CEA 4001 - 3 Contract Planning and Documentation; General

24
valve.
s
staggered (sprinkler) layout
An off-set layout with the sprinklers displaced one-half pitch along the range pipe relative to the next range
or ranges.
standard (sprinkler) layout
A layout with sprinkler on adjacent range pipes forming a rectangle.
subsidiary alternate (wet and dry pipe) extension
A part of a wet installation that is selectively charged with water or air/inert gas according to ambient
temperature
conditions and which is controlled by a subsidiary dry or alternate alarm valve.
subsidiary dry extension
A part of a wet or alternate installation that is charged permanently with air or inert gas under pressure
supply pipe
A pipe connecting a water supply to a trunk main or the installation main control valve set(s); or a pipe
supplying
water to a private reservoir or storage tank.
suspended
open cell ceiling
A ceiling of regular open cell construction through which water from sprinklers can be discharged freely.
terminal
main configuration
A pipe array with only one water supply route to each range pipe.
terminal range configuration
A pipe array with only one water supply route from a distribution pipe.
trunk main
A pipe connecting two or more water supply pipes to the installation main control valve set(s).
water supply datum point
A point on the installation pipework at which the water supply pressure and flow characteristics are specified
and
measured.
zone
A sub-division of an installation with a specific flow alarm and fitted with a monitored subsidiary stop valve.
3 Contract planning and documentation
3.1 General
Sprinkler systems, extensions and modifications shall be carried out by companies using components who
and
which are approved by the insurers (see Annex I).
The information specified in 3.3 and 3.4 shall be available to the user. All drawings and information
documents
shall carry the following information:
a) the name of the user and the owner;