Page 146 - 2018_IFC

FIRE PROTECTION AND LIFE SAFETY SYSTEMS

7. Trim valves to pressure switches in dry, preaction sprinkler systems of Section 903 shall be approved by the fire
and deluge sprinkler systems that are sealed or code official.
locked in the open position. 904.2.1 Restriction on using automatic sprinkler sys-
903.4.1 Monitoring. Alarm, supervisory and trouble sig- tem exceptions or reductions. Automatic fire-extinguish-
nals shall be distinctly different and shall be automatically ing systems shall not be considered alternatives for the
transmitted to an approved supervising station or, where purposes of exceptions or reductions allowed for auto-
approved by the fire code official, shall sound an audible matic sprinkler systems or by other requirements of this
signal at a constantly attended location. code.
Exceptions: 904.2.2 Commercial hood and duct systems. Each
required commercial kitchen exhaust hood and duct sys-
1. Underground key or hub valves in roadway boxes
provided by the municipality or public utility are tem required by Section 607 to have a Type I hood shall be
not required to be monitored. protected with an approved automatic fire-extinguishing
system installed in accordance with this code.
2. Backflow prevention device test valves located in 904.3 Installation. Automatic fire-extinguishing systems
limited area sprinkler system supply piping shall shall be installed in accordance with this section.
be locked in the open position. In occupancies
required to be equipped with a fire alarm system, 904.3.1 Electrical wiring. Electrical wiring shall be in
the backflow preventer valves shall be electri- accordance with NFPA 70.
cally supervised by a tamper switch installed in 904.3.2 Actuation. Automatic fire-extinguishing systems
accordance with NFPA 72 and separately annun- shall be automatically actuated and provided with a man-
ciated. ual means of actuation in accordance with Section
903.4.2 Alarms. An approved audible device, located on 904.12.1. Where more than one hazard could be simulta-
the exterior of the building in an approved location, shall neously involved in fire due to their proximity, all hazards
be connected to each automatic sprinkler system. Such shall be protected by a single system designed to protect
sprinkler waterflow alarm devices shall be activated by all hazards that could become involved.
water flow equivalent to the flow of a single sprinkler of Exception: Multiple systems shall be permitted to be
the smallest orifice size installed in the system. Where a installed if they are designed to operate simultaneously.
fire alarm system is installed, actuation of the automatic 904.3.3 System interlocking. Automatic equipment inter-
sprinkler system shall actuate the building fire alarm sys-
locks with fuel shutoffs, ventilation controls, door closers,
tem. window shutters, conveyor openings, smoke and heat
903.4.3 Floor control valves. Approved supervised indi- vents and other features necessary for proper operation of
cating control valves shall be provided at the point of con- the fire-extinguishing system shall be provided as required
nection to the riser on each floor in high-rise buildings. by the design and installation standard utilized for the haz-
ard.
903.5 Testing and maintenance. Sprinkler systems shall be
tested and maintained in accordance with Section 901. 904.3.4 Alarms and warning signs. Where alarms are
required to indicate the operation of automatic fire-extin-
903.6 Where required in existing buildings and structures.
An automatic sprinkler system shall be provided in existing guishing systems, distinctive audible, visible alarms and
buildings and structures where required in Chapter 11. warning signs shall be provided to warn of pending agent
discharge. Where exposure to automatic-extinguishing
agents poses a hazard to persons and a delay is required to
SECTION 904 ensure the evacuation of occupants before agent discharge,
ALTERNATIVE AUTOMATIC a separate warning signal shall be provided to alert occu-
FIRE-EXTINGUISHING SYSTEMS pants once agent discharge has begun. Audible signals
shall be in accordance with Section 907.5.2.
904.1 General. Automatic fire-extinguishing systems, other
904.3.5 Monitoring. Where a building fire alarm system
than automatic sprinkler systems, shall be designed, installed,
inspected, tested and maintained in accordance with the pro- is installed, automatic fire-extinguishing systems shall be
visions of this section and the applicable referenced stan- monitored by the building fire alarm system in accordance
dards. with NFPA 72.
904.4 Inspection and testing. Automatic fire-extinguishing
904.1.1 Certification of service personnel for fire-extin- systems shall be inspected and tested in accordance with the
guishing equipment. Service personnel providing or con- provisions of this section prior to acceptance.
ducting maintenance on automatic fire-extinguishing
systems, other than automatic sprinkler systems, shall pos- 904.4.1 Inspection. Prior to conducting final acceptance
sess a valid certificate issued by an approved governmen- tests, all of the following items shall be inspected:
tal agency, or other approved organization for the type of 1. Hazard specification for consistency with design
system and work performed. hazard.
904.2 Where permitted. Automatic fire-extinguishing sys- 2. Type, location and spacing of automatic- and man-
tems installed as an alternative to the required automatic ual-initiating devices.

2018 INTERNATIONAL FIRE CODE ® 113
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