Nfpa72 Flashcards
Shall a system with a positive alarm sequence be provided the means to bypass the positive alarm sequence?
Yes, it shall. 23.8 system requirements
A Dact shall be programmed to call a second DACR telephone number if unable to connect to the 1st number?
Yes it shall, 26.6 Communication methods/Transmission signals
Which signal type has the highest priority?
Fire alarm signal 10.7.2 fundamentals/signal priority
There is no limit to the number of DACT that can Communicate to a single DACR?
False, depends on the # of telephone lines 26.6 communication methods/transmission signals
What is the maximum time in seconds between initiating of an alarm at the protected premises and display at the supervising station?
90 seconds 14 inspection/testing
A single spare DACR can be used as backup to how many active DACRS?
Up to 5 DACRS 26.6.4.2.1 Equipment
Trouble signals shall restore within how many seconds?
To 200 seconds 10.14 fundamentals/trouble signals
An alarm signal shall be indicated within how many seconds of a water flow?
90 seconds 17.12 initiating devices sprinkler water flow
Duct detectors are required on the supply side for Hvac it’s rated at what CFM?
Over 2000 CFM
FPLP able can be used in riser applications?
Yes NEC ch.7 part IV chart
If you are using a 16’ extension ladder, how many feet must the 2 halves overlap when fully extended?
3ft
Required signals shall not be lost interrupted or delayed more than how many seconds as a result of primary power failure?
10 seconds 10.6.6.3 fundamentals/power supplies
The secondary power supply shall have a sufficient compacity to operate the fire alarm system under quiescent load for a minimum of how many hours? And at the end of that period shall be capable of operating all alarm notification appliances used for evacuation or to direct aid to the location and emergency for how many minutes?
Power supply should be sufficient for 24 hours. And after that notification appliances work for 5 minutes. 10.6.7 power supplies
What’s may provide power for the primary power of a fire alarm system ?
Branch circuit, electric utility, engine driven generator with trained operator on duty. 10.6.5.1 fundamentals/power supplies
The NFPA 72 States the maximum spacing for smoke detectors and absence of other engineering data is how many feet?
30ft 17.7.3.2.3.1 initiating devices /smoke sensory fire detectors
A central station is defined as what
Central supervising station
Shall a DACT seize the telephone line when it’s required to transmit a signal?
Yes 26.6 supervising station alarm systems/requirements for DACTs
What is the minimum number of telephone lines that’s DACR shall have?
2 separate incoming telephone lines 26.6.4.2.2 Supervising station alarm systems/communication methods
What is the time interval that a DACT shall transmit a signal to the DACR?
4 hour intervals. When alarm is initiate it 90 seconds. 26.6.4.1 point for supervising station alarm systems/communication methods
When testing the primary battery load for a number 6 battery it shall not exceed how many amperes per cell?
Depends on manufacture recommendations? 14.4.3.2
What methods/tests shall be performed on smoke detectors to insure that they are within the listed and marked sensitivity range?
- calibrated 2. manufactures calibrated test in an instrument 3. control unit arrangement 4. other calibrated test approved by authority
- 4.3.2 chart sensitivity Testing
Records of testing shall be retained until the next test date and how long after?
Next test and one year thereafter 14.6.2.1 maintenance inspection and testing records
Can electronic media be used for retaining inspection records?
Yes 14.6.2.1 Inspection/testing records
What class pathways are required to have a primary and redundant pathway?
Class A and X.
Upon failure of the primary power supply within how many seconds must the secondary power supply provide power to the system of a supervising station?
60 seconds 10.6.6.2 power fundamentals/power supplies
The standard fire alarm evacuation signal is how many pulses and what pattern type?
A 3 pulse temporal pattern 18.4 audible characteristics
Initiating device circuits that transmit an alarm Or supervisory signal and allow all connected devices to operate during a single open is considered as what type of circuit?
Class A and X
Shall a system with a positive alarm sequence be provided the means to bypass the positive alarm sequence ?
Yes system shall have means for bypassing 23.8.1.2 system requirements
The secondary power supply shall provide power to the protected premises within how many seconds upon failure of the primary power source?
Within 10 seconds 10.6.6.1 fundamentals/power supplies
Required signals shall not be lost or delayed for more than hope many seconds as a result of primary power failure?
10 seconds 10.6.6.3 continuity of power supplies
What is the maximum allowable voltage for NPLFA circuit?
? Nec 760.41
How far from the end of a 20ft wide corridor shall a visible notification device be?
No more then 15ft 18.5.5.5.5
What would be the minimum depth of a non-metalicraceway without concrete encasement be installed under a parking garage?
24 inches NEC back book Raceway-underground-ect.
Where would the Sequence of operation be found?
At the control panel
Heat detectors shall be selected to for maximum expected ambient ceiling temperature and shall be at least how many degrees above Max ambient?
20°F. 17.6.2.3 Initiating devices - heat sensing for detectors
What would the temperature range be of a fixed type spot heat detector with a white color code bend be?
Intermediates 175 - 249°F/ 80-121°c
17.6.2.1 initiating devices/ heat sensing for detectors
When shall smoke detector sensitivity be re calibrated after a new installation?
After one year of install 14.4.4.3 testing
If voltage is doubled and resistance is halved what is the effect on the current?
Current increases
The term shall when used in the national fire alarm code indicates what?
A mandatory requirement. definitions
What is the maximum size ground conductor for telecommunications circuit?
Shall not exceed 6 AWG NEC back book/communications grounding
What color should an insulated ground conductor size no.6 equipment grown be ?
Green? NEC 250.119 back book, conductors/grounding/identification
A manual pull station shall be mounted within how many feet of an exit doorway?
5ft. 17.14.8.4 Initiating devices
What is the range in inches that a manual pull station shall be mounted at?
42 - 48 inches off floor 17.14.5 initiating devices
Where fire detectors are installed in a concealed locations more than 10ft above the finished or in arrangements where the detectors alarm or supervisory indicator is not visible to responding personnel, the detectors shall be provided with what additional means?
With a remote alarm or supervisory indication. 17 initiating devices/general requirements
Smoke alarms shall not remain in service after how many years from the dates of manufacture, unless otherwise provided by the manufacturers published instructions?
10 years 14.4.5.4.1 testing/smoke/single multiple station devices
A lobby smoke detector shall be located on the ceiling within how many feet of the center line of each elevator lobby door within the elevator bank under control of the detector?
21feet
21.3.5 emergency control functions/elevator phase 1 recall
Can a water flow switch be permitted to initiate elevator phase one emergency recall operation?
Yes 21.3 elevator phase one emergency recall operation
Failure of any equipment that is critical to the operation of the fire alarm system or emergency control function interface devices shall be indicated at the master fire alarm control unit within how many seconds?
To 200 seconds 10.14 fundamentals/trouble signals
Can fire alarm systems be permitted to share components, equipment, circuitry, and installation wiring with non fire alarm systems?
Yes
The number of supervisory signal initiating devices permitted to be connected to a single initiating device circuit shall not exceed how many devices?
20 devices 23.5.6.2 protected promise fire alarm systems/system requirement
Are fire detectors required in spaces that are protected by an automatic fire suppression system?
Yes 23.11.7 protected promise fire alarm system /suppression system actuation
Each low power radio Transmit/trasceiver Shall automatically repeat alarm transmissions at intervals not exceeding how many seconds?
60 seconds 23.16 .3.2 protected promise fire alarm/requirements for low power radio
Riser Coaxial cables shall be rated as riser cables and routed through a rated enclosure for what amounts of hours?
2 hours
Unless configured in compliance with 10.6.4 how many independent and reliable power supplies shall be provided in a fire alarm system?
2 independent shall be supplied. One primary and 1 secondary 10.6.3.2 fundamentals/power supplies
Where shall the location of the branch circuit disconnecting means be permanently identified at?
At the control unit 10.6.5.2 circuits/disconnecting means
Is monitoring required for the neutral of a 3, 4, or 5 wire AC or DC supply source serving remotely located control equipment?
No 10.6.9.1.4 fundamentals/power supplies/monitoring integrity
Supervising station alarm systems shall be arranged to delay the transmission of primary power failure signals for how long?
60 - 180 minutes unless a delay is not permitted by AHJ 10.6.9.3
Batteries shall be installed with the month/year of installation date?
False they shall be installed manufacture date. 10.6.10 power supplies/storage batteries/marking
What are the 2 types of charging methods of batteries serving fire alarm power supplies?
Trickle charge and float charge 10.6.10.3.4 Power supplies/battery charging
The service provider shall report to the authority having jurisdiction of any system that is out of service for more than how many hours?
For more than 8 hours 10.20.4 Fundamentals/impairments
At what periodic frequency must fiber optic cable connections be inspected/tested?
Inspected Semi annual. NA for testing 14.3.1 inspection/testing
At what periodic frequency must nickel - Cadmium batteries be inspected/tested?
Inspected semi annual Tested Annually 14.4.3.2 chart inspecting testing batteries
Duct detectors must be installed in accordance with what to code books?
NFPA 72 and NFPA 90A
The number of sprinkler flow valves on a single zone shall not exceed more than what’s amount?
20
Spacing of a smoke detector in a hallway 10feet wide or less shall be how many feet?
41feet? Or = or less than 0.7 times the nominal 30ft spacing
When inspecting duct detectors list the method of inspection to be conducted
Table 14.3.1 inspection testing/inspection duct table method test through sampling tube
The off normal signal shall be initiated for a pressure tank when the required pressure increases or decreases by how many PSI?
10PSI 17.16.2.2.1 initiating devices - supervisory signal - pressure tank
The off normal signal shall be initiated for a water tank when the water levels fall or rises how many inches?
Falls 3” or rises 3” 17.16 .3.2.1 initiating devices-levels supervisory signal
The maximum light pulse duration shall be how long and with a maximum duty cycle of what percent?
Max duration 20 milliseconds Max duty cycle 40% 18.5.3.2 notification appliances - visible characteristics - light color and pulse
Lights used for fire alarm signaling only or to signal intent for complete evacuation shall be clear or nominal white and shall not exceed how many candela?
1000 cd=candela. 18.5.3.4 notification appliance - visible characteristics - light color pulse
Where low ceiling heights do not permit wall mounting at a minimum of 80 inches, wall mounted visible appliances shall be mounted within how many inches of the ceiling?
6” inches 18.5.5.2
In a corridor application, visible appliances shall be rated not less than how many candela?
15 cd 18.5.5.5.3 spacing
In a sleeping area for rooms with a linear dimension greater than 16feet the visible notification appliance shall be located within how many feet from the pillow?
16feet 18.5.5.7.3
Emergency control function interface devices shall be within how many feet of the components controlling the emergency control function?
3 feet (1m) 21.2.4
What is the minimum length of a grounding rod?
8feet. NEC 250.53 Back of book
When working under overhead power lines what is the minimum distance of clearance one must maintain?
10feet
Where multiple control units of the same manufacturer are interconnected in a network arrangement and serve the same protected Premises, the control units shall be a ranged to be reset or silenced from how many locations?
1 location 23.8.2.9 protected premises fire alarm system - system requirements. Found in back of book
The system installer shall provide evidence of their qualifications when requested by whom?
When requested by the authority having jurisdiction. Fundamentals - personal qualifications 10.5.2.5
If ceiling heights allow, and unless otherwise permitted by 18.4.8.2 through 18.4.8.5, wall mounted appliances shall have their tops above the finished floors at heights of not less than how many inches?
90 inches 18.4.8.1
Is signal receiving equipment required to indicate receipt of each signal both audibly and visually?
Yes. 27.5.2.2.5
