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Reduction of sulphur dioxide and hydrogen sulphideemissions was mostly contributed by the start-up of thedesulphurisation plant Sulphur Recovery Unit as the firstin a row of plants envisaged by the Capital project of Sisakand Rijeka Oil Refineries Modernisation.The Refineries Modernisation Project continues withconstruction of HDS FCC of petrol (FCC hydrodesulphurisation)which will provide for production of Euro 5 qualitypetrol, therewith adjusting the quality of fuel withthe highest standards, and which will contribute to thereduction of harmful emissions into the environment.Apart from the projects within the modernisation programme- projects that will ensure long-term processingand production in line with EU standards, the Sisak OilRefinery has launched many projects within the regularbusiness activity and maintenance, which will contributeto raising the ecological standards, among which we singleout the following: construction of the plant for processingrainfall waste waters on API KP-6 separator, reconstructionof the compressor sealing system , lightering of the blowdown system on coking plant, construction of the Sisak-2measuring station in Galdovo and automatisation of tanktruck loading stations on Dorada 2Projects on revitalisation of the storage space are alsounder way, where repair of R-300 and R-411 tanks for oilproducts is under way, with the purpose of reducing theevaporation losses, the project on installation of the newsteam generator, as well as the complete Modernisationof IT system for monitoring emissions/immissions fromthe system of the refineries.At the Rijeka Oil Refinery (Urinj location) the Study onEnvironmental Impact for the first phase of Rijeka OilRefinery modernisation was accepted, which includesthe construction of the Hydro cracking plant (MHC/HDS), Hydrogen Production Plant and DesulphurisationPlant (Claus). Obtaining the construction permits for thestipulated plants is under way.Within the regular business activity focused on raisingecological standards of production, in 2007 all sources ofnoise at the Power Plant were repaired, since they wererecognised as sources whose emissions endanger housingsettlements in the area. Moreover, noise bafflers wereinstalled on FCC complex.At the refinery, equipment for emission monitoring onstacks, in line with legal requirements, was put into func-22 Business report