課件教程案例samss

MaterialsSystemSpecification

34-SAMSS-634 21December2005

LocalZVControlSystems

InstrumentationStandardsCommitteeMembers

Awami,LuayHussain,ChairmanTuin,Rienk,ViceChairmanBogusz,ZbigniewJozef

Dakhil,TareqKhalilDhafeeri,FarhanTaiehEll,StevenTal

Fadley,GaryLowellFalkenberg,AntonRaymondQaffas,SalehAbdalWahabGawargy,NabilErianGrainger,JohnFrancisJumah,YousifAhmedKhalifa,AliHussain

Madhi,FawazAbdullahMahmood,Balal

Qarni,MahdiAli

SaudiAramcoDeskTopStandards

TableofContents

1 Scope. 2

2 sandDeviations. 2

References. 2

EnvironmentalConditions 3

GeneralRequirements. 5

SmartZVLocalControlSystem. 5

LocalZVShutdownCabinets. 10

Installation. 10

ElectricalInstallation. 11

Nametes. 11

Drawings. 11

OtherMiscellaneousRequirements. 12

PreviousIssue:31March2004 Next nnedUpdate:1January2011

Revisedparagraphsareindicatedintherightmargin Page1of12Primarycontact:Flanders,PatrickScotton966-3-

Copyright?SaudiAramco2005.s .

Responsibility:InstrumentationIssueDate:21December2005

34-SAMSS-634

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nnedUpdate:1January2011

LocalZVControlSystems

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1 Scope

ThisspecificationcoverstheSaudiAramcorequirementsforlocalEmergencyIsolationValve(ZV)controlsystems.IncludedarerequirementsfortheESDsysteminput/outputchannels,thelocalcontrolpanel(LCP),andthesmartvalvecontrollerthatmakeupeachSmartZV.TheSmartZVassemblyprovideslocalcontrolandtestingfunctionalityforspringreturnanddoubleactingp aticvalveactuators.Functionalrequirementsareclarifiedincludingthe"partialstroke"featureprovidedforon-linetestingofZV's.

Alternativedesignsshallonlybeusedwhenpre-approvedbytheManager,ProcessandControlSystemsDepartment.

CommentaryNotes:

AllEmergencyIsolationValves(ZV's)arerequiredtobedesignedandinstalledsuchthattheycanbefunctionallytestedwhileon-line(in-service).Functionaltestingmaytaketheformofafull-stroketestora"partialstroke"test.

"Partialstroke"testingprovidesawaytoverifyZVperformancewhenfunctionaltestingisrequiredwhiletheZVison-line."PartialStroke"testingisnotintendedtotaketheceoffull-strokeZVfunctionaltests.Rather,"partialstroke"testingshouldbeperformedtomeettherequiredfunctionaltestinterval(e.g.,quarterly)betweenscheduledunitshutdownswhenfullstroketestingcanbeperformed.

2 sandDeviations

AnysbetweenthisspecificationandotherapplicableSaudiAramcoMaterialsSystemSpecifications(SAMSSs),EngineeringStandards(SAESs),EngineeringProcedures(SAEPs),StandardDrawings(SASDs)orindustrystandards,codes,andformsshallberesolvedinwritingbytheorBuyerRepresentativethroughtheManager,Process&ControlSystemsDepartmentofSaudiAramco,Dhahran.

DirectallrequeststodeviatefromthisspecificationinwritingtotheorBuyerRepresentative,whoshallfollowinternal procedureSAEP-302andforwardsuchrequeststotheManager,Process&ControlSystemsDepartmentofSaudiAramco,Dhahran.

References

ThefollowingSupplementarySpecificationsarereferencedbyandformapartofthisspecification.

SaudiAramcoReferences

SaudiAramcoEngineeringProcedure

SAEP-302 InstructionsforObtainingaWaiverofa

MandatorySaudiAramcoEngineeringRequirement

SaudiAramcoLibraryDrawings

DB-950129 LocalShut-DownCabinet(Conventional)

DA-950065 LocalShut-DownCabinet(LimitedTravelTest)DB-950106 SmartZV

SaudiAramcoInspectionRequirements

Form175-343100 InstrumentControlCabinets–Outdoor

SaudiAramcoFormsandDataSheets

FormNMR-7907 NonMaterialRequirementsforInstrumentation

(General)Form8020-634-ENG LocalZVControls

IndustryCodesandStandards

Thecabinetshallbedesignedandfabricatedinconformancewiththelatestrequirementsofthefollowing:

TheInternationalSocietyforMeasurementandControl–ISA

ISARP60.6 Nametes,LabelsandTagsforControlCenters

NationalElectricalManufacturersAssociation

NEMA250 EnclosuresforElectricalEquipment(1000Voltsum)

NEMAICS6 EnclosuresforIndustrialControlsandSystems

NationalFireProtectionAssociation

NFPA70 NationalElectricalCode

Whenlistingisavailable,allequipmentandmaterialsofconstructionshallbelistedfortheintendedservicebyUnderwritersLaboratories,Inc.(UL),FactoryMutualResearchCorporation(FM),orotherrecognizedtestinglaboratory.

EnvironmentalConditions

Temperature

ZVcabinetinstrumentsandcontrolcomponentsshalloperatecontinuously

underthefollowingambientairtemperatureswithoutanydegradationofthemanufacturer'sguaranteedperformance.

OutdoorSheltered(1)(2)(3)

OutdoorUnsheltered(2)(3)

um

55°C(131°F)

65°C(149°F)

Minimum

0°C(32°F)

0°C(32°F)

Notes:

"Sheltered"referstopermanent,ventilatedenclosuresorbuildings,orpermanentlyfixedsunshadeswithatopandthreesides.

Forinstrumentswhichdissipateinternalheatandareinstalledincustomengineeredenclosures(e.g.,enclosuresnotincludedintheoriginalmanufacturer'stemperaturecertification),anadditional15°Cshallbeaddedtotheaboveumtemperatures.Anexample,for"indoorairconditioned"installation,theequipmentmustperformat35+15=50°C.Similarly,forthe"outdoorunsheltered"case,theequipmentshallbedesignedforaumoperatingtemperatureof65+15=80°C.

Fortheoutdoorinstallationsonly,thedesignercantakecreditfordorpassivecoolingtoeliminateorreducethe15°Cheatrise.Forexample,ifvortexcoolersareused,theheatremovalcapacityofthecoolersmaybesubtractedfromthegeneratedheat.Nomorethan15°Creductionintemperaturewillbegivenascredit.Thedesignershallsubstantiatehibyprovidingthesupportdataandcalculations.

Humidity

Designbasisshallbe5%to95%relativehumidity(non-condensing).

Contaminants

Theinstrumentmanufacturershallensurethatallequipmentisdesignedtowithstandthefollowingairqualityrequirements.

CommentaryNote:

Air-bornedustconcentrationsandcontaminantlevelsareusedinmechanicalequipmentdesign,whensizingairfiltersandasameasureofpotentialdustingress.

DustConcentration

Usualairbornedustconcentrationis1mg/m3.Duringsandstorms,dustconcentrationsmayreach500mg/m3.Particlesizesareasfollows:

95%ofallparticlesarelessthan20micrometers50%ofallparticlesarelessthan1.5micrometers

Elementspresentindustincludecompoundsofcalcium,silicon,magnesium,aluminum,potassium,chloridesandsodium.Whenwetted(highhumidityconditions)thesecompoundsfunctionaselectrolytesandcanresultinseverecorrosion.

Otherpollutantspresentintheatmosphereunderthemostextremeconditionsare:

H2S 20ppm(Vol/Vol)

Hydrocarbon 150ppm(Vol/Vol)

SO2 10ppm(Vol/Vol)

CO 100ppm(Vol/Vol)

NOx 5ppm(Vol/Vol)

O3 1ppm(Vol/Vol)

Wind-borneSeaWaterSpray

Equipmentinstalledoffshoreornearshore(i.e.,within0.5kmfromshoreline),shallbesuitedfortheharshenvironment(NEMA4Xenclosure,316SSTexternals,hermiticallysealed,etc.).

GeneralRequirements

LocalZVControl

Eachp aticallyoperatedZVshallbeprovidedwithlocalcontrolsthatpermittheZVtobeoperatedintheeventofanemergencyandtobereturnedtothenormaloperatingpositionlocallywhentheemergencyconditionshavereturnedtonormal,tripinitiatorsarehealthy,andthelogicsystemhasbeenreset(ready-to-resetlightenergized).

LocalZVReset

ResettingtheESDsystemlogicviatheremotepushbuttoninthecontrolroomshallnotcausetheassociatedZV'stoautomaticallyreturntotheirnormaloperatingposition.Manual'local'operatorinterventionisrequiredtoverifyconditionsinthefieldpriortoresettingaZV,followingatrip.

Inhigh-pressureapplications(GOSPinlet,etc.),theESDsystemshallpreventtheZVfromopeninguntilthepressuredifferentialacrossthevalvehasreachedasafelevel(viadifferentialpressureESDinput).

SmartZVLocalControlSystem

TheSmartZVsystemshallbecomprisedofaLocalControlPanel(LCP),asmartvalvepositioner,solenoidvalves,anESDHARThandheldcommunicator(orequalcomputerbasedconfiguration),andassociatedESDI/Oasoutlinedinsection6.6andshowninLibraryDrawingDB-950106,Sheets1and2.Inaddition,whenrequestedbythe

proponent,HARTsignalsplitters/multiplexerswithintheESDsystemmarshallingcabinetsshallbeprovidedtofacilitateintegrationwithandvendorspecificvalvediagnosticsoftware.

LocalControlPanel(SmartZV)

EachSmartZVshallbeequippedwithalocalcontrolpanel(LCP)topermittheZVtobeoperatedlocallyintheeventofanemergency,tobereturnedtothenormaloperatingpositionwhenthetripinitiatorsarehealthy,andtofacilitatefunctionaltestingoftheZV.

SmartZVLCPPushbuttons

ASmartZVLCPshallincludethreepushbuttons:1)valveclose,

2)valveopen,and3)test.

Thelocalpushbuttonsshallbeshroudedtopreventunintendedactuation.

CommentaryNote:

TheSmartZVLCPpushbuttonsarecloselyintegratedwithESDsystemlogicandthecontrolelementsmountedonthevalve(smartvalvepositioner,solenoidvalves,andlimitswitches).

ValveClosePush-button

Amomentarycontactpushbuttontoclosethevalveshallbeprovided.ThelocalvalveclosepushbuttoncontactsshallopenonactuationandshallbehardwiredasadiscreteinputtotheESDsystem.TheESDlogicandoutputsshalldrivethevalvetotheclosedpositionwhenthelocalclosepushbuttonisactivatedattheLCP.

ValveOpenPush-button

Amomentarycontactpushbuttontoopenthevalveshallbeprovided.ThelocalvalveopenpushbuttoncontactsshallcloseonactuationandshallbehardwiredasadiscreteinputtotheESDsystem.TheESDlogicandoutputsshalldrivethevalvetotheopenpositionwhenthelocalopenpushbuttonisactivatedattheLCP.

TestPush-button

Amomentarycontactpushbuttontoinitiateapartial-stroketestshallbeprovided.Thelocaltestpushbuttonshallcloseon

actuationandshallbehardwiredfromtheLCPdirectlytothesmartvalvepositioner(shallinitiatetheuserdefinedpartialstroketestresidinginmemorywithinthesmartvalvepositioner).

SmartZVLCPIndicationLamps:

TheLCPshallincludea"ready-to-reset"indicationlamptoprovidelocalindicationwhentheZVmaybereturnedtothenormaloperatingpositionfollowinganESDsystemtrip.The"ready-to-reset"lampshallbepoweredviaadiscreteoutputfromtheESDsystem.

CommentaryNote:

Ready-to-Resetlight:ThelampshallilluminatewhenallrelevantESDinputsareinthehealthyconditionandthelogicsystemhasbeenreset.Thelampshallextinguishwhenthevalvemovesfromthefail-safeposition.

WhenspecifiedonForm8020-634-ENG,localZVopenandclosedvalvepositionindicationlampsshallbeincludedwithintheLCP.

LEDtypelightsshallbeprovided(e.g.,Stahl8010/2-01orequal).

ColorsusedshallbeOpen–Green,Closed–Red,andReadytoReset–Amber.

LightsshallberemovableandreceablewhiletheZVison-line(inservice).

LocalControlPanelTerminations

TerminalstripswithintheZVLCPshallbeadequaysizedtoalloweasyaccesstotheterminations(hinged"swing-out"spacesaver,doubleortriplegangtypeterminationsarenotallowed).

TheLCPenclosureshallbeadequaysizedtoalloweasyterminationofexternalcablesandincludespaceforthelayofconductors.

LocalControlPanelVent/Drain

Acombinationvent/drainfittingshallbeprovidedoneachLCP.

SmartValvePositioner

AZVwillbemade"smart"bytheintroductionofasmarectro-p aticvalvepositioneraspartofthevalveassembly(FisherRosemountDVC6000orapprovedequalwithexternalsolenoidvalve).

ThesmartvalvepositionershallbemountedontheZVactuatortofacilitateon-line,partialstroke(limitedtravel)testing,full-strokeout-of-servicetesting,andself-healthmonitoringviathesmartvalvepositionerdiagnosticsoftware.

Thepositionershallbeinstalledinserieswithsolenoidvalve(s).

ThesmartvalvepositionershallcommunicatewiththeESDsystemviaadedicated4-20maDC/HARThybridESDoutputchannel.Intheeventofatrip,thesolenoidvalvewillchangestate(de-energize)andthepositionersignal

(4-20mADC)shallbedriventotheuserdefinedvalue.

SmartValvePositionerMountingKit

EachSmartZVpositionershallbedwithanactuatormountingkitdesignedspecificallyforuseontheintendedactuator.Ea ountingkitshallincludeprovisionsforvalvepositionlimitswitches(valveopenandvalveclosed).Hermeticallysealedortotallyencapsulated,mechanicalswitchorproximitysensorpositionswitcheswithcontactsratedfortherequiredloadshallbespecified.

On-lineTesting

EachSmartZVshallbeequippedwithaLCPasdescribedaboveinSection6.1.Inadditiontotheopenandclosepushbuttons,a"valvetest"pushbuttonshallbeincludedtoinitiatethepredefinedpartialstroketest(residinginmemorywithinthesmartvalvepositioner).

InadditiontotheLCP"test"pushbutton,on-linetestingofaSmartZVmaybeinitiatedviaHARTprotocolusingalaptopcomputerwithvendorspecifiedvalvetestinganddiagnosticsoftware.Remotepartial-stroketestingofZVsmayalsobe plishedbyusing'HART'multiplexedexternaloutputterminationmodulesorassemblieswithanassociatedZVmaintenanceworkstation.

CommentaryNote:

TheselectionandloadingoftheMultiplexersandHARTfiltersdwithESDmarshallingterminationstointegratethehybridHART og4-20mAsignaltothesmartvalvepostioner,shallbeguaranteedbytheESDvendorforproperoperationwiththeESD ogI/Ocardandthesmartvalvepositioner.

SolenoidValve(s)

ThesolenoidvalvesutilizedwithSmartZV'sshallbeelectro-p aticdirectoperatingorexternalpilottype(capableofoperatingwithoutapplieddifferentialpressure).Theyshallbeusedtopressurize/venttheactuatorinresponsetoanESDtripinafail-safearrangementwiththesmartvalvepositioner.AllsolenoidvalvesshallbespecifiedwithVitoninternals.

ReferenceLibraryDrawingDB-950106,Sheet1and2fortheEmerson/FisherDVCbasedSmartZVarchitecture.

ESDI/O

TheSmartZVisanintegrationoflocalcontrolsmountedontheZV(smartvalvepositioner,solenoidvalves,limitswitches,etc.),theLCP,andESDsystemI/Oandlogic.TheESDI/OrequiredtointegrateaSmartZVissummarizedinthetablebelow.

SmartZVESDI/ORequirements

ESDInputs/Outputs

Type

Description

DiscreteInput-1

LimitSwitch-ZVvalveopen

UsedwithinESDlogictomonitorZVposition.

DiscreteInput-2

LimitSwitch-ZVvalveclosed

UsedwithinESDlogictomonitorZVposition.

DiscreteInput-3

Pushbutton–ZVvalveopen

ThispushbuttonislocatedontheLCP.

DiscreteInput-4

Pushbutton–ZVvalveclose

ThispushbuttonislocatedontheLCP.

DiscreteOutput-1

SolenoidValve(s)

Provideshighvalveflowcoefficient(Cv)tomeetZVclosuretimerequirementandprovidestheprimaryESDfunction.

Note:ThesmartvalvepositionerwillalsomovethevalvetothefailsafepositionshouldthesolenoidfailtooperateduringanESDtrip.

OndoubleactingZV'swheretwosolenoidsareused,andtheyarebothcontrolledbythisone(1)ESDoutput.

DiscreteOutput-2

IndicationLamp-ReadytoReset(Ambercolor)

ThisIndicationLampislocatedinthelocalcontrolpanel(LCP).

ProvideslocalindicationattheZVwhentheESDhasbeenresetinthecontrolroomandallpermissivesaremet.OnlythenmaytheZVbesafelyreturnedtothe"normaloperatingposition."

DiscreteOutput–3OPTIONAL

IndicationLamp–ValveOpen(Greencolor)

ThisindicationLampislocatedinthelocalcontrolpanel(LCP).

ProvideslocalindicationattheZVwhenthevalveisfullyopen(viahardwiredlimitswitchtoESDdiscreteinput).

Responsibility:InstrumentationIssueDate:21December2005

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ESDInputs/Outputs

Type

Description

DiscreteOutput–3OPTIONAL

IndicationLamp–ValveClosed(Redcolor)

ThisindicationLampislocatedinthelocalcontrolpanel(LCP).

ProvideslocalindicationattheZVwhenthevalveisfullyclosed(viahardwiredlimitswitchtoESDdiscreteinput).

ogOutput–1

ZVpositioner

ogoutput(4-20mA)toSmartValvePositioner.

ThissignalprovidesabackupmeanstodrivetheZVtothefail-safepositionshouldtheprimaryESDdevice(solenoidvalve)failtofunction.

MultiplexedESDI/OisrequiredtoutilizeHARTdiagnosticinformationavailabletoaValvLinkworkstation.

Field'Test'Pushbutton

Type

Description

LocalControlPanelZV"Test"Pushbutton

Pushbutton–InitiatePartialStrokeTest

LCPZVTestpushbuttonishardwireddirectlytothesmartvalvepositioner.

LocalTestpushbuttoninitiatesthepredefined"partialstroke"test.Thesmartvalvepositionersavesthemostrecentvalvetestsignature.

LocalZVShutdownCabinets

WhenSmartZVlocalcontrolsarenotsuitedtotheapplication(e.g.,gasoperatedvalves),localZVshutdowncabinetsshallmeetthedesignrequirementsofthisspecification,SaudiAramcoForm8020-634-ENG,andtheapplicableSaudiAramcoLibraryDrawing(DB-950129orDA-950065).

Alternativedesignsshallonlybeusedwhenpre-approvedbytheManager,ProcessandControlSystemsDepartment.

Installation

Tubingshallbeseamless,316stainlesssteel.Theminimumtubesizeshallbe?inch(12.7mm)O.D.andhaveaminimumwallthicknessof0.03inch(0.75mm).

Exception:

Non-flowingp atictubingsuchaspilotoperatedsolenoidvalveimpulselinesmaybe?inch(6.35mm)O.D.

Fittingsshallbe316stainlesssteelcompressiontypeSwagelok,Parker,orequal.Threadedconnectionsshallbesealedusingpaste.

Tubingshallbebentusingatubingbender,reamedandinternallycleanedpriortoinstallation.

Pressuregaugesindicating ingsupplypressureandoperatingpressuretothevalveactuator(openandclosedsideofdualactingandopensideofsingleactingactuators)shallbeprovidedinSIorEnglishunitsconsistentwiththeunitconventionusedintheintendedntlocation.

ElectricalInstallation

AllmaterialsandequipmentshallmeetNFPA70,NationalElectricalCoderequirementsfortheintendedhazardousareas.

Allcomponents(solenoidvalves,limitswitches,indicationlights,etc.,shallbecertifiedforuseintheintendedhazardousareabyanapprovedtestingagencywithouttheneedforanyadditionalexternalprotection.BothEExandAExCertifieddevicesareacceptable.

ElectricalwiringandinstallationshallconformtotherequirementsoftheNFPA70,NationalElectricalCode,latestedition.WiringinternaltotheLCPandlocalZVshutdowncabinetshallbe18AWGminimum.

Wireendsshallconnecttopolyamideterminalswithinthecabinet.TerminalmakeshallbeKlippon,Weidmuller,orequal.

Nametes

NametesshallfollowISARP60.6guidelines.

AllinstrumentsmountedinsidelocalZVshutdowncabinetsorassociatedwithSmartZVsystems,shallbeidentifiedbyanameteincludingthetagnumberandservicedescription.

Thenametesshallbeattachedwithstainlesssteelscrewsorstainlesssteelwire.

Nametesshallbem