F/A 1-8 Flashcards
What are the 3 types of Fire Alarm Circuits?
SLC, NAC, and IDC.
What does NAC stand for?
Notification Appliance Circuit.
What does SLC stand for?
Signaling Line Circuit.
What does IDC stand for?
Initiating Device Circuit.
Combustible items found in a protected space are often referred to as ______?
Fuels.
According to NFPA data, structure fires occur approximately every ____ seconds in the US.
24
What mainly contributes to fire alarm system reliability?
Quality of Installation.
The first heat detector used _______ technology.
Fusible Link.
When did ADA become law?
1992
What do Supervisory Signals indicate?
An off-normal condition of a suppression system.
Door unlocking is an example of?
An emergency control function.
Codes Specify?
When and Where.
Standards Specify?
How.
Local AHJ’s can change national codes by?
Adoption.
Loss of AC power is indicated by what type of signal?
A Trouble.
What is a “Manual Fire Alarm Box” also known as?
A pull-station.
Water level switches are a _____ initiating device.
Supervisory.
What type of device directly senses flames?
Radiant Energy Sensing.
Which of the following is a supervisory signal-initiating device?
a. Manual fire alarm box
b. Room temperature switch
c. Spark/ember detector
d. Vane-type flow switch
b. Room Temperature Switch
Vane (or ‘Paddle’) type switches initiate what type of signal?
Alarm.
Ionization-type smoke detectors use ______ as a means of detecting smoke particles.
Americium 241
The most appropriate type of detection for a smoldering fire is?
A photoelectric-type smoke detector.
Ionization type smokes are ideal for detecting smoke particles of what size?
Smaller than one micron.
What type of smoke detector works best in large, open areas?
Projected-Beam type.
The difference in time between the ceiling reaching a certain temperature and the sensing element reaching the same temperature is called ______.
Thermal Lag.
‘Total Coverage’ is defined by _______ but not required by _______.
NFPA-72, Building Codes
T/F: A combustible area that is inaccessible isn’t included in ‘Total Coverage’
False. The area must be made accessible and protected by detectors.
Heat detectors should operate at least _______ above the maximum ambient room temperature.
20 Degrees.
Waterflow switches are permitted to have a time delay of up to ______.
90 Seconds
On smooth + level ceilings, smoke detectors are not permitted to exceed what spacing?
30 Feet
Supervisory Valve ID’s must be made to send a supervisory signal within _____ revolutions of the hand wheel or ______ of the valve travel distance.
2, 1/5
Supervisory Pressure Switches must send a signal when nominal pressure varies by _____.
10 psi
What type of suppression systems are Vane (Paddle) type supervisory switches used with?
Wet Pipe Sprinkler Systems.
Concealed fire detectors more than _____ from the floor must have a remote indicator.
10 Feet
NA’s used outdoors may result in _____ if not listed for such use.
Ground Faults.
The common audible appliance used with an evacuation system would be ______.
Speakers.
T/F: Speakers are an audible textual device.
True.
T/F: Audible and Visible appliances can be wired on the same circuit.
True! Unless its a speaker strobe, then the speakers will have their own circuit.
The Sound Pressure Level (SPL) is always measured using the ______ scale.
A-weighted.
When ambient sound pressure is greater than 105 dBA, _______ are required.
Visible NA’s
Audible notification appliances must be mounted _____ above the finished floor and not less than _____from the ceiling.
90”, 6”
Combination audible/visible notification appliances must be mounted so the entire lens is within _____ above the finished floor.
80-96”
A common example of private-mode signaling is in ______.
Elevator Cars.
A speaker tapped at its highest setting is likely to suffer ____.
Distortion
Visible appliances in sleeping areas must be within _____ of the pillow.
16 Feet
The maximum spacing of visible appliances used in a corridor is _____.
100 Feet
What is an example of a textual visual display?
A printer.
Strobes must be synchronized when _____.
There’s more than two in a room.
Corridor visible notification appliances must be installed a maximum of _____ from each end of the corridor.
15 Feet
T/F: Visible NA’s can be mounted on the end wall of a corridor.
True.
What NEC article covers Burglar alarms?
Article 725
Non-power-limited circuits operate up to ____ volts.
600V
Generally speaking, power-limited fire alarm circuits operate at ____
Less than 100VA
Power-limited equipment is determined to meet the limitations established by _____
The Testing Laboratory
T/F: Fire alarm cables are permitted to be laid directly on top of suspended ceiling tiles.
False
The inside of a conduit installed under a concrete slab at grade level is considered a____ location.
Wet Location.
Fire alarm circuit survivability is required for ____.
Partial Evacuation or Relocation.
Which cable type is permitted to be installed exposed in a plenum space?
a. FPLP
b. FPLR
c. NPLFP
d. NPLFR
a. FPLP
Failure to remove conduit burrs usually results in what?
Ground Faults.
When can abandoned FA cables be allowed to remain in a building?
When they’re intended for future use and labeled as such.
T/F: Fire alarm circuit conductors above a suspended ceiling may use the same support wires that support the ceiling grid.
False
T/F: Fire alarm cables are permitted to be strapped to other conduit.
False
Are firestopping materials always listed?
No
Firestop Classifications are given as ____
F-Rating, proportional to minutes.
_____ in the NEC requires penetrations to be firestopped.
300.21
A firestopping material that expands when heated is called _____.
intumescent
Combination Systems usually have ____ control unit(s).
One.
T/F: Non-fire alarm system components may share fire alarm wiring on a combination system.
True
Connection of two compatible control units is called _____ communication.
‘peer-to-peer’
Communication of FA signals over a local area network is called ____
BACNet (Building Automation Control Networks)
Suppression System Controls must be provided with a ____ to prevent accidental tripping during FA tests.
Physical Switch.
T/F: Only a common Supervisory Signal is required to be sent to the Main FA controls from the Supervisory Controls.
True
Smoke detectors installed in elevator lobbies for elevator Phase I recall must be installed within ____ of the centerline of each elevator car controlled by the detector
21 Feet.
Who selects the elevator recall level?
The AHJ
When elevator hoistways and machine rooms are sprinklered, heat detectors are required within ____ of every head.
24”
Pit sprinklers located less than _____ above the pit floor are exempt from causing shunt trip.
2 Feet.
What standard contains requirements for duct detectors?
NFPA 90A
Duct detectors are usually required on systems with a capacity over ____.
2,000 cfm
What two signals can a duct smoke give?
- ) Alarm
2. ) Supervisory (to a constantly attended location)
What class of circuit is meant to be “fail-safe”
Class D.
A high-rise is a building with ____ occupational space above the lowest fire department access.
75 Feet.
Control relays and appliances must be installed within ____ of the component they control.
3 Feet
What types of building typically have in-building fire emergency voice/alarm communications systems?
Larger Buildings, high-rises, hospitals, assembly buildings.
What is an example of a distributed recipient mass notification system (DRMNS)?
Reverse 911
Two-way in-building emergency communications systems are also called ____.
Firefighter’s telephones
Emergency communications systems must operate at standby for ____, followed by ____ of full operation.
24 Hours, 2 Hours
Backup batteries for ECS must have a safety factor of _____.
20%
Outgoing and Return conductors of a class A FA circuit should be separated by ____ vertically and ____ horizontally.
1 Foot, and 4 Foot
Fire command centers (FCC’s) are required to have a minimum fire rating of ____.
1 Hour
Systems that provide for a partial evacuation or relocation of occupants must be ____.
Survivable
For a FA system to have level 3 survivability, the building must be ____.
Fully Sprinklered
What is the fire rating of type FPLP-CI cable?
2 Hours
Firefighter telephones must be able to support simultaneous use of ___ handsets.
5
How many levels of Survivability does NFPA-72 define?
4 levels
A minimum STI of ____ is considered intelligible.
.5
Bi-Directional Amplifier systems must be installed in a ____ enclosure.
NEMA-4
What are specs for?
Adding special requirements for:
- Fire protection goals
- Types of equipment to use
- Owner requirements
In the new MasterSpec numbering system, Fire Alarm Specs are found in Division ____
28.
T/F: AHJ’s can enforce specifications.
False.
What division of specifications are ‘General Requirements”
Division 01.
Blueprints are developed using the ____ process.
Diazo
Record drawings are usually developed by who?
The contractor or equipment supplier.
Standard symbols for fire protection are found in NFPA ____.
NFPA 170
Standard ELECTRICAL symbols are found in NECA ____
100
Hidden objects on prints are usually shown as ____
Dashed Lines
Match Lines on prints are usually shown as ____
Zig-Zag Lines
The location of rated walls and barriers are usually located on ____ drawings.
Fire Protection/Life Safety
What three prints do you need to install a fire alarm system?
- ) Calculations
- ) Floor Plans
- ) Riser Diagram
What types of prints are provided to the owner at the completion of a fire alarm installation?
Record Drawings (or ‘as-builts’)
What type of drawing provide necessary info to install a Fire Alarm system.
Shop Drawings.
