CEA 4001 - Annex F Special Requirements for Life Safety Systems

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Annex F
Special Requirements for Life Safety Systems
F.1 Subdivision into zones
Installations shall be subdivided into zones, in accordance with Annex D, with a maximum of 200
sprinklers per zone.
F.2 Wet Pipe Installations
Sprinkler installations for life safety shall be of the wet pipe type and any subsidiary dry pipe or
alternate extension shall comply with 10.5.
F.3 Sprinkler type and sensitivity
Conventional, Spray or Sidewall sprinklers shall be used. The sensitivity shall be Quick response, except
that
Standard ‘A’ and Special response may be used in rooms not less than 500m² in area or not less than
5m in height.
F.4 Installation Main Control Valve Set
During servicing and maintenance of the installation alarm valves, the sprinkler installation shall be
fully operational in all aspects.
NOTE: in some countries duplicate installation control valve sets are required.
F.5 Water Supplies
The system shall have at least one superior single water supply.
NOTE: in some countries duplicate supplies are required for life safety systems.
F.6 Theatres
National requirements shall be taken into consideration.
In theatres with separated stages (i.e. where there is a safety curtain between the stage and
auditorium) the safety curtain shall be provided with a line of drenchers controlled by a quick
opening valve (e.g. a plug valve) fitted in an accessible position. The water supply for the drenchers
shall be taken upstream of any control valve set. The stage shall be protected by a water spray
installation with automatic and manual activation. Alternatively, stages with a total height no greater
than 12m may be protected by sprinklers.
All workshops, dressing rooms, scenery, storerooms and spaces below the stage shall be sprinklered.
F.7 Additional precautions for maintenance
Only one zone of a multi-zone installation shall be shut down at a time. An installation or zone shall be
shut down for the minimum time necessary for maintenance.
The partial or complete shut-down of a life safety sprinkler installation shall be avoided wherever
possible. Only the smallest part of the installation necessary shall be isolated.