Dynamic Positioning System-mini

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1、DynamicPositioningSystemsWisonShipyard8Oct.2008Schedule•BasicdefinitionofaDPvessel•DNVDPclassnotations•Typicaloperationsvs.classnotations•DescriptionofDPSystems•FailuredefinitionsandRedundancyConcept•Documentation/Certification•EnvironmentalRegularityNumber(ERN)•FailureModesa

2、ndEffectAnalysis(FMEA)•TestsBasicdefinitionDynamicallypositionedvessel:SurgeAvesselwhichautomaticallymaintainspositionandheading(ortrack)bycontrollingtheYawthreehorizontalmotionsSway(surge,sway,yaw)exclusivebymeansofthrusterforce.Fig.1Surge,swayandyawmotionsofavesselIMOandcla

3、sssocietiesDPnotationsCorrelationIMO/ClassnotationsDNVIMOLRSABSAUTS---AUTClass1DPADPS-1AUTRClass2DPAADPS-2AUTROClass3DPAAADPS-3IMOandclasssocietiesDPnotations•DYNPOSAUTS:–Dynamicpositioningwithoutanyredundancy–Lossofpositionmayoccurintheeventofasinglefailure•DYNPOSAUT(Class1)

4、:AsforAUTS+–Independentjoystickbackupwithautoheading–Positioningreferencesystemback-up–UPSpowersupplyIMOandclasssocietiesDPnotations•DYNPOSAUTR(Class2):AsforAUT+–Redundancyintechnicaldesign=lossofpositionshallnotoccurintheeventofasinglefailureinanyactivecomponentorsystem.–Flo

5、odingandfirenotconsideredbeyondmainclassrequirements•DYNPOSAUTRO(Class3):AsforAUTR+–Singlefailuredefinitionextendedtoincludefloodinginanyonewatertightcompartmentandfireinanyonefiresub-division–BackupDP-controlsysteminaseparatecompartment,separateenginerooms,separatethrusterro

6、oms,separateswitchboardroomsetc..Typicaloperationsvs.classnotationDYNPOS-AUT(Class1):-Bowloading-Marineoperations>500mfromaninstallationTypicaloperationsvs.classnotationDYNPOS-AUTR(Class2):-Marineoperations<500fromaninstallation-Subseawellstimulation-Unmannedsubseainterventio

7、nswithROVTypicaloperationsvs.classnotationDYNPOS-AUTRO(Class3):-Criticalmannedsubseainterventions(diving)-Drilling/productionofhydrocarbonsDynamicPositioningSystemThecompleteinstallationonthevesselnecessaryfordynamicallypositioningavesselDynamicPositioningSystem•DPControlSyst

8、emAllcontrolsystemsandcomponents,hardwareandsoftwarenecessarytodynam