for Nuclear Power Plants - ?· for Nuclear Power Plants Gary W Castleberry PE PMP ... • On January…

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<ul><li><p>EnvironmentalQualificationofSafety Related Electrical EquipmentSafetyRelatedElectricalEquipment</p><p>forNuclearPowerPlantsGaryWCastleberryPEPMP</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 1 of 63</p></li><li><p>Learning ModulesLearningModules</p><p>1. WhatisEnvironmentalQualification(EQ)</p><p>2 i f Q2. HistoryofEQ</p><p>3. FederalRegulation10CFR50.49</p><p>4. IEEE323</p><p>5 What the Industry Has Learned5. WhattheIndustryHasLearned</p><p>2</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 2 of 63</p></li><li><p>Module1h l l fWhatisEnvironmentalQualification?</p><p> Toprotectthehealthandsafetyofthepublicallp y pcommercialnuclearreactorsarehousedinsteelandreinforcedconcretecontainmentbuildings(CB)(CB)</p><p> InsidetheCBisthereactorandsteamgeneratorscontainingwaterathightemperaturesandpressures</p><p> AlsoinsidetheCBareelectricalcomponentscritical to the safe shutdown of the nuclearcriticaltothesafeshutdownofthenuclearreactor</p><p> ThesecomponentsareclassifiedasClass1Ep</p><p>3</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 3 of 63</p></li><li><p>What is Environmental Qualification?WhatisEnvironmentalQualification?</p><p>TypicalContainmentBuildingforaNuclearPowerPlant4</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 4 of 63</p></li><li><p>What is Environmental Qualification?WhatisEnvironmentalQualification?</p><p>All piping penetrations to the CB mustAllpipingpenetrationstotheCBmusthaveredundantisolationvalves</p><p> Intheunlikelyeventofapipebreakiny p ptheCB,alargeamountofsteamandenergyisreleasedinsidetheCB</p><p>ThisaccidentwouldsubjecttheClass1Ecomponentstoelevatedtemperatures,</p><p>d d blpressures,radiationandpossiblesubmergence</p><p>5</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 5 of 63</p></li><li><p>What is Environmental Qualification?WhatisEnvironmentalQualification?</p><p> To ensure the Class 1E components canToensuretheClass1Ecomponentscanfunctionduringandaftertheaccidenttheymustbequalifiedtothisharshenvironment</p><p> Manyindustrystandardshavebeendevelopedtodescribethepreferredmethodsfortestingandqualifyingthesecomponents</p><p> Tounderstandwheretheseprogramsaretoday,onemustunderstandthehistoryofEnvironmentalQualification(EQ)</p><p>6</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 6 of 63</p></li><li><p>Module2History of Environmental Qualification in the USAHistoryofEnvironmentalQualificationintheUSA</p><p>NuclearIndustry</p><p> IntheUSnuclearpowerplantsarebuiltandoperatedbypublicutilitycompanies</p><p> TheFederalGovernmentissuedlicensestooperateafterextensivereviewsofvolumesofsafety analysis reportssafetyanalysisreports</p><p> ThisgovernancewasinitiallyperformedbytheAtomicEnergyCommission</p><p> Intheearly1970stheNuclearRegulatoryCommission(NRC)wasformedtooverseecommercial nuclear powercommercialnuclearpower</p><p>7</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 7 of 63</p></li><li><p>HistoryofEnvironmentalQualificationh l dintheUSANuclearIndustry</p><p> The regulations governing nuclear power areTheregulationsgoverningnuclearpowerarefoundinPart50ofTitle10oftheCodeofFederal RegulationsFederalRegulations</p><p> AppendixAto10CFR50istheGeneralDesignCriteria (GDC) which provide the must doCriteria(GDC)whichprovidethe mustdo designaspectsofanuclearpowerplant</p><p>Th i i i l h i i l f Theirpurposeistoinculcatetheprincipleofdefenseindepth</p><p>8</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 8 of 63</p></li><li><p>HistoryofEnvironmentalQualificationh l dintheUSANuclearIndustry</p><p> Elements of Defense in DepthElementsofDefenseinDepth RedundantandDiverseSafetySystemsnecessaryforthesafeshutdownofthenuclearreactor</p><p> AutomaticReactorProtectionSystemsthatshutdownthereactorwhencriticalparameterlimitsare exceededareexceeded</p><p> RadiationContainmentBarriers Fuel Rods FuelRods Reactorpipingsystem ContainmentBuilding</p><p>9</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 9 of 63</p></li><li><p>HistoryofEnvironmentalQualificationh l dintheUSANuclearIndustry</p><p>10</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 10 of 63</p></li><li><p>HistoryofEnvironmentalQualificationh l dintheUSANuclearIndustry</p><p> Criterion 4 of the GDC requires:Criterion4oftheGDCrequires: Structures,systems,andcomponentsimportantto safety shall be designed to accommodate thetosafetyshallbedesignedtoaccommodatetheeffectsofandbecompatiblewiththeenvironmentalconditionswithnormaloperation,maintenance,testingandpostulatedaccidents,includinglossofcoolantaccidents.</p><p> Therewaslittleguidanceearlyoninhowtomeetthisrequirement</p><p>11</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 11 of 63</p></li><li><p>HistoryofEnvironmentalQualificationh l dintheUSANuclearIndustry</p><p> In 1969 the Union of Concerned Scientists (USC)In1969,theUnionofConcernedScientists(USC)wascreated Formed by an ad hoc group of faculty and students atFormedbyanadhocgroupoffacultyandstudentsattheMassachusettsInstituteofTechnology</p><p> Wantedtoprotestwhattheyperceivedasthemisuseofscienceandtechnology</p><p> Inthemid1970stheUSCpetitionedtheNRCregardingthetestfailuresofsomesafetyrelatedcomponentssomeutilitieshadexperienced</p><p>12</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 12 of 63</p></li><li><p>HistoryofEnvironmentalQualificationh l dintheUSANuclearIndustry</p><p> As a result of the USC petition, on May 31,AsaresultoftheUSCpetition,onMay31,1978theNRCissuedCircular7808EnvironmentalQualificationofSafetyRelatedElectricalEquipmentatNuclearPowerPlants</p><p> Theintentwastohighlightthelessonslearnedfromthesetestfailures</p><p> TheutilitieswereinstructedtoreviewtheirEQprograms</p><p> Nowrittenresponsewasrequired</p><p>13</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 13 of 63</p></li><li><p>HistoryofEnvironmentalQualificationh l dintheUSANuclearIndustry</p><p> Following the issuance of Circular 7808 theFollowingtheissuanceofCircular78 08theNRCconductedseveralinspectionsatutilitiesand found little progress was being made onandfoundlittleprogresswasbeingmadeonEQ</p><p> As a result on February 8 1979 the NRC Asaresult,onFebruary8,1979theNRCissuedBulletin7901.</p><p>Thi b ll ti i d th tiliti ithi 120 Thisbulletinrequiredtheutilities,within120days,toprovideawrittensubmittaloftheinformation requested in Circular 7808informationrequestedinCircular78 08.</p><p>14</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 14 of 63</p></li><li><p>HistoryofEnvironmentalQualificationh l dintheUSANuclearIndustry</p><p> At 4 a m on March 28 1979 the accident atAt4a.m.onMarch28,1979theaccidentatThreeMileIslandoccurredresultinginacoremelt eventmeltevent</p><p> Lessonslearnedwasthatseveralcriticalcomponentsfailedduringtheaccidentduetotheharshaccidentenvironment</p><p> Failure of sensors denied control Failureofsensorsdeniedcontrolroomoperatorscriticalinformationduringtheevent</p><p>15</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 15 of 63</p></li><li><p>HistoryofEnvironmentalQualificationh l dintheUSANuclearIndustry</p><p> On January 14, 1980 the NRC issued BulletinOnJanuary14,1980theNRCissuedBulletin7901Brequestingaresubmittaloftheinformationpreviouslyrequestedin7901</p><p> RequiredthedevelopmentofaMasterEquipmentListofEQcomponents</p><p> 7901BincludedEnclosure4GuidelinesforEvaluationEnvironmentalQualificationofClass1EElectricalEquipmentinOperatingReactors</p><p>16</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 16 of 63</p></li><li><p>HistoryofEnvironmentalQualificationh l dintheUSANuclearIndustry</p><p> NRCheldfourdaysofindustrymeetingsinJulyC e d ou days o dust y eet gs Ju y1980todiscusstherequirementsof7901BandthefuturecodificationofEQ</p><p> FollowingthismeetingtheNRCissuedSupplement2and3to7901Btoanswerthe</p><p>ti i d b th i d t i th J lquestionsraisedbytheindustryintheJulymeeting</p><p> EPRI formed a Utility Advisory Group on EQ to EPRIformedaUtilityAdvisoryGrouponEQtoaddressresearchrequiredtoqualifysomecomponentsp</p><p>17</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 17 of 63</p></li><li><p>HistoryofEnvironmentalQualificationh l dintheUSANuclearIndustry</p><p> Following the accident at TMI the NRC issuedFollowingtheaccidentatTMItheNRCissuedmanynewregulationsbaseduponlessonslearnedlearned</p><p> InDecember1980RegulatoryGuide1.97Instrumentation for Light Water CooledInstrumentationforLightWaterCooledNuclearPowerPlantstoAssessPlantandEnvirons Conditions During and Following anEnvironsConditionsDuringandFollowinganAccidentwasissuedbytheNRC</p><p>18</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 18 of 63</p></li><li><p>HistoryofEnvironmentalQualificationh l dintheUSANuclearIndustry</p><p> RegulatoryGuide1.97addressedspecificegu ato y Gu de .9 add essed spec cinstrumentationusedinthecontrolroomwhichneededtobeupgraded</p><p> Upgradesincludedhigherqualitypowersources,diversityoftheinstrumentsignal,andthe</p><p>i t l lifi ti f thenvironmentalqualificationofthesensorelement</p><p> When the rule for EQ was issued in 10CFR50 49 WhentheruleforEQwasissuedin10CFR50.49,paragraph(b)(3)includedtheequipmentfromRegulatoryGuide1.97g y</p><p>19</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 19 of 63</p></li><li><p>Module3d l lFederalRegulations10CFR50.49</p><p> TheruleforEQisfoundinthecodeoffederale u e o Q s ou d t e code o ede aregulations10CFR50.49</p><p> Requireseachlicenseetoestablishaprogramforq p gEQ</p><p> Paragraph(b)definesthethreegroupsofequipmentimportanttosafety SafetyrelatedelectricalequipmentN f t l t d i t h f il ld Nonsafetyrelatedequipmentwhosefailurecouldimpactasafetyrelatedcomponent</p><p> CertainpostaccidentmonitoringequipmentCertain post accident monitoring equipment</p><p>20</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 20 of 63</p></li><li><p>Important to SafetyImportanttoSafety</p><p>Important to safety is an important conceptImportanttosafetyisanimportantconcept</p><p>Itencompassesmorethanjustsafetyrelated</p><p>h i h i i d hThatiswhyitisrepeatedhere Safetyrelatedelectricalequipment Nonsafetyrelatedequipmentwhosefailurecouldimpactasafetyrelatedcomponent</p><p> Certainpostaccidentmonitoringequipment</p><p>21</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 21 of 63</p></li><li><p>Environmental Qualification ProgramEnvironmentalQualificationProgram</p><p> 10 CFR50 49 defines safety related equipment10CFR50.49definessafetyrelatedequipmentasequipmentwhichmustsurvivedesignbasisevents to ensure:eventstoensure: Theintegrityofthereactorcoolantpressureboundaryboundary</p><p> Theabilitytoshutdownthereactorandkeepitinsafeshutdownmodesa e s u do ode</p><p> Themitigationofoffsiteradiationexposures</p><p>22</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 22 of 63</p></li><li><p>Environmental Qualification ProgramEnvironmentalQualificationProgram</p><p> Design Basis EventsDesignBasisEvents NormaloperationAnticipated operational occurrences Anticipatedoperationaloccurrences</p><p> DesignbasisaccidentsE t l t Externalevents</p><p> Naturalphenomenal f l h h Examples:Lossofcoolantaccident,high</p><p>energylinebreak,flooding</p><p>23</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 23 of 63</p></li><li><p>Environmental Qualification ProgramEnvironmentalQualificationProgram</p><p>24</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 24 of 63</p></li><li><p>Environmental Qualification ProgramEnvironmentalQualificationProgram</p><p> The requirements for qualification areTherequirementsforqualificationareaddressedinpart(e)oftheruleandinclude: (1)Temperatureandpressure.Timedependent( ) p p ppressureandtemperatureforthelocationoftheequipmentimportanttosafety(2) H idi H idi ff d i h d i (2)Humidity.Humidityeffectsduringthedesignbasisaccidentsmustbetakenintoconsideration</p><p> (3) Chemical effects The composition of (3)Chemicaleffects.Thecompositionofchemicalsexposuremustbethemostseverepostulated</p><p>25</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 25 of 63</p></li><li><p>Environmental Qualification ProgramEnvironmentalQualificationProgram</p><p>26</p><p>TypicalLOCATemperatureandPressureCurvesforQualification</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 26 of 63</p></li><li><p>Environmental Qualification ProgramEnvironmentalQualificationProgram</p><p> Requirementscontinuedq (4)Radiation.Theradiationdoseforcomponentsmustbebaseduponthetotaldosereceivedduringthe years of normal operation over the life of thetheyearsofnormaloperationoverthelifeofthecomponentplustheradiationreceivedduringandaftertheaccident.</p><p> (5) Aging Equipment that is qualified by testing must (5)Aging.Equipmentthatisqualifiedbytestingmustbeconditionedpriortothetesttosimulatetheyearsinservicepriortoanaccident.Thismaybedonebyusing actually aged components or by artificially agingusingactuallyagedcomponentsorbyartificiallyagingthecomponent.Ifartificialpreconditioningisnotpracticalforthefullintendedservicelife,shorterservice lives can be established.servicelivescanbeestablished.</p><p>27</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 27 of 63</p></li><li><p>Environmental Qualification ProgramEnvironmentalQualificationProgram</p><p> Requirementscontinued (6)Submergence (ifsubjecttobeingsubmerged).Equipmentmustbequalifiedtothesubmergencedepthanticipatedormovedabovethefloodplain.</p><p> (7)Synergisticeffects.Synergisticeffectsoccurwhenthecombinedeffectofmorethanoneinputcreatesamoresevereresponsethanthesomeoftheindividualinputsl If i i ff b li d halone.Ifsynergisticeffectsarebelievedtohaveasignificanteffectonequipmentqualification,theymustbeconsidered.(8)M i T t f t i t i t t l i (8)Margins.Toaccountforuncertaintyintestoranalysis,marginsmustbeappliedintheanalysisortest.Thisalsoprovidesassurancethatvariationsinmanufacturingprocesses do not negate the qualificationprocessesdonotnegatethequalification.</p><p>28</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 28 of 63</p></li><li><p>EQProgramDocumentationfRequirementsfrom10CFR50.49</p><p>Part(d)of10CFR50.49states:Theapplicantorlicenseeshallpreparealistofelectricequipmentimportanttosafetycoveredbythissection.Inaddition,theapplicantorlicenseeshallincludetheinformationinparagraphs(d)(1),(2),and(3)ofthissectionforthiselectricequipmentimportanttosafetyinaqualificationfile.</p><p>The applicant or licensee shall keep the list and information in the file current andTheapplicantorlicenseeshallkeepthelistandinformationinthefilecurrentandretainthefileinauditableformfortheentireperiodduringwhichthecovereditemisinstalledinthenuclearpowerplantorisstoredforfutureusetopermitverificationthateachitemofelectricequipmentisimportanttosafelymeettherequirementsofparagraph(j)ofthissection.</p><p> (1)Theperformancespecificationsunderconditionsexistingduringandfollowingdesignbasisaccidents.</p><p> (2)Thevoltage,frequency,load,andotherelectricalcharacteristicsforwhichtheperformancespecifiedinaccordancewithparagraph(d)(1)ofthissectioncanbeensured.</p><p> (3)Theenvironmentalconditions,includingtemperature,pressure,humidity,radiation,chemicals,andsubmergenceatthelocationwheretheequipmentmustperformasspecifiedinaccordancewithparagraphs(d)(1)and(2)ofthissection.</p><p>29</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 29 of 63</p></li><li><p>Module 4 IEEE 323Module4IEEE323</p><p>30</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 30 of 63</p></li><li><p>31</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gary W. Castleberry 31 of 63</p></li><li><p>IEEE 323IEEE323</p><p>32</p><p>www.PDHcenter.com PDHonline Course E396 www.PDHonline.org</p><p>Gar...</p></li></ul>

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