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Quantifying the Environmental Footprint of Semiconductor Equipment Using the Environmental Value Systems Analysis (EnV-S)
Nikhil Krishnan, UC Berkeley
Sebastien Raoux
David Dornfeld, UC Berkeley
Krishnan, N., Raoux, S., and Dornfeld, D. (2004), "Quantifying the Environmental Footprint of Semiconductor Process Equipment using the Environmental Value Systems (EnV-S) Analysis", IEEE Trans. Semiconductor Manufacturing, 17, 4, pp. 554-561.
ABSTRACT: Many environmental and health impacts from semi-
conductor processing are tied to the design of the manufacturing
equipment. Evaluating solutions to properly treat effluents from
semiconductor tools has become an increasingly important part
of supply chain management and equipment procurement deci-
sions. Accordingly, understanding the environmental footprint
associated with equipment sets is essential for both equipment
manufacturers and semiconductor manufacturers seeking to
improve their products’ environmental and financial perfor-
mance. Equipment environmental performance must be evaluated
within the context of the factory infrastructure and auxiliary
equipment sets, with appropriate allocations of impacts from
additional steps, both upstream and downstream of the wafer
processing tools (chemical precursor delivery as well as byprod-
ucts treatment). Several challenges to environmental assessments
arise from the nature of semiconductor manufacturing itself,
due to short process life cycles, complexity of processes, and the
need to track diverse inter-related impacts. Environmental value
systems analysis (EnV-S) is an analytical tool to evaluate the
environmental performance of semiconductor processing. EnV-S
develops environmental assessments through a “bottom-up”
analysis approach, assembling equipment environmental models
to describe a system. This paper presents the use of EnV-S as a
tool to quantify the environmental impact of a product or process
by creating an operational signature along multiple dimensions
of cost and environmental and health factors. The use of EnV-S
is illustrated through a case study comparing systems that abate
emissions from dielectric chemical vapor deposition processes.
SUGGESTED CITATION: Nikhil Krishnan, Sebastien Raoux, and David Dornfeld,
"Quantifying the Environmental Footprint of Semiconductor Equipment Using the Environmental Value Systems Analysis (EnV-S)"
(January 1, 2004).
Laboratory for Manufacturing and Sustainability.
Green Manufacturing Group.
Paper krishnan_04_1.
http://repositories.cdlib.org/lma/gmg/krishnan_04_1
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