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WorksheetsRequirements for System Types
Total questions: 20
Worksheet time: 10mins
The NFPA 13 standard shall provide ______ for the design and installation of automatic fire sprinkler systems and exposure protection sprinkler systems.
the minimum requirements
the maximum requirements
formulaic reciprocity
CAD based drawings
The most common type of sprinkler system in use today is ______.
a wet system
a dry system
a preaction system
an antifreeze system
A wet pipe system shall be provided with a listed relief valve not less than ___ in size and set to operate at 175 psi or 10 psi in excess of the maximum system pressure.
1/4"
1/2"
3/4"
1"
The dry pipe valve and supply pipe _____ against freezing and mechanical injury.
should be protected
shall be protected
might need to be protected
should never need protection
For dry pipe systems, with the exception of some refrigerated spaces, the air supply shall have a capacity capable of restoring normal air pressure in the system within _____.
60 seconds
10 minutes
30 minutes
60 minutes
The connection pipe from the air supply to the dry pipe valve shall not be less than _____ in diameter and shall enter the sytem aove the priming water level of the dry pipe valve.
1/4 inch
1/2 inch
3/4 inch
1 inch
For deluge systems, the detection devices or systems shall be _____ supervised.
automatically
manually
automatically or manually
hydraulically
________ shall not be used in lieu of heated valve enclosures to protect the valve and supply pipe from freezing.
heat tracing
body heat
heat paint
a small gas torch
A ________ with a connection conforming to section 16.7 shall be provided on each wet pipe system utilizing metallic pipe.
priming valve
single mechanical outlet
single air vent
contoured steel pipe
Dry pipe systems are _______ than wet pipe systems and require greater attention regarding their design, installation, and maintenance.
less complicated
more complex
cheaper to install
slightly heavier
For dry pipe systems protecting dwelling unit portions of any occupancy, system size shall be such that initial water is discharged from the connection in not more than ____, starting at the normal air pressure on the system and at the time of fully opened inspection test connection.
60 seconds.
30 seconds
20 seconds
15 seconds
Dry pipe systems that are limited to a maximum volume of 500 gallons (or 750 gallons with a quick opening device) have _____ water delivery time limit.
no required
a 15 second
a 30 second
a 60 second
Unless __________, check valves shall not be used to subdivide the dry pipe systems.
given prior written authorization
requested by the manufacturer
installed in a heated enclosure
obtained from a wholesaler
In refrigerated spaces maintained below 5°F, normal system air pressure shall be permitted to be restored within ___ minutes.
15
30
45
60
A single air compressor supplying multiple dry pipe systems is _____ to restore all systems simultaneously.
required
encouraged
not expected
obligated
A ________ shall be installed in the air filling connection.
tamper switch
check valve
flexible hose of the appropriate thickness
ventilation device
Each dry pipe system shall have ______.
a flow capability of at least 3cu.ft/min
a vane type water flow alarm
CPVC adapters listed for dry system use
a dedicated air maintenance device
Removal of an electric actuator from the preaction or deluge valve that it controls shall result in an _______.
increased water flow velocity
audible and visual indication of system impairment
automatic system restart
immediate flow of water from most activated sprinklers
For single and non-interlock preaction systems, not more than ___ automatic sprinklers shall be controlled by any one preaction valve.
100
200
500
1000
If a fire protection system installed prior to 2012 still uses antifreeze in the system, you must at a minimum _______.
flush the system and replace with a listed noncombustible replacement solution
collect the solution drained from the system to use for refilling
remove the system piping and install a dry pipe valve
determine that the specific gravity of the solution is within tolerable limits
