| As global warming
effects worsen, UMC hopes to fulfill its responsibility as a
corporate citizen by helping to reduce the increasing emissions
of global greenhouse gases. With a vision of sustained growth
and operation, UMC's countermeasures are listed below: |
1. Conduct inventory
and verification on greenhouse gas emissions at UMC.
2. Implement reduction plans toward major emission sources.
3. Decrease the consumption of energy and resources to indirectly
lower the emission of greenhouse gasses.
4. Enhance employees' training and education for environmental
protection within the company and raise awareness for the reduction
of greenhouse gas emission.
5. Emulate government projects and activities related to greenhouse
gas reduction.
6. Closely monitor international discussion about greenhouse
gas emissions
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| Inventory and
Verification |
| UMC completed the
inventory and verification in greenhouse gas emissions with
TSIA (Taiwan Semiconductor Industrial Association). The greenhouse
gas emission inventory system has been established and qualified
by a third party, and UMC has passed PFC emission requirements
for all its Taiwan fabs. UMC will continue to require annual
third party greenhouse gas emission inventory to ensure that
UMC completely adheres to the current status of greenhouse gas
usage. |
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| Certificate for Passing
GHGEV (Greenhouse Gas Emissions Verification) for All
UMC Taiwan Fabs in 2005 |
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| Promotion of
Energy-saving Activities |
| Energy usage not
only consumes earth's resources but also results in CO2,
which contributes to the greenhouse effect. Therefore, to reduce
the impact on the environment, UMC continually evaluates various
energy-saving techniques that can directly and effectively reduce
the energy consumption of equipment. In addition, UMC promotes
energy-saving programs in the office and public areas by providing
education to improve employees' awareness and practices in daily
energy-saving actions and greenhouse gases reduction. |
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| PFC Emission
Reduction Goal and Plan |
| Currently, UMC
has targeted PFC emission reduction by "10% in 2010 compared
to 1998 (the emission of 1998 is the MMTCE average of 1997 and
1999) levels". PFCs are Perfluorinated Compounds that are
used in semiconductor processes, including CF4, C4F6,
SF6, NF3, CHF3, C3F8,
and C4F8. Major elements of the PFC emission
reduction plan include: |
1. Use C3F8
to replace C2F6 in semiconductor thin
film process to lower the emission volume of greenhouse gases.
2. Measure the utilization rate of machines that use PFCs and
the reduction rate of the treatment equipment to master the
efficiency of machines and hence conduct improvement measures
toward inefficient machines.
3. Conduct individual usage evaluation for each machine that
uses PFCs to better understand greenhouse gas emissions for
each machine.
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| In the future,
UMC will continue researching and testing substitute gases,
and lowering the use of gases with a high potential of contributing
to the greenhouse effect by reducing the source emission. Meanwhile,
in order to lower the PFC emissions year by year, UMC plans
to install high efficiency PFC abatement systems after fully
evaluating all new models. In addition, UMC sets challenging
goals with plans to reduce other greenhouse gas emissions, save
energy, reduce material and waste, and increase recycling. |
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