Introduction to Fire Safety Management

All such systems, including the installation, wiring,
power supplies, panelling, etc., must comply with the
requirements contained in each of the parts to BS 5839.
A variety of mechanisms are used to display the
location of detectors, alarm points, etc. These indicators
may be via the use of text display, a light emitting indicator
or any such alternative approved device. Whichever
device is used each zone should be indicated in such
a way as it provides a simple ‘at a glance’ overview of
all zones, and where fi tted addressable information for
each detection call point unit. At each panel a clear plan
indicating the zones that are covered by the particular
panel should be displayed (see Fig. 9.80).
Figure 9.79 Typical fi re alarm panel
FLAT 1
ZONE
05
BED 23
ZONE
06
DINING
ROOM
ZONE
04
Figure 9.80 Typical zone plan located adjacent to a fi re panel
Fire protection in buildings
In a large proportion of buildings a simple evacu -
ation strategy will be adopted and on the operation of
a manual call point or detection by an automatic fi re
detector, fi re alarm sounders will provide warning and
indicate the need for a full evacuation of the building.
Larger more complex buildings may well operate a
phased evacuation strategy and the evacuation signal,
as has already been discussed, may be restricted to a
single fl oor or a limited area within the building. On these
occasions other areas may be provided with an ‘alert’
warning signal.
Zones – to support the above arrangements the
building will need to be divided into a number of alarm
zones in such a way that the fi re alarm sounders refl ect
an operation of a manual call point within that area or a
detector.
In order to achieve effective zoning the following
should be considered:
➤ Boundaries of every alarm zone, with the exception of
external walls, should be fi re resisting (compartment)
➤ Any overlap between signals and alarm zones
should not result in confusion (which zone has been
alarmed)
➤ A common alarm signal must be provided into each
alarm zone for evacuation and a different signal in
all the zones for an alert signal.
The manual alarm zones may incorporate more than one
detection zone but the detection zones cannot incorporate
more than one alarm zone.
MAIN CONTROL PANEL
LOCATED HERE
STAFF
ROOM
Phase 2 Phase 1
ZONE
03
KITCHEN
BED17
BED16
BED15
BED14
BED 3
BED 4
BED 5
BED 6
ZONE
02
ZONE
01
LIVING
ROOM
BED 7
BED 8
BED 9
BED10
BED11
BED12
229