API PUBL 4615-1995

$20.15

Emission Factors for Oil and Gas Production Operations

Published By	Publication Date	Number of Pages
API	1995	56

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Description

In 1980, the American Petroleum Institute (API) published emission factors for fugitive hydrocarbon emissions from onshore and offshore petroleum production sites. In 1993, API published the results of a joint study with the Gas Research Institute (GRI) at 20 oil and gas production sites, including light crude, heavy crude, gas production and offshore oil and gas facilities. The current report combines the 1993 API/GRI data with data from four additional gas processing plant sites. Emission factors contained in the current report replace the existing 1980 and 1993 API factors. More than 200,000 components were screened during the two recent studies using EPA Method 21 guidelines. Mass emission rates from nearly one thousand leaks were quantified. Approximately three-fourths of the quantified leaks were speciated to determine emission rates of total hydrocarbon, volatile organic compounds, and individual air toxics (Le., benzene, toluene, ethyl benzene, and xylenes).

Recently published EPA correlation equations were used in combination with the 200,000 instrument screening values to produce new average and Leak/no-leak emission factors for oil and gas production operations. The new factors allow operators to more accurately quantify actual emissions from their sites. This greatly improves assessment of control technologies and selection of equipment to lower fugitive hydrocarbon emissions. As the new leak definition imposed by the Clean Air Act of 1990 becomes effective, results of this study will be indispensable to operators.

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