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RN07: REGIONAL GUIDANCE DOCUMENT FOR OPERATIONAL EMISSIONS AND DISCHARGES FROM OFFSHORE OIL AND GAS ACTIVITIES IN THE BARENTS SEA INCLUDING ASSOCIATED SHIPPING // Environmental design and performance guidanceBallast water, storm water, bilge water and otherwater contaminated with oil during productionoperations• Oil content shall be measured once a dayin the period of discharge. This may bedone by using an auto sampler, taking outsamples in order to make a representativedaily average sample (see above).Reporting• Daily registration of the amount ofproduced water reinjected or dischargedto the sea, of the content of oil inproduced water, and total amount of oilin produced water discharged to sea.• Daily registration of oil in ballast, storm,bilge and other water contaminated withoil during production operations, amountof water and amount of oil in water.• Daily registration of consumptionof added chemicals.• Consumption and discharge of drillingchemicals shall be registered pr well section• Production data for oil production, producedwater, produced gas, gas to fuel, gas to flareand diesel consumption shall be daily registeredthrough the normal production data system.• Monthly internal reporting of productiondata, chemical consumption and discharge,oil in water, including discharges• Yearly report of all discharge to sea, includingchemical consumption and discharge.6.2.5. Decommissioning/post decommissioningphaseDischarges related to cleaning duringdecommissioning:• Process equipment, vessels, tanks and pipesshall preferably be drained and cleanedprior to removal for end disposal.• Waste water shall to the extent possiblebe contained and any oily dischargeshall not exceed 30 mg/l.• Pipelines decommissioned for potentialfuture reuse shall be cleaned of hydrocarbonsand inhibited to limit corrosion.• Pipelines disposed of in situ shall be subjectto risk assessment / assessment as to identifythe best environmental option with regards tocleaning (pigging, flushing, chemical use).6.3. Emissions and discharges from associatedshippingThis section applies to ships and offshore unitsas regulated under MARPOL 73/78, engaged inactivities related to the offshore oil and gas industryin the Barents Sea.Requirements/recommendations are stated below.6.3.1. Emissions to air1. Emissions to air shall be in compliance withthe provisions of MARPOL 73/78 Annex VI,and in addition according to the followingrequirements [2.1.2 – 2.1.3].2. Marine fuels should be of marine distillatetype, with characteristics equal to the DM (X,A, Z, B) qualities under ISO8217:2010(E) orRussian GOST 305-82 “Diesel fuel. Technicalspecifications” or similar. Maximum sulphurcontent in fuels shall be 0.5 % by weight.3. Shuttle tankers shall be equipped to minimizeemissions of methane and VOC. Generalexamples on VOC emission reduction measuresare given in section 6.1.2 of this guidancedocument.6.3.2. Discharges to sea1. Discharges to sea shall be in compliance withthe provisions of MARPOL 73/78 Annex I-Vand other applicable IMO instruments as set outin, but not limited to, the requirements 2.2.2– 2.2.4 of this standard, and in addition thefollowing requirements 2.2.5 – 2.2.9.2. Pollution from anti-fouling compounds shall bein compliance with the provisions of the IMOAnti-fouling System (AFS) Convention.3. Ballast water discharge and management shallbe in compliance with the provisions of the IMOBallast Water Management Convention.4. Any discharge of oil or oily mixtures fromthe cargo areas of an oil tanker, as defined inMARPOL 73/78 Annex I, shall be prohibited.246RUSSIAN–NORWEGIAN COOPERATION PROJECT
RN07 // Environmental design and performance guidanceBarents 20205. The leakage of lubricants from stern tubebearings, seals and main propulsion componentslocated outside the hull shall be minimized.Stern tube bearing lubrication systems shouldutilize oil causing the lowest possible damage tothe environment, preferably the use of sea-waterbased lubricating systems should be applied.6. The discharge of garbage shall be prohibited,except from food waste that can be dischargedsubject to the discharge provisions of MARPOL73/78 Annex V. Such discharge shall be made asfar as practicable from nearest ice.7. No tank residues, including tank washingresidues, shall be discharged to sea fromoffshore supply and service vessels.8. Vessels shall be provided with sufficientadditional storage capacity or treatment systemsfor waste to account for any of the no-dischargeprovisions and potentially limited local wastereception capacity.6.3.3. Disturbance of marine life1. When performing voyage planning, the potentialnegative impacts on marine mammals, such ascollisions and disturbance, shall be taken intoconsideration.2. When performing planning of seismic surveyactivities, potential negative impacts on marinelife shall be taken into considerationFor identification of environmentally sensitive areascf. baseline surveys described in section 6.5.6.4. Waste managementRemoteness and poorly developed infrastructurefor waste reception and handling is a realwaste management challenge of the Barents Sea(offshore and coastal areas). The aim is to ensureproper environmental performance through alife cycle approach. Guidance documents existon an international and national level but needto be adjusted and harmonized to the relevantinfrastructure and remoteness in the Barents region.The general principle for waste management isaligned to the waste hierarchy described by numerousregulatory bodies and international organizations.This hierarchy is based on remove (preventgeneration of waste), reduce, re-use, recycle, recover,treat, dispose (cf. figure 2). To enable this approachdesign of the facilities, processes and equipment mustbe considered to eliminate and reduce generation ofwaste. Further on the facilities and logistic activitiesmust be designed to allow for segregation of waste atsource, and to keep segregated waste separated. Thiswill enable safe handling of the waste. It will alsoenable re-use, recycling, treatment and final disposalof the waste.Figure 2. Waste hierarchy (Source: OGP, 2009)Report no 2012-0690 247
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Barents 2020Barents 2020Assessment
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Barents 2020CONCLUSIVE SUMMARYThe B
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RN05: WORKING ENVIRONMENT - BARENTS
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