Overview of the NEK Equipment Qualification Programs2019/05/03 · • Operating Licence:40 ‐60 years • Gross Plant Output:727 MW ABOUT NEK NEK EQ programs, UJV Rež, 2019 Slide

www.nek.si

Naslovnica

ÚJV Řež – May, 2019

Overview of theNEK Equipment QualificationPrograms

30’

ABOUTNEK

NEKEQprograms,UJVRež,2019

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• Owners: GENEnergija 50%HEP50%• Operator: NEK• NSSSSupplier: Westinghouse• ReactorType: PWR• ConstructionPermit: 1975• CommercialOperation: 1983• OperatingLicence: 40‐60years• GrossPlantOutput: 727MW

ABOUTNEK


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HE(HydroPower)=4.293GWh

TE(FossilPower)=4.400GWh

NEK=5.423GWh*

Total =14116GWh

NEK shareinSlovenia inproductionofelectricalenergy

Source:ELES,MonthlyReportonthePowerSystemforDecemberandyear2016,January2017

NEK38,4 %

TE 31,2 %

HE 30,4 %

NEKEQPROGRAMSHISTORICALBACKGROUNDANDDEVELOPMENT


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Construction designrequirements:

• EnvironmentalQualificationofElectricalandI&C(EQ)ReactorBuildingDBAequipmentshallbequalifiedtoIEEE323‐1971andIEEE323‐1974–NOFORMALPROGRAM

• SeismicDesign– SeismicCategoryImechanicalandelectricalequipmentfortheKRSKONuclearPowerPlantshallmeetseismicperformancerequirementsduringandfollowingtheOPERATINGBASIS EARTHQUAKE(OBE),SAFESHUTDOWNEARTHQUAKE(SSE)

ReactorBuilding(RB) Intermediate

and TurbineBuilding(IB,TB)

AuxiliaryBuilding(AB) EQ

NEKEQPROGRAMSHISTORICALBACKGROUNDANDDEVELOPMENT


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NEKEnvironmental Qualification programfor Electrical and I&Cequipment:

‐ FirstPeriodic Safety Review (PSR1)– 2005actionplan

‐ Slovenian Nuclear Regualtory Body ruleJV5 „Rulesonradiationandnuclearsafetyfactors“

NEKCURRENTQUALIFICATIONPROGRAMSOVERVIEW


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EQPROGRAMFORELECTRICALANDI&C EQUIPMENT

NEKEQProgramdocument:

1. ED‐12consistentwith10CFR50.49

2. ED‐12definesmethodologyandcriteriaforEQconditionsdetermination(EQzones)

3. ED‐12methodologyandcriteriaforEQMELinEQSELlists

4. Programdefinesqualificationprocess:• Methodsforqualificationand

documentation• Processcontrol(designchanges,

maintenance,purchasing)



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NEKEQPROGRAMFORELECTRICALANDI&C EQUIPMENT

EnvironmentalconditionsduringandafterDBA:• LOCA• MSLB(MainSteamLineBreak)• HELB(HighEnergyLineBreaks):T>93.30Corp>2.0MPa

(forexampleCVCSletdown,SGBD)

Analyses:• T/H:RB,IB,AB:T,pandRH• DoseratesandTIDs:RB,AB(forexampleRHsump

recirculation),IB

Harshconditionssignificantlymoreseverethannormaloperatingconditions:

• Temperature:8,30C(150F)abovenormal/designT

• Pressure:10%abovenormal/design(10kPa– 1,47psi)

• RH:100%RHwithcondensation

• ChemicalSpray‐ exposure

• Submergence– exposure

• RadiationTID>100Gy;>10Gyforelectronics

NEKDBAEQconditions:



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EQZoneMapsdocument

• EQconditionsdefinedforeveryevaluatedroom:

• DefinedHarsh/MildlocationsendcorrespondingenvelopingEQzone:



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EQequipmentlist

EQMasterEquipmentList(EQMEL)components:• ElectricalandI&Cequipment:

• Safety‐related;• Non‐safety‐relatedthataffectssafety‐

related;• Certainpost‐accidentmonitoring(RG1.97

Category1in2)• LocatedinHarshenvironmentandperformDBA

safetyfunction



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EQMELequipmentlist(typical):

‐Pumpselectricmotors,‐VAfancoolerselectricmotors‐MOVs‐Limitswitches‐Electricalpenetrations‐Pressuretransmitters(LT,PT,FT)‐RTDs,TCs‐Pressureswitches‐RMdetectors/monitors‐Solenoidvalves‐MCCDs‐H2recombiners (replacedwithPARs)‐Transformers,‐Selectorswitches



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EQSupportingEquipmentList(EQSEL)– entirefunctionalloopshallbequalified

Typicalsupportingequipment:

• Cables– BIW,Rockbestos,Okonite,GeneralCable

• Wires– FWIIISIS,FLAMETROL• Heat‐shrinkin‐linecablesplices‐

TYCO/RAYCHEM• Terminalblocks– MARATHON• SealingTapes– Graphoil,Locktite• Connectors– EGSQualtech,Conax• SealingCompounds– DOW

CORNING,NAMCO

QualTech QDCconnector



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Qualificationdocumentation– EQMS

• Testreports(EnvironmentalQualificationReport)

• NEKQualificationevaluations ‐ EPRIEQ managementSoftware (EQMS):

EQEnviroments

EQMEL

GQEPQE+SCEW



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Qualificationdocumentation– EQMSPlantQualificationEvaluation Module(PQE):

ThermalAging– qualifiedlifecalculation:

PAOTprofilesareacomparison– margincalculation:




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Otherqualificationdocuments:

EQblockdiagrams:



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Otherqualificationdocuments:

EQWorkmanshipstandard (EQWS):

EQFieldConfigurationDrawings

EQFieldConfigurationPartsList



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EQactivities: EQlabeling:Hotspots determination:• Temperature• Gammaandneutron

radiation

Controloverplantprocesses:‐ Designchanges‐ Preventive

Maintenance‐ Procurement



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EQoverallprocess

QualificationInputs:

Qualification test report(Manufacturer/Model)

Equipment:‐ Location (Normal and

DBA environment)‐ Safety function‐ PAOT

Manufacturer/Model

EQMS qualification (PQE):

‐ Qualified Life‐ EQ configuration‐ EQ maintenance‐ Procurement

requirements

EQ Block Diagram

EQ Workmanship Standard‐ Configuration requirements

(orientation, sealing, etc.)‐ Maintenance requirements

(periodic replacement equipment or part, periodic inspections, etc.)

EQ Label,Plant Information system equipment EQ designation

(EQ=YES)

QualificationEvaluation:

QualificationOutputs:

EQgroupisinvolvedwheneverEQequipmentisaffected:1) Replaced,2) Modified,3) De‐installed4) NewEQequipmentinstalled5) Environmentalconditionsaffected

‐ EQ Master Equipment ‐ EQ Supporting Equipment

NEWQUALIFICATIONREQUIREMENTSUNDERDEVELOPMENT


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SecondPeriodicSafetyReview(PSR2):

1. QualificationtoSevereAccidents– EquipmentSurvivabilityProgram

2. ActiveMechanicalEquipmentEnvironmentalQualification–MechanicalQualificationProgram

3. ElectromagneticCompatibilityQualification– EMCProgram



Slide19/27EQUIPMENTSURVIVABILITY(DEC)

REGULATIONS:

Slovenianlegislation:„Rulesonradiationandnuclearsafetyfactors“requiresEquipmentSurvivability(ES)assessmenttoshowthatthereisreasonableassurancethattheequipmentandinstrumentationusedtomitigateandmonitorDesignExtendedAccidentConditions(DEC).ActisinaccordancewithIAEA,WENRArequirements.

IAEASafetyStandardSSR‐2/1„SpecificSafetyRequirements“Requirement20‐ Designextensionconditions:„Thesedesignextensionconditionsshallbeusedtoidentifytheadditionalaccidentscenariostobeaddressedinthedesignandtoplanpracticableprovisionsforthepreventionofsuchaccidentsormitigationoftheirconsequences“.

WENRASafetyReferenceLevelsforExistingReactors(2014)IssueF‐ DesignExtensionofExistingReactors:„TherearetwocategoriesofDEC:• DECAforwhichpreventionofseverefueldamageinthecoreorinthespentfuel

storagecanbeachieved;• DECBwithpostulatedseverefueldamage“.„…DEChavethecapacityandcapabilityandareadequatelyqualifiedtoper‐formtheirrelevantfunctionsfortheappropriateperiodoftime …“




NEKWENRAapproach:

IAEAandWENRAplantstatesdefinesenvironmentalqualificationandequipmentsurvivability→NEKSafetyUpgradeProjects(SUP) requirements:

without

significant fuel

degradation

with core

melt

Operational States

Design extension conditions

Normal operation (NO)

Anticipated operational occurrences

(AOO)

Design basisaccidents (DBA)

Accident conditions




DESIGNEXTENSIONCONDITIONSDECB

1) ThelimitingscenarioisSBOsequencewithPCFV,PAR actuation,mitigationactionsat24h:reactorcoredamage,Ex‐Vesselcorerelocation;AccidentmitigationscenariousingAHXinsevereaccident(spray,recirculationfromcontainmentsumpduringex‐vesselevent):conditionsinAB,IBbuildingatARHRequipment/pipinglocations

2) SGTR:radioactivereleasetoenvironment‐ conditionsinBB1,BB2,Yard3) SFPaccident:scenarioperIndustryGuidanceNEI12‐02‐ conditionsinFHB




EquipmentSurvivabilityElements

EquipmentSafetyFunctionandLocationAssessmentDECclassification:

• Detailedsafetyfunctiondescription‐ inwhichspecificplantstateequipmentwillbeused(normaloperation,abnormaloperation,DBA,DEC)– IfDECthancandidateforDECclassification

• Locationofequipment– isequipmentlocatedinHarshenvironment– IfYesthancandidateforDECclassification

• Temperature:8,30C(150F) abovenormal/designT• Pressure:10%abovenormal/design(10kPa– 1,47psi)• RH:100%RHwithcondensation• ChemicalSpray ‐ exposure• Submergence – exposure• Radiation TID>100Gy;>10Gyforelectronics

DECPAOTtimingisdetermined:1hour,1day,1month,1year

DECQualificationstandards:‐ ElectricalandI&C:IEEE323‐1974orlateredition,IEEEEQdaughterstandards(317,334,382,383,…)

‐ Mechanical:ASMEQME‐1,orqualificationofnon‐metallicmaterials

DEC A or DEC B

&




DECsystemsandqualification

Variouspost‐FukushimaSafetyUpgradeProjectsunderdevelopment:

• IndependentthirdDECDieselGeneratoradditionaltotwo100%redundantDBADGs– DECBequipment

• Floodprotectionupgrade• NewEmergencyControlRoominDECBunkeredBuilding• PassiveContainmentFiltering&Ventilationsystem(PCFV)– DECBequipment

• PassiveAutocatalyticSystem(PAR)– DECBequipment• Containmentaccidentinstrumentation‐ DECA&B• Variousinstrumentslocatedinsystemsincontainmentbuilding(includingnewneutronfluxinstrumentationchannels)– DECA&B

• IndependentsystemfortheRCSpressurerelief(alternatePORV)‐DECAsystem

• ReactorCoolantandContainmentalternatecooling(ARH‐ACI)systemDECA&B

• AlternateSIandAF(ASI,AAF)systemsDECA&B• AlternatecoolingoftheSFP(HeatExchangers,SpraySystem)– DECAsystems

EquipmentSurvivability(underdevelopment)performedtorequiredlevelofconditions(DECAorDECBconditions).



Slide24/27OTHER NEW QUALIFICATION PROGRAMS

ActiveMechanicalEquipmentQualification

• Newqualificationprogrambasedon:• EPRIEQReferenceManual• EPRINP‐3877QualificationofActiveMechanicalEquipmentforNuclearPlants

• NUREG0800StandardReviewPlanCh.3.11• RG1.100Rev.3(SEISMICQUALIFICATIONOFELECTRICALANDACTIVEMECHANICALEQUIPMENTANDFUNCTIONALQUALIFICATIONOFACTIVEMECHANICALEQUIPMENTFORNUCLEARPOWERPLANTS)endorsingASMEQME‐1(QualificationofActiveMechanicalEquipmentUsedinNuclearPowerPlants)

• MEQMELdevelopment:DBAandDECequipment;Safetyfunction;PAOT;Location(NormalandHarshenvironmentconditions)

• Qualificationassessment: Based onavailablequalificationtestreportsorbasedonevaluationofnon‐metallicmaterials(EPRIreportsandCurtissWrightPowerSuiteEQapplications)

• Documentationpackages(similarapproachasEQ);correctiveactions• Preservingqualifiedstatus:controlofmaintenance,modificationsandprocurementprocesses



Slide25/27OTHER NEW QUALIFICATION PROGRAMS

EMCQualificationProgram

• Newqualificationprogrambasedon:• USNRCRegulatoryGuide1.180

• Guidanceapplicabletoallnewsafetyrelatedsystemsormodificationstoexistingsafetyrelatedsystemscontaininganalog,digitalorhybrid(combined)electronicsequipment

• EPRITR‐102323• DetailedtechnicalreportprovidingdetailsfromhistoricalbackgroundtorecommendedgenericEMIsusceptibilityandemissionstestlevelstobeusedinestablishingequipmentelectromagneticcompatibilityfornuclearpowerplantapplications

• ProvidesdefinitionofequipmentunderEMCscope:• EMCzones:highemissions(E);sensitiveequipment(S)includingexclusionzones

• SRI&CequipmentlocatedinEMCzones• ProvidesguidelinesandpracticalexamplesforEMC‐relateddocumentation

• Zonemapping hasbeenperformedtocaptureanemissionprofileoftheselectedarea.

• Administrativemeasures– definesexclusionsareaforwelding,useofportabletransceivers

• Implementationofpracticalnoisereductiondesignconsiderations• Qualificationsprocessrequiredandstartedfornewequipment/systems(includingSUP)

NEARFUTURETASKS


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• EQprogram/PlantLifeExtensionfrom40to60years(2023to2043)

• ElectricalPenetrationAssemblies,Cables,CableSplicesandothercommoditiesqualifiedlifeextension(ReanalysisperNUREG‐1801,qualificationtestingforlifeextension)

• Obsoleteequipment– newqualifications

• TocompleteEquipmentSurvivability• TocompleteMEQprogram• TocompleteEMCprogram

• PSR3???

Naslovnica

Thankyou!

[email protected]

www.nek.si

NEK EQ presentation

40’


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Documents

Overview of the NEK Equipment Qualification Programs2019/05/03 · • Operating Licence:40 ‐60 years • Gross Plant Output:727 MW ABOUT NEK NEK EQ programs, UJV Rež, 2019 Slide