FS20 Marine Fire Detection Control Panel
Siemens Industry, Inc. A6V10519176_enUS_b
Building Technologies Division
20 Audible Alarms
Alarm Locations and Requirements
Ten-inch bells are required to sound in the following location when any alarm
initiating device is activated:
• Alarm bells must always sound on the bridge regardless of which zone is in
alarm.
• Alarm bells must sound in the engine room, machinery spaces, and the control
room when an alarm is initiated for any of these spaces. In case the control room
is unattended at the time of alarm, bells must also be installed in the
passageways and lounge area of the licensed engineer’s quarters.
• If an alarm is not acknowledged (silenced or reset) at the control panel within two
minutes, the control panel must automatically cause the General Alarm to sound.
21 Manual Initiating Devices
Manual stations are recommended for use with automatic fire detectors. If a fire is
observed before automatic detector response, the manual activation of the station
results in the same system response as automatic detection. Manual stations should
be installed throughout the accommodation spaces, the service station, and the
control stations.
• Intelligent/Analog Manual Station HMS-M
• Conventional Manual Station MS-51/501
• Reference US Coast Guard Approval Equipment List
One (1) manual station should be located at each exit. The station should be readily
accessible in the corridors of each deck so that no part of the corridor is more than 60
feet (20 meters) between each manual station.
Flexible conduit or cable with a maximum diameter of ¾ inch and a minimum length of
18 inches from rigid connection should be used to house external wiring.
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