User Manual

Siemens Switzerland Ltd 3
Building Technologies Division
Content
1. Introduction .................................................................................................................................................... 5
1.1.
Fire hazards in data centers ........................................................................................................................ 5
1.1.1.
Fire load ................................................................................................................................................. 5
1.1.2.
Fire risks ................................................................................................................................................. 6
1.2.
Fire protection for data centers .................................................................................................................. 6
1.2.1.
Fire protection objectives ....................................................................................................................... 7
1.2.2.
Fire protection concept .......................................................................................................................... 7
1.2.3.
Fire protection measures ........................................................................................................................ 7
1.2.3.1. Passive measures
........................................................................................................................................ 8
1.2.3.2. Active measures
......................................................................................................................................... 8
1.3.
Fire protection for critical areas in data centers ....................................................................................... 10
1.3.1.
Server rooms ........................................................................................................................ 11
1.3.2.
Emergency power supply ..................................................................................................................... 12
1.3.3.
Electrical switching rooms .................................................................................................................... 12
1.3.4.
Control rooms ...................................................................................................................................... 13
1.3.5.
Summary table ..................................................................................................................................... 13
1.4.
Purpose of this document ......................................................................................................................... 14
2.
Fire detection ................................................................................................................................................ 15
2.1.
Fire basics ................................................................................................................................................. 15
2.1.1.
Fire phenomena ................................................................................................................................... 15
2.1.2.
Fire propagation ................................................................................................................................... 15
2.1.3.
Deceptive phenomena ......................................................................................................................... 16
2.2.
Fire detection system ............................................................................................................................... 16
2.2.1.
Tasks .................................................................................................................................................... 16
2.2.2.
Elements .............................................................................................................................................. 17
3.
Alarming and evacuation .............................................................................................................................. 18
3.1.
Introduction ............................................................................................................................................. 18
3.2.
Alarming ................................................................................................................................................... 18
3.2.1.
Objectives ............................................................................................................................................ 18
3.2.2.
Alerting selected members of staff ....................................................................................................... 18
3.2.3.
Alerting people in the building ............................................................................................................. 19
3.2.4.
Alerting the public fire department ...................................................................................................... 19
3.2.5.
Alarm strategies ................................................................................................................................... 19
3.2.6.
Alarm Verification Concept AVC ........................................................................................................... 20
3.3.
Smoke control .......................................................................................................................................... 21
3.3.1.
Objectives ............................................................................................................................................ 21
3.3.2.
Elements .............................................................................................................................................. 21