ML17328A190

Forwards Addl Info Re Radiation Monitoring Sys Per NRC Request.Description of How Gaseous Radioactive Monitor Readings Corrected & Calculation to Determine If Monitor Can Survive post-accident Environ,Per Info Notice 86-030,encl

ML17328A190
Person / Time
Site:	Cook
Issue date:	10/05/1989
From:	ALEXICH M P INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	MURLEY T E NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
RTR-NUREG-0737, RTR-NUREG-737 AEP:NRC:0856X, AEP:NRC:856X, IEIN-86-030, IEIN-86-30, NUDOCS 8910160287
Download: ML17328A190 (12)

Text

3]STKBUTION'EMONSTRkTIOYiSYSTEMREGULATOIINFORMATIONDISTRIBUTION'STEM(RIDE)I~~'CCESSIONNBR:8910160287DOC.DATE:89/10/05NOTARIZED:NODOCKETFACIL:50-315DonaldC.CookNuclearPowerPlant,Unit1,Indiana60500031550-316DonaldC.CookNuclearPowerPlant,Unit2,Indiana605000316AUTH.NAMEAUTHORAFFILIATIONALEXICH,M.P.IndianaMichiganPowerCo.(formerly.Indiana6MichiganEleRECIP.NAMERECIPIENTAFFILIATIONDocumentControlBranch(DocumentControlDesk)

SUBJECT:

ForwardsaddiinforeradiationmonitoringsysperStaffrequest.DISTRIBUTIONCODE:AOOSDCOPIESRECEIVED:LTRJENCLLSIZE:TITLE:OR/LicensingSubmittal:AppendixINOTES:RECIPIENTIDCODE/NAMEPD3-1LAGIITTER,J.INTERNAL:NRR/DREPDIR10ENUDOCS-ABSTRACTOGC/HDS1.RGN3DRSS/RPBEXTERNAL:EGGGSIMPSON,FNRCPDRCOPIESLTTRENCL1'1110-1110112211I.RECIPIENTIDCODE/NAMEPD3-1PDNRR/DREP/RPB10OC/LFMBILE0LPDRCOPIESLTTRENCL5522101111hDRDShNCTE'IOALL'KIDS"R!KIPIHGS:PIZASEHELPUSTOREDUCETASTE!CCkKACZ'IHEDOCXJMEÃl'XÃIBOLDESK,KXMPl-37(EXT.20079)XOElZHZHAXEYOUR5AMBPBCMDIPIVGBVTIONLISTSFOR~IMENISYOUDGNFTNEED!ITOTALNUMBEROFCOPIESREQUIRED:LTTR19ENCL15 IndianaMichiganPowerCompanyP.O.Box$6631Coiumbus,OH432168AEP:NRC:0856XDonaldC.CookNuclearPlantUnitNos.1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74NUREG0737,SECTIONII.F.1-2U.S.NuclearRegulatoryCommissionATTN:DocumentControlDeskWashington,D.C.20555ATTN:T.E.MurleyOctober5,1989

DearDr.Murley:

Thisletterprovidesadditionalinformationregardingradiationmonitoringsystemsasrequestedbyamemberofyourstaff.TheinformationsupportsourprevioussubmittalAEP:NRC:0678Y,datedJuly23,1986,andisprovidedonthetwoattachments.Attachment1isadescriptionofhowthegaseousradioactiveeffluentmonitorreadingsarecorrectedfordecayforthepurposeofoff-sitedosecalculation.Attachment2isacopyofaninternalcalculationtodetermineiftheradiationmonitorcouldsurviveinapostaccidentenvironmentperIEInformationNotice86-30.ThisdocumenthasbeenpreparedfollowingCorporateproceduresthatincorporateareasonablesetofcontrolstoensureitsaccuracyandcompletenesspriortosignaturebytheundersigned.Verytrulyyours,M..AlxichVicePresidentedgAttachmentscc:D.H.Williams,Jr.A.A.Blind-BridgmanR.C.CallenNFEMSectionChiefG.CharnoffNRCResidentInspector-BridgmanA.B.Davis-RegionIII8910160287891005PDRADQCK05000315PPNU ATTACHMENT1AEP:NRC:0856X Attachment1toAEP:NRC:0856XPage1TheresponseoftheEberlineSPINGgaseouseffluentradiationmonitor(low-,mid-,andhigh-rangechannels)wascalculatedasafunctionoftimeforapostulatedaccident.Theresponseofthedetectorstothepost-accidentgasmixturewasdeterminedbyutilizingtheprimarycalibrationefficienciesofeachdetectortype.Theresultoftheanalysisprovidedtablesofpost-accidentdecaycorrectionfactorswhichcanbeappliedtotheradiationmonitoringchannels.Thesecorrectionfactorshadbeeninsertedintoandmadepartofouroffsitedoseassessmentcomputercode(DAP).DAPestimatesoffsitedosestothewholebodyandthyroidresultingfromplantreleases.Theuserispromptedtoinputthefollowinginformation:meteorologicaldata,radiationmonitorreading,timeofreactorshutdown,durationofrelease,effluentflowrates,andthetypeoftheaccidentthatwouldbeconsidered.Duringtheprocessofcalculatingtheestimateddoses,thecomputercodeautomaticallyretrievesthegasmixturedecayfactor,whichisadimensionlessmultiplier,fortheappropriatemonitorreading.

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REFERENCES:

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