Report - DCE - Nationalt Center for Miljø og Energi

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This chapter includes fugitive emissions in the NFR sector 1B.
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According to the categorization in the reporting format for the UNECE
CLRTAP fugitive emissions is a sub-category under the main-category Energy
(Sector 1). Fugitive emissions (Sector 1B) is segmented into subcategories
covering emissions from solid fuels (1B1), oil (1B2a), natural gas
(1B2b) and from venting and flaring (1B2c). The sub-sectors relevant for the
Danish emission inventory are shortly described below according to Danish
conditions:
• 1B1c Fugitive emission from solid fuels: Emissions from solid fuels are
only relevant for the Danish national emission inventories in the case of
particulate emissions. Other components are not occurring, as these
emissions should be included in the inventory for the nation housing the
coalmines.
•
• 1B2a Fugitive emissions from oil include emissions from offshore activities
and refineries.
• 1B2b Fugitive emissions from natural gas include emissions from transmission
and distribution of natural gas. Emissions from gas storage are
included in the transmission.
• 1B2c Venting and flaring include activities onshore and offshore. Flaring
occur both offshore and onshore in gas treatment and storage plants and
in refineries. Venting occur in gas storage plants. Venting of gas is assumed
to be negligible in extraction and in refineries as controlled venting
enters the gas flare system.
Activity data, emission factors and emissions are stored in the Danish emission
database on SNAP sector categories (Selected Nomenclature for Air Pollution).
In Table 3.40 the corresponding SNAP codes and NFR sectors relevant
to fugitive emissions are shown. Further, the table holds the SNAP
names for the SNAP codes and the overall activity (e.g. oil and natural gas).