ML17262A977

From kanterella
Revision as of 13:06, 29 June 2018 by StriderTol (talk | contribs) (Created page by program invented by StriderTol)
Jump to navigation Jump to search
Rev 5 to ODCM for Ginna Station.
ML17262A977
Person / Time
Site: Ginna Constellation icon.png
Issue date: 03/13/1992
From:
ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17262A975 List:
References
PROC-920313, NUDOCS 9209030119
Download: ML17262A977 (40)
v • d • e


Text

OffsiteDoseCalculation ManualforGinnaStationRochester GasandElectricCorporation Revision5March1319929209030119 920828PDRADOCK05000244RPDR s

GinnaStationOffsiteDoseCalculation ManualRadiological EffluentTechnical Specification SectionTABLEOFCONTENTS.DoseCalculation ManualPae3.5.54'2'Z.LiquidEffluentMonitorSetpoints 3.5.54.12'ZZ.GaseousEffluentMonitorSetpoints 3.9.1.1III.LiquidEffluentReleaseConcentrations 3~9~1~2IV.LiquidEffluentDose103~9~1.33.9.2.35.5V.LiquidandGaseousRadwasteTreatment andOperability 143.9~2~1VZ.GaseousEffluentDoseRate183'VZZ.GaseousEffluentDoses204~10~1VZZZ.Environmental MonitorSampleLocations 223.9ZX.Preparation ofSpecialReporttoDemonstrate Compliance withEnvironmental Radiation Protection Standards 35X.References 36 LISTOFTABLESANDFIGURESTable1DoseParameters forRadioiodines andRadioactive Particulate, GaseousEffluents Pa<acTable2DoseFactorsforNobleGasesandDaughters Table3Dispersion Parameter (X/Q)forLongTermReleases, PlantVent28Table4Dispersion Parameter (D/Q)forLongTermReleases, PlantVent29Table5Table6Table7Dispersion Parameter (X/Q)forLongTermReleases, Containment PurgeDispersion Parameter (D/Q)forLongTermReleases, Containment PurgeDispersion Parameter (X/Q)forLongTermReleases, Ground.Vent303132Table8Table9Dispersion Parameter (D/Q)forLongTermReleases, GroundVentPathwayDoseFactorsDuetoRadionuclide OtherThanNobleGases33S4~Figure1Figure2\GinnaStationLiquidWasteTreatment SystemGinnaStationGaseousWasteTreatment andVentilation ExhaustSystems1617Figure3LocationofOnsiteAirMonitorsandPostAccidentTLDs24Figure4LocationofFarmsforMilkSamplesandOntarioWaterDistrictIntake25Figure5LocationofOffsiteTLDsFigure6LocationofOffsiteAirMonitors2627 I.LiidEffluentMonitorSetointsTheGinnaTechnical Specifications, Section3.5.5,requirealarmand/ortripsetpoints forradiation monitorsoneachliquideffluentline(reference 1).Precautions, limitations andsetpoints applicable totheoperation ofGinnaStationliquideffluentmonitorsareprovidedinplantprocedures P-9andRD-13.1.Setpointvaluesarecalculated toassurethatalarmandtripactionsoccurpriortoexceeding thelimitsof10CFR20atthereleasepointtotheunrestricted area.Foraddedcon-servatism, liquideffluentreleaseratesareadministratively setsothatonlysmallfractions oftheapplicable 10CFR20maximumpermissible concentrations canbereachedinthedischarge canal.Thecalculated alarmandtripactionsetpoints foreachradioactive liquideffluentlinemonitorandflowdetermination.

mustsatisfythefollowing equation:

Equation(1):cf<CF+fWhere:Ctheeffluentconcentration whichimplements the10CFR20limitforunrestricted areas,inuCi/ml.c=thesetpointoftheradioactivity monitormeasuring theradioactivity concentration inthedischarge linepriortodilutionandsubsequent release,inuCi/ml.f=theflowasmeas'ured attheradiation monitorlocation, involumeperunittime,inthesameunitsasFbelow.F~thedilutionwaterflowasdetermined priortothereleasepoint,involumeperunittime.LiquideffluentbatchreleasesfromGinnaStationaredischarged throughaliquidwastedisposalmonitor.Theliquidwastestream(f)isdiluted(byF)intheplantdischarge canalbeforeitentersLakeOntario.Thelimitingbatchreleaseconcentration (c)corresponding totheliquidwastemonitorsetpointiscalculated fromtheaboveex-pression.

Sincethevalueof(f)isverysmallincomparison to,(F),theexpression becomes:Equation(2):c<CFf Where:C=themaximumpermissible concentration ofgrossbeta,gammaactivityabovebackground inthecirculating waterdischarge attheunrestricted areaboundary(1x107uCi/ml).Fthedilutionflowassumingoperation.

ofonly1circulating waterpump(170,000gpm).f~themaximumwasteeffluentdischarge ratethroughthedesignated pathway.kThelimitingreleaseconcentration (c)isthenconverted toasetpointcountratebyuseofthemonitorcalibration factordetermined perprocedure RD-13.1.Theexpression becomes:Equation(2a):Setpoint(cpm)~cuCimCal.Factor(uCi/mlpercpm)~Examle(LiquidRadwasteMonitorR-18):Zfoneassumes,forexample,thatthemaximumpumpeffluentdischarge rate(f)is30gpm,thenthelimitingbatchreleaseconcentration (c)wouldbedetermined asfollows:'"</30(gpm)c<5.7x10"4(uCi/ml)ThemonitorR-18alarmandtripsetpoint(incpm)isthendeter-minedutilizing themonitorcalibration factorcalculated inplantprocedure RD-131.Assumingacalibration factorof9.5x109~uolmlcpmandalimitingbatchreleaseconcentration determined abovethealarmandtripsetpointformonitorR-18wouldbe:j~'LxII1P9.5x189~udimlcpmThesetpointvaluesfortheContainment FanCoolerMonitor(R-16),SpentFuelPitHeatExchanger ServiceWaterMonitor(R-20),SteamGenerator BlowdownMonitor(R-19),theRetention TankMonitor(R-21),andtheAllVolatileTreatment WasteDischarge Monitor(R-22)arecalculated inasimilarmannerusingEquation(2),substituting appropriate valuesof(f)andthecorresponding calibration factor.

~l'%I~rQTZ.GaseousEffluentMonitorSetpintsTheGinnaTechnical Specifications (reference 1)requirealarm,and/ortripsetpoints forspecified radiation monitorsoneach'noblegaseffluentline.Precautions, limitations andsetpoints applicable

.totheoperation ofGinnaStationgaseouseffluentmonitorsareprovidedinplantprocedures P-9andRD-13.1.Setpoints areconservatively established foreachventilation noblegasmonitorsothatdoseratesinunrestricted areascorresponding to10CFRPart20limitswillnotbeexceeded.

Setpoints shallbedetermined sothatdoseratesfromreleasesofnoblegaseswillcomplywiththeTechnical Specification require-mentsof3.9.2.1.a(i),

which'stipulate thatthedose,ratefornoblegasesshallbe<500mrem/yrtothetotalbodyand<3000mrem/yrtotheskin.Thecalculated alarmandtripactionsetpoints foreachradioactive gaseouseffluentmonitormustsatisfythefollowing equation:

Equation(3).:c<~ivf'k'KWhere:c~setpointincpmQiv=releaseratelimitbyspecificnuclideinuCi/secf~discharge flowrateincfmkunitsconversion factor(cc/sec/cfm)

IK=calibration factor(uCi/cc/cpm)

Thegeneralmethodology forestablishing plantventilation monitorsetpoints isbaseduponaventconcentration limit(inuCi/cc)derivedfromsitespecificmeteorology andventreleasecharacteristics.

Additional radiation monitoralarmand/ortripsetpoints arecalculated forradiation monitorsmeasuring radioiodines, radio-activematerials inparticulate formandradionuclides otherthannoblegases.Setpoints aredetermined toassurethatdoseratesfromthereleaseoftheseeffluents shallcomplywithTechnical Specification 3.9.2.l.a(ii),

whichrequiresthatthedoserateforallradioiodines, radioactive materials inparticulate form,andradionuclides otherthannoblegaseswithhalf-lives greaterthan8daysshallbe<1500mrem/yrtoanyorgan.Thereleaseratelimitfornoblegasesshallbecalculated bythefollowing equationfortotalbodydose:

Equation(4):Qiv(uCi/sec)

Equation(5):500mremrKi(mrem/yrperuCi/m)~275v(sec/m)'andbythefollowing equationforskindoses:Qiv(uCi/sec)

Where:3000mremr(Li+1.1Mi)(mrem/yr peruCi/m)~~XQv(sec/m)KiThetotalbodydosefactorduetogammaemissions foreachidentified noblegasradionuclide, (inmrem/yrperuCi/m)fromTable2.LiTheskindosefactorduetobetaemissions foreachidentified noblegasradionuclide, (inmrem/yrperuCi/m)fromTable2.MiTheairdosefactorduetogammaemissions foreachidentified noblegasradionuclide, (inmrad/yrperuCi/m)fromTable2(unitconversion constantof1.1mrem/mrad convertsairdosetoskindose).X/QvThehighestcalculated annualaveragedispersion parameter forestimating thedosetothecriticaloffsite,receptorfromventreleasepoint(v)(insec/m).The~XQviscalculated bythemethoddescribed inReg.Guide1.111(reference 6).QivThereleaserateofradionuclide (i)fromvent(v)whichresultsinadoserateof500mrem/yrtothewholebodyor3000mrem/yrtotheskinofthecriticalreceptor, (inuci/sec).

Historically, xenon-133 istheprincipal noblegasreleasedfromallventsandisappropriate foruse*asthereference isotopeforestablishing monitorsetpoints.

Thewholebodydosewillbelimiting, andtheXe-133releaseratelimitiscalculated bysubstituting theappropriate valuesinequation(4)'.AfterthereleaseratelimitforXe-133isdetermined foreachvent,thecorresponding ventconcentration limitsarecalculated basedonapplicable ventflowrates.Annually-derived monitorcalibration factors(uCi/ccpercpm)convertlimitingventconcentrations tocountrate.

Containment Plant.VentandAirEectorNobleGasMonitorsMonitorsR-12R-14andR-15MonitorR-12measuresnoblegasactivityincontainment whenitisisolated, orinthecontainment ventduringpurgereleases.

NoblegasesbeingreleasedviatheplantventaredetectedbyR-14;MonitorR-15,ontheaire)ector,normallyindicates onlybackground noblegasactivity; howeveritservesasoneofthefirstindicators ofprimary-to-secondary leakage.1Additional noblegasmonitoring capability'or thecontainment, plantandaire)ectorventsisprovided'y high-range effluentmonitorsR-12A,R-14AandR-15A,respectively.

JNoblegasmonitorsetpoints areconservatively setinProcedure P-9tocorrespond tofractions oftheapplicable 10CFR20maximumpermissibleconcentrations (MPCs)forunrestricted areas.Fractions aresmallenoughtoassurethetimelydetection ofanysimultaneous discharges frommultiple'elease pointsbeforethecombineddownwindsiteboundaryconcentration couldexceedMPC.Additional conservatism isprovidedbybasingthesesetpoints uponinstantaneous downwindconcentrations.

Releaseratesduringtheremainder ofagivenyear,combinedwithanyinfrequent releasesatsetpointlevels,arelikelytoresultinonlyaverysmallfractionofthe10CFR20annuallimits.~Eamle:(PlantventmonitorR-14).UsingXe-.133asthecontrolling isotopeforthesetpointandassumingameasuredactivityat2.66E>>4uCi/cc,aratemeter readingof4750cpmabovebackground andaventflowof7.45E4cfm.Xe-133efficiency

=ActivitNetRatemeter ReadingXe-133efficiency 2.66E-4~5.6E-8~u3~c4750cpmQA(Ki)(X/Qv)

Qiv=500(2.94E2)(2~7E-6)~6.3E5uCi/sec setpointc~iv(f)(k)(K)6.3E5uCisec1.NOTE:7.45E4(cfm)472~cceec5.6E-S~ucicccfmcpmc3.2E5cpm(R-14issetat1/20ofthisvalue,perProcedure P-9or1.6E4cpmfornormaloperation).

Continuous radioiodine andparticulate monitoring ontheairejectorisnotrequired.

Calculations andplantmeasurements haveindicated thattheiodineandparticulate sourcetermsviatheairejectorcomparedtootherairbornereleasepathways, arenegligible.

(Seereferences 5,7,and8)

Radio-nuclideDQSEPARAM.'rKRS FORRADIOIODINES ANDRADICACPIVE PARPICUGQR GASKX3S1~IIJEHIS*

PiPiPiInhalatian PathwaFood&GroundPathwaysRadio-Inhalatian PathwayuCig+m2uCisecnuclideuCiPiFood&GradPathwaysQm2uCisecH-3C-14Cr51Rn-54Fe-59Co-58~0Zn-65Rb-86Sr-89S~OY-91Zr-95~5~9Ru-103Ru-106Ag-llQm6.5E+028.9E+033.6E+022.5E+042.4E+041.1E+043.2E+046.3E+041.9E+054.0E+054.1E+077.0E+042.2E+041.3E+042.6E+021.6E+041.6E+053.3E+042.4E+031.3E+091.1E+071.1E+097.0E+085.7E+084.6E+091.7E+101.6E+101.0E+109.5E+101.9E+093.5E+083.6E+083.3E+083.4E+104.4E+ll1.5E+10Od-115mSn-126Sb-125Te-127mTe-129mTe-132Cs-134Cs-136Cs-137Ba-140Ce-141Ce-144Hp-239I-131I-133V~mtified 7.0E+041.2E+061.5E+043.8E+043.2E+041.0E+037.0E+051.3E+056.1E+055.6E+042.2E+041.5E+052.5E+041.5E+073.6E+064.1E+074.8E+071.1E+091.1E+097.4E+101.3E+097.2E+075.3E+105.4E+094.7E+102.4E+088.7E+076.5E+082.5E+061.1E+129.6E+099.5E+10*'Thelisteddoseparameters areforradianuclides thatmaybedetectedingasecaseffluents.

'Iheseandadditianal doseparameters forisotopesnotincludedinTable1maybecalculated usingthemethodology described inNUR1H-0133, Section5.2.1(reference 2).

TABLE2DOSEFACTORSFORNOBLEGASESANDDAUGHTERS*

TotalBodyDoseFactorKirucim3JRadionuclide mremSkinDoseFactorLimrerucim3>GammaAirDoseFactorMimradrruCim3$BetaAirDoseFactorNimradruCim3$Kr-83mKr-85mKr-85Kr-87Kr-88Kr-89Kr-90Xe-131mXe-133Xe-133mXe-135mXe-135Xe-137Xe-138Ar-417.56E-02**

1.17E+031.61E+Ol5.92E+031.47E+041.66E+041.56E+049.15E+012.94E+022.51E+023.12E+031.81E+031.42E+038.83E+038.84E+031.46E+031.34E+039.73E+032.37E+031.01E+047.29E+034.76E+023.06E+029.94E+027.11E+021.86E+031.22E+044.13E+032.69E+031.93E+Ol1.23E+031.72E+Ol6.17E+031.52E+041.73E+041.63E+041.56E+023.53E+023.27E+023.36E+031.92E+031.51E+039.21E+039.30E+032.88E+021.97E+031.95E+031.03E+042.93E+031.06E+047.83E+031.11E+031.05E+031.48E+037.39E+022.46E+031.27E+044.75E+033.28E+03*Thelisteddosefactorsareforradionuclides thatmaybedetectedingaseouseffluents.

ThesedosefactorsfornoblegasesanddaughternuclidesaretakenframTableB-1ofRegulatory Guide1.109(reference 3).Asemi-infinite cloudisassumed.**7.56E-02=7.56x10

~~1aIII.LiidEffluentReleaseConcentrations Liquidbatchreleasesarecontrolled individually andeachbatchreleaseisauthorized andbaseduponsampleanalysisandtheexistingdilutionflowinthedischarge canal.Plantprocedures RD-7andRD-8establish themethodsforsamplingandanalysiso'eachbatchpriortorelease.Areleaseratelimitis'alculated foreachbatch.baseduponanalysis',

dilution'flowandallprocedural conditions beingmetbeforeitisauthorized forrelease.Thewasteeffluentstreamenteringthedischarge canaliscontinuously monitored andthereleasewillbeautomatically terminated ifthepre-selected monitorsetpointisexceeded.

(SeeSectionI)Ifgrossbetaanalysisisperformed foreachbatchreleaseinlieuofgammaisotopicanalysis, thenaweeklycomposite forprincipal gammaemittersandI-131isperformed.

Additional monthlyandquarterly composite analysesaretobeperformed asspecified inTable4.12-1oftheGinnaTechnical Specifications.

ITheequations usedtocalculate activity're:

GaaSectrometuCi/ccAct.eakareacounts-bkdcounts(CountTime)(Eff)(Vol)(T1/2 correction)(3.7E4)(Branching Fraction)

GrossBetaGamma:uCi/ccAct.totalcounts-bkdcounts(CountTime)(Eff)(Vol)(T1/2correction)

(3.7E4)where:counttimeisinseconds;effcountingefficiency, incountsersecdisintegrations persecvolvolume,inmilliliters; Tl/2correction decaycorrection factor,dimensionless; 3.7E4~conversion

constant, indisinteratonsersec;uciBranching fractionisthefractiondisintegrating byaparticular decaymode,dimensionless.

ZV.LiidEffluentDoseThedosecontribution receivedbythemaximally exposedindividual fromtheingestion ofLakeOntario'fishanddrinkingwaterisdetermined usingthefollowing methodology.

Thesecalculations willassumeanearfielddilutionfactorof1.0inevaluating thefishpathwaydose,andadilutionfactorof20betweentheplantdischarge andtheOntarioWaterDistrictdrinkingwaterintakelocated1.1milesaway(Figure4)..Thedilutionfactorof20wasderivedfromdriftanddispersion studiesdocumented inreference 4.Dosecontributions fromshoreline recreation, boatingandswimminghavebeenshowntobenegligible intheAppendixIdoseanalysis(reference 5)anddonotneedtoberoutinely evaluated.

Also,thereisnoknownhumanconsumption ofshellfish fromLakeOntario.Thedosecontribution toanindividual willbedetermined toensurethatitcomplie's withtheTechnical Specification require-mentsof3.9.1.2.a(i) and3.9.1,2.a(ii).

Thedoseordosecommitment toanindividual fromradioactive materials inliquideffluents releasedtounrestricted areasshallbelimited:(i)Duringanycalendarquarterto<1.5mremtothetotalbodyandto<5mremtoanyorgan,and,(ii)Duringanycalendaryearto<3mremtothetotalbodyandto<10mremtoanyorgan.Offsitereceptordoseswillbedetermined forthelimitingagegroupandorgan,unlesscensusdatashowthat~actuaoffsiteindividuals areofalesslimitingagegroup.'he following expression isusedtocalculate ingestion pathwaydosecontributions forthetotalreleaseperiod~tj1fromallradionuclides identified inliquideffluents releasedtounrestricted areas:Equation(6):D<Z[A~p~tjCijFj]1where:D<~thecumulative dosecommitment tothetotalbodyoranyorgan,z,fromtheliquideffluents forthetotaltimeperiod(inmrem).m&tjf1~tj=thelengthofthejthtimeperiodover,whichCiqandFjareaveragedforallliquidreleases, (inhours).10 Ci)Ai<the,averageconcentration ofradionuclide,

.i,inundiluted liquideffluentduringtimeperiod~t~fromanyliquidrelease,(inuCi/ml).the.site-related ingestion dosecommitment factortothetotalbodyoranyorgan'Cforeachidentified

,principal gammaandbetaemitter(inmrem/hrperuCi/ml).Seeequation(7)~F)thedischarge canaldilutionfactorforCiduringanyliquideffluentrelease.Definedastheratioofthemaximumundiluted liquidwasteflowduringreleasetotheaverageflowfromthesitedischarge structure tounrestricted

'receiving waters.Thedilutionfactorwilldependonthenumberofcirculation pumpsoperating and,duringicingconditions, thepercentage openingoftherecirculating gate.Reference curvesarepresented inplantprocedure RD-7.Equation(7):Aig=ko(Uw/Dw+UFBFi)DFiwhere:AigkoUwUFBFiDFithesite-related ingestion dosecommitment factortothetotalbodyortoanyorgan'Cfor.eachidentified principal gammaandbetaemitter,(inmrem/hrperGci/ml)~unitsconversion factor,1.14x1010pCi/uCix10ml/kg+8760hr/yr.areceptorperson'swaterconsumption byagegroupfromtableE-5ofRegulatory Guide1.109(reference 3).Dilutionfactorfromthenearfieldareaofthereleasepointtopotablewaterintake.Thesitespecificdilutionfactoris20.Thisfactorisassumedtobe1.0forthefishingestion pathway.areceptorperson'sfish,consumption byagegroupfiomtableE-5ofRegulatory Guide1.109.Bioaccumulation factorfornuclide,i,(infishpCi/kgperPCi/L),fromTableA-1ofRegulatory Guide1.109.Doseconversion factorfortheingestion ofnuclide,forareceptorpersoninpre-selected organ,7,(inmrem/pCi),

fromTablesE-ll,E-12,E-13,E-14ofRegulatory Guide1.109.11 Themonthlydosecontribution fromreleasesforwhichradionuclide concentrations aredetermined byperiodiccomposite sampleanalysismaybeapproximated byassuminganaveragemonthlyconcentration basedonthepreviousmonthlyorquarterly composite analyses.

However,intheradioactive effluentreleasereport(submitted within60daysofJanuary1perTechnical Specification 6.9.1.4)thecalculated dosecontributions fromtheseradionuclides shallbebasedontheactualcomposite analyses.

Examlewhchllustrates howtocomutethedosetotewholebodviathefshanddrinkiwaterathwasassuminaninitialCs-137dischareconcentration of3.0-4uCiml:Giventhefollowing discharge factors,where:=1hourCi)3'E-4uCi/ml170,000gpm20And,takingthefollowing valuesfromRegulatory Guide1.109whichconcernthereceptorofinterest, whichweassumeisthechildinthiscase:Uw510L/yearUF6.9Kg/year'BFi=2000pCi/kgperpCi/LDFi4.62E-5mrem/pCiThen,thesite-related ingestion dosecommitment factor,Aig,iscalculated asfollows:Aggm~remhrKo(Uw/Dw+UFBFg)DFguCi/ml1.14E5(510+F9'000)4'2E-520Aig7.28'4mrem/hrperuCi/ml And,thewholebody'dose tothechildisthen:D<mrem~(Aig)(~t~)(C~)(F~)'7~28E4)(1)(3~0E-4)(1.2E-4)Dg=2.6E-3mremtothewholebodyfromCs-137(Thedosecontribution fromanyotherisotopeswouldthenneedtobecalculated andsummed.)13 V.LiidandGase'ousRadwasteTreatment and0erabilitAnobjective oftheGinnaTechnical Specifications'which implement theoverallrequirements of10CFRPart50,AppendixI,istoensurethattheplantradwastetreatment equipment isusedandmaintained.

Thisequipment istobeutilizedtoreduceradioactive discharges fromnuclearplantstolevels"aslowasreasonably achievable" orALARA.ALARAlevelswarranting equipment operabil-ityhavebeendefinedbytheNRCintheformofmonthlydose"trigger" values.Thetriggervalues,whichareprovidedbelow,correspond toapproximately 1/48oftheannualdesignobjective dosesgivenby10CFRPart50,AppendixI.Ifcontinued atthisrate,thesemonthlydoseswouldcorrespond tojustunder1/4oftheAppendixIannualdesignobjectives.

LiquidGaseousRadwasteSstemRadwasteSstemVentilation Exhaust31-day0.06mrem(w.body)TriggerValues0.2mrem(anyorgan)0.2mrad(gammaair)0.4mrad(betaair)0.3mrem(anyorgan)Figures1and2showthecomponents of,theR.E.Ginnaliquidandgaseouswaste/ventilation exhaustsystems.Thesesystemsarenormallyinroutineuseattheplant.Becausedischarges arebeing~teated,thetriggervaluesintheTechnical Specifications maybeexceededbutcompliance withthestatedquarterly andannualdoselimitsisrequired.

Iftheliquidorgaseousradwaste/ventilation exhaustsystemsweretobeinoperable inexcess'of31days,theneffluents areconsidered "untreated" waste.Should,overa31-dayperiod,theplantdischarges exceedthedosetriggervaluesincon'unction withextendedinoperability ofawastetreatment system,thenTechnical Specifications 3.9.1.3.b and3.9.2.3.c apply.Inthiscase,a30-dayreportmustbesubmitted totheCommission whichidentifies theinoperable equipment anddescribes appropriate corrective actions(seeTechnical Specifications 3.9.1.3.b and3.9.2.3.c).

~Examle:Assumeacasewhereplantmodifications wereunderwayonthewasteevaporator anddemineralizer piping,andareduction oftheliquidwastevolumecontained inthewasteholduptank(WHUT)wasneeded.Assumingnoothermeansoftreatment werereadilyavailable, WHUTliquid(untreated) mightbetransferred tothewastecondensate tanks,sampledandthendischarged onacontrolled basis.

Inthiscase,assumealsothatadecisionwasmadetoproceedthiswayatthebeginning ofagivenmonth,knowingthatthewasteevaporator andotherportionsoftheliquidradwastetreatment systemwouldbeunavailable forthenext45days.Thefollowinmethodwouldbeusedtodetermine theneedora30-dareort:2~3~4~5~6.Usingexistingplantprocedures, sampletheconcentration contained intheWHUT(Ci~).Decideasamplefrequency (e.g.1/day)sincethetankconcentration couldchange.Determine thepermissible releaseratetomaintaintheconcentration inthedischarge canalwellwithintheappli-cablemaximumpermissible concentration (e.g.1/100-1/10 MPC)forthemixture.(Thedischarge canalconcentration isequaltoCi~F~).Calculate theincremental dosefromallidentified isotopesviathedrinkingwaterandfishingestion pathwaysforeachreceptorgroup.Thecriticalreceptorwillprobablybethechild.Assumethereleasewillbecontinuous andthatdoseswillbeevaluated eachday,corresponding totheWHUTsamplingfrequency.

(WethuscomputeDusingEquations 6and7,taking~t~asthedurationofeachrelease;inthiscase,24hr/day.)Theoffsitereceptordoseduetoacontrol'led discharge oftheWHUTcontentsisthusdetermined andcumulated overeachdailyreleasetimeinterval.

IftheWHUTisotopicmixtureandthedischarge canaldilutionfactoryFggarerelatively

constant, theneachday'sdoseincrement shouldbeapproxi-matelythesame.Onecanthenestimatethenumberofreleasedaysitwilltaketoreachtheapplicable dosetriggervalue.The30-dayreporting requirement appliesifaradwaste'reatment systemisinoperable

~adosetriggervaluesareexceeded.

Intheexample,onereporting criterion isalreadymet,sincethetreatment

.systemswillbeoutofserviceformorethan31days.Ifwedetermine thattheliquidpathwaydosedoesnotexceedthetriggervalues.in31daysorless,thena30-dayreportisnotrequired.

However,ifaliquidpathwaydoseattainsatrigger.levelwithin31days,thenareportsubmittal wouldberequired.

Inthelastcase,itwouldbeprudenttoavoidasituation requiring the30-dayreport.First,atriggerleveldose,whenaddedtothecalculated dosesresulting fromallotherliquidreleasesources(e.g:highconductivity wastetank,blowdown, retention tank),maysignificantly impactupontheplant's"dosebudget"forthecalendarquarterorthecalendaryear.Also,morerealistically, othertreatment optionswouldlikelybeavailable attheplantandcouldbeutilized.

15 GIHNASTATIOHLIQUIDWASTETREATMENT SYSTEHFIGURE1ENTRESINSTORAGETANKSREACTORCOOLAHTDIHNKCONTAIHHEHT SUHP"h"CHEHICALDRAINTANKLAUHORY4llOTSHOWERTANKSS/GBLOMDOMHVAHKDRAINAUX.4INTEiNEDIATE BLDG.DRAIHSBLOWDOWNSAHPLELIHEr-.--OHONITORR-19IRECYCLES/GBLOWDOWHLINQTOllOTWELL~

HIXEOBEODI'WASTEIlOLDUPTANKASTEEVAPORATO llIGllONOUCTIVITY WASTETANKHONITORR-22-grCIRCULATING WATERDISCllARGE

/I'IIIIIHIXEDBEDDIWASTECONDENSATE TANKTURBINEBLDGDRAINS~SERVICEHATERHONITOR'-21 SFPHXCVPANCOOLERHONITORR-20HOHITORR-16HONITORR-18'WASTECOHDEHSATE TANK G)HNASTATHiNGASEOUSWASTETREATHEtlT AND,VENTIt ATIONIXllhU'l'YSTEHS FIGURE2AUXILIARY BUILDINGVEHTILATIOH SYSTEN"G"FILTERS "C"FILTERS MONITORSR-108,13,1i,lih PLANTVEHT"h"FILTERS CASFOUSWASTETRFATHEHT SYSTFACVCSWASTEGAS'COHPRESSORS l2GASDECAYTANKSII.Ip,l.ToemNTVENTHONITORSCONTAINHENT PURGECONTAIHHENT CFNONITORSR-lohtll1212ACONTAINMENT VERNONITORSR-15~R-15ACOHDFNSER AIREJECTOROFFGASVENTNOTE-hIIEPAFILTi'.RS C~CNARCOAL FILTERSF~FANS yZ.GaseousEffluentDoseRateGaseouseffluentmonitorsetpoints asdescribed inSectionjZofthis'anual areestablished at.concentrations whichpermitsomemarginforcorrective actiontobetakenbeforeexceeding offsitedoseratescorresponding to10CFRPart20limitations.

Plantprocedures RD-l.l,RD-1.2,RD-2,RD-3,RD-5andRD-12establish themethodsforsamplingandanalysisforcontinuous ventilation releasesandforcontainment purgereleases.

Plantprocedure RD-6establishes themethodsforsamplingandanalysispriortogasdecaytankreleases.

Theinstantaneous doserateinunrestricted areasduetounplanned releasesofairborneradioactive materials maybeaveragedovera24-hourperiodaccording toTechnical Specification 3.9.2.1.b.

Doserateshallbedetermined usingthefollowing expressions:

Fornoblegases:Equation(8):DP[Ki(X/Q)>>Qi>>](500mrem/yr(tototalbody)Equation(9):D)f[(Li+l.lMi)(X/Q)>>Qi>>]53000mrem/yr(totalgammaandbetados'etotheskin)Forradioiodines, radioactive materials inparticulate form,'andradionuclides otherthannoblegases:Equation(10):Dp[PiW>>Qi>>]51500mrem/yr(critical organ)KiLi=Mi=PiThetotalbodydosefactorduetogammaemissions foreachidentified noblegasradionuclide, (inmrem/yrperuCi/mfromTable2).Theskindosefactorduetobetaemissions foreachidentified noblegasradionuclide, (inmrem/yrperuCi/m3fromTable2).Theairdosefactorduetogammaemissions foreachidentified noblegasradionuclide, (inmrad/yrperuCi/mfromTable2),(unitconversion constantof1.1mrem/mrad convertsairdosetoskindose).Thedose,parameter forradionuclides otherthannoblegasesfortheinhalation pathway,inmrem/yrperucigm3andforfoodandgroundplanepathways, (inmmrem/yrperuci/sec)fromTable1.Thedosefactorsarebasedonthecriticalindividual organandmostrestrictive agegroup.,18

(~/0)vWv=<iv=Thehighestcalculated annualaveragerelativeconcen-trationforanyareaatorbeyondtheunrestricted areaboundary, (insec/m).Thehighestannual.averagedispersion parameter forestimating thedosetothecriticalreceptor; (insec/mfortheinhalation pathway,andinmforthefoodandgroundpathways).

Thereleaserateofradionuclide ifromvent(v),(inuCi/sec),

19 VII.GaseousEffluentDosesTheairdoseinunrestricted areasduetonoblegasesreleasedingaseouseffluents fromthesiteshallbedetermined usingthefollowing expressions:

Duringanycalendhryear,forgammaradiation:

Equation(ll):D<3.17x108E[Mi(X/Q)vQiv]<10mrad,andiDuringanycalendaryearforbetaradiation:

Equation(12):Dp=3.17x10-8C[Ni(X/Q)vQiv]-20mradiWhere:Mi=Theairdosefactorduetogammaemissions foreachidentified noblegasradionuclide, (inmrad/yrperuCi/mfromTable2).Ni(X/Q)vTheairdosefactorduetobetaemissions foreachidentifiednoblegasradionuclide, (inmrad/yrperuCi/mfromTable2).Forventreleases.

Thehighestcalculated annualaveragerelativeconcentration foranyareaatorbeyondtheunrestricted areaboundary, including uninhabited areas,(insec/m).Thetotalgammaairdosefromgaseouseffluents, (inmrad).DpThetotalbetaairdosefromgaseouseffluents, (inmrad).QivThereleaseofnoblegasradionuclides, i,ingaseouseffluents fromallvents,inuCi.Releasesshallbecumulative overthetimeperiod.3.17x10"=Theinverseofthenumberofsecondsinayear..Thedosetoanindividual fromradioiodines andradioactive materials inparticulate formwithhalf-lives greaterthan8daysingaseouseffluents releasedfromthesitetounrestricted areasshallbedetermined usingthefollowing expression:

Duringanycalendaryear:Equation(13):DI3.17x10X.Ri[WvQiv],<15mradi20 Where:~iv=Dz-WvRi~Thereleaseofradioiodines, andradioactive materials inparticulate formingaseouseffluents, i,withhalf-livesgreaterthan8days,(inuCi).Releasesshallbecumulative overthedesiredtimeperiodasappropriate.

Thetotaldosefromradioiodines andradioactive materials inparticulate formwithhalf-lives greaterthan8daysingaseouseffluents, (inmrem).,Theannualaveragedispersion parameter forestimating thedosetoan'ndividual atthecriticallocation; (insec/mfortheinhalation pathway,andinm"forthefoodandgroundpathways).

Thedosefactorforeachidentified radionuclide, i,(inm'rem/yrperuCi/secormrem/yrperuCi/mfromTable9).21 VIIX,Environmental MonitorSamleLocations Figure3showstheonsite*indicator samplelocations forairborneparticulates, radioiodine anddirectradiation.

Respective samplelocations arespecified below.Alsoindicated onFigure3isthe.onsitevegetable garden,aswellastheplacement ofpost,.-'ccident TLDs(locations 13-24).Theonsitegardenislocatedneartheclosestresidentwhoisthemaximally exposedindividual.

Figure4givesthelocationoftheonlymilkherdswithin5milesoftheplant.OnthismapisalsoincludedtheOntarioWaterDistrictintakepumpingstationwherelakewaterissampledprior,totreatment.

Figure5showstheoffsitecontrolsamplelocations forairborneparticulates, radioiodine anddirectradiation.

Samplestations9andllaresituatednearpopulation centers(WebsterandWilliamson) locatedapproximately 7milesfromtheGinnasite.KetoFiures3to5:~TeRadioiodine:

Particulate:

DirectRadiation:

~Locatio3onsite3offsite7onsite5offsite¹2,¹4and7¹9,¹ll,and¹12¹2g3/4I5@6I7and13¹8,9,10,lland12TLD18onsite104-5milesll>5miles3r4I14(15)16I17I18I19'0I21I22I23and24¹31I32I33/g34g35~36I37I38I39and40¹Sg9I10Illew12I25'6~27I28I29and30SurfaceWater1control(RussellStation)1indicator (GinnaCondenser HaterDischarge)

  • Note:"Onsite"referstotheareasurrounding theGinnaplantboundedbyRG&Epropertylines."Offsite" referstotheareabeyondtheimmediate RGGEproperty.

22 DrinkingWaterMilkFishFoodProducts1indicator (OntarioWaterDistrictIntake)1control(N4)3indicator (Nl,2,3)4control(offshore atRussell)4indicator (offshore atGinna)1control2indicator (onsite)23 FIGURE3LAKLONTAR)OOnsideGarden-2a~rrrtCJ)f-/(rgOlsgfSt'SAHoOI l3l7g42IIt~~(oScaleONSITEAIRHONITORPOST-ACCIDENT TLD0=200400600~$(INet:ers tIIeighlsIndVewHeiIIhleICrescentBejchilater~leStationMill:Sar<pieStationWEST1ott~(egasPNF0nfibtdghtob8o>X<LAKE0NTARIo2.I5M)LEWltISONQllAh0LWO'lOMlLESSo4eNQ0US I'IGURL'QI215:5>>zlRONGINNA.......IJ

.I'ROMGINNA./12.4HZ8UTLDSPI.ACEDOFFSITE.~-0>>Saut(OaalulLa>>i~In~I~luraa~\liui>>aaRo.ZSaa(tsalaltAu0a~InIu~II~u~ln.Vaaa>>FtIu320OolsQslAoaNS<mAo.~~Oui(aato~zCsauaaasAQ~Iap!!asst'n..IaKl>>so>>kuna":"ge'atfasQtaAo0~II~Iun;n'qbKasul(o~~nallAslI(nnl(.!DnS>>05lalaO>>lranuu0lI*IaaaRavel)ag(liuCal~SIIVS~uIlasts~I~s.'~I4au\yu26laaa>>aAoII~I'Ianaan'l(aaIAQFnu-""a.IFIOaa(a>>IFAounAsIa>>IIlAal.CaJQIOatotI'~taaCJ~nI'~'3a)AAII(A(ll(si~Whl5li!III0

~r~e~4g~latr.-IIIIIII~N,WIQfIe-I<"'le1'.w~HQ~~a4gi%/fgyjgggj$/1~~ggg4gJ4hi1(gFig/X)ll+tl~~--I='<

~~I0~~~I~~~j rALrLDISPERSION PARAMETER (D0)FORLONGTERMRELEASES>500JIRYROR>125llRQTR.PlantVentDistancetothecontrollocation, inmilesSector*0-0.50.5-1.01.0-1.51,5;2.02.0-2.52.5-3.03.0-3.53.5-4.04.0-4.5'4.5-5.0JJYENEES"SSESSHhSl4hIg8.3E-81.7E-84.5E-B1.0E-86.5E-&1.5E-88.3E-81.8E-81.4E-72.9E-81.4E-73.0E-81.3E-72.7E-85.8E-81.4E-B2.8E-&&.6E-93.1E-B7.8E-94.SE-B1.0E-B5.6E-B1.3E-84.2E-B1.0E-82.2E-85.9E-91.5E-&4.1E-94.0E-89.2E-96.1E-93.7E-95.4E-96.4E-91.0E-81.1C-89.3E-94.7E-93.1E-93.1E-93.6E-94.6E-93.9E-92.4E-91.7E-93.5E-91.3E-95.9E-101.5E-96.8E-101.8E-98.4E-101.6E-97'E-.101.0E-94.7E107.0E-103.3E-101.4E-96.6E102.5E-.91.2E-.91.5E-97.0E-102.2E-91.0E-92.6E-91.2E-94.2E-91.9E-94.3E-91.9E-93.7E-91.7E-91.9E-98.9E-101.3E-9S.&E-107.3E-104.4E-106.5:E-107.5E-101.2E-91.2E-91.0E-95.6E-103.8E-lo3.7E-104.4E-105.3E-104.7E-103.0E-102.1E-104.2E-105.1E-104.1E-.lo2.9E-103.1E-102.4F.-.loL.BL-104.5E103.6E-lO2.6E-105.3E>>104.1E-lO3.1E-lO8.6E-106.7E-104.8E-108.7E-106.7E-105.2E-107.7E-106.1E-104.6E-104.1E-103:5E-102.7E-102.9E-102.4E-101.8E-102.,7E-102.2E-101.8E-103.1E-102.5E-101.9E-103.7E-102.9E-102.1E-103.3E-102.6E-101.9E-102.1E-101.7E-101.3E-101.5E-101.2E-108.8E-ll2.9E-102.3E-101.7E-102.5E-10l.5E-102.2E-102.6E-104.1E-104.5E-104.0E-102.3E-101.6E-10l.5E-10l.6E-10l.8E-10l.6E-101.0E-107.4E-lll.4E-10*Direction windblowsinto

~~~~~~s'aII~~~

~i~~~~Ia~~ee

~~~~I~~~~lIIe~~~~~

't'AuLEDISPERSION PARAMETER (D0)FORLONGTERMRELEASES>500lfRYROR>125HR/OTRGroundVentDitancetothecontrollocation, inmilesSectorNNENESSESSHS'HhSM0-0.52.0H-7l.8E-72.5H-72.1H-72.5E-72.2E-71.8E-79.8E-86.8E-06.7E-07.6E-09.9E-01.1E-78.9E-B7.0E-81.2E-70.5-1.03.7H-B3.4E-04.5E-B3.9E-04.6E-84.1E-B3.7E-B1.8E-81.3E-81.2E-81.4E-81.8E-02.0E-81.6E-B1.3E-81.2E-81.0-1,51.2E-81.1E-81.5E-01.3E-01.5E-B1.3E-B1.1E-&6.0E-94.2E-94.1E-94.7H-96.1H-96.7E-95.4E-94.3E-97.1E-915-2.02.0-2.55.0H-92.3H-94.5H-92.1H-96.1E-92.8E-95.3E-92.4E-96.2E>>92.8H-95.5E-92.5H-94.5E-92.1E-92.4E-91.1E-91.71.71.9E-97.7E-loH-9H-97.6E-100.6E-lo1.5H-91.1H-92.7E-91.2E-9'.2E-91.0E-91.7E-97.9E>>lo1.9E-91.3E-9'.5-3.01.4H-91.3H-91.7'H-91.5E-91.7H-91;6E-91.3E-96.8H-104.0E-104.7H-lo5.5H-lo6.9H-lo7.5E-lo6.3E-lo4.9H-lo8.1E-lo3.0-3.53.5-4.04.0-4.59.7E-lo7.6E-lo5.5E-109.0L-lO6.9E-lO5.0E-lo1.1E-91.0E-99.2E-lo6.9E-100.0H-lo6.0E-10l.2H-9.9.4E-107.0E-101.1E-9'.4E-lo6.3E-109.0H-106.9E-lo5.1E-lo4.8E-103.7E-102.7E-103.3H-102.6E-101.9.E-lo3.3H-102.5H-lo1.8E-103.8E-102.9E-102.1E-104.9E-lo3.7E-102.0E-105.4H-104.1E-103.0E-104.3H-103.3E-102.5E-103.4E-102.6E-102.0E-105.7E-104.4E-103.2E-104.5-5.O4.7E-1O4.3E-105.8E-105.0E-i.O5.8E-lo5.2E-104.3E-102.3E-101.6E-101.5E-101.-7E-102.3E-102.5E-102.1E-101~6E-102.7E-10*Direction windblowsinto TABLE9PATHWAYDOSEFACTORSDUETORADIONUCLIDES OTHERTHANNOBLEGASES*Radio-nuclideInhalation PathwayRi(mrem/yrMeatPathwayRi(m2mrem/yreruCisecGroundPlanePathwayRi(m2.mrem/yrCow-Milk-Infant PathwayRi(m2mrem/yrLeafyVegetables PathwayRi(m2mrem/yrH-3CR-51MN-54FE-59CO-58CO-60ZN-65SR-89SR-90ZR-95I-131I-133CS-134CS-136CS-137BA-140CE-1411.12E031.70E041.57E061.27E061.10E067.06E069.94E05215E061.01E082.23E061.62E073'4E061.01E06171E059.05E051-74E065.43E052.33E024.98E057.60E066.49E089.49E073.61E081.05E094.89E081.01E106.09E082.60E096.45E011.42E095.06E071.27E095~OOE071.45E070.5.31E061.56E093.09E084.27E082.44E108.28E082.42E0402.73E081.01E071.43E067.70E091.64E081.15E102;26E071.48E072.38E035.75E063.70E074.01E087.01E072.25E081.99E101.28E101.19E108.76E054.95Ell4.62E096.37E106.61E095.75E102.75E081.43E072.47E021.63E065.38E071.10E084.55E071.54E082.24E085.39E099.85E101.13E082.08E103.88E081.96E091.60E081.80E092-03E088.99E07*Additional dosefactorsforisotopesnotincludedinTable9maybecalculated usingthemethodology described inNUREG-0133, Section5.3.1(reference 2).

~g4~'l~IX.PrearationofSecialReorttoDemonstrate ComliancewithEnvironmental Radiation protection Standards

/GinnaTechnical Specification 3.9.arequiresthepreparation andsubmittal ofaSpecialReporttotheCommission whencalculated effluentreleasedosesexceedtwicethelimitsofSpecifications 3.9.1.2.a, 3.9.2.2.a or3.9.2.2.b.

Inaddition, subsequent releasesaretobe*limitedsothatthedoseordosecommitment toarealindividual fromalluraniumfuelcyclesourcesislimitedto<25mremtothetotalbodyoranyorgan(exceptthethyroid,whichislimitedto<75mrem)forthecalendaryearthatincludes.therelease(s) intheSpecialReport.Thisincludesthedosecontributions fromthecalendarquarterinwhichthelimitswereexceededandthesubsequent calendarquarterswithinthecurrentcalendaryear.IThefollowing generalguidelines arepresented forpreparation oftheSpecialReport:1)Themaximally exposedrealmemberofthepublicwillgenerally bethesameindividual considered intheTechnical Specifi-cation.2)Dosecontributions tothemaximally exposedindividual needonlybeconsidered tobethoseresulting fromtheGinnaplantitself.Allotheruraniumfuelcyclefacilities oroperations areofsufficient distancetocontribute anegligible portionoftheindividual's dose.3)Fordetermining thetotaldosetothemaximally exposedin".ividual fromthema)orgaseousandliquideffluentpa'hwaysandfromdirectradihtion, doseevaluation techniques usedinpreparing theSpecialReportmaybethosedescribed inthismanualorotherapplicable methodswhereappropriate.

4)Thecontribution fromdirectradiation maybeestimated byeffluentdispersion modelling orcalculated fromtheresultsoftheenvironmental monitoring programfordirectradiation.

35

~tX.References IRochester GasandElectricCorporation, Docket50-244.USNRC,PrearationofRadioloical.EffluentTechnical Secifications forNuclearPowerPlants,NUREG-0133 (October, 1978)~2~1,R.E.'inna NuclearpowerPlantUnitNo.l,AendixAto0eratinLicenseNo.DPR"18Technical Secifications 3~USNRC,Calculatio ofAnnualDosestoManfromRoutineReleasesofReactorEffluents foreoseofEvaluatin Comliancewith10CFRPart50Aendx,Regulatory Guide1.109,Revision1(October, 1977).4.R.E.GinnaNuclearPowerPlant,vonmentalReort,AppendixB(August,1972).5.R.E.GinnaNuclearPowerPlant,CalcuationstoDemonstrate CoiacewiththeDesiObectveso0CRPart506~1977).USNRC,MethodsforEstimatin AtmoshecTransortandDisersionofGaseousEffluents nouteReleasesfromLiht-Water-Cooled

Reactors, Regulatory Guide1.111,Revision1(July,1977).7.R.E.GinnaNuclearPowerPlant,IdetvauationGinnaSteamGenerator TubeFailueIncdentJanua251982,Rochester'Gas andElectricCorporation, (April12,1982).8.Pelletier, C.A,et.al.,SourcesofRadioodieatPressurized WterReactors, EPRINP-939(November, 1978).36
Retrieved from "https://kanterella.com/w/index.php?title=ML17262A977&oldid=743138"