裝卸臂技術(shù)規(guī)格書(shū)英文版

MARITIMETERMINALOF

PETROCHEMICALCOMPLEX

TechnicalSpecificationofLoadingArms

(CNO:13303)

(CLIENTNO:11)

ChinaH.()

September,2023

Issuestatus:

0C

Sep.2023

2023

FORAPPROVAL

Rev.

Date

Description

Prep’d

Chk’d

Rev’d

App’d

CONTENTS

TOC\o"1-2"\h\z\u

1 GENERAL

1

1.1 FIELDOFAPPLICATION

1

1.2 DEFINITIONOFITEMS

1

2 REFERENCEDOCUMENTS

3

2.1 APPLICABLECODESANDSTANDARDS

3

2.2 APPLICABLEPROJECTDOCUMENTS

3

2.3 EXCEPTIONSTOREFERENCEDOCUMENTS

4

2.4 DOCUMENTSORDEROFPRECEDENCE

4

3 SCOPEOFSUPPLY

5

3.1 EQUIPMENTSUPPLY

5

3.2 EXCLUSIONS

7

3.3 BOUNDARYLIMITS

8

3.4 ERECTIONWORKS

9

4 INSTALLATIONDATA

9

4.1 SITELOCATIONANDENVIRONMENTALCONDITIONS

9

4.2 AREACLASSIFICATION

9

5 GENERALSERVICECONDITIONS

9

5.1 PROCESS

9

5.2 OPERATINGANDDESIGNCONDITIONS

9

6 DESIGNANDCONSTRUCTION

10

6.1 MATERIALS

10

6.2 DESIGNREQUIREMENTS

10

6.3 SWIVELJOINTSANDSTRUCTURALBEARINGS

12

6.4 QUICK-CONNECT/DISCONNECTCARGOCOUPLERS(QCDC)

13

6.5 SPOOLPIECES

13

6.6 POWEREDEMERGENCYRELEASECOUPLINGS(PERC)

14

6.7 ACCESSORIES

15

6.8 OPERATINGANDCONTROLSYSTEMDESIGN

17

6.9 PAINTING,MARKING,PACKINGANDPREPARATIONFORSHIPMENT

21

7 INSPECTIONANDTESTS

21

7.1 MATERIALS

21

7.2 FABRICATIONCONTROLS

21

7.3 SHOPTESTS

23

7.4 SITETESTS

25

7.5 CERTIFICATIONTESTS

26

8 CRITERIA

26

8.1 LEAKAGE

26

8.2 PRESSUREDROP

26

8.3 CONSUMPTIONSOFSTEAM

26

8.4 LOADSONSHIPCROSSOVERFLANGES

26

9 Guarantee

27

GENERAL

ThisspecificationcoverstheminimumrequirementsforMarineLoadingArmsforuseinliquidammoniaandmoltensulfurserviceincludingdesign,manufacture,assembly,control,shoptests,sitetestsandperformances,tobeinstalledintheMARITIMETERMINALOFMORONPETROCHEMICALCOMPLEX.Therequirementsforquickconnect/disconnectcouplers(QCDC),poweredemergencyreleasecoupling(PERC)andloadingarmcontrolpowersystemsarealsocovered.Inadditiontothedescriptioninthisspecification,relatingdatasheets,drawings,specifications,codesandstandardsshallbereferredtoconductthedesign.

Itshouldbenotedthatthisspecificationisnotintendedtoprecludetheuseofnewmaterials,designsortechniqueswhichcanbedemonstratedtobesuitablefortheintendedservice.

ThisspecificationisacontractualdocumentbetweenPURCHASERandSELLER.ItdefinestheequipmentandservicesincludedintheSELLERscopeofsupply.

ThisspecificationisderivedfromOCIMF(OilCompaniesInternationalMarineForum)“Design&ConstructionSpecificationforMarineLoadingArms”.Thedesign,manufactureandtestingoftheMarineArmsshallbeinfullcompliancewiththisspecification.

Sellershalladviseequipmentloadrequirementsinthetechnicaltenders.

FIELDOFAPPLICATION

Liquidammoniaarmitem120-00-0-LA-01isintendedtotransferliquidammoniafromtheonshoretanktotheshiptanks.Liquidammoniaarmisconnectedviaashutdownvalvetothemainammoniapipeline.Thisarmshouldhavevapourreturnpipelinetoreturnthevapourtothevapourreturnpipeline.

Themoltensulphurarmitem120-00-0-LA-03isintendedtotransfermoltensulphurfromshiptoonshore.

DEFINITIONOFITEMS

OCIMF

OilCompaniesInternationalMarineForum

IEC

InternationalElectrotechnicCommittee

PERC

PoweredEmergencyReleaseCoupling

ERS

EmergencyReleaseSystem(includesthePERC).

QC/DC

QuickConnect/DisconnectCoupler.

JETTYCONTROLROOM

LocalControlRoomonJetty

"MarineArms",asusedinthisspecification,shallmeanallmetalselfsupportedmarineloadingorunloadingarmswitharticulatedswiveljointsinclusiveof,wherespecified,quickconnect/disconnectcouplers,powersystem,operationcontrols,rangecontrolsystem,purgesystem,spoolpieces,emergencyreleasesystem,monitoringtoolsandjacks,ifrequired.

The"OperatingEnvelope"forasingleloadingarmisthatvolumeinspace,requiredtooperatetheunitforalloftheshipsmanifoldlocationsbasedon:

elevationchangesfortide,draftorship’sheaveduetowaveaction,

changesinhorizontalpositionduetoshipswayandsurge,

maximumandminimummanifoldspacingwhenoperatingsimultaneouslywithotherloadingMarineArms,

singlearmoperation.

The"RatedTemperatures"oftheMarineArmor,ifapplicable,partsthereof,aretherangeoftemperaturesestablishedbytheextremesof:

thetemperaturerangeofcargotemperaturesduringoperations,

therangeofarmtemperaturesduetoambientconditionsresultingfromambienttemperaturesandsolarradiationheat.

REFERENCEDOCUMENTS

APPLICABLECODESANDSTANDARDS

Inparticular,followingcodesandstandardsformpartofthisspecification:

ASMEB31.3:PressurePiping.

ASMEB36.10:Weldedandseamlesswroughtsteelpipe.

ASMEB36.19:StainlessSteelPipe.

ASTMforthelistedmaterial.

ASMEcode,sectionV:Non-destructiveExamination.

ASMEcode,sectionVIII,division1:RulesforConstructionofPressureVessels.

ASMEcode,sectionIX:WeldingandBrazingQualifications.

OCIMF:DesignandConstructionSpecificationforMarineLoadingArms.

IEC34.Ratingandperformanceofelectricmotors–Applicabletomotoroperatedvalves

IEC73.Colorofindicatorlights,pushbuttons,annunciatorsanddigitalreadouts.

IEC529.Degreesofprotectionprovidedbyenclosures.

IEC584.Internationalthermocouplereferencetables

IEC617.GraphicSymbolsforelectronicdiagrams

ISASS-1.InstrumentationinSymbolsandIdentification

Unlessstatedotherwise,onlythelatesteditionsoftheabovementionedlaws,regulations,codesandstandardsshallbeused.

APPLICABLEPROJECTDOCUMENTS

13S030301AMMONIALOADINGARMDATASHEET.

13S002SULFURUNLOADINGARMDATASHEET

13S00101BERTH-2EQUIPMENTLAYOUT

13S0306EngineeringSpecificationforPainting

13S007EngineeringSpecificationforHotandPersonnelProtectionInsulationDesign

13S008EngineeringSpecificationforColdandAnti-sweatInsulationDesign

13S0002EngineeringSpecificationforPipingMaterials

13S001P&IDFORAMMONIALOADING

13S02P&IDFORSULFURUNLOADING

EXCEPTIONSTOREFERENCEDOCUMENTS

ItshallbetheSELLERresponsibilitytocheckthatthedesign,purchase,manufacture,assembly,control,testandcertificationofallitemsincludedinthesupplyareinconformitywiththerequirementsofdocumentslistedintheApplicableDocuments.

Foreachapplicabledocument,SELLERshallsubmittoPURCHASER/OWNERforreviewalistofdeviationstospecifications,otherwisethesupplyshallbeconsideredasfullycomplyingtospecifications.Thislistofdeviations,ifany,shallbeperiodicallyup-datedduringtheperformanceofthecontract.

WhenSELLER'sinternalstandardisequivalenttorelevantspecification,itmaybeproposedforPURCHASER/OWNERreviewandfinalapprovalbyOWNER.

DOCUMENTSORDEROFPRECEDENCE

Anyconflictsbetweentherequirementsofthisspecification,relatedspecificationsanddrawingsetc.,shallbereferredtothePURCHASER/OWNERforclarificationbeforeproceedingwiththemanufactureorprocurementoftheaffecteditem.NothingcontainedinthisorrelatedspecificationsshallbeconstruedasrelievingtheSELLERoftheresponsibilityfordesigningandconstructingtheequipmenttomeetthespecifiedconditions.

SCOPEOFSUPPLY

EQUIPMENTSUPPLY

TheSELLERshallsupplyallequipmentandmaterialsnecessaryforthecompleteinstallationofMarineArmsenablingshipstobesafelyandcontinuouslyloadedorunloaded.

SELLERshallalsoberesponsibleforsitesupervisionoferection,pre-commissioning,commissioning,startupandperformancetesting.TheSELLERshallsupplyMarineArmsinthequantityandwithcharacteristicsspecifiedinthedatasheet.

Theextentofsupplyshallincludebutnotlimitedtothefollowing:

TheMarineArmscompletewithbaseandrisers(includinganchorbolts,baseplatetemplate,swiveljointsandcounterbalanceweights).

Thevolumetricratio

AllnecessarydocumentationtodemonstratetothePURCHASER,theOWNERandGovernmentDepartmentsthatthedesign,materials,fabrication,erectionandcontrolsatisfythespecificationsandstatutoryrequirements

Allinstrumentationandcontrolsincludinglocalcontrolpanel,portableremoteradiocontrolunit,controlcabinetsandlicensedsoftwareforPLCmaintenance

Visualisationsystem,ifrequiredindatasheet

Allinterconnectingwiring,cables,cabletrays,etc.

Allrequiredhydraulicsystemsincludingpowerpacks,accumulatorscylinders,etc.

Allinterconnectinghydraulicpipework,valvesetc.

JacketsteamtracingandinsulationformoltensulphurMarinearm.

Quickconnect/disconnectcargocouplers(QCDC).

Couplingspoolpiecestosuitshipmanifoldsofspecificsize

Poweredemergencyreleasecouplings(PERC)withemergencyblockvalvesforammonialoadingarm.

Completeaccess/supportstructureincludingallladders,platforms,stairwaysetc.

Shopfinishpainting,galvanising,passivefireprotectionandinsulation.

Supportjack(adjustable)attripleswiveljointfortheshipmanifoldinterface(ifrequired).

Straycurrentprotectors.

Inspectionandtesting.

Packingandpreservation.

Liftingbeams,spreaderbeamsandslingsforinstallationoftheequipment(ifrequired).

Stormlocks

Blindflanges/coverstosuitQCDCcoupling.

DummyflangesforERStestingandmaintenance.

Acompletesetofallspecialtools,etc.,requiredfortheinstallation,maintenanceandrepairofanyequipmentinthesupply.

Initialfillofhydraulicoilandanynecessarylubricant.Plusanyspecialfluidetc,requiredforflushingthehydraulicsystemduringcommissioning.

1"nitrogenpurginglineconnectedtoarmequippedwithonecheckvalve.

Groundingandearthingfacilities.

Weathercoverforlocalcontrolpanel.

Identificationplates.

Sparepartstocoverprecommissioning,commissioningandstart-upperiod.

2yearsoperationalspares

Trainingofoperators

CivilguideengineeringactivitiesforthedesignbyPURCHASERoftheconcretesupports.

InadditionthefollowinginformationshallbeincludedintheSELLERSbid:

MarkedupPURCHASERSDataSheets

G.A.drawings.

Pressuredropcurveswithsupportingtableofdata.

Vendoristosupplydetailedoperatingenvelope

EXCLUSIONS

Concretefoundations

Erectionworks

Plantlighting/earthing.

ElectricalpowersupplyincludingUninterruptedPowerSupply(UPS)andwiringtoSELLERSsuppliedterminalboxes.

Pipeworkandpipinguptoloadingarmrisersanddrainconnections.TheSELLERshalllocatetheseitemslocaltograde.

JettyControlRoomandCentralControlRoom.

ControlcablingfromthelocalcontrolpaneltotheunitcontrolpanelintheJettycontrolroom.

Localstop/startpush-buttonstationsforeachmotor.

Motorstartersandisolators.

CableglandsforcablessuppliedbySELLER.

BoltingandgasketsforflangedconnectionsatSELLER/PURCHASERinterfacepoints.

LightningprotectionofJettyequipment.

BOUNDARYLIMITS

TheMarineArmsaremountedonverticalcolumnsmountedontheJetty.Thepipingboundarylimitforeacharmisattheflangeconnectionattheelevationabovetheoperationplatform.Thestructuralboundarylimitisattheundersideofthecolumnbase.

TheHydraulicPowerPacksandlocalgrademountedjunctionboxesarelocatedatthebaseoftheverticalcolumn.Theelectricalandinstrumentboundarylimitsareatterminalslocatedinthelocaljunctionboxesforthecablesfromjettycontrolroom.Thestructuralboundarylimitislocatedattheundersideofthepowerpackbaseplate.

TheMarineArm/shipboundarylimitisdefinedbytheoperatingenvelopeandtheflangeconnectionwhichinterfaceswiththeshipmanifoldconnection.

TheLocalControlPanelwillbelocatedontheoperationplatform.TheelectricalandinstrumentboundarylimitsareattheterminalslocatedintheLocalControlPanelforthecablesfromjettycontrolroom.Thestructuralboundarylimitislocatedattheundersideofthecontrolpanel.

TheUnitControlPanelwillbelocatedintheJettyControlRoom.TheelectricalandinstrumentboundarylimitsareattheterminalslocatedintheUnitControlPanel.Thestructuralboundarylimitislocatedattheundersideofthecontrolpanel.

ERECTIONWORKS

EquipmentshallbedeliveredbySELLERwithasmuchprefabrication/assemblyworkcompletedaspossibleinordertoreducePURCHASERSerectionworks.

INSTALLATIONDATA

SITELOCATIONANDENVIRONMENTALCONDITIONS

Referto"LoadingArmDataSheets"。

AREACLASSIFICATION

MarineArmsarelocatedinhazardousarea.Seeequipmentdatasheetsforclassification.

GENERALSERVICECONDITIONS

PROCESS

MarineArmsareintendedfortransferofthecargobetweenshipandonshorestoragetanks.

Liquidammoniaarmisintendedtotransferliquidammoniafromtheonshoretanktotheshiptanks.

VapourreturnpipelineofLiquidammoniaarmisinternedtoreturnthevapourtothevapourreturnpipeline.

Themoltensulphurarmisintendedtotransfermoltensulphurfromshiptoonshore.

OPERATINGANDDESIGNCONDITIONS

RefertoMarineArmsPackageDatasheets.

DESIGNANDCONSTRUCTION

MATERIALS

ASTMmaterialspecification,orequivalent,shallbeproposedbytheSELLERforreviewandapproval.Thefollowingmaterialsshallbepreferablychosen:

Incontactwithammonialiquid&vapour:(A333Gr.6)

Incontactwithmoltensulfur:(A106Gr.B)

Hydraulictubing&fittings:Type304LorType316L

AluminiumshallnotbeusedfortheMarineArms.

SwiveljointsandfluidcarryingpartsofcouplersshallbeconstructedofmaterialswhichdonotcausegalvanicactionwiththepipeusedintheMarineArm.

Thesealringmaterialshallbesuitableforthefluidtobepumpedandforexposuretoambientanddesigntemperature.

AllexposedpartswhichmoverelativetoeachotherforthefollowingMarineArmcomponentsshallbecorrosionresistanttomarineatmosphere,particularly:

manualblockvalvesinthehydraulicsystem,

hydrauliccylinderandmotors,

Swiveljoints

Purgingconnections.

DESIGNREQUIREMENTS

General

Allequipmentshallbedesignedforaminimumdesignlifeof25years.SELLERshouldprovidealistoftheanticipatedmajorcomponentsrequiringreplacementtofulfilthisrequirement.

MarineArmsandancillaryfacilitiesshallbedesignedtohavesufficientresistanceforthevariousloadscombinationsspecifiedinthisspecification.

Allcomponentsshallbefullyproveninfieldservice.

ThestructuralpartoftheMarineArmsshallbeindependentoftheproductcarryingpipe.

Layoutandarrangement

ThedesignshallbesuchthatMarineArmscanbefullyopenedatfullcapacity.

MarineArmlengths,workingrange,clearancesandlocationofthetrunnionswivel-jointconnectionshallberesolvedbytheSELLER,basedontheoperatingenvelopedeterminedonthebasisofthedesigndatagiveninthedatasheets.

LengthsandclearancesshallbedefinedonthebasisthatMarineArmsmaybeoperatedsinglyandincombination,asindicatedinthedatasheet,forbothmaximumandminimummanifoldspacingasspecified.

Clearancesshallnotbelessthanfollowingvalues:

0.30mminimumclearancebetweenanypartofanoperatingMarineArmandfixedobjects,

0.60mminimumclearancebetweenanypartsofadjacentMarineArms.

Adiagramforworkingrange(withalarmsteps)shallbefurnishedbytheSELLER.

InthestoredpositionnoportionofthearmshallextendbeyondtheUnloadingplatformface.

TherangeofMarineArmmovementsshallallowtheoutboardjoint(tripleswivel)tobepositionedontheplatformformaintenanceallowingaminimumof1mclearspacearoundtheoutboardjoint.

Laddersandplatformsshallbeprovidedforaccesstothetrunnionandapexswivelsunlessspecifiedotherwiseinthedatasheet.Maintenanceaccessandladderswithsafetydevicealongrisersandinboardarmshallbeprovided.

Stressanalysis

SELLERshallanalysestressesanddeflectionsintheMarineArmandshipmanifoldsinallappropriatearmconditionsandspecifiedcounterweight.

Transientthermalstresses

Whenspecifiedinthedatasheet,inadditiontothestressanalysesundersteadythermalloads,SELLERshallperformastudyofthermalstressesintransientconditionsduringMarineArmscoolingdownoperations.

Thermalstressesintransientconditionsshallnotexceedthe"AllowableStressforThermalShocks"(ASTS).Thermalstressesshallbeanalysedasfollows:

Whenthegeometryoftheequipmentorofoneofitscomponentswhichcanbetreatedindependentlyfromtheunit,issimpleie.incaseof"thinshell"typestructures,itisacceptable,onthebasisofasimplifiedhypotheses,tofindananalyticalsolutiontotheequationsgoverningtheevolutionofthermalstresses,

Whentheequipmentgeometryiscomplex,itisrecommendedthatthethermalstressesareacalculationusingtheFiniteElementMethod.

Itisrecommendedthatcalculationresultsbevalidatedagainstmeasurements,orbycomparison,withaknownsolution.

SWIVELJOINTSANDSTRUCTURALBEARINGS

Liquidammoniaswiveljointshallbecartridgetype.

Whenlubricated,structuralswiveljointsshallbecapableofbeinglubricatedwithoutdismantling.Lubricationpointsshallbereadilyaccessibleinboththestoredandmaintenancepositions.Alubricantreliefportshallbeprovidedtosafeguardagainstoverpressurisation.

Exceptfortheoutboardjoint(triple)swivel,allswiveljointassembliesshallhavedevicestopermitrepackingwithoutdismantlingmajorsectionsofMarineArms.

Theswiveljointsshallhaveballorrollerbearings.

Theoutboardjoint(triple)swivel,whererequired,includingsupportdevice,couplerandvalving,shallbebalancedsothattheoutboardflangeremainsintheverticalplaneforallMarineArmattitudes.

Swivelsforliquidammoniaserviceshallbedesignedsothatexternalwatercannotpenetrateandfreezeinthejointsbetweenrotatingpartsoftheswivel.

SwiveljointsmechanicaldesignshalltakeintoaccountthesafetyfactorsdefinedbyPara.5.5and5.6ofOCIMF"DesignandConstructionSpecificationforMarineLoadingArms".

QUICK-CONNECT/DISCONNECTCARGOCOUPLERS(QCDC)

MarineArmsshallbeequippedwithQuickConnect/DisconnectCouplersforshipconnectionsasspecifiedintheMarineArmPackagedatasheets.

Minimum/maximumclosuretimesoftheQCDCcouplershallbeasperOCIMFTable11.

Aligningandcentringdevicesshallbefurnishedbasedonsizesoftheflangestowhichthecoupleristoconnect.

TheflangeratingoftheQCDCcouplershallbeASMEClass150.TheQCDCcouplershalladapttootherthanASMEflanges.

TheQCDCcouplershallholdaflangecovertopreventingressofdirtandwaterwhentheMarineArmisdisconnected.ThiscovershallremainattachedtotheQCDCcoupler(whentheQCDCcouplerisopenedaccidentally),butneednotbedesignedtowithstandtheloadingarmfluiddesignpressure.

LubricationofallmovingpartsshallbepossiblewithoutdismantlingtheQCDCcoupler.

ThestrengthoftheQCDCcouplershallbebasedonPara.6.5ofOCIMF"DesignandConstructionSpecificationforMarineLoadingArms".Thedesigngaugepressureshallbethemaximumof19kg/cm2orthespecifieddesignpressure.

SPOOLPIECES

SpoolpiecesshallbesuppliedbytheSELLERtoallowconnectionofMarineArmstovariousshipmanifoldconnections.

POWEREDEMERGENCYRELEASECOUPLINGS(PERC)

TheAmmoniaLoadingArmshallbeequippedwithahydraulicallypoweredemergencyreleasecoupling(PERC)neartheoutboardendoftheArmfittedbetweentwoballvalveshydraulicallyoperated.

ThePERCshallpermitacleanandsafeseparationoftheAmmoniaLoadingArmfromtheshipmanifold.ItisacceptablethatthesectionofthetripleswiveloutboardoftheemergencyreleasecouplingremainsattachedtotheShipmanifold,toberecoveredlater.

Accumulatorsorotherhydraulicmeansshallbeprovidedtoenableemergencyreleaseintheeventofelectricpowerfailure.

Intheeventofhydraulicorelectricpowerfailure,thePERCshallfailsafeandremainsecurelyclosed.

ThePERCshallbeautomaticallyactivatedwhenthearmreachesbeyondthelimitsoftheworkingrangereducedbyasafetymarginspecifiedinthedatasheet.ProvisionshallbemadeinthecontrolsystemtomoveautomaticallyandtoholdallMarineArmsclearoftheShipdeckandsideonactuationofthePERC.

ThePERCshallbecontrolledfromthejettycontrolroom,designatedoutsidecontrolpointsandbyhardwiresignalfromterminalESDsystem.

Thecontrolshallbeprotectedagainstaccidentaloperation(e.g.bysafetypinorcover).Thereshallbenoadditionalmanualmeansavailablefortriggeringthereleaseoftheemergencyreleasesystem.

ThearrangementofthePERCattheoutboardendofthearmshallbesuchthatthePERCandarmcomponentsremainingontheShipafteremergencyreleasewillnotfallontheShipdeckormanifoldserviceplatform.

ThehydrauliccylinderoperatingtheemergencyreleasethePERCshallbedoubleacting.

ThestrengthoftheERSshallbebasedonPara.7.1.21ofOCIMF"DesignandConstructionSpecificationforMarineLoadingArms".Inthiscase,thedesigngaugepressureshallbethemaximumof19kg/cm2orthespecifieddesignpressure.

DuringthereleaseoftheEmergencyReleaseCouplingthehydraulicpowersystemshallautomaticallyblocktheslewingmovementoftheMarineArmsduetowindloadandconsequentlypreventcollisionofthedisconnectedMarineArms.

HydrauliccircuitforPERCcontroltobeequippedwithamanualoperatedlockingvalveinstalleddirectlyattripleswivelassemblytobeopenedattimeofconnectionandclosedattimeofdisconnection.Acontrolswitchistobeprovidedtodetectitsposition.

Positionclosed:ThemanoeuvringoftheMarineArmispossible.DisconnectionofthePERCduringmanoeuvringorrestpositionoftheMarineArmisnotpossible.

Positionopened:Freewheelisactivated,thedisconnectionofthePERCispossibleincaseofemergencyafterclosingoftheballvalves.

Thetrappedvolumebetweentheballvalvesshallbeminimisedtolimitthespillincaseofrelease.

ValvesshallbefiresafecertifiedinaccordancewithAPI607,ISO10497orBS6755andbesuitablefortheservice.HydraulicpipingshallcomplywiththefireproofingrequirementofISO10497orequivalent.

TheERSdoubleballvalvesshallbehydraulicallyactuatedandthedesignclosuretimeshallbe5

seconds,unlessotherwisespecifiedinthedatasheet.

ThecompletedisconnectionsequencefrominitiationtodisconnectionofthePERCshallnotexceed7seconds(SELLERtoconfirm)witha5secondsvalveclosuretime,unlessotherwisespecifiedindatasheet.

ThePERCreleasemechanismshallbeabletoensurecleanseparation,break-outofanyiceformation,andshallbecapableofbeingremovedfromtheShipandreassembledinthecoldcondition.

ACCESSORIES

Stormlocks

AmechanicaltiedowndeviceremotelycontrolledmanuallyshallbeprovidedtokeeptheinboardMarineArmfrommovinginthestoredpositionduringhighwinds.EithermechanicalorhydrauliclocksshallbeprovidedtorestrictmovementofoutboardMarineArminthestoredposition.Hydrauliclockingshallbeaccomplishedbyusingseparatedmanualvalvesandnotthesystemcontrolvalves.

InthestoredandmaintenancepositionstheentireMarineArmshallbelockedagainstslewing.

ThestoredpositionlockingmechanismshallbedesignedtopreventthepossibilityofthemechanismengagingwhiletheMarineArmisintheoperatingmode.

Supports(Jacks)

PermanentlyattachedadjustablesupportshallbeincludedonallMarineArmswherethemanifoldstressesexceedthelimitsdefinedinstressanalysis.

ThemountingofthesupportontheMarineArmshallbesuchthatthesupportisfreetomovewiththepitchingmotionoftheShiptowhichthearmisconnected.

Straycurrentsprotectors

InsulatingflangesshallbeinsertedneartheoutboardendoftheMarineArmtoelectricallyisolatetheShipfromtheMarineArm.Theflangefaceshallnotbeinapermanentverticalorientation.Insulatingmaterialsusedshallensurethattheflangesareimpervioustomoistureandarecompatiblewiththeproductpropertiesandtemperaturesinvolved.

Thegasketusedintheinsulatingflangesshallprojectapproximately3mmintotheboreoftheflange.Theannularspaceattheflangeoutsidediametershallbefilledwithnonconductivematerialandthenwrappedtopreventpenetrationofmoisture.Paintshallnotbridgetheflangeannularspace.

Theelectricalresistanceoftheinsulatingflangeshallbegreaterthan10

000ohm,measuredbeforeandafterMarineArminstallation,betweentheshoresideflangeandtheoutboardendoftheMarineArmwhenfreelysuspended.

ThePURCHASERshallspecifyamethodofmeasuringtheelectricalresistance.

Afterhydrostatictesting,installationandinoperation,theresistanceshallnotbelessthan10,000oh