Alcatel-Lucent 7705 SAR-A, Руководство по установке

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Site Preparation
7705 SAR-A Chassis Installation Guide 59
Installation Site Assessment
Before installing equipment at a site, the characteristics of the site should be considered to
determine whether they will adversely affect the reliability of the equipment. The following
section discusses some of the site factors to consider prior to deploying equipment.
Geographical Location
Different geographical locations carry different risk factors. For example, coastal
installations with prevailing winds from the sea may be affected by Airborne Sea Salt
Particles (ASSP), which can be carried many kilometers inland. As well, installations near
ancient seabeds that have very high levels of salt in the soil may be affected by ASSP during
windy drought conditions. Mountainous regions near coasts cause unique fog conditions.
High humidity environments often cross dew point thresholds at night.
Consider whether the installation site is in an area that has the potential to experience any of
the following seasonal influences: hurricanes, cyclones, tidal or river flooding, recent
volcanic activity, or forest fires.
Examine the local surrounding environment of the installation site for proximity to possible
sources of contaminants that may cause or accelerate corrosion, especially in the presence of
high humidity.
Possible sources of contaminants include: landfills, fertilizer manufacturing, farming,
sewage, geothermal activity, swamps or marshes, oceans, ancient seabeds, power generation,
automotive and diesel combustion, fossil fuel processing, cement plants, construction sites,
steel blast furnaces, steel electric furnaces, coke plants, pulp manufacturing, chlorine plants,
rubber manufacturing, paint manufacturing, aluminum manufacturing, ore smelting, tobacco
smoke, and battery manufacturing.
If there is any uncertainty surrounding the concentration of various contaminants at the
installation site, then Corrosion Classification Coupons may be used to classify the severity
of the environment according to the standard ISA 71.04.