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Description

RULES FOR CLASSIFICATION Offshoreunits DNV-RU-OU-0104

EditionJuly2021

Self-elevatingunits,includingwindturbine installationunitsandliftboats

ThecontentofthisservicedocumentisthesubjectofintellectualpropertyrightsreservedbyDNVAS(“DNV”).Theuser acceptsthatitisprohibitedbyanyoneelsebutDNVand/oritslicenseestoofferand/orperformclassification,certification and/orverificationservices,includingtheissuanceofcertificatesand/ordeclarationsofconformity,whollyorpartly,onthe basisofand/orpursuanttothisdocumentwhetherfreeofchargeorchargeable,withoutDNV’spriorwrittenconsent.DNV isnotresponsiblefortheconsequencesarisingfromanyuseofthisdocumentbyothers.

ThePDFelectronicversionofthisdocumentavailableattheDNVwebsitednv.comistheofficialversion.Ifthere areanyinconsistenciesbetweenthePDFversionandanyotheravailableversion,thePDFversionshallprevail.

DNV AS

FOREWORD DNVrulesforclassificationcontainproceduralandtechnicalrequirementsrelatedtoobtainingand retainingaclasscertificate.TherulesrepresentallrequirementsadoptedbytheSocietyasbasis forclassification.

©DNVASJuly2021

Anycommentsmaybesentbye-mailto[email protected]

Thisservicedocumenthasbeenpreparedbasedonavailableknowledge,technologyand/orinformationatthetimeofissuanceofthis document.TheuseofthisdocumentbyotherpartiesthanDNVisattheuser'ssolerisk.Unlessotherwisestatedinanapplicablecontract, orfollowingfrommandatorylaw,theliabilityofDNVAS,itsparentcompaniesandsubsidiariesaswellastheirofficers,directorsand employees(“DNV”)forprovedlossordamagearisingfromorinconnectionwithanyactoromissionofDNV,whetherincontractorintort (includingnegligence),shallbelimitedtodirectlossesandunderanycircumstancebelimitedto300,000USD.

ThisdocumentsupersedestheJuly2020editionofDNVGL-RU-OU-0104. Thenumberingand/ortitleofitemscontainingchangesishighlightedinred.

ChangesJuly2021,enteringintoforce1January2022 Topic Data-drivennotations

Loadingcomputersystem

Miscellaneouschanges

Reference

Description

Ch.2Sec.1Table5

AddedclassnotationsSmart,D-INF,DDV,andREW.

FormerCh.2Sec.1 [3.9.4], Ch.3Sec.3[20]

DeleteddescriptivenotationSmartandreplacedwith additionalclassnotationSmartforoperationsbasedondigital orenvironmentallyfriendlysolutions.

Ch.3Sec.3[21]

NewclassnotationD-INFfordatacollectioninfrastructure.

Ch.3Sec.3[22]

NewclassnotationDDVfordata-drivenverification.

Ch.3Sec.3[23]

NewclassnotationREWforremotewitnessing.

Ch.2Sec.1Table5, Ch.3Sec.3[9]

UpdateddescriptionforadditionalclassnotationLCS,and madequalifierDCoptional.

Ch.2Sec.1Table5, Ch.3Sec.3[24],

DeletedsubsectionsSpecialfeaturesnotationsandtextmoved intoseparatesubsections.Nochangeinrequirements.

Ch.3Sec.3[25], Ch.3Sec.3[26] Ch.2Sec.1[3.7.1]

DeletedclassnotationRforrestrictedservice.

FormerCh.3Sec.3

DeletedsubsectionSummaryofreferencedocumentsfor additionalclassnotations.

Ch.3Sec.3[26]

Renamed'performancestandards'to'safetyandenvironmental criticalelements-(SECE).

Operationwithclosedbus-tie

Ch.3Sec.3[3]

Newclassnotationsforclosedbus-tieoperation,withqualifiers reflectingtestingscopeandfunctionality.

Greenhousegasemission abatement

Ch.3Sec.3[27]

NewclassnotationAbatetoaddressgreenhousegasemission reductionmeasures.

Performancestandardfor protectivecoating

Ch.3Sec.3[28]

NewclassnotationCOAT-PSPCforprotectivecoatings.

RebrandingtoDNV

All

ThisdocumenthasbeenrevisedduetotherebrandingofDNV GLtoDNV.Thefollowinghavebeenupdated:thecompany name,materialandcertificatedesignations,andreferencesto otherdocumentsintheDNVportfolio.Someofthedocuments referredtomaynotyethavebeenrebranded.Ifso,pleasesee therelevantDNVGLdocument.

Editorialcorrections Inadditiontotheabovestatedchanges,editorialcorrectionsmayhavebeenmade.

Rulesforclassification:Offshoreunits—DNV-RU-OU-0104.EditionJuly2021 Self-elevatingunits,includingwindturbineinstallationunitsandliftboats

Page3

Changes-current

CHANGES–CURRENT

Changes – current............................................................ 3 Chapter1Introduction................................................... 12 Section 1 Introduction....................................................................................................... 12 1 Introduction....................................................................................................... 12 1.1 General.......................................................................................................... 12 1.2 Scope............................................................................................................ 12 1.3 Organisation................................................................................................... 12 1.4 Application......................................................................................................12 1.5 References......................................................................................................12 1.6 Definitions andabbreviations............................................................................ 13

Chapter2Principlesandproceduresforclassification.... 20 Section 1Classification principles..................................................................................... 20 1 General...............................................................................................................20 2 Scope of classification....................................................................................... 20 3 Class notations...................................................................................................21 3.1 General.......................................................................................................... 21 3.2Mainclass andstructuraldesignnotation........................................................... 21 3.3 Service notations............................................................................................ 21 3.4Classnotationsrelatedtobatteryandfuelcellinstallations.................................. 21 3.5Optionalclassnotationsrelatedtospecialequipmentandsystems........................ 22 3.6 Liftboats......................................................................................................... 23 3.7 Service restrictions.......................................................................................... 23 3.8 Descriptive notation.........................................................................................23 3.9 Combination of notations................................................................................. 24 4 Classification procedures................................................................................... 24

Chapter3Designandconstructionprovisions................ 25 Section1Designandconstructionrequirementsformainclass....................................... 25 1 General principles.............................................................................................. 25 1.1 Introduction.................................................................................................... 25 1.2 Scope............................................................................................................ 25 1.3 Technical reference documents..........................................................................25 1.4 General assumptions....................................................................................... 25 2 Area arrangements............................................................................................ 26

Rulesforclassification:Offshoreunits—DNV-RU-OU-0104.EditionJuly2021 Self-elevatingunits,includingwindturbineinstallationunitsandliftboats

Page4

Contents

CONTENTS

2.2 Divisionsand equipmentlocation...................................................................... 26 2.3 Marking and signboards................................................................................... 27 3 Materials............................................................................................................ 29 3.1 General.......................................................................................................... 29 3.2 Technical requirements.....................................................................................30 4 Structural design................................................................................................30 4.1 General.......................................................................................................... 30 4.2 Technical requirements.....................................................................................34 5Fabricationandtestingofoffshorestructures................................................... 35 5.1 General.......................................................................................................... 35 5.2 Plansand data tobe submitted........................................................................ 35 5.3  Technical requirements................................................................................... 35 6Stability andwatertight integrity.......................................................................35 6.1 General.......................................................................................................... 35 6.2 Technical requirements.....................................................................................37 7 Towing and mooring.......................................................................................... 37 7.1 General.......................................................................................................... 37 7.2 Technical requirements.....................................................................................38 8Marine,machinery andpipingsystems.............................................................. 38 8.1 General.......................................................................................................... 38 8.2 General technicalrequirements......................................................................... 41 8.3 Jacking system............................................................................................... 42 9 Electrical installations........................................................................................ 43 9.1 General.......................................................................................................... 43 9.2 Technical requirements.....................................................................................45 10Controlandtelecommunicationsystems..........................................................45 10.1 General........................................................................................................ 45 10.2 Technical requirements................................................................................... 46 11 Fire protection................................................................................................. 46 11.1 General........................................................................................................ 46 11.2 Technical requirements................................................................................... 48 Section2Supplementaryrequirementsforservicenotations........................................... 49 1 Drilling units...................................................................................................... 49 1.1 General.......................................................................................................... 49 1.2Safety principlesand arrangement.................................................................... 49 1.3 Structural design.............................................................................................49 1.4 Fire protection................................................................................................ 50 1.5 Summary of requirements................................................................................50

Rulesforclassification:Offshoreunits—DNV-RU-OU-0104.EditionJuly2021 Self-elevatingunits,includingwindturbineinstallationunitsandliftboats

Page5

Contents

2.1 General.......................................................................................................... 26

2.1 General.......................................................................................................... 51 2.2 General requirements...................................................................................... 51 2.3RequirementsforWellinterventionunit(1).................................................... 51 2.4RequirementsforWellinterventionunit(2).................................................... 52 3 Accommodation units.........................................................................................53 3.1 General.......................................................................................................... 53 3.2Safety principlesand arrangement.................................................................... 53 3.3 Structural strength.......................................................................................... 53 3.4Electrical systems andequipment......................................................................54 3.5 Offshore gangways.......................................................................................... 54 4 Crane units.........................................................................................................54 4.1 Introduction.................................................................................................... 54 4.2 Structural design.............................................................................................55 4.3 Stabilityand watertightintegrity....................................................................... 55 4.4 Crane with substructure................................................................................... 55 5 Windturbine installationunits.......................................................................... 55 5.1 Introduction.................................................................................................... 55 5.2 Structural design.............................................................................................56 5.3 Stabilityand watertightintegrity....................................................................... 56 5.4 Crane installations........................................................................................... 56 5.5 Position keeping.............................................................................................. 56 5.6 Fire protection................................................................................................ 56 6 Liftboats............................................................................................................. 56 6.1 Introduction.................................................................................................... 56 6.2 Technical requirements.....................................................................................57 Section3Supplementaryrequirementsforadditionalnotations....................................... 58 1 Introduction....................................................................................................... 58 1.1 General.......................................................................................................... 58 1.2 Technical reference documents..........................................................................58 1.3 General assumptions....................................................................................... 58 2 Enhanced systems..............................................................................................58 2.1 General.......................................................................................................... 58 2.2 Technical requirements.....................................................................................59 2.3Certificationofmaterials andcomponents.......................................................... 59 3 Dynamicpositioning systems.............................................................................59 3.1 General.......................................................................................................... 59 3.2 Technical requirements.....................................................................................61 3.3Certificationofmaterials andcomponents.......................................................... 62

Rulesforclassification:Offshoreunits—DNV-RU-OU-0104.EditionJuly2021 Self-elevatingunits,includingwindturbineinstallationunitsandliftboats

Page6

Contents

2 Well intervention units...................................................................................... 51

4.1 General.......................................................................................................... 62 4.2 Technical requirements.....................................................................................63 4.3Certificationofmaterials andcomponents.......................................................... 64 4.4 DRILL(US).................................................................................................... 64 5 Helicopter decks.................................................................................................64 5.1 General.......................................................................................................... 64 5.2 Technical requirements.....................................................................................65 5.3Certificationofmaterials andcomponents.......................................................... 65 6 Well testing facilities......................................................................................... 65 6.1 General.......................................................................................................... 65 6.2 Technical requirements.....................................................................................66 6.3Certificationofmaterials andcomponents.......................................................... 66 7 Crane installations............................................................................................. 66 7.1 General.......................................................................................................... 66 7.2 Technical requirements.....................................................................................68 7.3 Certification.................................................................................................... 69 7.4 Testing......