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Flexo Sustainable : Fall 2011
adding. The final number will represent the total green- house gases emitted into the atmosphere on a CO2e basis, preferably in metric tons. Scope 1 emiSSionS Scope 1 emissions primarily come from greenhouse gases relating to onsite combustion and mobile sources, but also include fugitive emissions from sources such as refrigerants. These emissions can come from a variety of areas of a facility — natural gas to fuel an oxidizer, propane to power a forklift, solvent combustion or a leaking refrigeration unit. Careful documentation of sources, conversion factors and amounts is extremely important to state boundaries, and be able to make comparisons over time or with other facilities. To determine Scope 1 emissions, a facility must take inventory of the potential sources and add the CO2 or CO2e from each in metric tons. A search on the Internet will yield a number of online calculators that can be used for individual sources of CO2 emissions. However, the following are emis- sion factors for potential sources in a flexo facility. Using them, calculations can be compiled in a spreadsheet. GaSoline & DieSel inDuStrial enGineS, lanDScapinG equipment The engine category addressed by this section covers a wide variety of industrial applications of both gasoline and diesel internal combustion (IC) engines, such as aerial lifts, forklifts, mobile refrigeration units, generators, pumps, indus- trial sweepers/scrubbers, material handling equipment (such as conveyors), and portable well-drilling equipment. The three primary fuels for reciprocating IC engines are gaso- line, diesel fuel oil (No.2), and natural gas. Gasoline is used primarily for mobile and portable engines. Diesel fuel oil is the most versatile fuel and is used in IC engines of all sizes. U.S. Environmental Protection Agency AP-42, 3 .3 Gasoline and Diesel Industrial Engines http://www.epa.gov/ttnchie1/ap42/ch03/final/c03s03.pdf The following emission factors for gasoline and diesel engines are based on 99 percent conversion of fuel carbon content to CO2. Source: Table 1.3 -12. U.S. Environmental Pro- tection Agency AP-42, 1 .3 Fuel Oil Combustion http://www.epa. gov/ttnchie1/ap42/ch01/final/c01s03.pdf www.flexography.org Fall 2011 Sustainable FLEXO 11
Spring Summer 2009
Year End 2011