UFC 4-021-01
18 DECEMBER 2002
the mass notification system must be separate from those used for fire alarm systems.
Separate visible notification appliances are not required when the mass notification
capability being provided is not required by UFC 4-010-01 and an existing public
address system in the building is being used to provide the mass notification capability.
4-2.1.6
Deactivation of the Fire Alarm Audible Notification Appliance.
4-2.1.6.1
Application. The mass notification system will provide the capability to
temporarily deactivate the building fire alarm system's audible notification appliances.
This is intended to allow the mass notification system to provide intelligible voice
commands inside an individual building without unreasonably exposing building
occupants to the risk of fire. This UFC recognizes that this requirement deviates from
the requirements of NFPA 72. This UFC authorizes this deviation from the NFPA 72
requirements for alarm signal deactivation to permit an individual building mass
notification system to deactivate the audible notification appliances of that building's fire
alarm system for the minimum time period necessary to transmit a voice message. The
NFPA 72 "5 minute" requirement before permitting the deactivation of an alarm does not
apply to this temporary deactivation by the mass notification system.
4-2.1.6.2
Required Features.
4-2.1.6.2.1 The deactivation function must be designed to function only when both the
fire alarm panel is in an alarm condition and a voice message is to be transmitted by the
mass notification system.
4-2.1.6.2.2 Only the fire alarm system audible notification appliances shall be
deactivated. All other features of the fire alarm system, including the operation of visual
notification devices and the transmission of signals to the fire department, shall remain
unaffected.
4-2.1.6.2.3 Deactivation of the fire alarm audible notification appliances must cause a
The Army requires that this supervisory
supervisory signal in the fire alarm system.
signal be separate from other fire alarm system supervisory signals, be annunciated at
the building's fire alarm control panel and any remote fire alarm annunciators, and be
transmitted to the fire department. The visual annunciation of the separate supervisory
signal shall be distinctly labeled or otherwise clearly identified.
4-2.1.6.2.4
The Army requires that a readily accessible means shall be provided
for use by emergency response forces to manually override the deactivation function
and permit the fire alarm audible notification appliances to operate independently of the
mass notification system. Use of the manual override feature must cause a supervisory
signal in the fire alarm system.
4-2.2
Giant Voice System
4-2.2.1
Application. This system can be installed as part of a one-step base-wide
4-3
Previous Page
