ML22252A157

Uta Presentation for August 10, 2022 Meeting

ML22252A157
Person / Time
Site:	University of Texas at Austin
Issue date:	08/10/2022
From:	University of Texas at Austin
To:	Office of Nuclear Reactor Regulation
Wertz G
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ML22252A158	List: ML22252A157 ML22252A175
References
Download: ML22252A157 (19)

Text

UTTRIGAControlSystemUpgrade Phase0Meeting

Overview

• Motivation

• PlansandStrategy

• Status

Motivation:NETLHistory

• TRIGAMarkIIreactorconstructionatNETL19891992

• Initialcriticality1992

• Controlsystem,digitalI&Cintegratedwithanalogsafetysystem

• Digitalwith2compiledsoftwaresets,2operatingsystems

• Operatorinterface,GeneralAtomicssoftware,windowsplatform

• Hardwareinterface,QNX

• Currentsystemistheoriginalsystemwithfewperipheralupgrades

• Tektronixrecorderdisplay,relacedwithaPCbasedemulator

• RMSII&areamonitorsreplacedwithLudlum,displaynetworkedmonitors

• GAeffluentmonitorreplacedwithCanberra,displaynetworkedmonitor

Motivation:LimitingCharacteristics

• Thecompileddriverscannotbemodified

• Driverssupportoriginalequipmentandcannotbeupdated

• Additionalcomputers&displaysrequiredtosupportperipherals

• Virtuallyallequipmentisobsolete

• Cannotbereplaced

• Cannotbeupdated

• Repairpartsviacannibalization

• MultipleannualrequestsforDOENEUPsupportunsuccessful

ContingencyPlanning

• ContinuerequestsforDOENEUPsupport

• SearchforTechSupporttorewritesoftwaretoallowchangingdrivers

• QNXnotinterested

• AustinisaTechHubwithmanysystemintegrators

• Localsoftwarecompaniesdeclinedrequestforproposal

• Strategydevelopedforalternatefundingprofile

StrategyforAlternateFundingProfile

• Identifypotentialsources

• PhasedUpgradeforincrementalimplementation

• UsetheGAsystemfordevelopmentandcustomizationofcontrols

• ReplaceobsoleteequipmentwithcurrentCOTSequipment

• Addresscurrentlyidentifiedneedforimprovements NOTE:Theinitialphaseinforthesolutionwasinprogress,supported byotherfunds,atnotificationof20222023NEUPaward

Phasedupgrade

• Essentiallyupdatedversionofthe1992system

• Discretestagesforimplementationasfundsavailable

• Simpleandtransparentchanges

• Configurablesoftwaretosupportindefinitelifeextension

• Someoptimizationbasedonoperatingexperience

• RequestforproposalsubmittedtoPlantationProductions,Inc.

EquipmentReplacement(1/3)

• Currentgenerationcomputersreplace286PCs

• EthernetbaseddataacquisitionhardwarereplacesDigitalandAnalog I/OrunningonIA/IBMPCATbus

• NewNETLLINUX&GeneralAtomicssoftware

• ReplacingWindows3.0andQNX4.25

• CurrentlyatUSGS,INL,AFFRIandBAEC(Bangladesh)

• DOWinstallationpending

• Powerlevelchannels

• CurrentNM1000,replacedbyNLW1000andNMP1000

• AdditionofaCompensatedIonChamber

• ObsoleteNP1000&NPP1000replacedbycurrentgeneration

EquipmentReplacement(2/3)

• COTSsignalprocessingmodulesforActionPaks:

• Fueltemperaturemoduleswithcurrentgenerationstandaloneinstruments

• WatertemperaturemoduleswithEthernetbasedRTDmodule

• Magnetpowergroundmodule

• Isolation/convertermodulesforanalogbargraphdisplay

• Ethernetsingleboardcomputerrodcontrolmanaging:

• Electromagnets

• Limitswitches

• Rodpositionindication

• Performanceofroddroptimingcalculations ReplacesfunctionalityoftheLabmaster board

EquipmentReplacement(3/3)

• NPP1000forLabmaster boardpulsemonitoringfunction

• HDdisplaysforTektronics graphicandtextdisplayemulator

DesignOptimization(1/3)

• Improvecontrol GA&QNXcollectsdataat0.1secondintervals

• Reactorpowercanchangesignificantlyinlessthan0.1second

• NMdataat0.2sec.,QNXscan0.1sec.createssignificantdelayindisplayandcontrol

• Timedependentpowerlevelchangesareusedtocalibratecontrolrods

• Discontinuousjumpsinpowerindicationrequiredloweringoperatingpower

• Optionsunderconsideration:

• Adjustcontrollertimeconstantsinnewsystem,or

• Developsingleboardcomputerusingroddroptimerwith0.025secondsamples,or

• Developanembeddedsystemusinganalogsignals

• Isolatedanalogpowerlevelsignals,displayand/orprocessing

• Ifpowerleveldisplayfluctuates,analogdisplaymayprovidebetterinformation

• Optionforofflinedataprocessingsupportingcontrolrodcalibration

DesignOptimization(2/3)

• Increasesamplerateforplayback(min.QNX/GA1sec.,LINUX0.1)

• Selectablestartupchannel(AFFRI)

• ConfigurableforNLWorNMP

• ChannelsensitivitymayrequireTechnicalSpecificationchange

• Preventssinglefailureforstartupchannel

• SCRAMlogic

• SCRAMInitiationwithtwochanneltripsignals(INL/NRAD)

• ThiswillrequireaTechnicalSpecificationchange

• UptofourchannelswillhaveSCRAMcapability

• Permitsonlinecalibration,testingandmaintenance

• PreventsspuriousSCRAMs

DesignOptimization(2/3)

• Miscellaneousprocessinstrumentsupgrade

• Poollevel,addingmeasurementtothefloatswitchesforhi/loandscram

• Conductivity,addingcontinuousmonitoringcapability

• Fueltemperature

• addingmonitorsforallavailablesensors

• RemovefromTechnicalSpecifications

Phase1:OverallSystemRequirements/Design

• SystemRequirementsmodeledonIEEE8301998software requirements

• SoftwareRequirementsforGAsoftwareonCCS/UITunits

• Blockdiagrams

• Externalcomponentslist(tobesuppliedbyUT)

• Preliminarylistofhardwarecomponents

• ValidationbyUTNETLstaff

Phase2:DesignTestPlatform

• CustomTINA(Testing,Instruction,NoAtomicsmodule)

• Simulationplatformforsoftwaretesting

• Playbacksystemforoperatingsystem

Phase3:DigitalDataAcquisitionDesign/

Construction

• Fabricate2UITcomputersystems(oneforTINA,oneforconsole)

• Fabricate2CCSsystems

• BuildTINAsystem

• Integrate(watchdogandnetworking)

• DesignDACbackplane&buildDAC

• Fabricatesingleboardcomputers

Phase4:SoftwarePorting

• CustomizeGAdigitalconsolesoftwaresystemforNETL Softwareisanupgradeoftheexistingsystem

Phase5:Installation

• Assemblehardwareforparalleloperation

• Assembleauxiliaryrack

• Connect/Disconnectcablesfor:

• Roddrivecontrollers

• Analogcircuits

• Digitalcircuits

• Performwiring

• Integrateandtest

• Acceptancetesting

• PartI:Reactorsecured,simulatingsignals

• PartII:Reactoroperating

Status

• GASoftwarelicenseacquired

• SiteSurveycomplete

• NoticeofNEUPAwardforcontrolsystemupgrade

• Purchasepending,next(Texas)fiscalyear(Sep1)

• GeneralAtomicsequipment

• PlantationProductions,Inc