EXA E&C’s C/R Design Business Division devotes itself to improving product performance and construction method to play a leading role in 21C new construction culture.
The major construction and development fields are CLEAN-ROOM construction, SGP partition, DRY
WALL, light-weight roof, floor construction, and access floor.
CEILING
1. Metal (Al, St'l) Ceiling
2. System Ceiling
METAL
1. F.C.U Cover
2. Column Cover
3. Panel
3. C/R overview
For clean room manufacturing
and design, EXA produces industrial clean rooms
and bio clean rooms as well as providing general
design and construction services. The market in
Korea is estimated by EXA to be KRW 200 billion
in 2007 and KRW 220 billion in 2008. We hold
approximately 15% of this market, and our
strategy is to continue to develop our diverse
network of industry partners such as Samsung
Construction, ENG and Heavy Industries; Doosan;
Daelim; and Dongbu as well as our primary
partner, GS Engineering & Construction
Corporation.
A cleanroom is an
environment, typically used in
manufacturing or scientific research,
that has a low level of environmental
pollutants such as dust, airborne
microbes, aerosol particles and chemical
vapors.
Mare accurately, a cleanroom has a
controlled level of contamination that
is specified by the number of particles
per cubic meter at a specified particle
size.
To give a perspective, the ambient air
outside in a typical urban environment
might contain as many as 35,000,000
particles per cubic meter, 0.5 ㎛ and
larger in diameter, corresponding to an
ISO class 9 cleanroom.
Cleanrooms can be very large. Entire
manufacturing facilities can be
contained within a cleanroom with
factory floors coverting thousands of square
meters. They are used extensively in
semiconductor manufacturing,
biotechnology, the life sciences and other
fields that are very sensitive to
environmental contamination.
The air entering a cleanroom from
outside is filtered to exclude dust, and
the air inside is constantly recirculated
through high efficiency particulate air
(HEPA) and ultra low penetration air (ULPA)
filters to remove internally generated
contaminants.
Staff enter and leave through airlocks
(sometimes including an air shower
stage), and wear protective clothing
such as hats, face masks, gloves, boots
and cover-alls.
Equipment inside the cleanroom is
designed to generate minimal air
contamination. There are even specialised
mops and buckets. Cleanroom furniture is
also designed to produce a low amount of
particles and to be easy to clean.
Common materials such as paper, pencils,
and fabrics made from natural fibers are
often excluded; however, alternatives
are available. Cleanrooms are not sterile
(i.e.,free of uncontrolled)
Some cleanrooms are kept at a positive
pressure so that if there are any leaks,
air leaks out of the chamber instead of
unfiltered air coming in.
Cleanroom HVAC systems often control the
humidity to low levels, such that extra
precautions are necessary to prevent
electrostatic discharges.
Low-level cleanrooms may only require
special shoes, ones with completely
smooth soles that do not track in dust
or dirt. Entering a cleanroom usually
requires wearing a cleanroom suit.
In cheaper cleanrooms, in which the
standards of air contamination are less
rigorous, the entrance to the cleanroom
may not have an air shower. There is an
anteroom, in which the special suits
must be put on, but then a person can
walk in directly to the room.
Some manufacturing facilities do not
use fully classified cleanrooms, but use
some cleanroom practices together to
maintain their cleanliness requirements.
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