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Sivu: 1Sivu: 2Sivu: 3Sivu: 4Sivu: 5Sivu: 6Sivu: 7Sivu: 8Sivu: 9Sivu: 10Sivu: 11Sivu: 12Corporate responsibility Key FiGUres actual emission amounts from energy production 2010 100% 80% 60% 40% 20% 0% 47,900 t 17,500 t 7.1 million t 3,900 t 59,500 t 127,200 t 33.6 million t 31,300 t sulphur dioxide nitrogen oxide Carbon dioxide particulate matter reduced annual emissions owing to the use of natural gas all Gasum offices have a videoconferencing system which is used actively for internal and external meetings. the system has helped to considerably avoid Gasum employees’ travel between offices. reduced travel promotes safety and cuts down fuel consumption and environmental emissions. OTHER RELEVANT INDIRECT GREENHOUSE GAS EMISSIONS Emissions from natural gas use in the natural gas value chain the most considerable greenhouse gas emissions are caused by the use of natural gas. in 2010 a total of 4.5 billion cubic metres of natural gas was consumed in Finland. in terms of energy this is equivalent to around 10% of Finland’s total energy demand. the use of natural gas was mainly divided between industry users and energy companies generating electricity and heat for society. other use, such as household and transport usage, accounted for around 5%. NOX EMISSIONS the combustion of natural gas creates carbon dioxide, water vapour and nitrogen oxides but no sulphur dioxin 2010 the Gasum Group’s nox-specific emisides at all. thanks to its low carbon and high hydrosions totalled 79.6 tonnes and the compressor gen content, when combusted natural gas crestations’ average nox-specific emission was ates significantly less carbon dioxide emissions 92.8 mg/MJ. Reduced travel than other fossil fuels. the specific emission of nox emissions from Gasum’s gas carbon dioxide from natural gas combustion transmission and distribution take place promotes safety is 55.0 gCo2/MJ, while the figures for other at compressor and pressure reduction and cuts down fuels such as coal or peat are 94.6 gCo2/MJ stations. nox levels can be cut down by and 105.9 gCo2/MJ, respectively (statistics using compressor units that utilise lowfuel consumption Finland, Fuel Classification 2011). nox combustion technologies. our imand environmental according to calculations made by pöyry atra and Kouvola compressor stations alconsultants, in 2010 natural gas use contributed ready use low-nox gas turbines, with one emissions. to a reduction of around 17% in carbon dioxide compressor unit in use at each location, and emissions from energy production in comparison our aim for the future is to replace all of our with the levels seen with energy production facilities compressor units with low-nox ones. used before the introduction of natural gas use. TOTAL NUMBER AND VOLUME OF SIGNIFICANT SPILLS Emissions from natural gas production there were no gas leaks or other accident or exceptional situations in early 2011 Gasum commissioned aalto University for a study in Gasum’s transmission network in 2010. regarding greenhouse gas emissions from the fuel chain of natural a total of six gas leaks were registered in local natural gas distrigas imported to Finland. according to the results, 86% of the entire bution networks operated by Gasum during 2010. the most comfuel chain’s greenhouse gas emissions arise from the combustion mon reason behind these was pipe damage caused by a contractor. of natural gas at usage sites in Finland. the second-most significant once alerted, Gasum’s on-call staff arrived quickly at leak sites and phase is the transmission of natural gas from russia to Finland over managed to eliminate the leaks on average within two hours. the a distance of 3,000 km from Western siberia. the russian trans- leaks did not result in considerable supply disruptions for users. mission section accounts for almost 13% of the natural gas chain in one case of leak gas caught fire. this took place in sturenkatu, emissions, of which 2/3 are caused by compressor stations’ carbon Helsinki, on 6 May 2010. Gas that had leaked into underground cadioxide emissions and 1/3 by unplanned methane emissions related nals caught fire and manhole covers were blown off by the pressure to operations. natural gas production and processing taking place in a busy street. the incident did not, however, cause any injuries. in russia accounts for under 1% of total emissions and Gasum’s in addition to gas leaks, one other exceptional situation occurred own transmission activity in Finland for around 0.5% en20 en23 en17 Corporate responsibility report 2010 12
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