Dp Ops Guidance Part1

8/9/2019 Dp Ops Guidance Part1

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DPOPERATIONSGUIDANCE


PREPAREDTHROUGHTHEDYNAMICPOSITIONINGCOMMITTEE OFTHEMARINETECHNOLOGYSOCIETY

TOAIDINTHESAFEANDEFFECTIVEMANAGEMENTOFDP OPERATIONS

SEPTEMBER2012

PART1

MTS_DP_TECH_COMM_DPGUIDANCE_PART_1_Ver2-09201217.docx 1




TABLEOFREVISIONS

SectionPageNo.

OriginalText

ChangedText Remarks

Titlepage

AddedMTSDPCommitteeLogoandfooterwithrevisiondetails

1.2.6 6 SafestMode ChangedtoCriticalactivitymodeToalignwithlatestrevisionofalldocuments

1.2.7 SMO CAMO.Toalignwithlatestrevisionofalldocuments

1.2.9 SafestMode CriticalactivitymodeToalignwithlatestrevisionofalldocuments

3.1 SafestMode Criticalactivitymode Toalignwithlatestrevisionofalldocuments

4.6 SafestMode CriticalactivitymodeToalignwithlatestrevisionofalldocuments

4.8 SafestMode CriticalactivitymodeToalignwithlatestrevisionofalldocuments

4.11 10 SMO CAMOToalignwithlatestrevisionofalldocuments

5.1 12 SMO DeletedDeletedSMOfromabbreviationlist

5.1 12 n/a AddedCAMOAddedCAMOtoabbreviationlist

MTS_DP_TECH_COMM_DPGUIDANCE_PART_1_Ver2-09201217.docx2




CONTENTS

SECTION PAGE

1. PREAMBLE 4

1.1 SCOPE 5

1.2 DEFINITIONS 5

2 GENERAL 8

2.1 PHILOSOPHY 8

2.2 LAYOUT 8

3 DPRELATEDDOCUMENTATION 9

3.1 GENERAL 9

3.2 RECOMMENDEDDOCUMENTATION 9

4 THEMES 12

4.1 DPCLASS 12

4.2 DPFMEA 12

4.3 DPCAPABILITYPLOTS 14

4.4 POSITIONREFERENCESYSTEMSANDSENSORS 15

4.5 RECOMMENDEDDPCONTROLMODESFORDPACTIVITIES 16

4.6 TRIALSANDCHECKLISTS 17

4.7 DPOPERATIONSMANUALS 18

4.8 ACTIVITYOPERATIONALPLANNING 19 4.9 COMMUNICATIONS 20

4.10 DPPLANNEDMAINTENANCE 20

4.11 DPINCIDENTS 21

4.12 REPORTINGANDRECORDKEEPING 22

4.13 COMPETENCE 22

4.14 MANNING 22

5 ABBREVIATIONS 24

6 REFERENCESTANDARDS/GUIDELINES 25





1. PREAMBLE

Thisdocumenthasbeengeneratedby theMTSDPTechnicalCommitteeandhasbeenprovided to industry as a guidance document for the safe and effective conduct andmanagementofDPoperations.

This document is not meant to replace any rules, regulations or owners’ operationalmanuals. It is a compilation of existing guidance and practices gleaned from varioussources in industry. It refers to standardsand guidance usedwithin the industryanddraws attention to them. It also incorporates additional information gleaned fromexperienceanddocument/standardsnotinthepublicdomain

This is not intended to be an all encompassing document covering all aspects of DPoperations. It focuses on a number of important DP operational themes, which, ifeffectivelymanaged,willresultinsaferDPoperationsandareductioninexposuretoDP

relatedincidents.TheguidanceprovidedinthisdocumentisnotdirectedatanyparticularcategoryofDPoperationorDPvessel. Itis intendedtoapply toanyDPoperationundertakenbyanytype and class of DP vessel operating in support of offshore oil and gas activities.Examples include MODUs, ships, construction and logistics vessels where dynamicpositioningisusedfor,oraiding,stationkeeping.

LayoutoftheDocument

Thisdocumentconsistsoftwoparts. Part1containsguidanceonthemanagementofDP.Part2containsDPoperationalguidance. Part2consistsofthreeAppendices

•

Part2Appendix1–DPMODUs

•

Part2Appendix2–DPProject/constructionvessels• Part2Appendix3–DPLogisticsvessels





PART1

1.1 SCOPE

Part 1 addresses the themes that, if managed effectively, will contribute to safe andefficientDPoperations.

1.2 DEFINITIONS

1.2.1 DPSystem

TheDPsystemconsistsof componentsandsystemsactingtogethertoachievereliablepositionkeepingcapability. TheDPsystemincludesthepowersystem(powergenerationandpowermanagement),thrustersystemandDPcontrolsystem.

1.2.2 DPControlSystem

The DPcontrol system consists of all control components and systems, hardware andsoftwarenecessarytodynamicallypositionthevessel. TheDPcontrolsystemcomprisescomputer systems, sensors, displaysystems,position reference systemsand associatecablingandrouteing.

1.2.3 WorstCaseFailure

The Worst Case Failure (WCF) is the identified single failure mode in the DP systemresultinginmaximumeffectonDPcapabilityasdeterminedthroughFMEAstudy.

1.2.4 WorstCaseFailureDesignIntent

The WorstCaseFailureDesign Intent (WCFDI) is the single failure with the maximum

consequences that has been the basis of the design andoperationalconditions. Thisusuallyrelatestoanumberofthrustersandgeneratorsthatcansimultaneouslyfail.

1.2.5 RedundancyConcept

TheRedundancyConceptisthemeansbywhichtheWorstCaseFailureDesignIntentisassured.

1.2.6 CriticalActivityMode

CriticalActivityModeistheconfigurationthatthevessel’sDPsystemshouldbesetupandoperatedinsoastodelivertheintentofthevessel’sDPclassnotation. Theobjectiveisthatnosinglefailureshouldresultin exceedingtheworstcasefailure. EachDPvesselhasonlyonecriticalactivitymodewhichisuniquetothatvessel.

1.2.7 CriticalActivityModeofOperationTheCriticalActivityModeofOperation (CAMO) isgenerallya tabulatedpresentationofhow to configure the vessel’s DP system, including power generation and distribution,propulsionandpositionreferencesystems,sothattheDPsystem,asawhole,deliverstheintent of the vessel’s DP class notation. The CAMO tablealso sets out the operatoractionsshouldarequiredconfigurationnotbemet.

1.2.8 ActivitySpecificOperatingGuidelines

ActivitySpecificOperatingGuidelines(ASOG)aregenerallypresentedintabulatedformatandsetouttheoperational,environmentalandequipmentperformancelimitsconsiderednecessaryforsafeDPoperationswhilecarryingoutaspecificactivity. Thetablealsosets





outvarious levelsofoperator actionasthese limits are approachedor exceeded. TheASOGwillvarydependingontheactivityandareuniquetothatactivity.

Note: WhereDPMODUsarecarryingoutwellactivitiesthenomenclatureischangedtoWSOG(WellSpecificOperatingGuidelines).

1.2.9 TaskAppropriateMode

Task Appropriate Mode (TAM) is a risk based mode. Task Appropriate Mode is theconfigurationthatthevessel’sDPsystemmaybesetupandoperatedin,acceptingthatasinglefailurecouldresultinexceedingtheworstcasefailureandcouldresultinblackoutor loss of position. This is a choice that is consciously made. This mode may beappropriate insituations where it isdeterminedthat the risksassociated witha lossofpositionarelowand,wherethetimetoterminateislow.

Example1:- ADPMODUmayoperateinthismodeduringtimeswhenTimetoTerminateisshort,andinCriticalActivityMode,whenTimetoTerminateislong.

Example2:- ADPpipelayvesselmayoperateinthismodewhenmorethan500m fromasurfaceormissioncriticalsubseaasset,andinCriticalActivityModewheninside500m.

1.2.10 ThrusterandGeneratorOperatingStrategy(TAGOS)

Adocumentthatprovidesinformedguidance,usuallyderivedfromareviewoftheFMEAand if necessary, validation from personnel knowledgeable about vessel specificinformation, onappropriateconfigurationsofthrusters,generatorsandpowerdistribution,and associated constraints, so as to enable correct choices to be made to provideoptimumlevelofredundancy.

1.2.11 DPCapabilityPlots

DPCapabilityPlotsdefine by theoretical calculation the vessel’s capability tomaintain

positioninvariousenvironmentalconditions,(i.e.wind,seastateandcurrent)and,whereappropriate,takingaccountofcertainexternalforces,suchaspipetensionand,invariousthruster/ power configurations, including all thrusters running, loss of most effectivethrusterandfollowingworstcasefailure.

1.2.12 DPFootprintPlots

DP Footprint Plots are constructed, by observation onboard the vessel in real timeconditions. Theplotsareofthevessel’sDPstationkeepingperformanceandlimitationsinvarious environmental conditions (wind, seastate and current) and in various thruster/power configurations, includingall thrusters running, lossofmost effective thrusterandafterworstcasefailure.

Note ItisacknowledgedthatDPFootprintPlotsforDPMODUsmaybelessrelevantincomparisontoDPvesselsusedforotherapplications.

OwingtotheiralmostcontinuousworkprogramsDPMODUswillrarelyhavetheopportunitytorecordDPFootprintPlotsfordegradedthrusterconfigurations.

1.2.13 TimetoTerminate

TimetoTerminate(TTT)iscalculatedastheamountoftimerequiredinanemergencytophysicallyfreetheDPvesselfromitsoperationalactivityfollowingaDPabortstatusandallowingittobemanoeuvredclearandtoproceedtosafety.

Forexample:- IncaseofaDPdrillingvesselthismaybethetimeneededtoreleasefromthewellhead. ForaDPdivingvesselthismaybethetimeneededforthediver(s)toreturn





tothebellandmakeasealsothatthevesselcanmoveclear. TheTimetoTerminateisnotfixedforthedurationofaDPoperationbutwillvaryaccordingtothecircumstances.





2 GENERAL

2.1 PHILOSOPHY

2.1.1 Thisdocumentwascompiledwiththefollowingobjectives

• Manage,mitigateandreducetheexposureto,andpotentialof,DPrelatedincidents.

• Identifythemesthatneedtobemanaged.

• Providea listof reference documents that address themes,whilst acknowledgingthat existing referenced documents do not identify all elements adequately whenviewedinisolation.

2.1.2 Thethemesthathavebeenidentifiedandaddressedinthisdocumentare:

1. DPClass

2. FMEA/FMECA

3. DPCapability4. PositionReferenceSystemsAndSensors

5. RequiredModes

6. TrialsandChecklists

7. OperationManuals

8. ActivityandOperationalPlanning

9. Communications

10. DPPlannedMaintenance

11. DPIncidents

12. ReportingandRecordKeeping

13. Competency

14. Manning

2.2 LAYOUT

2.2.1 This document facilitates compilation of existing standards and adds to them asnecessary. Itisdemarcatedintotwodistinctsections.

1. Mainbodyofthedocument

• Objective:- toprovideoverarchingmanagementguidanceonthethemes.

2. Appendices

• Objective:- toprovideoperationalguidanceonthethemes.

2.2.2 Vesselssupportingtheoffshoreactivitieshavebeencategorizedasfollows:

• MODUs

• Project/ construction vessels and barges (e.g.:- pipelay/ heavy lift/ dive support/ROV/accommodationsupport,etc.)

• Logisticsvessels(e.g.OSVs/crewboats)

Note: When logistics vessels are used as platforms to carry out project/ constructionactivitiestheyshouldfollowtheguidelinesforproject/constructionvessel/barges.





3 DPRELATEDDOCUMENTATION

3.1 GENERAL

3.1.1 ItisrecommendedthatDPvesselowners/operatorsshouldmaintainthedocumentationlistedinthetablebelowandshoulddevelopandimplementassociatedprocessesforthepurposesof:

• ensuringthesafeandeffectivemanagementofthevesselinDP

• ensuringthetechnicalsuitabilityofthevesselforeachDPactivityitisrequiredtocarryout

• determiningtheconfigurationforthecriticalactivitymodeofoperationandthetaskappropriatemode

• understanding the vessel’s station keeping capabilities following the worst casefailure

•

ensuringcompliancewithappropriatestandardsandguidelines

•

providingtrainingandfamiliarizationmaterialtovesselcrews

3.2 RECOMMENDEDDOCUMENTATION

3.2.1 Current versions of the documents in the list below should be kept on board and, inaddition, where feasible, at the shore based centers of technical management.Documentsthathavebeensupersededshouldbeclearlymarkedandkeptseparatefromcurrentversions. Documentsmaybeinelectronicor,hardcopyformator,both.

3.2.2 Furtherguidancerelatingtothelisteddocumentsisgiveninappropriatesections laterinPart1.

Table3-1 RecommendedDocumentation

No. Document Guidance

1 DPSystemFMEAorFMECA

Tobekeptuptodate,incorporatingallmodificationsandadditionssinceoriginalstudy,ifnotinthedocumentitself,thenbyothertraceablemeans. Allrecordstobekeptonboard.

2 DPFMEAProvingTrials

TobeconductedtoproveinitialDPFMEAandatothertimestoprovemodificationsandadditionstotheDPsystem. DPFMEAProvingTrialsshouldberepeatedeveryfiveyears.

Findingsandrecommendationstobeaddressedinaccordancewiththeircriticality. Allrecordstobekeptonboard.

3 AnnualDPTrials

Tobeconductedannually. Findingsandrecommendationstobeaddressedinaccordancewiththeircriticality. Previoustrialsreportsandassociatedcloseoutdocumentationtobekeptonboard.

4 DPCapabilityPlotsHardcopyDPCapabilityPlotsrelevanttothevessel’sareasofoperationstobereadilyaccessibletoDPOsattheDPcontrollocation.






5 DPFootprintPlotsHardcopyDPFootprintPlotstobetakenbyDPOsandkeptonboard. SeeNote1atendoftable.

6ServicereportsconcerningtheDPsystem

Completehistoryofservicereportstobekeptonboard

7DetailsofallDPrelatedmodificationsandadditions

RecordsofallDPrelatedmodificationsandadditionstobekeptonboardcompletewithinterfaceandtestinginformation.

SeeNote2atendoftable..

8VesselauditreportsandDPauditsandinspectionreports.

Completehistoryofallauditreports,DPauditsandinspectionreports,inc.,findingsandcloseoutstobekeptonboard

9 DPOperationsManualVesselSpecificDPOperationsManual

1

,tobereadilyaccessibleattheDPcontrollocationandusedbytheDPOsasareferenceforconductingDPoperations.

10 DPIncidentReportsRecordsofallDPstationkeepingandotherDPrelatedincidentstobekeptonboard,inc.,investigationrecordsandcloseouts.

11

DPMobilization/DPFieldArrival/TrialsProcedures

(BridgeandEngineRoom)

RecordsofDPMobilizationTrialsandDPFieldArrivalCheckliststobekeptonboardfortheperiodsetbytheowner/operatorand,whererelatingtoaDPincidentpermanentlystoredinretrievablearchives.

12

DPLocationandWatchkeepingchecklists

(BridgeandEngineRoom)

RecordsofallDPLocationandWatchkeepingCheckliststobekeptonboardfortheperiodsetbytheowner/operatorand,whererelatingtoaDPincident,permanentlystoredinretrievablearchives.

13DPrelateddrillsandemergencyresponsedrills

RecordsofDPrelateddrillsandemergencyresponsedrillstobekeptonboardinretrievablearchives.

14 DPfaultlogRecordsofallfaultsrelatedtotheDPsystemtobekeptonboardpermanentlyinretrievablearchives.

15 DPdatalogging

WherethevesselhasDPdataloggingfacilitieselectronicrecordsshouldbekeptonboardfortheperiodsetbytheowner/operatorand,whererelatingtoaDPincident,permanentlystoredinretrievablearchives.

16 DPalarmprinterreadouts

HardcopyrecordsoftheDPalarmprinterreadouttobekeptonboardfortheperiodsetbytheowner/operatorand,whererelatingtoaDPincident,permanentlystoredinretrievablearchives.

1ThevesselspecificDPOperationsManualisadditionaltotheDPcontrolsystemmanufacturer’sOperatorManual






17DPfamiliarisationandcompetencyrecords

AllrecordsrelatingtovesselspecificDPfamiliarisationandcompetencyforDPOs,engineersandelectricianstobekeptonboardpermanentlyinretrievablearchives.

18RésumésandvesselspecificworkrecordsofallkeyDPpersonnel

ResumesofallkeyDPpersonnel,copiesofcertificationandqualifications,recordsofDPwatchkeepinghourstobemaintainedonboard.OriginalDPOcertificatesandDPLogBookstobeheldbytheDPOsonboardthevessel.

Note1 ItisacknowledgedthatDPFootprintPlotsmaybe lessrelevantforDPMODUsthanforotherDPvesseltypes.

Note2:- Owners/operatorsshouldkeepadequaterecordsanddocumentationrelatingtomodifications and additions that could have an effect on the DP system,especially interfaces between equipment from different vendors. This is asrelevantforequipmentwhoseprimaryfunctionliesoutsidetheDPsystem,suchas an Emergency Shutdown Systems (ESD), pipe tensioner systems and firemonitor systems as it is for DP equipment, such as propulsion, positionreferencesandsensors. Allmodificationsandadditionsshouldbesubjected toFMEAtypeanalysisandundergoProvingTrialstypetesting.





4 THEMES

4.1.1 The themes in this Part 1 of the MTS Guidance are addressed from a management

perspective. TheyarecoveredingreaterdepthandatanoperationallevelinPart2.

4.2 DPCLASS

4.2.1 It is recommended thatDP vesselswiththefollowingDP equipment classnotationsbeusedforthefollowingactivities.

ApplicationonDP

MinimumRecommendedDPEquipmentClass

(SeeNote1below)

Remarks

Drilling 2

Diving 2

Pipelay 2

UmbilicalLay 2

Lifting 2

Accommodation 2

ShuttleOfftake 2

ROVSupport(OpenWater) 1

ROVSupport(CloseProximity- Surface/

Subsea)

2

FloatingProduction 2

SeismicandSurveyvessels(Openwater-outside500mzone)

**Classinaccordancewithcontractualrequirements

WellStim 2*

VesselsoflesserClassmaybeusedwiththeappropriatestructuredriskidentificationandmitigationmeasuresinplace.

LogisticsOperations 2*

VesselsoflesserClassmaybeusedwiththeappropriatestructuredrisk

identificationandmitigationmeasuresinplace.

Note Thevessel’sDPsystemshouldnormallybe set upandoperated todeliver theintent of the DP class notation. However, on occasion and after a properassessment of the risks, the vessel may be set up in accordance with therequirementsoftheTaskAppropriateMode.

4.3 DPFMEA

4.3.1 TheDPvessel’sDPFMEAisthemostimportanttechnicaldocumentinthelistofrequireddocuments. TherequirementforaDPFMEAhasitsoriginsinIMOMSC/Circ645(1994)

“Guidelines for Vessels with Dynamic Positioning Systems”. These benchmarking





guidelinesprovidethe foundation forall subsequentDP rules, regulationsandguidanceissuedbyClassandotherindustrybodies,suchasIMCA.

4.3.2 The IMO Guidelines require all DP vessels to be subjected to survey and testing inaccordancewith IMO’sspecified guidelines. This includesinitialandperiodic completesurveyand testingof allsystemsandcomponentsrequired tokeeppositionaftersinglefailuresassociatedwiththevessel’sassignedDPequipmentclass.

4.3.3 TheperiodiccomponentintheIMOGuidelinesrequiresthecompletesurveyandtestingtobe repeated every five years to ensure full compliance with applicable parts of theguidelines.

4.3.4 InadditioncompliancewithIMOGuidelinesrequiressurveyandtestingafterdefectsarediscovered and corrected and, after a DP related accident and, whenever significantrepairsoralterationsarecarriedout,soastodemonstratefullcompliancewithapplicablepartsoftheguidelines.

4.3.5 The IMO Guidelines do not make clear distinction between vessels of different DPequipmentclass.

4.3.6 This IMOrequirement has been interpretedby theDP community such that thesurveyrequirementismetbyaDPFMEA(orFMECA2)andthetestingrequirementbyDPFMEAProvingTrials.

4.3.7 Accordingly,allDPvesselsofDPClass2or3arerequiredtohaveaClassapprovedandstampedDPFMEAandDPFMEAProvingTrials.

4.3.8 Definitions:AnFMEA isasystematicanalysisof systemsandsub-systemstoalevelofdetail that identifiesallpotentialfailuremodesdownto theappropriatesub-systemleveland their consequences. A FMECA is an extension of an FMEA that adds a riskassessmentofeachfailuremodetodetermineitscriticality.

4.3.9 InadditiontocomplyingwiththeIMOGuidelinesandtherelevantDPrulesofthevessel’sClassificationSocietytheDPFMEAshouldachieve thestandardsofdetailandanalysiscontainedinthefollowingindustryguidance;

• IMCAM166“GuidanceonFailureModesandEffectsAnalysis”

• IMCAM178“FMEAManagementGuide”

• IMCA M04/04 2004 “Methods of Establishing the Safety and Reliability of DPSystems”

Note FMEAs are a requirement to obtain DP Class 2 and 3 notation. Whilst notstipulated as a class requirement for DP 1 vessels owners/ operators areencouragedtosubjecttheirDP1vesselstotheDPFMEAprocess.

Note ParticularattentionshouldbepaidintheDPFMEAtotheinterfacesbetweentheDPsystem andothersystems thathavethepotential toaffecttheDPsystem,suchaswherethevesselisfittedwithanEmergencyShutDown(ESD)system,pipetensionersystemorfiremonitorsystem.

4.3.10 KeyDPpersonnel,includingthevesselMaster,DPOs,EngineersandElectriciansshouldhaveadetailedknowledgeoftheDPFMEAandshouldusetheinformationprovidedtobefullyinformedaboutthecapabilitiesandlimitationsofthevessel’sDPsystem.

2UnlessexpresslystatedinthisGuidancedocumentaFMECAisinterchangeablewithanFMEA.





4.3.11 TheresultsfromaDPFMEA,inparticularissuesrelatedtothevessel’sworstcasefailureand significant single point failures, should be used in the formulation of operational,emergencyresponseandplanningdecisions.

4.4 DPCAPABILITYPLOTS

4.4.1 DP CapabilityPlots should be calculatedfor the vessel. Guidanceis provided on DPCapabilityPlotsinIMCAM140Rev1,“SpecificationforDPCapabilityPlots”.

4.4.2 These theoretical plotsare calculated from detailedinformation of thevessel’shull andsuperstructure form and available thruster power. The calculations should useenvironmentaldata(seastate,windandcurrent)appropriateto theareainwhichtheDPvesselistooperate.

4.4.3 Theseplotsshouldshowthelimitingwindspeed360degreeenvelopesforthescenariosbelow, where each point on the envelope represents the wind speed at which it iscalculatedthatthevesselwillbeunabletomaintainpositioninDP.

4.4.4 DPCapabilityPlotsshouldincludethefollowingscenariosatcurrentspeedsof0kts,1ktand2kts,oratothercurrentspeedsthatarerepresentativeofthelocationinwhichtheDPvesselistooperate:

• Fullyintactpowergenerationandthrusters.

• Lossofmosteffectivethruster(s).

• Followingtheworstcasefailure.

Note TheDPCapabilityPlotsshouldbeprovidedinaformatthatisintuitivetotheuseronboard(e.g.PolarPlot).

4.5 DPFOOTPRINTPLOTS

4.5.1 DP Footprint Plots should also be produced on board. DP Footprint Plots are nottheoretical. They are actual measurements of the vessel’s DP station keepingperformanceintheactualenvironmentalconditionsandthrusterconfigurationatthetimetheplotwastaken. DPFootprintPlotsshouldbetakenwheneveropportunitiesarise,suchasduringstandbyperiods,weatherdowntimeoronarrivalatthefield. PlotsshouldbetakenforthethrusterconfigurationsusedintheDPCapabilityPlots,i.e.fullyintact,lossofmosteffectivethruster(s)andafterworstcasefailure.

4.5.2 Some DP systems have a software application that produces DP Footprint Plotselectronically. DPOscanalsoproduceDP FootprintPlots bymanualmethods using aplottingsheet.

4.5.3 DPFootprintPlotsservetwomainpurposes.

1. They provide a scatter plot of vessel positions at regular intervals around therequiredsetposition(thisshowsaccuracyofstationkeeping)

2. Theyalsoprovidecomparisonpointsonthelimitingwindspeedenvelopegiven inthetheoreticalDPCapabilityPlots(thisshowswindspeedsatwhichitwasseenthatthe vessel was unable to maintain position, thus validating or contradicting thetheoreticalDPCapabilityPlotsforthevariousthrusterconfigurations.)

4.5.4 DP Footprint Plots serve other purposes, including learning and familiarisationopportunitiesforDPOsandinprovidingsnapshotsofvesselstationkeepingbehaviourforspecificlocationsandactivities.

4.5.5 Theoretical DP Capability Plots and DP Footprint Plots combine together to enhance

knowledgeandunderstandingofthevessel’sDPstationkeepingability.





Note DPFootprintPlotsoriginatedinharshweatherregions,suchasintheNorthSea.Theplotsareusedtogainabetterunderstandingof thevessel’sactualstationkeepingperformanceand limitations in intact and, invariousdegraded thruster

configurations,includingworstcasefailure,whilstthevesselisbeingsubjectedtorealenvironmentalforces.

4.5.6 ItisacknowledgedthatDPFootprintplotsmaybeoflessrelevancetoDPMODUs.

4.6 POSITIONREFERENCESYSTEMSANDSENSORS

4.6.1 The DP vessel should be equipped with suitable position reference and sensors inaccordancewith thevessel’sDPclassnotation and operational requirements. Positionreferencesystemsshouldbeselectedwithdueconsiderationtooperationalrequirements,both with regard to restrictions caused by the manner of deployment and expectedperformanceinworkingsituations.

4.6.2 Positionreferencesystemscompriseabsoluteandrelativesystems. Anabsolutesystem

givesvesselgeographicalposition. Arelativesystemgivesvesselpositioninrelationtoanon-fixedreference. Arelativesystemcanbeusedasanabsolutesystemifinstalledonapointthatisafixedgeographicalposition. And,anacousticabsolutesystemcanbeusedasarelativesystemifattachedtoanon-fixedasset.





4.6.3 Thefollowingarethemostcommonpositionreferencesystemsinuse.

Absolute DGNSS(DGPSandGLONASS)

Acoustic(USBL,SBL,LBL)TautwireSeeNote

Relative Artemis

Laser(Fanbeam,Cyscan)Radar(RADius,RadaScan)DARPS

Note Classrulesgiveminimumrequirementsforthenumberofpositionreferences.Whereoperationaluptimeisoneofthekeysuccessfactorsthebenefitgainedby consciously exceeding the minimum requirements are to be evaluated.Other benefits of exceeding minimum requirements include greater

redundancyandimprovedstationkeepingperformance.Caution Additionalpositionreferencesystemsshouldbebasedondifferentprinciples.

Itisgenerallynotrecommendedtousemultiple(>2)satellitebasedsystemsinconjunction with other positions reference systems as this may result inskewedweightinginfavorofmultiplesatellitesystems.

Note ItcouldbedebatedthatTautWireandAcousticpositionreferencesystemsarerelativepositionreferencesystems. Forpurposesofthisdocument,absoluteindicatesthatthispositionreferencesensorisindependentofanotherfixedorfloatingoffshorestructure.

4.7 RECOMMENDEDDPCONTROLMODESFORDPACTIVITIES

4.7.1 The DP vessel should be equipped with suitable DP modes and features with dueconsiderationtooperationalrequirements,bothwith regardto restrictionscausedbytheactivityandperformancecriteriarequiredtoexecutetheactivitysafelyandsuccessfully.

4.7.2 ThefollowingselectedDPcontrolmodesarerelevanttospecificDPactivities.

TargetFollow Enables the DP vessel to follow a moving target and is used, forexample,tofollowanROValongapipeline.

HeavyLift Takesaccount of theeffects of theload transfer on the mass of thevessel and the additional lateral force, normally by reducing gain andrelaxingtheDPcontroller.

4.7.3 ExternalForceCompensation- Wherethemeasuredexternalforceactingonthevessel,whichisseparatefromtheenvironment,isincludedintheDPcalculationandtreatedasa

forcefeedforward. Thismode isused toaccountforpipetensions inapipelayerandhawsertensioninashuttletanker.





4.7.4 FireMonitor Compensation - Used to compensate for the varying forces exerted onvesselfromthefiremonitors.

Weathervane EnablestheDPvesseltorotatewiththewind,currentandwavesaroundafixedormovingpointcalledtheterminalpoint. Neithertheheadingnorthe position of the DP vessel is fixed. The heading of the vessel iscontrolledtopointtowardstheterminalpoint. Thepositionofthevesselis controlled to follow a circle, called the setpoint circle, around theterminalpoint. Thismode isappropriate for connected shuttle tanker/FPSOoperations.

Caution It is not uncommon for the term “weathervane” to be used to denote“minimumthrust”, i.e. where theDP controlsystemallowsthevessel’sheadingto rotate tominimize externalforcesactingonthevesselandthrusterrequirements. Thesetermsshouldnotbeconfused.

4.8 TRIALSANDCHECKLISTS

4.8.1 ArangeoftrialsandchecklistsistobeprovidedforeachDPvesselandimplementedasaverificationthatthevessel’sDPsystemcomplieswithand,isoperatedinaccordancewith,applicablestandardsandguidelines. Thisverificationprocessshouldconfirmthefailuremodes and their effects on the systems and equipment analysed in the DP FMEAdocument (to include the Worst Case Failure) and the vessel’s station keeping abilityfollowing itsWorstCaseFailure. Owners/operators shouldreferto the following listoftrialsandchecklistswhendevelopinganappropriateregimefortheirownDPvessels. ThelistbelowisatypicallistforaDPdivesupportvessel.

4.8.2 DPFMEAProvingTrials: Aseriesoftestsusedtoproveexpectedeffectsoffailuremodesfound in the FMEA desktop analysis. These tests should also include the testing ofinterfaces between different vendor systems and equipment. These tests should be

conducted immediately following launching of a new build vessel and followingmodifications,additions,upgradesrepairs.

4.8.3 Endurance Trials:- (new build/ system modifications class requirement): To prove theoperationoftheDPsystemunderloadconditionsforat least4hourswithoutsignificantalarmsoftheDPsystem.

4.8.4 Annual DP Trials:- A series of tests of fault and failure conditions relevant to the DPSystem. Thetestsshouldbedesignedtoprovesystemredundancy,asdefinedintheDPFMEA, system and equipment functionality, to validate repairs and preventivemaintenance,andtesttheoperationofprotectionanddetectiondevicesandresponsessoastodemonstratethatthevessel’sDPsystemremainsfitforpurpose. AnnualDPTrialsshouldbeperformedataspecificonceayearwithin3monthsoftheanniversaryofthe

previousyear’s trials. AnnualDPTrialsalsoprovide theopportunitiesfortrainingof thevessel’screwandenhancementoftheirknowledgeoffailuremodesandtheireffects.

Note Experience has shown that, owing to heavy operational demands, DP drillingunitsare notusuallyable tomeet the abovecriteriafor conductingAnnualDPTrialsataspecific timeonceayear. ThishasbeenrecognizedbytheindustrywithpublicationofspecificguidancerelatingtotheconductofAnnualDPTrialsforDPMODUs. ThisisgiveninIMCAM191,“GuidelinesforAnnualDPTrialsforDPMobile Offshore DrillingUnits”. Theguidancesetsout a regimeof annualtesting that is conducted on an incremental basis throughout the year asopportunitiesarisebutneedstobecompletedwithinatwelvemonthperiod.





4.8.5 DPMobilizationTrials: Aseriesofteststobecarriedoutatthestartofacontract,subjectto client requirements, to demonstrate redundancy and functional limitations of the DPsystem.

4.8.6 DPFieldArrivalTrials:AseriesofchecksandteststhatconfirmsatisfactoryperformanceoftheDPsystemandverifythesetupmodeofoperationandDPfunctions.

4.8.7 DP Location Set Up Checklist: A series of checks to demonstrate that the vessel isproperlysetupfor thelocation,in particular thesatisfactoryperformanceof thepositionreferencesystems.

4.8.8 Pre-DiveChecklist:- Aseriesofchecksperformedpriortocommencingdivingoperations.Mainandbackupcommunicationtestsshouldbeincludedinthisprocess.

4.8.9 ECR Checklists: Aseriesof checks and tests thatverifythatthe vessel’sset upandconfigurationofsystemsandequipmentmeettherequirementsofthenecessarymodeofoperationasdeterminedbytheCriticalActivityModeofOperation (CAMO)andtheDP

ClassortheTaskAppropriateMode(TAM).4.8.10 500mChecks:-Aseriesofchecksandtestsperformedbeforeenteringthe500mzoneof

anassetinwhichsetupmodeandfunctionsareverifiedandconfirmed. Approvalisthenobtainedtooperateincloseproximitytotheasset. Mainandbackupcommunicationtestsshouldbeincludedinthisprocess.

4.8.11 WatchStatus/6HourChecklist: AseriesofchecksandtestsperformedbytheDPOstoverifyandconfirmthesetupoftheDPsystempriortotakingovertheDPwatch.

4.8.12 PostDPIncidentTrials: Testsperformedtoensurethatthecorrective/repairmeasurestakenfollowingaDPincidenthaveproperlyaddressedthecausesoftheincidentandthatthevessel’sDPsystemisinasafeandoperablecondition.

4.8.13 PostDPModificationTrials: Aseriesofchecksandteststhatareusedtodeterminetheeffectsofmodificationsand/oradditionsontheDPsystemandthevessel’ssubsequentstationkeepingperformance.

Note Thenomenclatureusedforthetrialsandchecklistslistedaboveisbasedontheguideline document, IMCA M112, :”Guidelines for Auditing Vessels with DPSystems”. It is recognizedthat these trialsandchecklistscouldbegivenothertitles.

4.9 DPOPERATIONSMANUALS

4.9.1 AvesselspecificDPOperationsManualshouldbepreparedforeachDPvessel.

4.9.2 ThevesselspecificDPOperationsManualisthemostimportantoperationaldocumentin

the list of required documents. The requirement for a manual has its origins in IMOMSC/Circ645(1994)“GuidelinesforVesselswithDynamicPositioningSystems”.

4.9.3 The IMO Guidelines require a series of checklists, test procedures and DP operatinginstructionstobeincorporatedintoonemanual.

4.9.4 EachClassificationSocietyhasitsownspecificrequirementsforaDPOperationsManual,eachwithdifferentrequirementsforcontent.

4.9.5 Therecommendationssetoutbelowaddressareas thatarenotnecessarilyrequiredbyclass. Theyarebasedoncurrentindustrypractices.

4.9.6 Themanual should contain sufficiently detailed instructionand guidance to enable thevessel tobe operated safely inDPandsafelyexecute its intendedactivities. Thiswill

include a clear statement on the DP philosophy for the vessel, the organisation,

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responsibilitiesand roles of keyDP personnel, trainingand competency, watchkeepingand manning, vessel technical data and layout, vesselDPcapabilities, operating limits,operating modes, the planning and preparation of DP operations, DP operating

procedures,emergencyprocedures,DP incidenthandling andalert systemsandvesselspecifictrialsandcheckliststhatapplyuniquelytothevessel.

4.9.7 Themanual should specificallyaddressoperational interfaces betweendifferent vendorsystemsandequipmentto ensurethat theyareconfiguredandoperatedproperly. Thisshould include interfaces between systems and equipment thatare not part of the DPsystem but whichmayaffect the DP system, suchasEmergency Disconnect Systems(EDS)onMODUs,tensionersystemsonPipelayvessels,etc.

4.9.8 Thevesselspecificmanualmayalsocontaingenericcontent,suchascompanypolicies,proceduresandstandingorders.

4.9.9 Themanual should represent the way the vessel is operated in DP. For complicatedpowersystemsand/orthrusterconfigurations,itmaybeusefulprovidetheoperatorwitha

thruster and generator operating strategy (TAGOS) to assist in the decision on whatgenerators and thrusters to use for different circumstances and different equipmentavailabilities.

4.9.10 Guidance on thecontents of vessel specificDPOperations Manuals is provided in thefollowingIMCAguidelines,M103,M109,M117(contingencytraining)andinclasssocietyDPrules.

4.10 ACTIVITYOPERATIONALPLANNING

4.10.1 In recognizing that exposure to risks manifests itself during vessel operations it isrecommendedthatactivitiesperformedbyDPvesselsshouldbesubjecttoplanningandpreparation. Inplanningandpreparingfortheactivitiesthefollowingshouldbeconsidered

and,whereappropriate,documented:

• Configuration for the Critical Activity Mode of Operation (CAMO) or, whereappropriate,theTaskAppropriateMode(TAM).

• PreparationoftheActivitySpecificOperatingGuidelines(ASOG),includingonboarddiscussionwithallrelevantstakeholdersaspartofthepre-projectexecution/activity.

• Discussiontobeincludedinpre-projectexecutionreadinesschecklist.

• Capabilitiesofthevessel,bothintactandresidualcapability,following WorstCaseFailure(WCF).

• Limitationsimposedbywaterdepth.

• Consequencesofalossofpositionand/orheading.

•

Limitationsimposeduponoperationsbyresidualcapability.

• SIMOPSand marinevessel interactionandconsequences arisingfromchangeofstatus(GreentoBlue,YelloworRed).

• Theactivitybeingperformedandthenecessarytimetoterminatetobringvesseltoasafepositionupontheonsetoffailure.

4.10.2 Activities should include day to day operations, any specific operation relevant to thedesign of the vessel, as well as any unique operations the vessel is called upon toperform.

4.10.3 Appropriate measures should be in place to clearly identify critical tasks/ operationalphasesoftheactivityandtoensurethatthevesselissetupinCriticalActivityModeof





OperationandoperatingwithinpostWCFcapability. WhereadecisionhasbeenmadetooperateinaTAMaseparateASOGcoveringTAMshouldbeproduced.

Note TheASOGshould be developedbyextractingallthe relevant informationfromdetailed technical review of the vessel’s DP FMEA, operational manuals andprojectspecificprocedures. TheASOGshouldbevalidatedonboard.

4.10.4 OnaDPMODU,ASOGsareknownasWSOGs. SomeownersrefertoitasWSOC(WellSpecificOperatingCriteria)

4.11 COMMUNICATIONS

4.11.1 Thevessel shouldbeequipped with theappropriateprimaryandsecondaryequipmentneededtocommunicatebetweenallparties(stakeholders)whilstcarryingouttheintendedtask.

4.11.2 Effectiveinternalandexternalcommunicationsisakeytooltomanagerisk.

4.11.3 Communicationsinthiscontextincludevoice,visual(lights/displays)andaudiblemeans(alarms). MeansofcommunicationarenotlimitedtotheabovebutincludeintegratedITsystems using wireless network technology that combine communications with otherfeatures,includingAISandDGNSS.

4.11.4 Operational specific visual and voice communications should ensure that the pertinentinformationflowsbetweenthekeyoperatingpointsaswellastoandfromassetsand/orothervesselsthatmightbeaffectedbytheoperationbeingcarriedout.

4.11.5 Theseoperatingpointsmaybeonboardthevesselaswellasonotherfacilitiesinvolvedwith the activity. Communication protocols are to be set up to provide pertinentinformationregardingintent,currentstatusofplannedaswellasunexpectedeventsduringtheexecutionoftheactivity.

4.11.6 Continuity of communications during foreseeableemergencysituations should be takenintoaccount.

4.11.7 Communicationsshouldbetakenintoaccountwhendetailingtherolesandresponsibilitiesofkeypersonnelduringtheplanningstagesfortheintendedtask,ensuringthatacommonworkinglanguageandterminologyisusedatalltimes.

4.11.8 GuidanceoncommunicationsisprovidedinM103,M182andM205.

Note The importance of communication to be emphasized by incorporating into theASOG.

4.12 DPPLANNEDMAINTENANCE

4.12.1 DP vessels should have a structured planned maintenance system that specificallyaddresses maintenance of the vessel’s DP system, equipment and support systems.RelevantguidanceisgiveninIMCAM109.

4.12.2 Plannedmaintenanceshouldaddress allequipment that hasan impact on thevessel’sstationkeepingcapabilities. Thisshould includeindirectcomponentssuchasgeneratorcircuit breakers, bus tie breakers, etc. Maintenance should include regular cleaning,calibration,andtestingofequipmentasoutlinedinmanufacturer’srecommendationsandindustryguidelines.

4.12.3 Recordsofplannedandunplannedmaintenanceshouldbekeptinanauditableformat,eitherhardcopyorappropriateelectronicformat. These recordsshouldincludevendorservicerecordsaswellasmaintenanceperformedbyvesselpersonnel. These records

shouldbekeptonboardfortheperiodspecifiedbytheowner/operator.

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4.12.4 AminimumnumberofrequiredcriticalDPsparesshouldbemaintainedonboard. Thecriticalspareinventoryshouldbemonitoredviaaformalinventoryprogramthatiscloselylinkedto theplannedmaintenancesystem. Thisshouldassistingettingbacktonormal

operatingconditionafterequipmentfailureorDPincident.

Note Theclient’sduediligenceprocessisusuallythemaindriverinthecriticalpathtoreturntonormaloperatingcondition. Typically,thisalsoinvolvesvendorsupportaswellastheclient’sDPconsultant.

Note MaintenanceonDPrelatedequipmentwhilstconductingDPoperationsshouldbecontrolledbya documentedpermitto worksystemandshouldalwaystake intoconsiderationthepotentialalterationof failuremodesandincreasedcriticalityoffailureconsequencesonDPcapabilitiesand/orredundancy.

4.13 DPINCIDENTS

4.13.1 DP vessels should be provided with and operate appropriate DP incident reporting,

investigationandclosingoutprocedures. Thisshouldbeinaccordancewithvesselowneroroperators’and, ifapplicable,clients’processes. Documentedrecordsshouldbekeptandbecapableofauditing.

4.13.2 WhereCAMO,TAMandASOGareusedastoolstomanageDPoperationsasuggestedapproachisthat,apartfromtheexceptionsinthenotesbelow,anyreactivechangeofDPstatusfromGREENtoYELLOWorREDshouldberegardedasaDPincident,andshouldbereported,recordedandinvestigated.

Note AchangeofstatustriggeredbyprearrangedagreementbetweentheMaster,andsenior onboard decision makers, allowing the vessel to exceed environmentallimitsshouldnotberegardedasaDPincident.

Note Anoperatorinitiatedchangeofstatusasa resultofaconsciousdecisionbasedon risk analysis of the circumstances where the trigger points have not beenreachedshouldnotberegardedasaDPincident.

4.13.3 ItisrecommendedthatreactiveYELLOWandREDDPincidentsareinvestigatedassoonaspracticableaftertheDPincidentand,whererelevant,trialsarecarriedoutaspartoftheinvestigationprocess.

Thepurposeoftheinvestigationandthetrialsshouldbe:

• toassistinidentifyingtherootcausesoftheincident

• toverifyandvalidatethatmeasurestoaddresstherootcauseareeffective

• tovalidatethat effectivemeasureshavenot introducedanyadditional potential tocausefailures(bothhiddenandapparent)

4.13.4 In theevent of theoccurrenceofaDP incident relatingtothe vessel’sconfigurationasdescribedintheDPFMEAandotherdocuments,itissuggestedthattheFMEAproviderisinvolvedintheincidentinvestigation. ThiswillfacilitatelessonslearnttobeimplementedintotheDPFMEAandprovingtrialsprogram.

4.13.5 Owners/ operators of DP vessels are encouraged to share lessons learned from DPincidents with the widerDPcommunity. DP systemsand equipment vendorsare alsoencouraged todo likewiseandtoshare informationonunexpectedfaults, featuresandfailuresthatareidentifiedinoperation. IMCA’sstationkeepingincidentreportingschemeprovides a suitable channel for disseminating relevant information throughout the DPsector.





4.14 REPORTINGANDRECORDKEEPING

4.14.1 OwnersoroperatorsofDPvesselsshouldhaveaneffectivereportingandrecordkeepingsystem.

4.14.2 Thereshould be aclear line of reportingDP related itemsonboard theDP vessel andbetweeneachdepartmentandthisshouldinvolvekeyDPpersonnel. Thereshouldalsobe a clear line of reporting between the DP vessel and the company’s shoresidemanagement. DPrelatedrecordsshouldbemaintainedonboardand,whereappropriate,atthecompany’spremises.

4.14.3 ThedocumentsandrecordscontainedintableA,Section3.2,shouldbeaccessibletokeyDPpersonnelandtootherinterestedparties.

4.14.4 DPvessels,onoccasion,carryoutactivitieswhichmaybeuniquetoprojectrequirements.Records of these activities including pertinent information from Hazards and RiskIdentification (HIRAs) should be made and kept onboard for future reference, both for

trainingand familiarisation processesaswell as forreference incaseof similar projectrequirementsinthefuture.

4.15 COMPETENCE

4.15.1 Definition- Competenceis theacquisitionofknowledge,skillsandabilitiesatalevelofexpertisesufficienttobeabletoperforminanappropriateworksetting.

4.15.2 DPvesselowners/operatorsshouldoperateastructuredcompetenceassuranceprogramthat isapplied toall keyDPpersonnel withspecial focus on ensuringvessel and taskspecificcompetence.

GuidanceisprovidedinM103,M117(IMO738)

4.15.3 Vessel specific competency should, as a minimum, be demonstrated in the followingareas:

• Operationalmodes

• DPFMEAfamiliarization

• DPOperationsManualfamiliarization

• Project/activityrequirements

• Contingencyplans,modesanddrills

4.16 MANNING

4.16.1 Vesselsshouldcomplywiththestatutoryrequirementsforsafemanning.Additionally,forDPoperations,manningshouldbeinaccordancewiththefollowing:

DPBridgeCrew

Operation MinimumBridgeCrewpershift MinimumExperience

Whenundertakingcriticalactivitiesinproximitytosurfaceorsubsurfacestructures

SeeNote1below

2unlimitedDPOsonthebridgecapableofoperatingthevesselbothinDPandmanualcontrol.

SeeNote2below.

UnlimitedDPOwithaminimumof3yearsexperienceonavesselengagedinsimilaroperations,atleast6monthsofwhichshouldhavebeenonthesubjectorsistervessel.Experiencelevelshouldbedocumentedandauditable.





SeeNote3below

Note1

Note2

Note3

Criticalactivitiesarethoseactivitieswhere theconsequencesofequipment failureorlossofpositionaregreaterthanundernormaloperatingcircumstances. Forexample,

criticalactivitiesonaDPdivesupportvesselwouldincludethoseoccasionswheretheTimetoTerminateislong,suchaswhenthediverisinsideaweldinghabitatorwherethediver’sworksiteisinsidetheconductortubesataproductionfacility.

The Master should not be considered as one of the required unlimited DPOs formeetingthemanningrequirements.

It is recognized that in practice, given the near term market conditions owners/operatorswillbechallengedtomeettherecommendedlevelofexperienceforDPOs.Owners/operatorsshouldrecognizetheassociatedriskfrominexperiencedpersonneland have plans in place to address them while striving to reach the recommendedexperiencelevels.

4.16.2 Engineers - There should be sufficient licensed engineers on board for all expectedoperations.

4.16.3 Atleastonelicensedengineershouldbeavailableatalltimes,shouldbeonwatchduringcriticalactivitiesandshouldhaveatleast6monthsexperienceonsimilarequipmentandoperations.

4.16.4 Theengineer should be fullycognisant of DP operations, familiar with thevessel’s DPFMEAdocumentandtheeffectsoffailuresofequipmentrelatingtothepositionkeepingofthevessel.

4.16.5 InDP 2or3operations, theengineershouldbe familiarwith thegeneral philosophyofredundancyasitrelatestosplitmechanical,electricalandancillarysystems.

4.16.6 Electrician/ Electrical Engineer - If required on board, an electrician should haveappropriatehighvoltagetraining/certification, ifapplicabletothevessel. Aswithvesselengineers,theelectrician/electricalengineershouldhaveatleast6monthsexperienceonsimilarequipmentandoperations.

4.16.7 The electrician should likewise be fully cognisant of DP operations, familiar with thevessel’s DP FMEA document and the effects of failures of equipment relating to thepositionkeepingofthevessel.

Notes Where the minimum experience requirements cannot be met a risk basedapproach should be taken to determine the suitability of personnel and anyadditionalsupportrequirementsforintendedoperations.

4.16.8 For low risk operations guidance is provided in IMCA M182. If used, the guidanceprovidedwithinthisdocumentshouldbevalidatedagainsttherisks.




5


ABBREVIATIONS

AIS AutomaticIdentificationSystem

ASOG ActivitySpecificOperatingGuidelines

CAMO CriticalActivityModeofOperation

DGNSS DifferentialGlobalNavigationSatelliteSystem

DGPS DifferentialGlobalPositioningSatellitesystem

DP DynamicPositioning

DPO DPOperator

ECR EngineControlRoom

ESD EmergencyShutdownSystem

FMEA FailureModesandEffectsAnalysis

FMECA FailureModesandEffectsandCriticalityAnalysis

GPS GlobalPositioning(satellite)System

IMCA InternationalMarineContractorsAssociation

IMO InternationalMaritimeOrganisation

IT InformationTechnology

LBL LongBaseline

MTTR MeanTimetoRepair

MRU MotionReferenceUnit

SIMOPS SimultaneousOperations

SBL ShortBaseLine

SSBL SuperShortBaseLineTAGOS ThrusterandGeneratorOperatingStrategy

TAM TaskAppropriateMode

TTT TimetoTerminate

VRU VerticalReferenceUnit

WSOG WellSpecificOperatingGuidelines




6


REFERENCESTANDARDS/GUIDELINES

Source Title RevisionNo.andDate

DPOperationsContent

IMOGuidelinesforVesselswithDynamicPositioningSystems

IMOMSC/Circ645

1994

Internationallyrecognizedbasisforthedesign,equipment,testing,verificationandoperationofDPvessels

ClassClassificationSocietyDPEquipmentRules,SurveyRulesandassociatedrules.

ABS,DNV,LRS,GL,BV,KR,etc.,2010

DPequipment,DPoperationsmanuals,DPtrials,DPsurveys,DPcertificationandDPclassnotations

USCG

UseofDynamicPositioning(DP)byOffshoreSupply

Vessels(OSVs)forOilandHazmatTransfers

USCGD8PolicyLetter

Ltr-01- 2003

DPclassificationguidance,DPoperatingguidance,DPtrainingand

certificationguidance

IMCAGuidanceonFailureModesandEffectsAnalysis

M166

2002DPFMEA/FMECA

IMCAMethodsofEstablishingtheSafetyandReliabilityofDPSystems

M04/04

2004DPFMEA/FMECA

IMCA FMEAManagementGuideM178

2005DPFMEAmanagement

IMCAGuidelinesfortheDesignandOperationofDPVessels

M103Rev12007

Designphilosophies,DPFMEA,redundancy,annualDPtrials,checklists,DPoperations,communications,manuals,manning,training,DPcapabilityplots

IMCAStandardReportforDPVesselsAnnualTrials

M139

1997

ReportingformatforannualDPtrials,DPauditorcompetency

IMCAAGuidetoDPRelatedDocumentationforDPVessels

M109

Rev1,2004

DPoperationsmanual–TOC,DPdocumentation,vesseloperationsmanual,plannedmaintenance

IMCAInternationalGuidelinesfortheSafeOperationofDP

OSVs

M182

Rev1,2009

DPFMEA,annualDPtrials,checklists,manning,DPcapabilityplots,incidentreportingand

investigation,riskbasedapproachtoDPoperations

IMOGuidelinesforDynamicPositioning(DP)OperatorTraining

IMOMSC/738Rev1,2006

InternationallyrecognizedguidanceforDPOtrainingandexperience

IMCATheTrainingandExperienceofKeyDPPersonnel

M117

Rev1,2006

Training,experienceandcertificationrequirements,onboardFamiliarisationforkeyDPpersonnel

Nautical

Institute

TheNauticalInstituteDynamicPositioningOperator’sCertificate

January2010Revision

DetailedguidanceontheimplementationofNI’sinternationallyrecognizedDPOcertificationscheme





Source TitleRevisionNo.

andDateDPOperationsContent

IMCA StationKeepingIncidentFormforDPVessels

2008 IncidentreportformforDPvessels(DPconstruction,OSVs,etc.)

IMCAStationKeepingIncidentFormforDPTankers,FPSO,etc.

2006IncidentreportformforDPtankers,FPSOs,etc

IMCADPIncidentReports–AnnualSummaryandAnalysis–allyears

1994- onwardsUsefulanalysisandsummaryofDPincidentssubmittedtoIMCAbymembercompanyvessels

IMCASpecificationforDPCapabilityPlots

M140

Rev1,2000

DPcapabilityplots,worstcasefailure

IMCAGuidanceonSimultaneousOperations

M203

2010 Simultaneousoperations

IMCAGuidanceonOperationalCommunications

M205,D046

2010

Generalguidelines,divingoperations,liftingoperations

IMCAGuidelinesforAnnualDPTrialsforDPMobileOffshoreDrillingUnits

M191

2008

AnnualDPtrials,guidelinesforincrementalannualDPtrials

IMCACommonMarineInspectionDocument(CMID)

Issues

6and7

InspectionreportformatandTOCforinspection,inc.,DPsectioninIssue6

IMOInternationalSafetyManagement(ISM)Code

ISMCode

2002

Internationalstandardforthesafe

managementandoperationofshipsandforpollutionprevention


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