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NAIssueforBUREAUVERITASSectionExaminedwithintheGeneralConditionsofMarineBranchofBUREAUVERITASinordertocheckthecompliancewiththeapplicablerequirementsofAllparticularsnotshownonthisareassumedtobeaspertherequirementsoftheaforesaidtexts,mainlyconstructionaldetails.Shanghai,14-Aug-[ElectronicThenapprovalHULLIMO:+86-21-FAX:+86-21-158,000DWTCRUDEOILDETAILHULLWangCALCULATIONOFSEWAGEDISCHARGERATECHECKEDHuiAXuePAGES1of5Zhu NEWTIMESSHIPBUILDINGThisThisdrawingisthepropertyofNTSandmustnotbepartiallyorcopiedandusedforanyotherpurposewithoutpriorwrittenpermissionof生活污水排放速率计算书BUREAU ,referto1stNameoftheVessel: CallSignNo.:TypeoftheVessel: CrudeOilDeadweightoftheVessel: IMONumber: PORTOF Hull Revision Datefor

DWGNO.M-601-

DWGBUREAUStamped,referto1st1.Regulation11.1.1oftherevisedAnnexIVofMARPOL73/78requiresthatuntreatedsewage,whi aybedischargedatmorethan12nautical fromthenearestland,shouldnotbedischargedinstantaneouslybutatamoderateofdischargewhentheshipisenrouteandproceedingataspeednotlessthan4knots,whiletherateshouldbeapprovedbytheAdministrationbaseduponstandardsdevelopedbytheOrganization.RESOLUTIONMEPC.157(55)providesthestandardandguidancefortheapprovalandcalculationofamodera teofdischarge.Amodera teofdischargeappliestothedischargeofuntreatedsewagethathasbeenstoredinholding.Thiscalculationdoesnotorporatethedilutionofsewagewithwaterorgreywaterintocalculationsofthedischargerate.Thereforetherateisaconservativeestimateanditisrecognisedthatdischargesofsewagewillpresentahigherlevelofprotectiontothemarineenvironmentduetomixingpriortotheactualdischargeinadditiontothemixingactionoftheship’swake.2DISCHARGE umpermissibledischargerateis1/200,000(orone200,000thpart)ofsweptvolumeasfollows:DRmax=0.00926*V*D*BDrmax: umpermissibledischargerate(m3/h) refertotablebelowV:ship’saveragespeed(knots)overtheperiod refertotablebelowD:Draft(m) refertotablebelowB:Breadth BUREAU

DWGNO.M-601- ,referto1st4567895678956. umpermissibledischargeratespecifiedhereinabovereferstotheaveragerateascalculatedoverany24hourperiod,ortheperiodofdischargeifthatisless,andmaybeexceededbynomorethat20%whenmeasuredonanhourlybasis.DWGBUREAU rThecalculatedsweptvolumeoftheshipistobedeterminedfordraftsuptoand thesummerdraftassignedinaccordancewithArticle3ofInternationalConventiononLoadLines,1966.Whereashipistodischargesewagefromaholding usingapumpcalibratedatafixedrate,thepumpcaneitherbe:calibratedatatheratepermittedat4knots;calibratedforaspecificminimumship’sspeedinexcessof4Wheretheintendedactualdischargerateexceedsthatpermissibleat4knots,theactualdischargeratemayneedtobereducedorthespeed reased.TherateandspeedistobedetailedintheapprovalissuedbytheAdministration.4COMPLIANCEWITHTHEBeforeundertakingasewagedischargeinaccordancewiththisstandard,thecrewmemberresponsibleforsewageoperationsshouldensurethattheshipisenroute,ismorethan12nautical fromthenearestlandandthenavigationspeedisconsistentwiththedischargeratethathasbeenapprovedbytheAdm

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