Z084003430SPC003 Process Measurement Instruments.docx
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Z084003430SPC003ProcessMeasurementInstruments
KOREANATIONALOILCORPORATION
BLACKGOLDOILSANDSPROJECT
IMVPROJECTNO.Z08400
PROCESSMEASUREMENTINSTRUMENTS
INSTRUMENTATIONSPECIFICATION
B
03/10/08
IssuedforDesign
DB
A
09-MAY-08
IssuedforApproval
DB
REV.
NO
DATE
REVISIONDESCRIPTION
ORIGINATOR
CHECKED
APPROVED
TableofContents
1.0SCOPE3
2.0REFERENCES3
3.0FLOWINSTRUMENTS8
4.0PRESSUREINSTRUMENTS12
5.0LEVELINSTRUMENTS13
6.0TEMPERATUREINSTRUMENTS16
1.0
SCOPE
Thescopeofthisspecificationistoestablishminimumstandardsforthedesign,performanceandpurchaseofelectronicandpneumaticinstruments.
Intheeventofdifferencesbetweenthe"InstrumentDataSheet"andthisspecification,the"InstrumentDataSheet"willtakepreference.
2.0REFERENCES
ThefollowingpublicationsformapartofthisProjectSpecification.Unlessotherwisespecifiedherein,usethelatestedition.
Specifications
Z08400-34-30-SPC-006
WinterizationandProtectionofInstruments
Z08400-34-30-SPC-007
PipingandTubingforInstrumentation
API-AmericanPetroleumInstitute
APIRP551
ProcessMeasurementInstrumentation
APIRP552
InstrumentationandControlManualsforRefineryService–RP552TransmissionSystems
API2543
MeasuringtheTemperatureofPetroleumandPetroleumProducts
API-ManualOfPetroleumMeasurementStandards
Chapter4
ProvingSystems.
Chapter5.2
MeasurementofPetroleumLiquidHydrocarbonsbyPositiveDisplacementMeters.
Chapter5.3
TurbineMeters.
Chapter5.5
FidelityandSecurityofFlowMeasurementPulsedDataTransmissionSystems.
Chapter14.3
NaturalGasFluidsMeasurement-Concentric,Square-edgedOrificeMeters.
ISA-Instrumentation,Systems,AndAutomationSociety
ISARP12.4
PressurizedEnclosures
ISAS5.1
InstrumentationSymbolsandIdentificationR(1992)
NFPA-NationalFireProtectionAssociation
NFPA72
NationalFireAlarmCode
NFPA496
StandardforPurgedandPressurizedEnclosuresforElectricalEquipment(NationalFireCodes,vol.7)
ASME/ANSIStandards
B1.20.1
PipeThreads,GeneralPurpose
B16.5
PipeFlangesandFlangedFittings
B16.36
SteelOrificeFlangesClass300,600,900,1500and2500.
B31.3
ProcessPiping
B40.1
Gauges–PressureIndicatingDialType–ElasticElement
PTC19.3
PerformanceTestCodeonTemperatureMeasurement
General
CompliancewiththisSpecificationshallnotrelievetheSupplieroftheresponsibilityforfurnishingequipmentthatisproperlydesignedandconstructedandsuitableforallspecifiedoperationconditions.Thedesign,installationandtestingofinstruments,controlsystemsandrelatedequipmentshallbeinaccordancewithrequirementsofthisspecification,unlesssupersededbymorestringentlocalregulations.Allsimilarinstrumentationshallbebythesamemanufacturerforallunits.
ApplicableSpecifications
Instrumentationshallconformtothespecificrequirementsofthisspecification,aswellastotherequirementsofallotherapplicablespecificationsandstandards,unlessotherwisedefinedbyOwnerspecificationsorotherprojectdocumentsspecifyingexceptionsormodifications.
EnclosuresandConnections
Instrumentenclosuresshallbesuitablefortheelectricalareaclassificationandenvironmentwhereinstalled.
AllthreadedpipeconnectionsshallbetaperedinaccordancewithASME/ANSIB1.20.1.
Electricalconduitconnectionsforfieldmountedinstrumentsanddevicesshallbeinternallythreaded.
Thesizeofterminalblocksandscrewsshallbeconsistentwiththewiresizeusedwiththem.Terminationsshallbeoneofthetypesdescribedbelow.Springtypeterminalsarenotacceptable.
Captivescrewterminalstripsusedwithspadetypewireends.
Modular(orstacked)snap-interminalblockassembliesofthescrewed,pressureclamptype
Materials
AllatmosphereexposedpartsshallresistenvironmentalconditionsasnotintheDataSheet.Cadmiumplatingisnotacceptable.
Allprocessfluidexposedparts,suchasBourdontubes,diaphragms,ballandtubularfloats,displacers,andbellowsshallresistthecorrosivepropertiesoftheprocessfluid.
Instrumentsinflammableortoxicserviceshallminimizeleakagewhenexposedtofire.Lowmeltingpointmetalmaterials,suchasaluminumandbrass,shallnotbeusedfortheconstructionofpressurebearingorbodyretainingparts.
DesignandPerformance
Fortransmittersandreceivers,thelowestvalueoftheratedsignalsshallcorrespondto0%ofrangeandthehighestvalueshallcorrespondto100%ofrange.
Analogelectronicsignaltransmissionrangeshallbe4-20mADCwithHARTcommunication.OtherrangesrequireOwnerapproval.
Themeansfortransmissionofforcesormotionthroughthepressureholdingpartsshallbeofthepositivesealtype,suchastorquetube,bellows,diaphragm,ormagneticcoupling.Magneticcouplingshallnotbeusedwithdifferentialpressureinstruments.
Transmitters,recorders,indicators,controllers,andtransducersshallmeetthefollowingperformancerequirements:
Maximummeasurementerrorshallnotexceed0.3%ofspan.
Hysteresisshallnotexceed0.3%ofspan.
Deadbandshallnotexceed0.25%ofspan.
Outputchangecausedby38°C(100°F)ambientshiftshallnotexceed1%ofupperrangelimit.
Differentialpressureinstrumentsshallmeetthefollowingrequirements:
Differentialpressureinstrumentsshallwithstanddirectorreverseover-rangeequaltofullstaticpressurerating,withoutaffectingcalibrationorhavinganyzeroshift.
Anyoutputchangecausedbyachangeinstaticpressureequalto100%ofpressureelementratingshallnotexceed1%ofspan.
Ameansforcalibrationoftransmitters,recorders,indicators,andtransducersshallbeprovidedtopermitadjustmentofthezeroandthespanoftheoutput.
Electronictransmittersshallbemicroprocessor-based(smart)typeforalluses,withHARTcommunicationcapabilitiesorOwner’sapprovedequivalent.
Electronictransmittersutilizingtwowire24VDCpowersuppliesshallbedesignedtooperatewith12VDCat20mAtoensureenoughavailableloopvoltagelossforlengthyinputwiring.
StandAloneController
Thepreferenceisforallcontrollerstobedesignedintoeitheralocalcontrolsystemorthemainfacilitycontrolsystem.StandalonecontrollersmaybeconsideredsubjecttotheapprovaloftheOwner.
InstrumentNameplateIdentification
Allinstrumentsshallhavethefollowinginformationonapermanentlyfastenedstainlesssteelnameplatewhereapplicabletagnumber,manufacturer’sname,model,serialnumber,pressurerating,instrumentrange,calibrationrange,certifications,voltage,frequencyandmaterialsofconstruction.Nameplatesshallbescrewedorrivetedtotheunit'sbodywithstainlesssteelhardwarealongwithasupplementalstainlesssteeltagwiredtotheinstrumentusingaminimumof18gauge316stainlesssteelwiredisplayingtheinstrumenttagnumber.Adhesivesshallnotbeusedasthesolemeansofattachment.
FailureRequirements
AllinstrumentsshallfailtothesafestpositionuponairorpowerfailureasshownontheP&IDs(PipingandInstrumentDiagrams).Projectpersonnelshallhavefinalapprovalofthefailurepositionofallinstrumentsandrelatedcomponents.Temperaturecontrollersshallfailinthesafestdirectionupontemperatureelementorpowercircuitfailure.
Suppliersofelectronicinstrumentationandmicroprocessor-basedcontrolsystemsshallsupplythefollowinginformationsothatfailureactionanalysiscanbemade:
Maximumtime(secondsorminutes)thepowersourcecanbeinterruptedwithoutdisruptionofcontrolcircuitoperations.
Qualityofpowersupplyrequired(intermsofmaximumandminimumvoltagelevel)andmaximumripplethatcanbetolerated(inmillivolts,peak-to-peak).
Actionoftheinstrumentsuponre-establishmentofpower;forexample,drivefull-scaleup,drivefull-scaledownorlockinplace.
InstrumentLocations
Thelocationofinstrumentsandinstrumentconnections,includingterminalandjunctionboxes,controlequipmentandreliefvalves,shallpermiteasyaccessfromdeck/grade,permanentplatformsorstairwaysforoperation,inspectionandmaintenance.Locationsshallalsominimizethepossibilityofdamagefrompassingorfallingobjectsandfromfire.Apermanentplatformmaynotberequiredwhereaclearareaallowsaccessfromaladderorportableplatformtoaninstrumentorelementnotmorethan4.5m(15ft)abovegrade,however,allinstrumentssomountedshallbesubjecttoOwnerapproval.AllappropriateconstructiondrawingsandmodelsshallbereviewedbytheOwnerinstrumentationengineer.Allindicatinginstrumentsshallbeinstalledtobelegiblefromgradeand/ortherelatedoperationalarea.
ElectricalAreaClassifications
Allelectricalorelectronicinstrumentationequipmentshallconformtotherequirementsforinstallationinaccordancewiththeareaelectricalclassification.Enclosuresorcablingandgroundingsystemsforallfield-mountedorlocalpanel-mountedelectricalorelectronicinstruments(orinstrumentshavingelectricalconnections)shallconformtotherequirementsoftheelectricalclassificationoftheareaofinstallation.
Specialattentionshallbegiventothoseinstrumentinstallationsthatmeetallareaclassificationsandcoderequirementsbutmayserveasapathforflammablegasesorliquidstounclassifiedareasevenundernormalconditions.Thesepathsmaybeformedby:
Tubingruns
Airandsamplelinestoexplosion-proofhousingsdesignedforinternalleaksratherthanexternalsourcesofhydrocarbons;forexample,ananalyzerhousing
InstrumentationGrounding
TheDCgroundreferencepointforallsignalsfromelectr