Huawei OceanStor 2600 V3 Product Description page 147

OceanStor 2600 V3
Product Description
Symbol
C
CO
Cl
HCl
HBr, HI
O
C
The concentration level of corrosive airborne contaminants in a data center should meet the
requirements listed in the white paper entitled Gaseous and Particulate Contamination
Guidelines for Data Centers published in 2011 by the American Society of Heating,
Refrigerating and Air-conditioning Engineers (ASHRAE) Technical Committee (TC) 9.9.
According to the Guidelines, corrosive airborne contaminants in a data center should meet the
following requirements:
l
l
According to ANSI/ISA-71.04-1985 Environmental Conditions for Process Measurement and
Control Systems: Airborne Contaminants, the gaseous corrosivity levels are G1 (mild), G2
(moderate), G3 (harsh), and GX (severe), as described in
Table 7-5 Gaseous corrosivity levels per ANSI/ISA-71.04-1985
Severity
Level
G1 (mild)
G2 (moderate)
Issue 09 (2019-05-15)
, ClO
2 2
3
H
N N
Copper corrosion rate
Less than 300 Å/month per ANSI/ISA-71.04-1985 severity level G1.
Silver corrosion rate
Less than 200 Å/month.
NOTE
Å, or angstrom, is a unit of length. One Å is equal to 1/10,000,000,000 meter.
Copper Reactivity
Level
300 Å/month
300 Å/month to 1000
Å/month
Copyright © Huawei Technologies Co., Ltd.
Sources
Incomplete combustion (aerosol constituent), foundry
Combustion, automobile emissions, microbiological
activities, tree rot
Chlorine manufacture, aluminum manufacture, zinc
manufacture, refuse decomposition
Automobile emissions, combustion, forest fire, oceanic
processes, polymer combustion
Automobile emissions
Atmospheric photochemical processes mainly involving
nitrogen oxides and oxygenated hydrocarbons
Automobile emissions, animal waste, sewage, tree rot
Description
An environment sufficiently well-controlled
such that corrosion is not a factor in
determining equipment reliability.
An environment in which the effects of
corrosion are measurable and may be a factor
in determining equipment reliability.
7 Environmental Requirements
Table 7-5.
139