ML17037B552

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Nine Mile Point Unit 1 - Letter Responding to 04/06/1976 Letter Requesting Radioactive Methyl Iodide Decontamination Test Information for the Emergency Ventilation System
ML17037B552
Person / Time
Site: Nine Mile Point Constellation icon.png
Issue date: 06/02/1976
From: Rhode G K
Niagara Mohawk Power Corp
To: Goller K R
Office of Nuclear Reactor Regulation
References
Download: ML17037B552 (12)


Text

NRCronM195I2.7B)V.S.NUCLFARREGULATOR.IMISSIONDOC~+TNUMBER+O-QQ,C)NRCDISTRIBUTIONroRPART50D+rKFTMATERIALIILENUMBERTO:MRKRGOLLERLETTER+ORIGINALQCOPVONOTORIZEDgVNCLASSIFIEDFEIDM:NIAGARAMOHAWKPOWERCORPSYRACUSE,NYGKRHODEINPUTFORMDATEOFDOCUMENTD*T>R>c>lv.D>1(NUMBEROFCOPIESRECEIVEDDESCRIPTIONLTRREOUR5-6-76LTR"-TRANS'HEFOLLOWRlo.......F.NCLOSURERESPONSESTOAPRIL6p1976NRCQUEST10NS......lIDONOTRZMPVZ>>~sT~>>>.:kX,~~,~iI>e,v4.<ACKNOWLZDgZDSAX>>TYASSIGNEDAD:BRANCHCHIEF:PROJECTIMAGER:LIC.ASST.:Q<niiFORAC1ION/INFORMATIONASSXGNEDAD:BRANCHCHXEF:PROJECTMANAGER:LIC.ASST.:REGFILEICEOELDGOSSICK5STAFFlHPCCASEEEANAUERHr,l".sTMANAGEMENTPCOLLINS1iOUSTONPL7HHSONFED'/EEI"LTEMESSKOVHOLTLPDR:DSM~+3)~'1'Tr,'NSIOASLB>>cnsIInor,>>1;>ias>>>>>>INTERNALDSYSTEI43S!~w..EEEXNEIMANSCHHOEDERENGINEERINGKNIGEITPAWLXCKXREACTORSAFETYHOSSNOVAKHOSKTOCKYCHECKAT6ISADiZMANHUTBEHGEXTERNALDISTRI8UTIONHEG.V-IELAVOreCONSULTAIfl'SISTRI8UTION'LANTSYSTEMSTEDESCOBENAROYAIPPOLITOOPERATINGHEACTOSSTELIQOPERATINGTECFEEISEMGJTSFEAOBAEreSCHWENCERGHIIlESSITESAT>>"PY8eWVXHOANALY~>XSDpi'y~yg'rP>;I'.ULNAE>BleOOKlrAVEN11ATLLABULIniXON(OmrLRVXHOTECEl'ALLARrSITETECHGAMMILLSTEPPEIULMANSXTEANALYSXSVOLLMERBUNCFrJ.COLLINSKREGERCONTROLNUMBER

~~~~~yf NIAGARAMOHAWKPOWERCORPORATIONNIAGARA~MOHAWK300ERIK60ULKVARDWESTSYRACUSE,H.Y.13202'8Kw~June2,l976Uo$IPJCISARRICIMT02T,COhNISSlOIIhe/Rdl2TDirectorofNuclearReactorRegulationAttn:Mr.KarlR.Goller,AssistantDirectorDivisionofOperatingReactorsU.S.NuclearRegulatoryCommissionWashington,D.C.20555Re:NineMilePointUnitDocketNo.50-220DPR-63

DearSir:

YourApril6,l976letterrequestedradioactivemethyliodidedecontaminationtestinformationfortheEmer-gencyVentilationSystematNineMilePointUnitl.Theattachedresponsesaddressthequestionscontainedin'thatletter.Sincerely,NIAGARAMOMWK"POWERCORPORATIONEMERALDKODEVicePresident-ngineering/szAttachment5888

$~y'lgfcmw<g'I~%4ILhpICll RESPONSESTOAPRIL6Il976NRCQUESTIONSNINEMILEPOINTUNITlDOCKETNO.50-220DPR-63R~euest1Thedatethesampleof'harcoalwasobtained,andthemethodunderwhichitwasobtained(eg,canisterandgrainthief').a.l0/29/73-Cartridge,EmergencyVentilationSystemb.l0/27/75-Cartridge,EmergencyVentilationSystemR~euesL2Thetimeintervalthecharcoalhadbeeninstalledinthesystem,andtheapproximatenumberofhourstheappropriateESFsyst'mhadbeeninoperationwiththetestedcharcoal.Resonse2Thesampleswereobtainedbyremovalofcartridgesinstalledatthetimeoftheinitialbedloading.Thecartridgescontainedcharcoalfromthatloading.Initialplantcriticalitywasachieved9/5/69.a.Timeinterval:'0/29/73sample:Approximatelyfourcalendaryearsl0/27/75sample:Approximatelysixcalendaryears

b.approximatenumberofhours:Priorto10/29/73sample:10hrs/yearx5years*=50hoursPriorto10/27/75sample:50hrs(priorto10/73sample)+10hrs/yrx2yrs(testing)+20hrs(purgepriorto1974outage,est.)+41hrs(purgepriorto1975outage,actual)131hours.s*Includesinitialplantstartuptimeplusfourcalendaryears.~ReuesC3Thelaboratorythatperformedtheradioactivetest.NuclearContainmentSystems,Inc.P.O.Box19827Columbus,Ohio43129(614)252-1420R~euese4Thetestagent(ie,elementaliodineormethyliodide).Resonse4a.10/'29/73-Elementaliodineandmethyliodide'b.10/27/75-Methyliodide

R~euest5Thetestconditions(eg,temperature,relativehumidity,inletconcentrationanddurationoftest).TestresultsshouldindicatewhetherRDTM16-ITprocedureswerefollowed.ThetestconditionsofRDT816-IT,includingtemperature,relative'humidity,inletconcentrationandtestduration,werefollowedusingthefollowingoptions:a.10/29/73sample:25Cgambientpressure,70~relativehumidityb.10/27/75sample:190F,oneatmosphere,958relativehumidity~Reuest6Theremovalefficiencyobtained,andtheexperimentalerror(ifknown).a.10/29/73EmergencyVentilationSystemCartridge81"depth99.96'.iodineremoved92.W'ethyliodidedecontaminated82"depth100.000iodineremoved99.0Cmethyliodidedecontaminated10/27/75II11EmergencyVentilationSystemCartridge82"depth97.82K'ethyliodidedecontaminatedTheexperimentalerrorwasnotknown.

R~euest7Anyunusualoperationconditionsorotherinformationyoumayconsideruseful.None.

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