HomeMy WebLinkAbout11 Review of the Electric Meter ProjectAqendaItem#11TRUCKEEDONNER-PublicUtilityDistrictWORKSHOPTo:BoardofDirectorsFrom:JoeHorvathDate:April03,2019Subject:ReviewoftheElectricMeterProject____1.WHYTHISMATTERISBEFORETHEBOARDTheBoardrequestedaworkshoptohaveareviewoftheelectricmeterreplacementproject.2.HISTORYStartingin1996,theDistrictbegananAutomaticMeterReading(AMR)meterreplacementprojecttochangeelectromechanicaltypemeterstoradio-equippedmeters.TheAMRsystemconsistsofmeterswithbuilt-inRadioFrequency(RF)communicationmodulesthatcontinuouslytransmitenergyconsumptiondata(onewayonly)whichispickeduponamonthlybasisbytruck-mountedcollectorunits.Districtpersonnelmustdrivebyeveryelectricmetertoobtainmonthlyenergyusageinformation.TheAMRmeterreplacementprojectwascompletedin1998.Bythemid-2000s,theDistrictbeganprocuringelectronic-stylemeters,notelectromechanical,forallnewAMRmeterpurchases.ItisimportanttonotethatallDistrictAMRmeters,whethertheolderelectromechanicaltypeornewerelectronic-stylemeters,containanRFcommunicationsmodulewhichtransmitscontinuously.TheAMRsystemhasreachedtheendofitsusefullifeduetoavarietyofinternalmeterfailures.In2014,inanticipationoftheneedtoreplacetheAMRsystem,staffbeganproactivelystudyingAMRreplacementoptions.ThisincludedleveragingtheexperienceofsisterelectricutilitiesintheNorthernCaliforniaPowerAgency(NCPA),CaliforniaMunicipalUtilitiesAssociation(CMUA),UtahAssociatedMunicipalPowerSystems(UAMPS),andAmericanPublicPowerAssociation(APPA)alongwithinvestigatingthelatestAdvancedMeteringInfrastructure(AMI)metersystemsforsuitabilitytoDistrictneeds.Staff’sconclusionwasthatAMImeterssystemsareamaturetechnologywithmanybenefits,andasignificantupdatetoolderAMRtechnology.InSeptember,2015,theDistrictenteredintoapilotprojectagreementwithanAMIvendortoinstallandtest300meters.Thepilotprojectrevealedseveralshortcomingswiththisvendor’sproductandtheprojectwasterminatedinlate2016.InApril,2017,theBoardapprovedaprojecttoinstall300ItronmetersusingTantalusSystems
(Tantalus)AMImetertechnology.OnNovember1,2017,staffpresentedtheBoardwithanoverallassessmentofTantalus’selectricAMIsystem.TheTantalussystem,includingtheuseofltronmeters,metandexceededtheDistrict’soverallper[ormanceexpectations.OnNovember15,2017,theBoardapprovedaPhase2projecttofullydeploytheTantalusAMIsystemthroughouttheDistrict.AsummarytimelineofmajormilestonesandBoardpresentationsfortheelectricmeterreplacementprojectisasfollows:MilestonesandBoardPresentationsAMRMeterDeploymentCompleteCirca1998ElectricAMIMeterReplacementProject-WorkshopJuly15,2015PilotAMIProjectusingAclara2015to2016ProposedPhase1AMIProjectusingTantalusApril5,2017ReviewofPhase1AMIProject-WorkshopNovember1,2017ProposedPhase2AMIProjectusingTantalusNovember15,2017ElectricMeterReplacementProjectPolicyChangesMarch7,2018AMIMeterInstallations,50%CompleteFebruary28,2019AMIMeterInstallations,100%CompleteQ4,2019AMIMeterDeploymentComplete20193.NEWINFORMATIONAMIisanintegratedsystemofmeters,communicationsnetworks,andadatamanagementsystem.TheAMIsystemprovidestheDistrictwithanumberofimportantfunctionsthatwerenotpreviouslypossibleorhadtobeperformedmanuallycomparedtotheolderAMRsystem.ThebenefitsofAMItocustomersandtheDistrictareverysignificantandincludedirectandindirectcomponentsthatwillreducecostsandincreaseefficienciesinDistrictoperations.Thesebenefitsincludethefollowing:ReductioninRadioFrequency(RF)Transmission:AMImetersreduceREtransmissionsbyover90%comparedtoAMRmeters,asignificantreductiontoREexposure.Bothtechnologiesoperateinthewidely-used900MHzwirelessspectrum,asapprovedbytheFederalCommunicationsCommission(FCC).AllDistrictAMRmeters,includingbotholderelectromechanicalandnewerelectronicvarieties,containanREcommunicationsmoduleasmanufacturedbytheltronCorporation(ltron).AccordingtoItronpublishedliterature,thiscommunicationmoduletransmitscontinuouslyor100%ofthetime.TheDistrict’sAMImetersalsocontainanREcommunicationsmodule,asmanufacturedbyTantalusSystems(Tantalus).AccordingtoTantaluspublishedliterature,thiscommunicationmoduledoesnottransmitcontinuously.TheTantalusmoduleonlytransmits7.1%ofthetimeatamaximum,asignificantreductioninREcomparedtoexistingAMRmeters.ThisliteratureisincludedinAttachment1.RemoteMeterReading:ThiscapabilityenablestotheDistricttoregularlyobtainenergyusagedataforbillingpurposeswithoutsendingavehicleandpersonneltoreadthemeter.Thisavoidsexpense,traffic,andpotentialsafetyissuesofsendingpersonneltoreadmeterswhileprovidingsignificantenvironmentalbenefits;On-DemandReads:ThiscaDabilitvenablestotheDistricttoobtainreadinasas
DIvacateproperties,WithOUttheneedtoSendavehicleandpersonneltoreadthemeter.Thisinformationcanbeobtainedinreal-timebystaffwhencustomerstransactbusinesswiththeDistrictinpersonoroverthephone.Thisisespeciallyusefulduetothelargenumberleaseddwellingsforseasonaluseavailableinourservicearea.Thisagainavoidsexpense,traffic,andpotentialsafetyissuesofsendingpersonneltoreadmeterswhileprovidingsignificantenvironmentalbenefits;RemoteDisconnectandReconnect:Remotelycontrolleddisconnect/reconnectswitches,builtintothemeter,alleviatetheneedforsendingaservicecrewtoremoveandreconnectservicesforpast-dueaccounts.Thisagainavoidsexpense,traffic,andpotentialsafetyissuesofsendingpersonneltoreadmeterswhileprovidingsignificantenvironmentalbenefits;PrepaymentProgram:Mostcustomersarebilledandpayforenergyaftertheyuseit.However,somecustomersmayprefertopayastheygo,orprepaytheirenergyuse.AMImeters,withtheirremotedisconnectandreconnectcapabilities,givetheDistricttheabilitytoofferaprepaybillingoptiontoourcustomers;TamperandEnergyDiversionDetection:AMImetershaveatamperdetectionfeaturethatautomaticallynotifiestheDistrictiftheyareremoved,installedupsidedown,orotherwisemanipulated.AMRmetersalsohavethisfeature,butwiththelimitationthatnotificationonlyoccursoncepermonthwhenreadingthemeter.ButunlikeAMRmeters,AMImeterscanalsohelptheDistricttoidentifyenergydiversionearlierthanotherwiseobtainable,tothebenefitofallratepayers;CustomerEnergyManagement:AlthoughbothAMRandAMImeterscontinuouslyrecordenergyusage,usagevaluesareonlyobtainedoncepermonthforAMRmetersduetotherequirementtomanuallyreadthemeters.AMImetersautomaticallysendhourly(residential)or15minute(commercial)energyusagedatatotheDistrict.TheDistrictprovidescustomerswithaccesstotheirdetailedhistoricalusagedataviaasecureinternetwebsiteandsmartphoneapplication(SmartHub).Thisinformationprovidestheopportunityfortimelyfeedbacktothecustomerontheirusage,andtheimpactofchangestheymaketotheirusage.Thisisanimportanttooltohelpcustomersbettermanageandreducetheirenergyuse;OutageNotification:TheDistricthashistoricallylearnedofallbutthelargestoutagesthroughphonecallsfromourcustomers.However,onlyasmallpercentageofcustomersimpactedactuallyreporttheoutage.AMImetersautomaticallysendanoutagenotificationtotheDistrictwhenpowertothemeterislost.UsedincombinationwiththeDistrict’sOutageManagementSystem,theautomaticoutagenotificationsfromAMImetershelpstafftopinpointproblemsquicklyandspecifically.Thishelpstogreatlyreducetheamountofcrewtimeandtravel,ofteninadverseconditions,andacceleratestherestorationprocess.Theendresultisshorteroutages,moreefficientoperations,andbettercustomercommuniciations;SinglePremiseOutage:TheDistrictsometimesreceivesoutagereportsfromcustomersthatarethecustomer’sresponsibilitytofix,suchaswhenthemaincircu
oreaernastrippea.increasingly,somecusiomerswnomonitormeirnomesremotelymaycalltoreportanoutagewhenonlyanInternetortelephoneconnectiontotheirhomeislost.WithAMImeters,staffcanimmediatelyandremotelydetermineifanindividualmeterhaspower,withoutsendingpersonneltoinvestigate.Thisagainavoidsexpense,traffic,andpotentialsafetyissuesofsendingpersonneltoacustomer’sservicelocationwhileprovidingsignificantenvironmentalbenefits;CustomerSolarIntegration:Residential-typeAMRmetersdonothavethecapabilitytometerenergyflowin2directionsnecessaryforcustomergenerationsituations,e.g.rooftopsolarornetmetering.AspecialandmoreexpensiveAMRmeterisnecessarywhichhasrequiredasitevisitbyDistrictpersonneltochangethemeter.IncontrasttoAMR,everyresidential-typeAMImeterhasthebuilt-incapabilitytobeusedforrooftopsolar,batterystorageorothernetmeteringsituations.ThiscapabilitycanbeturnedonremotelybyDistrictstaffasrequired,obviatingtheneedtodispatchstafftochangeameter;CustomerServiceEnhancements:Staffwillhavesubstantiallymoredetailedusageinformationavailabletoaddresscustomerquestionsrelatedtotheirbills,energyuse,oropportunitiesforenergysavings.Forexample,becauseAMImeterscapturehourlyor15minuteenergyusageinformation,anomaliesinreportedenergyuse(e.g.highbillcomplaints)canberesolvedquicklyandaccurately,comparedtohavingonlyasinglemonthlydatavalue;AssetManagement:TheAMIsystemcannotifyDistrictstaffofoverloadedserviceconnections,whichwillenablestafftoworkwithcustomerstoreplaceorupgradeservicepanelsandconnections.Also,inconjunctionwithplannedenhancementstotheDistrict’smeterdatamanagementsoftware,thesystemwillprovidestafftheabilitytomonitortransformersforoverloadingconditions.ThiswillenabletheDistricttoproactivelyreplaceatransformerbeforeiffailsandresultsinacustomeroutage.Conversely,transformersthataresignificantlyunderloadedcanbereplacedwithamoreappropriatelysizedunit,resultinginlowersystemlossestotheDistrict;andEnvironmentalProtection:ReducingenergyconsumptionandGreenhouseGas(GHGemissions)arekeygoalsoftheDistrict.WithafullydeployedAMIsystem,andasdetailedabove,theDistrictwillavoidmanyvehicletripstoreadmetersforregularbillingpurposes,finalservicereads,andindividualoutageinvestigations.Thisnotonlyincreasesstaffefficiency,buthelpstoreducegreenhousegasemissionfromgreatlyreducedvehicletravel.AMImeterswillalsohelpcustomerssaveenergywhichalsoprotectstheenvironmentandreducesGHGemissions.ThebenefitsofAMIcomparedtoAMRmetersaresummarizedbelow:BenefitAMRAMIReductioninRFTransmissionNoYesRFTransmisssiontime(%On)100%7.1%RemoteMeterReadingNoYesOn-DemandReadsNoYesRemoteDisconnectandReconnectNoYes
PrepaymentProgramNoYesTamperDetectionYesYesEnergyDiversionDetectionNoYesCustomerEnergyManagementNoYesOutageNotificationNoYesSinglePremiseOutageNoYesCustomerSolarIntegrationNoYesCustomerServiceEnhancementsNoYesAssetManagementNoYesGHGReductionNoYesTherearesomeelectricutilities,bothinvestor-ownedandpublically-owned,whoofferelectricmeteropt-outprograms.PG&Eisaninvestor-owned,forprofitelectricutilitysubjecttotheoversightoftheCaliforniaPublicUtilitiesCommissions(CPUC).OnFebruary1,2012,theCPUCprescribedanopt-outprogramforPG&EcustomerswhodonotwishtohaveanAMImeter.Customerswhochoosetheopt-outoptionareassessedaninitialfeeof$75,andamonthlychargeof$10.TheCPUCalsoprescribedthatthemonthlychargeterminateafter36months.PG&E’sproposedfees,whichwerenotapprovedbytheCPUC,calledforcustomerstobechargedaninitialfeeof$270andamonthlychargeof$14withnoterminationdate.Additionally,PG&Eproposedanexitfeeof$130toreturntoanAMImeter.ItisimportanttonotethatPG&E’selectricmeterreplacementprogramconsistedofchangingdirectlyfromelectromechanical-onlytypemeters(noREcommunicationsmodule)directlytoaradio-equippedmeter.Bycontrast,theDistrictcompletedthechangefromelectromechanical-onlytypemeterstoradio-equippedmetersin1998.Inaddition,itisunlikelythatthefeesandchargesprescribedbytheCPUCcoverthefullcostsofmanuallyreadingmetersandlikelycreateacost-shifttocustomerswhodonotchoosetoopt-out.SomecustomershavecomeforwardatrecentBoardmeetingstomakepubliccommentrequestinganopt-outoptiontotheDistrict’sAMIelectricmeterreplacementprogram.Themajorityofthosewhohaveraisedconcernsandarticulatedreasonsforrequestinganopt-outoptioncitedmedicalconcernsrelatedtoREemissions.Manyofthosewhoexpressedconcerns,alsoexpressedsupportforpayingfortheelectricmeteropt-outservice.Aspreviouslydiscussed,anAMIsystemdeliverssignificantbenefitstocustomersandtheDistrictincluding:improvingsafetyandreliability;improvingoperationalefficiencies,enhancingcustomerservice,supportinggreatercustomercontrolofenergyusage;allowingforgreatercustomerchoiceinbillpaymentsuchasaprepayoption;reducingGHGemissionsfromreducedvehicletrips;andreduceREtransmissionsbyafactorofmorethan90%comparedtoAMRmeters.ThesebenefitscanonlyberealizedwithanAMImeter.ApartialrolloutoftheAMImeters,orallowingalargenumbersofcustomerstoopt-outonanon-qualifiedbasis,wouldsignificantlyreduceoreliminatebenefitstoallcustomersandtheDistrict.Staffrespectsthedesireofaminorityofcustomerstohaveanopt-outoptionandpayforit,however,theDistrictmustcontinuetoservethe
overallinterestofthemajorityofitscustomers.ThereforestaffrecommendsthattheDistrictcontinuewithoutanopt-outoption.Alternatively,iftheBoardmakesafindingtoproceedwithsomeformofopt-outoption,staffrecommendsthatitbeonaqualifiedbasis,limitedandrestrictedtoamedicaloptiononly.Amedicalopt-outoptionwouldrequireacustomertosubmitaletterwrittenonthecustomer’sbehalffromalicensedphysicianwhichstatesamedicalnecessityrequiringavoidanceofREexposure.Stafffurtherrecommendsthatsuchrequests,oranyotherrequesttoopt-out,wouldbesubjecttoapprovalatthediscretionoftheGeneralManager.Underanopt-outoption,staffproposestheuseofastandardelectronic-stylemeter,butwithoutabuilt-inradiocommunicationsmodule.Anyformofanopt-outprogramwouldrequirestafftomanuallyreadmetersandmanuallyenterthisinformationintotheDistrict’sbillingsystem.Thecosttoperlormthisserviceisrequiredtobebornebythosecustomerswhochoosetoparticipateinanopt-outprogram.Staff’scostrecoverycalculationisbasedoncostcausationprinciples,wherebyopt-outprogramcostswouldbeassessedsolelytoprogramparticipants.Thisproposalensuresthatcustomerswhodonotparticipateinaprogramarenotunfairlyburdenedwithopt-outprogramcosts.Opt-outprogramcostsshouldbecost-neutraltotheDistricandnon-participatingcustomers,consistentwithDistrictCode.Staffestimatesthatthemonthlycosttoreadmeterswillrangefrom$40to$80.StaffproposestoleveragetherecentworkdonebyHDRConsultants(HDR)tofurtheranalyzethecoststomanuallyreadmeters.HDRhasperformedseveralcostofservicestudiesfortheDistrict’sWaterandElectricdepartmentsformanyyears.Theyarewell-acquaintedwithDistrictoperationsandthecoststoprovideservicestocustomers.Opt-outprogramcostswouldincludethefollowingitems:up-frontcoststodevelopandadministertheprogram;stafflabortoreadmeters;vehicleusagecharges;andstafflabortoenterinformationintothebillingsystem.IftheBoardelectstoproceedwithofferingaqualified(medical-only)opt-outprogram,staffestimatesthatitwillrequireatleast2monthstoanalyzeprogramscostsanddeveloptheprograminsufficientdetailtoprovidetheBoardwithaproposedprogramforreviewandpossibleapprovalatafuturemeeting.Theadoptionofaproposedopt-outprogramwouldbeaccordingtothefollowingtentativeschedule:.April3,2019-Workshoptodiscussthepossibilityofofferinganopt-out(tonight);.April&May-PerformcostanalysisanddraftproposedCodechanges;.June5,2019-Workshoptodiscusstheproposedopt-outprogram;.July17,2019-ConsiderationofschedulingaPublicHearing;.September4,2019-ConductaPublicHearing;and.September4,2019-Possibleapprovalofanopt-outprogramviaordinance.IfapprovedbytheBoard,thenewprogramwouldbecomeeffective30daysafterapproval,onOctober4,2019.
4.FISCALIMPACTTheDistricthasplannedforanelectricmeterreplacementprogramthroughtheFinancialMasterPlan.ThecostoftheprojectisfundedfromtheElectricCapitalReserveFund.Staffestimatesthatthemonthlycost,percustomer,tomanuallyreadmetersforanopt-outprogramwillrangefrom$40to$80,plusaninitialsetupfee.Thecosttomanuallyreadmetersisrequiredtobebornebythosecustomerswhochoosetoparticipateinanopt-outprogram.Opt-outprogramcostsshouldbecostneutraltotheDistrictandnon-participatingcustomers,consistentwithDistrictCode.5.RECOMMENDATIONProvideinputanddirectiontostaff.frzcJoeHorvathMichaelD.HolleyElectricUtilityDirectorGeneralManager
ItronKnoklledgetoShapevrFuturCENTRON®MeterTechnicalReferenceGuideEffectiveDate:October200601-Puffingknowledgetowork..,::
Operation:C12.19C1SD,C1ST,andCISLVersionsRFOptions1—AsanoptiontheC12.19D/TILregistercanbeorderedwithR300CD/CD3functionality.ITheR300CD/CD3continuouslytransmitsStandardConsumptionMessages(SCM)andIIntervalDataMessaging(1DM)usingradiofrequencyintheunlicensedfrequencybandLwhichcanbereadbyhandheld,drive-by,orfixednetworksystems.ThetablebelowdescribesthevariousversionsoftheREoption:OptionSCMERTType1DMERTTypeDescriptionR300CD04N/ATwoERTregisterwithout1DMR300CD30824ThreeERTregisterwith1DMThetransmissionfrequencies,thefrequencyhoppingpattern,andthetimeintervalbetweentransmissioncyclesarerandominnature;thusprovidingamethodforavoidinginterferencewithtransmissionfromotherdevices.EachSCMmessagecontainstamperinformation.BelowisachartthatindicatesthetamperinformationavailableineachSCM:SCM#Indicator#GroupIIMeterInversion12MeterRemoval21DemandReset(PushButton)22LowBatteryorEndofBillingSchedule(1yearfromendofwarning)31BillingEvents32Non-BillingWarningsSTamper,Event,andAlarmsIndicatorBehavior:Twobitsareusedtologtheabovealarm,event,andtamperoccurrenceGroups.SAllIndicatorsare“Non-Latching”,meaningtheR300CD/CD3boardcontinuestoincrementforeachandeveryalarm,event,ortamperoccurrenceeachtimetheyhappen.64CENTRON®MeterTechnicalReferenceGuide
TantalusTantalusSystemsCorp.3O1348OGilmoreWay,Burnaby,BCCanadaV5G4Y1Tel.604.299.0458Fax604451.4111www.tantalus.comMay23,2012ToWhomItMayConcern:ToinvestigatetheRFexposureoftheTantalusSystemsCorp.TC-1120/1220seriescommunicationmoduletheFCCOETBulletin65andtheHealthCanadaSafetyCode6(asspecifiedinRSS-102)havebeenusedasguidelinestodeterminecompliancewiththeFCCandICRFexposurelimit.InadditiontheFCChasallowedtoomitthe20cmgrantnoteandusermanualstatementspecificallyforutilitymetersifthesource-basedtime-averagedoutputpowersarebelowtheJuly17,2002TCBExclusionListfootnote3GeneralPopulation,foradistancegreaterthanorequalto2.5cmthresholdlevels.Analysis:AsperOETBulletin65andHealthCanadaSafetyCode6guidelines:TheEUTisclassedtomeettheRFexposurethatitsubjectstothe“GeneralPopulation/UncontrolledEnvironment”.Underthisclassthelimitiscalculatedby:S=f/1500WhereSisthePowerDensityinmW/cm2.FisthefrequencyofoperationinMHz.TheEUToperatesinthe902to928MHzband,thelowerexposurelimitwouldbeobtainedbyusingafrequencyattheloweredgeoftheband,therefore:S=902/1500=0.601mW/cm2ThemaximumEIRPwasmeasuredtobe0.828W.:--LHowever,undernormaloperationthetransmitterisnotoncontinuouslyandthereforeitspower?::mustbetimeaveraged.Themaximumtotaltransmitcyclewillbe10.7%.
TheaverageEIRPistherefore:ETRP(average)=cycleEIRP(averaae)=0.828W*0.1070.0941WThepredictedpowerdensityatadistanced,inthesamehorizontalplaneastheelevationoftheantennaiscalculatedandgraphedbelow:DictnepfrnmAntinninMetercTheEUTisnormallyoperatedandhousedwithinanelectromechanicalutilitymeter.FromthepredictedexposurelevelsgraphedabovethedistanceawayfromtheEUTantennawheretheRfexposurelimitisexceededisrequiredtobelessthan4cm.TypicallyoccupantsofthebuildinginwhichtheEUTisinstalledaremanytimesfartherthan4cmfromtheEUTandthereforetypicalexposuresoccuratdistancesgreaterthanonemeter.Atonemeterthepredictedpowerdensityis0.810uW/cm2or0.13%oftheallowableFCCexposurelimit.Eirp:=0.828Duty_cycle:=0.107Eirpavg:=EirpDuty_cyclefreq_Mhz:=902freqMhzU:=0.01,0.011..10CDistanceinmeters)fcclimit:(FccLimitinW/cm2)15001000s(d):=Eirp_avgfPowerinW/cm2)4it(d100)20.01<5)0s(d)fcclimit—1101.108E11.tjE_:Ii0.010.1110ci
AsperTCBExclusionList,footnote3,GeneralPopulation>2.5cm:Specificallyfortelemetryutilitymeters,themaximumtimeaveragedsourcebasedoutputpowermustbebelowthefollowinginordertoallowomissionofthe20cmnoteandstatementonaTCBGrantofEquipmentAuthorizationandEUTusermanualrespectively.l2O/f(GH)mWor120/0.928=129mWAsinthepreviousanalysisthemaximumtimeaveragedsourcedbasedoutputpoweris94.1mWandrepresents73%ofthelimit.Result:TheEUTdoesnotexposethepublictoradiofrequencyenergylevelsinexcessoftheFCCguidelines.ThefollowingstatementisnotrequiredonaTCBGrantofEquipmentAuthorizationorintheEUTusermanual:“Theantennausedforthistransmittermustbefixed-mountedinapermanentstructureprovidingaseparationdistanceofatleast20cmfromallpersonsduringnormaloperation.”MarkFairburnRFDesignEngineerTantalusSystemsCorp.
TantalusTantalusSystemsCorp.301—3480GilmoreWay,Burnaby,BCCanadaV5G4Y1Tel.604.299.0458fax604451.4111www.tantalus.comSeptember3,2013ToWhomItMayConcern:AnewdataratehasbeencreatedfortheSmartMetercommunicationmodule(FCCID:OZFACXX2O).factorof1.5;thisisduetothehigherdataratebeingabletoacknowledgemoredeviceswithaSincetheREexposureatthenewdatarateisloweritmeansthattheBYexposuredataandtheusermanualcontainpertinentinformationfortheexistingdatarateandL_newexhibitsarenotrequired.MarkFairburnBYDesignEngineerTantalusSystemsCorp.