kind of detector is most appropriate for an unenclosed, unheated parking garage?
A heat detector.
What is it called when smoke reaches the same temperature as the air in the ceiling and no longer rises, but spreads out?
Stratification
The most appropriate type of detection for a computer room is_____.
Air-sampling smoke detector.
Temperatures lower than ____ and higher than ____ are not suitable for smoke detectors.
32 and 100 degrees Fahrenheit
T/F: Smoke detectors are suitable to be used in pool rooms.
False, the corrosive nature of chlorine can cause nuisance alarms and premature failure of devices.
Concealed duct smoke detectors mounted more than ____ above the floor must be provided with a remote indicator.
10’
Which of the following is likely to create nuisance alarms for smoke detectors?
a. ) Cigar smoke
b. ) Diesel exhaust
c. ) Humidity in excess of 93%
d. ) All of the above
d.) all of the above
What types of locations are radiant energy sensing fire detectors used in?
Very flammable locations. Woodworking shops, grain-elevator areas, paint spraying areas, etc.
What kind of detector is most appropriate for an atrium?
A projected-beam type smoke detector.
The three signals that air-sampling smoke detectors put out are?
Alert, take action, and alarm.
Where area-specific smoke detectors are used for door releasing magnets, they must be mounted ____.
Both sides of the door.
Which of the following is an example of a smoke control function?
a. Door unlocking
b. Elevator recall
c. Elevator shunt trip
d. Stair pressurization
d.) Stair pressurization
Duct smokes are required when minimum air flow exceeds ____
2,000 cfm
Before testing a protected premises system connected to a master box, what operation must be accomplished?
The box must be “plugged out” to avoid an accidental alarm.
Central station service is provided only by a contract between the ____ and the subscriber.
Prime Contractor.
For central station service, the prime contractor indicates compliance by ____ the system.
Certificating or Placarding
T/F: Underwriters Laboratories inspects every certified system.
False.
Central station operators must re-transmit an alarm signal to the public fire dispatcher within ____.
90 Seconds
Which of the following property types would be permitted to be monitored by a proprietary supervising station?
a. ) Chain of hardware stores under one ownership
b. ) College campus under one ownership
c. ) Large manufacturing corporation with multiple plants across the country
d. ) All of the above
d.) all of the above.
The secondary power supply for a proprietary supervising station must have a minimum capacity of ____.
26 hours.
Proprietary supervising stations must retain records for not less than ____.
1 year.
What city had the first operational public emergency alarm reporting system in 1852.
Boston
The primary purpose of dwelling fire warning equipment is ___.
Life Safety
Single-station smoke alarms for dwelling use became available in the ____.
1970’s
Heat alarms or detectors installed on ceilings that consist of beams or joists must be installed ____.
On the bottoms of the beams or joists.
Areas of a dwelling over ____ square feet require additional smoke alarms or detectors.
1000.
What kind of device, when actuated and interconnected to another similar device, will cause the other device to actuate?
Multiple-Station alarms.
T/F: Single-station and multiple-station smoke alarms can be used in an office building to provide occupant warning.
False, they are only listed for household use.
Smoke alarms for DWELLINGS can be installed in ambient temperatures between ____ and ____.
40 - 100 degrees Fahrenheit
The most appropriate type of detection in dwelling garages, unfinished attics, or crawl spaces is ____
Heat detection.
Wall-mounted heats should be installed so that the top of the detector is between ____ and ____ from the ceiling.
4” - 12”
What is the maximum number of unmonitored smoke alarms that can be interconnected?
12
Smoke alarms or detectors on peaked ceilings must be within ____ of the peak.
3’
Heat detectors and alarms mounted on a ceiling must be mounted at least ____ from a wall
4”
For the purpose of life safety, detection in dwellings is required to be ____ detection
Smoke
The fire alarm signal in a dwelling sleeping room must be not less than ____ at the pillow.
75 Dba
DWELLING heat detectors must be selected to operate at a temperature not less than ____ above the maximum expected ambient temperature in the protected space.
25 Degrees Fahrenheit
Smoke alarms/detectors within ____ of ranges/stovetops must be of the photoelectric type or have a silence feature.
20’
A primary power source for smoke detector equipment in dwellings may consist of?
a. a non-rechargeable battery
b. a rechargeable battery
c. commercial light and power
d. any of the above
d.) any of the above
Who is responsible to ensure that the fire alarm system is tested properly?
The owner
What are the three types of fire alarm tests?
Acceptance, Re-acceptance, and Periodic
When testing audible and visible notification appliances, they should be actuated for how long?
Only long enough to test them.
At the time of system completion, a ___% test is required.
100%
How often must control equipment be tested?
Once a year.
How often should non-restorable, fixed temperature heat detectors be tested?
Every 15 years.
Wet sprinkler system flow switches are tested how?
By opening the inspector’s test valve.
Fire alarm equipment must be maintained according to ____
The manufacturer’s published instructions.
The site-specific software must be provided to ___ at completion of the system.
The owner or their representative.
Records of inspection and test must be retained by the service company ____.
Until the next test and one year after.
The owner must retain the record of inspection and test for ___
The life of the system.
In most cases, a short between conductors on an IDC will result in ____
An alarm signal.
What can cause a ground fault?
Conduit burrs, Improper insulation types, wet conduit
Improperly connected ground shields can result in ____
Erratic operation
Removal of a device on an SLC circuit will give a ____ signal.
Trouble
While always discouraged, the only type of circuits that T-tapping is allowed on is ____
Class B SLC
Waterflow switches and valve supervisory switches should be tested ___ times a year.
2
Manual fire alarm boxes (pull stations) should be tested once every _____.
Year
Wall mounted horn strobes in sleeping rooms of dwellings must be ____ cd if mounted above 24” from the ceiling, if below 24” from the ceiling, the device is set at ____ cd.
177 cd, 110 cd
