API PUBL 4661-2007

$47.45

Exploration and Production Emission Calculator II (EPEC II) User’s Guide

Published By	Publication Date	Number of Pages
API	2007	108

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INTRODUCTION

The Exploration and Production Emission Calculator Version 2.0
(EPEC II) is a software tool that can be used to estimate emissions
for exploration and production (E&P) facilities. EPEC II
integrates user inputs, emission calculations, and data summaries
for many equipment types common to E&P facilities. The
calculation techniques and emission factors utilized by the EPEC II
software were, in most cases, established by the U.S. Environmental
Protection Agency (EPA), the American Petroleum Institute (API),
and the Gas Research Institute (GRI). Published references that
provide background information for the calculation methods used in
EPEC II are given for each equipment type in both the software and
in each section of this User's Guide. EPEC II can be used to
estimate emissions of criteria pollutants (carbon monoxide [CO],
nitrogen oxides [NO_x], sulfur oxides [SO_x],
particulate matter under 10 µm [PM₁₀], and volatile
organic compounds [VOCs]), hydrogen sulfide (H₂S),
greenhouse gases (GHGs—carbon dioxide [CO₂], methane,
and ethane), and hazardous air pollutants (HAPs), such as benzene,
toluene, ethylbenzene, xylenes, 1,3-butadiene, n-hexane,
2,2,4-trimethylpentane, formaldehyde, and acetaldehyde. The types
of equipment addressed by the EPEC II software include amine units,
cooling towers, diesel/gasoline internal combustion (IC) engines,
external combustion emission units, fixed-roof storage tanks,
flares, fugitive emissions, glycol dehydrators, loading operations,
natural gas engines, natural gas turbines, and vents. The user also
has the flexibility to include emissions from additional equipment
types, or to use alternative means to calculate emissions.