Standard for Fire Safety in Rapid Transit Systems - Singapore Civil ...

2.5.6.2 Installation of the sprinkler system and its associated water
supply, control and testing requirements shall comply with SS
CP52 Code of Practice for Automatic Fire Sprinkler System
except as herein modified:
(a) Hazard groups for the sprinkler design shall be as
follows:
(i) Ordinary Hazard 1 for ancillary areas; and
(ii) Ordinary Hazard 3 for commercial spaces.
(b) Sprinkler pipes passing through the public areas and
underplatform services duct need not be enclosed
within fire rated enclosures; and
(c) Tunnel Ventilation Fan room and Smoke Control Fan
rooms which also serve as smoke plenums shall be
protected by detectors.
(d) Cut-off sprinklers are not required above exit doors
of staircases and exit passageways if the exit doors
are located in the station public areas.
(e) Magnetic (short circuit) trips are permitted for use in
motor circuits of electric motor driven pumps.
(f) The sprinkler control valves and ancillary equipment
shall be located in the fire pump / tank room.
2.5.6.3 The sprinkler system shall be electrically monitored so that on
the operation of any sprinkler head, the fire signal is
automatically transmitted to the OCC via main fire alarm panel.
2.5.6.4 Special Purpose Rooms
(a) Where a station is required to be provided with an
automatic sprinkler system under this Standard, parts of
the station which are used for purposes stipulated in
Table 2.5A shall be compartmented in accordance with
columns 3(a) and 3(b) of the table.
(b) Where a station is not required to be provided with an
automatic sprinkler system under this Standard, special
purpose rooms stipulated in Table 2.5A shall be
compartmented in accordance with columns 2(a) and
2(b).
Installation
Connection to
OCC
Special
purpose rooms
Standard for Fire Safety in Rapid Transit Systems 105