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

(k) Where electrically locked doors are located in the
required means of escape path,
(i) The doors shall be unlocked:
- upon activation of the station's fire alarm
- in the event of loss of power to the lock
- upon activation of a manually operated
switch by authorized personnel manning
the Passenger Service Centre or, in the
absence of which, at the OCC,
After unlocking, the lock shall be designed to
be reactivated only at the manual control
switch, and where activated by the station's fire
alarm, after the station's fire alarm has been
reset.
Exception: Doors to equipment rooms not
forming part of the means of escape for the
public shall not be unlocked by activation of
the station's fire alarm and the manually
operated switch in PSC/OCC.
(ii) A break-glass manual release device
- shall be installed 1.2m vertically above the
floor and within 1.5m of the exit door jamb
on the egress side, and
- when operated, shall result in direct
interruption of power to the lock
independent of the control system
electronics, and
(iii) Signage with shape, dimension, colour scheme,
lettering style and lettering sizes complying with
SS 508 shall be installed
- On the egress side of doors reading
“Emergency Exit. Door will
automatically unlock in case of
fire/emergency”, and
- On the break-glass manual release
device reading “EMERGENCY DOOR
RELEASE”.
Electrically
locked doors in
means of escape
path
Standard for Fire Safety in Rapid Transit Systems 37