Z084003430SPC003 Process Measurement Instruments.docx

Z084003430SPC003 Process Measurement Instruments.docx

《Z084003430SPC003 Process Measurement Instruments.docx》由会员分享，可在线阅读，更多相关《Z084003430SPC003 Process Measurement Instruments.docx（17页珍藏版）》请在冰豆网上搜索。

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