Sprinkler Regulations - Hooksett Fire Department

HOOKSETT FIRE RESCUE
15 LEGENDS DRIVE
HOOKSETT, NEW HAMPSHIRE 03106
Phone: (603) 623-7272
Fax: (603) 626-6742
RULES AND REGULATIONS FOR
SPRINKLER AND STANDPIPE SYSTEMS
INSTALLATION OR MODIFICATIONS
I. Permits and Regulations:
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Sprinkler systems shall be installed where required by code or as
required by Hooksett Town Ordinance and Hooksett Fire
Department requirements.
Sprinkler systems shall be installed in accordance with NFPA 1,13,
13D, 13R as required and shall be connected to the building fire
alarm.
A complete set of plans shall be submitted to Hooksett Fire
Department. Plans shall be drawn to scale. Hydraulic calculations
shall also be included with the submittal package.
No work may start until Hooksett Fire Department has approved
the plans.
Prior to installation, the sprinkler contractor shall obtain a permit
from Hooksett Fire Department.
All sprinkler systems installed in the Town of Hooksett shall have a
plumbing permit issued by the Town of Hooksett.
All buildings with sprinkler and/or standpipes shall have a fire
alarm system connected to the sprinkler/standpipe system for
alarm and trouble monitoring. The fire alarm system shall be
connected directly to a UL listed central station monitoring
company in accordance with Hooksett Fire Department fire alarm
requirements.
A test certificate for above ground piping and for underground
piping must be presented to the fire prevention bureau prior to
inspection.
Prior to inspection the installer must provide certification that the
system has been 100% tested and functions in compliance with
the system specifications and NFPA requirements.
The Hooksett Fire Department shall witness all final tests
associated with the system. This is to include fire pump test and
hydrostatic testing of piping.
The fire department may impose additional requirements in order
to meet specific life safety needs.
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12.
Any deviation from the approved specifications shall be submitted
in writing to the fire prevention bureau for consideration and
approval.
II. System Requirements for NFPA 13 and 13R Systems
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A post or wall indicating valve shall be provided.
All post or wall indicating valves shall be supplied with system
tamper switches.
A test header shall be provided for all fire pumps.
If provided, fire pumps shall report to the fire alarm control panel.
Fire pump running must activate a separate supervisory signal.
All other fire pump status indicators shall report as a supervisory
signal.
All fire pumps shall report to the fire alarm control panel whenever
there is a loss of power to the pump or pump controller.
A four (4) inch storz coupling shall be supplied on each on each
fire department connection for sprinkler or standpipe systems.
The fire department connection shall be installed in a location
approved by the fire department with the base of the coupling at a
minimum height of 32 inches and a maximum of 40 inches above
finished grade.
If fire suppression control valves are located in a separate room or
concealed space, a sign shall be provided on the entrance door or
near concealed space. The lettering shall be a minimum of one (1)
inch high in a contrasting color to the background.
All valves in the sprinkler system shall have permanent tags
indicating purpose
A legend shall be placed at the main shut off valve indicating
location of the shut off valves and inspection test valve.
A legend shall be placed at the main shut-off valve indicating
location of the shut-off valves and inspectors test valve(s).
.All sprinkler risers shall have a water flow alarm device installed.
Wet systems shall have either a vane type flow switch or an alarm
valve trim type pressure switch. Dry systems shall have an alarm
valve trim type pressure switch.
Sprinkler systems shall be separated into zones. The maximum
sprinkler zone shall be one (1) floor or level of the building, unless
modified and approved by the fire prevention bureau.
a. Each sprinkler zone shall be provided with a
flow switch, inspector’s test valve, and a floor
control valve. Closing any floor control valve
shall have no effect on the remainder of the
system.
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b. The discharge from each inspector’s test valve
shall be piped to the outside of the building: the
building owner must approve the location of the
discharge. Hose connections will not be allowed.
c. All sprinkler systems shall be provided with an
inspector’s test valve.
All sprinkler risers shall have a low-pressure switch installed on
the system side of the check valve. Low pressure shall be
indicated as a trouble condition.
.All vane flow switches shall have a 0 to 60 second retard device to
be set for 45 seconds.
.All water shut-off devices shall have tamper switches installed and
connected to a fire alarm trouble circuit.
Fire alarm activation shall occur within 60 seconds of opening the
most remote inspector’s test valve.
All fire service mains shall be equipped with a backflow preventer
approved by the appropriate water department.
All sprinkler and standpipe systems shall be provided with an
external mechanical water motor gong or electric bell. There shall
be no shut-off valves on the alarm device.
Pre-action systems shall be provided with a method to allow the
manual operation of all pre-action valves.
The system drain and water motor gong drain shall be located at
least two (2) feet horizontally away from the centerline of the fire
department connection.
When a building is equipped with more than one fire department
connection, a sign shall be permanently installed at each
connection indicating the section of the building serviced by that
connection.
When determined by the fire department that the fire department
connection may be susceptible to vandalism or tampering, tamper
resistant covers shall be required.
In addition to the supply of spare sprinklers and appropriate
wrenches, materials must be provided in the sprinkler cabinet as
necessary to seal the pipe threads associated with the sprinkler
(pipe tape).
In new construction or in buildings which undergo a renovation of
more than 50% floor area or assessed value, a fire hydrant must be
provided within 75 feet of the fire department connection. The
location of said hydrant to be specifically approved by the fire
department.
Exception: This does not apply to systems installed
in accordance with NFPA 13D.
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III. Security
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All padlocks for sprinkler controls shall be a “Knox”
padlock keyed for the Hooksett Fire Department.
All buildings with a sprinkler shall have a “Knox Box” key
depository system installed. Contact Hooksett
Fire Department for details.
IV. Requirements for NFPA 13D Systems.
All 13D systems shall meet the requirements of
Section I, Permits and Regulations with the exception of Item 7,
requiring a fire alarm system connected to a central station.
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Water supply tanks shall be sized for a minimum 10-minute
discharge time.
Design discharge shall not be less than 18 gpm for one (1)
sprinkler and not less than 13 gpm per sprinkler for multi design
sprinklers. The design discharge shall not be less than the listing
of the sprinkler.
Sprinklers are required in all areas of the dwelling, including
bathrooms of any size, closets with electrical fixtures or outlets and
attached garages. Attics and other concealed spaces that are
heated and/or have future possibility for living space shall also be
sprinkle red.
Attached garages may be covered with either sidewall heads or
antifreeze solution.
Water flow in the sprinkler system shall activate all audible smoke
detector alarms in the dwelling within 15 seconds and continue to
operate the alarms until water flow stops.
Water flow in the sprinkler system shall also activate a
weatherproof horn/strobe assembly located on the outside of the
building. The horn/strobe shall be mounted in an area easily seen
from the street without obstruction from shrubs, trees, piled snow
or parked vehicles.
A permanently piped water storage tank refill shall be provided.
Refill may be by manual means only. Automatic refill with a float
shut-off is not required.
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