Table 8.1 Characteristics Of Fire Extinguishing Agents - Fujitsu M10 Series Installation Planning Manual

(2) Kinds of fire extinguishing agents
Ideally, any fire extinguishing agents to be used in the computer room and the data
storage room should not contaminate the equipment or storage media, be harmless to
the human body, and be environmentally friendly.
Table 8.1

Table 8.1 Characteristics of fire extinguishing agents

Fire extinguishing agent
Carbon dioxide
Halon gas
Powder and foam
Water
(3) Fire extinguishers and fire extinguishing equipment
Fire extinguishers and fire extinguishing equipment that is installed in the computer
room and the data storage room are described below.
a) Portable fire extinguishers
Portable fire extinguishers are used to extinguish fires in their early stages. Use of
gas-based fire extinguishers or carbon dioxide fire extinguishers is recommended.
Care must be exercised, however, in using carbon dioxide fire extinguishers to avoid
oxygen deficiency or suffocation.
The number of portable carbon dioxide fire extinguishers that needs to be installed by
room size is as follows:
 Rooms measuring from 20 m
One portable carbon dioxide fire extinguisher filled with 3.2 kg (7.0 lb) of carbon
dioxide per room.
 Rooms measuring from 50 m
Two portable carbon dioxide fire extinguishers filled with 3.2 kg (7.0 lb) of carbon
dioxide per room.
 Rooms measuring over 100 m
One additional fire extinguisher for each additional 50 m
C120-H007-08EN
lists fire extinguishing agents and their characteristics.
Carbon dioxide will not contaminate devices or media but it does
require care to avoid human suffocation. Also when sprayed, it
can turn into a white mist or condense on equipment surfaces due
to its low-temperature.
Use of halon gas should be avoided, since it leads to
contamination of the ozone layer.
Use of powder and foam should be avoided, since it
contaminates equipment and mediums.
Water is not suitable for extinguishing electrical fires in their
early stages, but may be required for extinguishing larger fires.
Characteristics
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to 50 m (220 ft to 540 ft
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to 100 m (540 ft to 1080 ft
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(1080 ft )
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8.2 Details
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