Environment Report 2014

3.5.2 Sources of Atmospheric Emissions Oil & Gas UK, with support from industry, has worked with DECC, the Environment Agency and the Scottish Environment Protection Agency this year to introduce and co-ordinate new emissions auditing requirements as part of ESOS under the Energy Efficiency Directive. The effects of the scheme will be monitored and reported in future editions of this report. are mainly generated offshore during the burning of fuel for energy. Carbon dioxide emission sources for 2013 are shown in Figure 9, with the majority generated by fixed installations. Last year, 77 per cent of CO 2 emitted was from burning gas, diesel or oil for fuel to generate heat and light for the installation, to process and export hydrocarbons, and to treat and reinject produced water. emissions is from the combustion of fuel gas; 3.4 million tonnes of gas was used for this purpose in 2013. Volumes of fuel gas used have been decreasing since 2008 (see Figure 10 overleaf), in line with decreasing production, associated gas and produced water volumes. Emissions of CO 2 , NO x , CO and SO 2 The largest single source of offshore CO 2

1

2

3

4

5

Figure 9: Sources of Carbon Dioxide Emissions Offshore on the UK Continental Shelf in 2013

1%

3%

1%

6

Gas Flaring and Venting (Fixed)

12%

22%

7

Gas Consumption (Fuel) (Fixed)

Diesel Consumption (Fuel) (Fixed)

8

Oil Consumption (Fuel) (Fixed)

Gas Flaring and Venting (Mobile)

Diesel Consumption (Fuel) (Mobile)

61%

Source: EEMS June 2014

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