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SECTION 903
AUTOMATIC SPRINKLER SYSTEMS
[F]
903.4 Sprinkler system monitoring and alarms.
All valves controlling the water supply
for automatic sprinkler systems, pumps,
tanks, water levels and temperatures, critical
air pressures and water-flow switches on
all sprinkler systems shall be electrically
supervised.
Exceptions:
1.
Automatic sprinkler systems protecting
one- and two-family dwellings.
2.
Limited area systems serving fewer than
20 sprinklers.
3.
Automatic sprinkler systems installed
in accordance with NFP A 13R where a
common supply main is used to supply
both domestic water and the automatic
sprinkler systems and a separate shutoff
valve for the automatic sprinkler system
is not provided.
4.
Jockey pump control valves that are
sealed or locked in the open position.
5.
Control valves to commercial kitchen
hoods, paint spray booths or dip tanks
that are sealed or locked in the open
position.
6.
Valves controlling the fuel supply to
fire pump engines that are sealed or
locked in the open position.
7.
Trim valves to pressure switches in
dry, preaction and deluge sprinkler
systems that are sealed or locked in
the open position.
[F] 903.4.1
Signals. Alarm, supervisory and trouble
signals shall be distinctly different
and automatically transmitted to an approved
central station, remote supervising station
or proprietary supervising station as
defined in NFPA 72 or, when approved by
the fire code official, shall sound an
audible signal at a constantly attended
location.
Exceptions:
1.
Underground key or hub valves in roadway
boxes provided by the municipality or
public utility are not required to be
monitored.
2.
Backflow prevention device test valves
located in limited area sprinkler system
supply piping shall be locked in the open
position. In occupancies required to be
equipped with a fire alarm system, the
backflow preventer valves shall be electrically
supervised by a tamper switch installed
in accordance with NFP A 72 and separately
annunciated.
[F] 903.4.2
Alarms. Approved audible devices shall
be connected to every automatic sprinkler
system. Such sprinkler water-flow alarm
devices shall be activated by water flow
equivalent to the flow of a single sprinkler
of the smallest orifice size installed
in the system. Alarm devices shall be
provided on the exterior of the building
in an approved location. Where a fire
alarm system is installed, actuation of
the automatic sprinkler system shall actuate
the building fire alarm system.
[F] 903.4.3
Floor control valves. Approved supervised
indicating control valves shall be provided
at the point of connection to the riser
on each floor in high-rise buildings.
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Rights Reserved. This 2006 International Building Code® is a
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