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Product Name: Drafting Tools
Product Description
Clean Draft Tool
Today’s air quality problems
will
pose particularly difficult and sometimes different challenges to EPA,
the states and tribes than
the perceived problems of past years. While our traditional air quality
program has focused on
reducing emissions from large stationary sources, fuels and new car and
truck engines, such
strategies alone are not likely to assure attainment of the nation’s air
quality and public health
goals. To meet the next generation of air quality challenges, EPA,
states and tribes must tackle
emissions from existing cars and trucks (so-called “legacy fleets”), a
wider range of engine and
vehicle types (e.g., marine vessels), and a plethora of small and
middle-size activities.
Furthermore, although new engine emissions standards promise to reduce
dramatically
(sometimes to near zero) the emissions from new cars and trucks and from
off-road vehicles and
products such as lawn mowers, boats and all-terrain vehicles; the
continued growth in travel and
the delivery of goods spurred by increasing population and personal
income will likely make it
necessary to go beyond mere technology-focused strategies to address
transportation, land use
and energy efficiency in major metropolitan areas. Moreover, although
the nation now boasts
some of the world’s cleanest products, fuels and vehicles, there remains
much we can do to
accelerate the turnover of existing fleets and to increase the
penetration of the cleanest products
by implementing demand-side strategies to a greater extent than in the
past.
Areas of Focus - Remaining Air Quality Problems and Air Quality Planning
Needs
The Committee’s consideration of potential tools was guided by input
from EPA
regarding the most significant remaining air quality problems and
regarding other types of future
air quality planning needs. We focused on several types of sources,
whose relatively un- or
under-controlled emissions contribute significantly to ozone or fine
particulate matter non-
attainment in several areas of the country. Included among those
categories so identified were
legacy vehicle and engine fleets, ports and goods movement-related
sources (e.g., trucks, ships
and rail), airports, agricultural emissions, small sources (e.g.,
bakeries, restaurants, dry cleaners),
consumer products and industrial boilers.
The Committee discussed a range of existing needs in the area of
measurement.
Measurement-related air quality planning needs for criteria pollutants
included the need for
improved baseline emissions inventory data and ambient air quality data
(e.g., due to existing
gaps in monitoring). Measurement and planning challenges for hazardous
air pollutants were
considered even more dramatic, as there is a need for data in many
areas, including information
regarding ambient levels of exposure to such pollutants, better risk
assessment data, speciation
data, improved information regarding significance levels and evaluative
data regarding the
potential impact of such pollutants on sensitive populations. Other
identified measurement
challenges included consideration of the co-benefits or impacts of
various control strategies,
including any potential local impacts associated with emissions trading.
Draft Chamber
A draft chamber is located within a clean room for sequentially immersing and processing carriers such as silicone wafers in a plurality of solution vessels provided in the draft chamber. In the draft chamber, a first air flow moves in a substantially horizontal direction from the front portion of the draft chamber toward the rear portion above the surfaces of solutions contained in chemical solution vessels which generate toxic gasses and a second air flow moves downward from the ceiling of the draft chamber. Thus, the toxic gasses generated from the chemical solution vessels are prevented from leaking into the clean room.
Company Details
Since its inception in 1979, we at Orient Giken have constantly strived to provide our valued customers with the finest custom-made semiconductor manufacturing tools possible. Today, as electronics manufacturers compete to develop faster, smaller... more
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Laboratory Tools, Manufacturing Tools, Washer Tools |
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