Fujitsu M10 Series Installation Planning Manual page 118

CHAPTER 8 Security Actions
b) Fixed fire extinguishing equipment
Fixed fire extinguishing equipment includes sprinklers and carbon dioxide fire
extinguishing equipment.
A sprinkler, normally tripped on detecting heat, is not suitable for extinguishing fires
in their early stages, but can be useful as a last resort for putting out fires. A preaction
sprinkler is recommended, because a sprinkler that is constantly filled with water is
liable to spray water accidentally upon contact. In a computer room furnished with
sprinklers, piping is needed to drain any water that is sprayed.
A pushbutton switch should be installed near the computer room access door to allow
operators to turn off the server system and air conditioner before the sprinklers are
tripped.
Fixed carbon dioxide fire extinguishing equipment is superior in that it does not cause
the contamination associated with other fire extinguishing agents, but their use should
be accompanied by other safety provisions, such as creating an escape passage and
issuing escape alarms, to ensure the safe escape of the occupants of the room.
(4) Escape facilities
The fire escape facilities that need to be maintained are listed below. Daily escape
drills are important, including practice in handling of the escape equipment.
a) Escape facilities
If the computer room is located in the basement or on any floor between the second
and the tenth floor of the building, one of the following escape facilities should be
selected and maintained:
 Basement
Escape ladder, escape staircase
 Floors between the second and the tenth floor
Slide, escape ladder, lift, escape bridge, escape chute
The installation of these facilities is also recommended on floors higher than the tenth
or provide an escape to the rooftop, to a lower floor, or to an adjoining building, etc.
b) Escape passage
A computer room with devices installed in an intricate layout can be a maze which
requires extra time to find a way out of the room or which can cause injuries due to
hitting devices in the course of escape. An escape passage at least 1.5 m (4.9 ft) wide
should be available to expedite escape. Escape or passage guide lights should be
located where they are visible from anywhere in the room.
100 C120-H007-08EN