Bull NovaScale 3005 Series Specifications download pdf (Page 38)

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Site Preparation Guide

Pollutants

There are three types of pollutants:

• liquids,

• solid particles,

• gases.

Damage varies according to pollutant type and interaction: corrosion, erosion, mildew,

oxidation, etc.

Solid particles are abrasive, electrostatic, and absorbent. They generally originate from:

• surface crumbling of construction materials used to fit out the Data Processing Center,

• the formation of rust inside air conditioning units and on raised floor supports,

• systems (e.g. printers, ...),

• insufficient filtering of fresh air,

• personnel.

Polluted air results in:

• clogged filters and impaired thermal dissipation,

• damaged connections (contact points) = intermittent failures,

• deterioration of magnetic media,

• premature wear and tear of components and moving parts.

Note:

The Computer Room and ancillary premises must be cleaned thoroughly at frequent intervals.

See Cleaning on page 2-11 for further details.

Gas pollution is difficult to control.The known effects of gas pollution on equipment and

hardware are corrosion and oxidation.

CAUTION:

In a standard data processing environment, gas concentration does not exceed an acceptable

level. However, if there are chemical or industrial processing factories in the vicinity, if

chemical odors are present, or if any other symptom or inherent problem is detected, the site

must be analyzed immediately.

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Bull NovaScale 3005 Series Specifications Page 38