Installation Environment; Dust; Corrosive Gas - Fujitsu Supercomputer PRIMEHPC FX700 Operating Manual

Chapter 3 Starting Up
3.3 Installation Environment
3.3

Installation Environment

This section describes the installation environment of the FX700 main unit.
3.3.1

Dust

■ Airborne Particles
Ensure that airborne particles in the computer room do not exceed 0.15 mg/m
designed to withstand this level of airborne particles. This is the same as the permissible level for airborne
particles in a general office and should be easily attainable in a computer room where there is little inflow of
outside air containing airborne particles of dust and tobacco smoke.
■ Eliminating Dust
Capture airborne particles of dust, etc. with the air filters in air conditioners. The computer room must be
regularly cleaned to eliminate dust on top of and underneath the floor. Be sure to clean the room in the
following cases:
- After building the computer room and before installing equipment
- When the computer room has been renovated
- When the location of the device has changed, such with the replacement of computers
3.3.2

Corrosive Gas

Corrosive gases and salty air may corrode equipment, which can lead to malfunctions and damage,
dramatically shortening the service life of the equipment. Therefore, they must be eliminated through the
installation of appropriate air cleaning equipment. Furthermore, pressurizing the room with fresh, clean air
prevents corrosive gases outside from entering. Chemical factory areas, hot springs, volcanic areas, etc.
may be sources of corrosive gas.
Hydrogen sulfide (H
Sulfur dioxide (SO
Hydrogen chloride (HCI)
Chlorine (CI
Hydrogen fluoride (HF)
Nitrogen dioxide (NO
Ammonia (NH
Ozone (O
Oil vapor
Table 3.2 Permissible Levels of Corrosive Gases
Gas Name
S)
2
)
2
)
2
)
2
)
3
)
3
Permissible Level
7.1 ppb or less
37 ppb or less
6.6 ppb or less
3.4 ppb or less
3.6 ppb or less
52 ppb or less
420 ppb or less
5 ppb or less
0.2 mg/m
24
3
. Most computers are
3
or less
C120-0089-02EN