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RECOMMENDEDPRACTICEDETNORSKEVERITASDNV-RP-F111INTERFERENCEBETWEENTRAWLGEARANDPIPELINESOCTOBER2006Sinceissuedinprint(October2006),thisbooklethasbeenamended,latestinApril2007.Seethereferenceto“AmendmentsandCorrections”onthenextpage.Commentsmaybesentbye-mailtorules@dnv.comForsubscriptionordersorinformationaboutsubscriptionterms,pleaseusedistribution@dnv.comComprehensiveinformationaboutDNVservices,researchandpublicationscanbefoundatøvik,Norway;Tel+4767579900,Fax+4767579911.©DetNorskeVeritas.Allrightsreserved.Nopartofthispublicationmaybereproducedortransmittedinanyformorbyanymeans,includingpho-tocopyingandrecording,withoutthepriorwrittenconsentofDetNorskeVeritas.ComputerTypesetting(FM+SGML)byDetNorskeVeritas.PrintedinNorwayIfanypersonsufferslossordamagewhichisprovedtohavebeencausedbyanynegligentactoromissionofDetNorskeVeritas,thenDetNorskeVeritasshallpaycompensationtosuchpersonforhisproveddirectlossordamage.However,thecompensationshallnotexceedanamountequaltotentimesthefeechargedfortheserviceinquestion,providedthatthemaximumcompen-sationshallneverexceedUSD2million.InthisprovisionDetNorskeVeritasshallmeantheFoundationDetNorskeVeritasaswellasallitssubsidiaries,directors,officers,employees,agentsandanyotheractingonbehalfofDetNorskeVeritas.FOREWORDDETNORSKEVERITAS(DNV)isanautonomousandindependentfoundationwiththeobjectivesofsafeguardinglife,prop-ertyandtheenvironment,atseaandonshore.DNVundertakesclassification,certification,andotherverificationandconsultancyservicesrelatingtoqualityofships,offshoreunitsandinstallations,andonshoreindustriesworldwide,andcarriesoutresearchinrelationtothesefunctions.DNVOffshoreCodesconsistofathreelevelhierarchyofdocuments:—OffshoreServiceSpecifications.ProvideprinciplesandproceduresofDNVclassification,certification,verificationandcon-sultancyservices.—OffshoreStandards.ProvidetechnicalprovisionsandacceptancecriteriaforgeneralusebytheoffshoreindustryaswellasthetechnicalbasisforDNVoffshoreservices.—RecommendedPractices.ProvideproventechnologyandsoundengineeringpracticeaswellasguidanceforthehigherlevelOffshoreServiceSpecificationsandOffshoreStandards.DNVOffshoreCodesareofferedwithinthefollowingareas:A)Qualification,QualityandSafetyMethodologyB)MaterialsTechnologyC)StructuresD)SystemsE)SpecialFacilitiesF)PipelinesandRisersG)AssetOperationH)MarineOperationsJ)WindTurbinesAmendmentsandCorrectionsThisdocumentisvaliduntilsupersededbyanewrevision.Minoramendmentsandcorrectionswillbepublishedinaseparatedocumentnormallyupdatedtwiceperyear(AprilandOctober).Foracompletelistingofthechanges,seethe“AmendmentsandCorrections”documentlocatedat:“OffshoreCodes”.Theelectronicweb-versionsoftheDNVOffshoreCodeswillberegularlyupdatedtoincludetheseamendmentsandcorrections.DETNORSKEVERITASRecommendedPracticeDNV-RP-F111,October2006Introduction–Page3IntroductionDNV-RP-F111isissuedasanupdatetoDNVGuidelinesNo.13Interferencebetweentrawlgearandpipelinesissuedin1997.ThisRPreplacesDNVGuidelineNo.13,whichwillbewithdrawn.—Trawlequipmenthasdevelopedsince1997,andnewtypesofequipment(i.e.clumpweights)arebeingusedintheNorthSeaandtheNorwegianSea.ThenewDNV-RP-F111includesthesechanges.—AspartofthequalificationofnewpipelinesintheNorwe-gianSea(Kristin,SnøhvitandOrmenLange),severalstudiesandmodeltestsofclumpweightinterferencewithpipelineshavebeenperformed.ResultsfromthesestudieshavealsobeenincludedinthisRP.MainchangesThemainchangesare:—Harmonisationofthedesignformatandacceptancecrite-riawithotherDNVOffshoreCodes.—Includesincreasedsizesandnewtrawlequipment(inpar-ticularclumpweightsusedintwintrawling).—Utilizationofnewknow-howfromrecentpipelineprojectsdesigningforclumpweights.AcknowledgementsThefollowingcompaniessponsoredthisJIP:—HydroASA—Statoil—DNV.Thefollowingorganisationshavemademajorcontributionstothehearingprocess:—ReinertsenEngineering—Subsea7.DNVisgratefulforthevaluableinput,includingtestresults,cooperationanddiscussionswiththesecompanies.DETNORSKEVERITASRecommendedPracticeDNV-RP-F111,October2006Page4–IntroductionDETNORSKEVERITASAmendedApril2007RecommendedPracticeDNV-RP-F111,October2006seenoteonfrontcoverPage5CONTENTS1.GENERAL..............................................................71.1Introduction.............................................................71.2Trawlingaspects......................................................71.3Scopeandapplication.............................................81.4Limitations...............................................................91.5Relationshiptootherrules......................................91.6References................................................................91.7Trawl-pipelineinteractionphases..........................91.8Units........................................................................101.9Symbolsandabbreviations...................................112.TRAWLDESIGNDATA....................................122.1Typesoftrawlgear..............................
本文标题:DNV RP F111-2006 Interference Between Trawl Gear
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