DNV-RU-OU-0101

RULES FOR CLASSIFICATION
Offshoreunits
DNV-RU-OU-0101 EditionJuly2024
Offshoredrillingandsupportunits
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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2024
Anycommentsmaybesentbye-mailto[email protected]
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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,
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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
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CHANGES–CURRENT
ThisdocumentsupersedestheJuly2023editionofDNV-RU-OU-0101.
Thenumberingand/ortitleofitemscontainingchangesishighlightedinred.
ChangesJuly2024,enteringintoforce1July2024
Topic Reference Description
Cybersecureclassnotation Ch.2Sec.1[10.2] AddedCybersecure(Essential)asmandatoryrequirement
forunitsthatwillbeissuedwithanISMcertificate.
ChangesJuly2024,enteringintoforce1January2025
Topic Reference Description
Ch.1Sec.1 UpdatedandrestructuredtoalignwithstandardDNVformat.
Ch.1Sec.3Table6,
previousCh.2Sec.7
[2]
RemovedadditionalclassnotationES.
General
PreviousCh.2Sec.1
[13],
previousCh.2Sec.2
[6]
Deletedsubsectionwithsummaryoftechnicalreference
standards.
Towingandmooring Ch.2Sec.1[7.2.1],
Ch.2Sec.1[7.3],
Ch.2Sec.1[7.4]
Updatedrequirementsfortowingandmooring.
Fatiguemethodology
specification Ch.2Sec.7Table13,
Ch.2Sec.7[16.6]
UpdatedYqualifierfortheFMSclassnotationtoincludeallhull
shapes.
Containerisedmodules PreviousCh.2Sec.4
[3.3.2] Deletedsubsection.Technicalrequirementsarespecifiedin DNV-OS-C101andDNV-OS-C103.
Editorialcorrections
Inadditiontotheabovestatedchanges,editorialcorrectionsmayhavebeenmade.
Changes-current
Rulesforclassification:Offshoreunits—DNV-RU-OU-0101.EditionJuly2024 Page3
Offshoredrillingandsupportunits
DNVAS
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CONTENTS
Changes–current............................................................3
Chapter1Principlesandproceduresforclassification.... 16
Section1General...............................................................................................................16
1Objective............................................................................................................ 16
2Scope................................................................................................................. 16
3Application......................................................................................................... 16
4References......................................................................................................... 16
5Definitionsandabbreviations............................................................................ 19
5.1Definitionofverbalforms.................................................................................19
5.2Definitionofterms.......................................................................................... 19
5.3Abbreviations.................................................................................................. 24
Section2Classificationprinciples..................................................................................... 26
1General...............................................................................................................26
1.1The Society.................................................................................................... 26
2Theclassificationconcept.................................................................................. 26
2.1Introduction....................................................................................................26
2.2Mainclassandclassnotations..........................................................................26
2.3Conditionsandassumptionsinvolvingotherparties............................................. 27
2.4Interactionswithflagadministrationsandstatutoryrequirements..........................27
2.5Applicablerules...............................................................................................28
2.6Documentationandinformation........................................................................ 29
2.7Disclosureofinformation..................................................................................30
2.8Access............................................................................................................30
2.9Calibrationofequipment.................................................................................. 31
2.10Servicesuppliers........................................................................................... 31
3Appeals.............................................................................................................. 31
3.1DecisionstakenbytheSociety......................................................................... 31
4Statutorycertification........................................................................................ 31
4.1General.......................................................................................................... 31
4.2Service suppliers............................................................................................. 32
Section3Classificationscopeandnotations.....................................................................33
1Scopeofclassification....................................................................................... 33
1.1General.......................................................................................................... 33
1.2Rule parts...................................................................................................... 33
1.3Ruleparticulars...............................................................................................33
Contents
Rulesforclassification:Offshoreunits—DNV-RU-OU-0101.EditionJuly2024 Page4
Offshoredrillingandsupportunits
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2Classnotations...................................................................................................34
2.1General.......................................................................................................... 34
2.2Constructionsymbols.......................................................................................34
2.3Mainclassnotation..........................................................................................34
2.4Structuraldesignnotations...............................................................................35
2.5Servicenotations............................................................................................ 35
2.6Classnotationsrelatedtobatteryandfuelcellinstallations.................................. 36
2.7Optionalclassnotationsrelatedtospecialequipmentandsystems........................ 36
2.8Optionalclassnotationsrelatedtocoldclimateoperation.....................................38
2.9Servicerestrictions.......................................................................................... 38
2.10Compliancewithcoastalstatelegislation.......................................................... 38
2.11Descriptivenotation....................................................................................... 39
2.12Combinationofnotations................................................................................39
Section4Assignmentofclass........................................................................................... 40
1Assignmentofclass–newunits....................................................................... 40
1.1General.......................................................................................................... 40
1.2Requirementsforbuilderordesigner.................................................................40
1.3Applicablerules...............................................................................................41
1.4Planapproval..................................................................................................42
1.5Surveyduringconstruction...............................................................................42
1.6Installationofmachinery,systemsandequipment...............................................43
1.7Testingandcommissioning............................................................................... 43
2Assignmentofclass–existingunits..................................................................44
2.1General.......................................................................................................... 44
2.2Applicablerules...............................................................................................44
2.3Designapproval.............................................................................................. 44
2.4Classentrysurvey.......................................................................................... 44
3The classcertificate........................................................................................... 45
3.1General.......................................................................................................... 45
3.2Latecommissioning......................................................................................... 45
4Theregisterofvessels.......................................................................................45
4.1General.......................................................................................................... 45
Section5Retentionofclass.............................................................................................. 46
1General...............................................................................................................46
Section6Certificationofmaterials,componentsandsystems..........................................47
1General...............................................................................................................47
1.1Introduction....................................................................................................47
1.2Requirementsformanufacturer.........................................................................47
2TheSociety'sinvolvement................................................................................. 47
Contents
Rulesforclassification:Offshoreunits—DNV-RU-OU-0101.EditionJuly2024 Page5
Offshoredrillingandsupportunits
DNVAS
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