Corrosive Airborne Contaminants - Huawei OceanStor 2600 V3 Product Description

OceanStor 2600 V3
Product Description
Table 7-3 Air cleanliness classification by particle concentration of ISO 14664-1 and
maximum allowable concentrations (particles/m
ISO
Class
Class 1
Class 2
Class 3
Class 4
Class 5
Class 6
Class 7
Class 8
Class 9

7.4 Corrosive Airborne Contaminants

Corrosive airborne contaminants and other negative environmental factors (such as abnormal
temperature and humidity) may expose IT equipment to higher risks of corrosive failure. This
article specifies the limitation on corrosive airborne contaminants with an aim at avoiding
such risks.
Table 7-4
Table 7-4 Common corrosive airborne contaminants and their sources
Symbol
H
SO
S
HF
NO
NH
Issue 09 (2019-05-15)
Particle Particle
Size Size
≥ 0.1 μm ≥ 0.2 μm
10 2
100 24
1000 237
10,000 2370
100,000 23,700
1,000,000 237,000
- -
- -
- -
lists common corrosive airborne contaminants and their sources.
S
2
, SO
2 3
X
3
Copyright © Huawei Technologies Co., Ltd.
3
) for particles
Particle Particle
Size Size
≥ 0.3 μm ≥ 0.5 μm
- -
10 4
102 35
1020 352
10,200 3520
102,000 35,200
- 352,000
- 3,520,000
- -
Sources
Geothermal emissions, microbiological activities, fossil fuel
processing, wood rot, sewage treatment
Coal combustion, petroleum products, automobile
emissions, ore smelting, sulfuric acid manufacture
Foundries, sulfur manufacture, volcanoes
Fertilizer manufacture, aluminum manufacture, ceramics
manufacture, steel manufacture, electronics device
manufacture
Automobile emissions, fossil fuel combustion, chemical
industry
Microbiological activities, sewage, fertilizer manufacture,
geothermal emissions, refrigeration equipment
7 Environmental Requirements
Particle Particle
Size Size
≥ 1 μm ≥ 5 μm
- -
- -
8 -
83 -
832 29
8320 293
83,200 2930
832,000 29,300
8,320,000 293,000
138