User Manual

Siemens Switzerland Ltd 22
Building Technologies Division
3.4.2. Evacuation concepts
For each data center an appropriate evacuation strategy must be defined in accordance with the physical
organization of the building, local regulations and in discussions with the local fire authorities.
Visual, sirens and alarm
horns
As soon as a visual, siren or horn is activated personnel inside the building must
evacuate, including personnel in the data room (center).
Prior to release of an extinguishing agent, visual warning strobes are used
together with audible sounders to alert and evacuate personnel from the room
prior to discharge of the extinguishing agent.
Voice evacuation People tend to fear life-threatening situations. And if many people are
threatened by a danger, fear quickly escalates to panic. The voice evacuation
system assures a programmed evacuation sequence in accordance with the
evacuation plan. Evacuation can be initiated as an automatic or manual function.
Escape routes Escape routes are indicated by specific signal using pictographic showing a
fleeing person. These signs have the task to indicate and facilitate the escape
routes. Escape route guidance are illuminated symbols arranged in short intervals
that even in case of smoke it is possible to have visibility to the next sign.
Some buildings have these signs at low level or in the floor to assist escape
should smoke obscure signs at higher levels.
Note: These signs and application may also be under country legislation.
3.4.3. Organization
A successful evacuation can only be achieved when the appropriate infrastructure and management organization
are in place and are regularly reviewed.
Up-to-date evacuation
plans
In many countries approved plans for fire alarm and evacuation measures are
required by law. These plans must detail all necessary actions to be taken during
emergencies and designate the persons responsible for the implementation of
such actions. In countries where no such legislation exists, the individual data
center manager must create his own plans. Department heads and senior staff
should consult with local authorities and the fire service to formulate the most
effective plans for the premises.
Regular fire drills Regular meetings and fire drills are essential in keeping evacuation plans up to
date and the staff fully prepared for any emergency.
Regular checks should be made to ensure:
• Escape routes are always free from blockages of any sort and that any
emergency fire exits remain unlocked (although they will generally be
supervised by an in-house alarm system for security purposes).
• Emergency lighting is well-maintained and always in perfect working
order.