Huawei NetEngine80E Installation Manual page 121

HUAWEI NetEngine80E Router
Installation Guide
B.1 Environmental Requirements for an Equipment Room
This section describes the environmental requirements for equipment rooms, including site
selection, room structure, construction requirement, temperature, humidity, cleanness, erosive
gases, ESD protection, electromagnetic interference, and surge protection.
B.1.1 Requirements for Selecting a Site for an Equipment Room
When designing a project, consider the communication network planning and technical
requirements of the equipment. Also consider hydrographic, geological, seismic, power supply,
and transportation factors.
Construction, structure, heating and ventilation, power supply, lighting and fire fighting of the
equipment room should be designed by specialized construction designers to suit the
environmental requirements of routers. The equipment room should also follow local regulations
concerning the industrial construction, environmental protection, fire fighting, and civil air
defense. Construction must conform to government standards, regulations, and other
requirements.
The equipment room should be located at a place free from high temperature, dust, toxic gases,
explosive materials, or unstable voltage. Keep the equipment room away from significant
vibrations or strong noises, as well as power transformer stations.
The specific requirements for selecting a site for an equipment room are as follows:
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Issue 02 (2011-09-10)
The room should be located at a distance of at least 5 km (3.11 mi.) from heavy pollution
sources such as smelting and coal mines. It should be located at a distance of at least 3.7
km (2.30 mi.) from moderate pollution sources such as chemical, rubber, and galvanization
factories. It should be located at a distance of at least 2 km (1.24 mi.) from light pollution
sources such as packinghouses and tanyards. If these pollution sources cannot be avoided,
ensure that the equipment room is upwind of the pollution sources. In addition, adopt a
high-quality equipment room or protection products.
The room should be located away from livestock farms, or in the upwind of the livestock
farms. Do not use an old livestock room or fertilizer warehouse as the equipment room.
The air vent of the room should be far from the exhaust of city waste pipes, big cesspools
and sewage treatment tanks. The room should be in the positive pressure state to prevent
corrosive gases from entering the equipment room and corroding components and circuit
boards.
The room should be located far away from industrial and heating boilers.
It is recommended that the room be on or above the second floor. If this requirement cannot
be met, the ground for equipment installation in the room should be at least 600 mm (23.62
in,) above the maximum flood level. The room should be at an altitude lower than 3000 m
(9842.4 ft).
The room should be at least 3.7 km (2.30 mi.) away from the seaside or salt lake. Otherwise,
the equipment room should be airtight with cooling facilities. In addition, alkalized soil
cannot be used as the construction material. Otherwise, equipment suitable for wet
conditions must be used.
The equipment room should be strong enough to resist winds and downpours.
The room should be located away from dusty roads or sand. If this is unavoidable, the doors
and windows of the equipment room must not face pollution sources.
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B Environmental Requirements for Device Operation
113