ML18037A079: Difference between revisions

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=Text=
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{{#Wiki_filter:ACCELERATEDDISTIUBUTIONDEMONST$QTIONSYSTEMREGULATORYINFORMATIONDISTRIBUTIONSYSTEM(RIDS)'ACCESSIONNBR:9112260334DOC.DATE:91/11/12NOTARIZED:NOFACIL:50-237DresdenNuclearPowerStation,Unit2,CommonwealthE50-249DresdenNuclearPowerStation,Unit3,CommonwealthEAUTH.NAME,AUTHORAFFILIATIONEENIGENBURG,E.CommonwealthEdisonCo.RECIP.NAMERECIPIENTAFFILIATIONDAVIS,A.B.=Region3(Post820201)
{{#Wiki_filter:ACCELERATED DISTIUBUTION DEMONST$QTIONSYSTEMREGULATORY INFORMATION DISTRIBUTION SYSTEM(RIDS)'ACCESSION NBR:9112260334 DOC.DATE:
91/11/12NOTARIZED:
NOFACIL:50-237 DresdenNuclearPowerStation,Unit2,Commonwealth E50-249DresdenNuclearPowerStation,Unit3,Commonwealth EAUTH.NAME,AUTHORAFFILIATION EENIGENBURG,E.
Commonwealth EdisonCo.RECIP.NAME RECIPIENT AFFILIATION DAVIS,A.B.
=Region3(Post820201)


==SUBJECT:==
==SUBJECT:==
Listsresultsofsecondarycontainmentleakratetestperformedonreactorbldg.TestdemonstratedthatUnit3matlinterlockouterdoorhasadequatesealingtomaintainsecondarycontainment-integrity.DISTRIBUTIONCODE:IEOIDCOPIESRECEIVED:LTR(ENCL8SIZE:TITLE:General(50Dkt)-InspRept/NoticeofViolationResponseDOCKET0500023705000249NOTES:LicenseExpdateinaccordancewith10CFR2,2.109(12/22/72).05000237RECIPIENT1DCODE/NAMEPD3-2PDINTERNAL:ACRSAEOD/DEIIBDEDRONRRMORISSEAU,DI'I!'?ii/DLPQ/LPEB10NRR/DREP/PEPB9HNPR/PMAS/ILRB12PGFI02EXTERNAL:EGFrG/BRYCE,J.H.N&ICCOPIESLTTRECL1RECIPIENTIDCODE/NAMESIEGEL,B.AEODAEOD/DSP/TPABNRRHARBUCK~C~NRR/DLPQ/LHFBPTNRR/DOEA/OEABNRR/DST/DIRSE2NUDOCS-ABSTRACTOGC/HDS2RGN3FILE01NRCPDRCOPIESLTTRENCLNOTETOALL"RIDS"RECIPIENTS:PLEASEHELPUSTOREDUCEWASTE!CONTACTTHEDOCUMENTCONTROLDESK,ROOMPl-37(EXT.20079)TOELIMINATEYOURNAMEFROMDISTRIBUTIONLISTSFORDOCUMENTSYOUDON'TNEED!TOTALNUI!!'.".ROFCOPIESREQUIRED:LTTR24ENCL  
Listsresultsofsecondary containment leakratetestperformed onreactorbldg.Testdemonstrated thatUnit3matlinterlock outerdoorhasadequatesealingtomaintainsecondary containment-integrity.
DISTRIBUTION CODE:IEOIDCOPIESRECEIVED:LTR (ENCL8SIZE:TITLE:General(50Dkt)-Insp Rept/Notice ofViolation ResponseDOCKET0500023705000249NOTES:License Expdateinaccordance with10CFR2,2.109(12/22/72).
05000237RECIPIENT 1DCODE/NAME PD3-2PDINTERNAL:
ACRSAEOD/DEIIB DEDRONRRMORISSEAU,D I'I!'?ii/DLPQ/LPEB10 NRR/DREP/PEPB9H NPR/PMAS/ILRB12 PGFI02EXTERNAL:
EGFrG/BRYCE,J.
H.N&ICCOPIESLTTRECL1RECIPIENT IDCODE/NAME SIEGEL,B.
AEODAEOD/DSP/TPAB NRRHARBUCK~C~NRR/DLPQ/LHFBPT NRR/DOEA/OEAB NRR/DST/DIR SE2NUDOCS-ABSTRACT OGC/HDS2RGN3FILE01NRCPDRCOPIESLTTRENCLNOTETOALL"RIDS"RECIPIENTS:
PLEASEHELPUSTOREDUCEWASTE!CONTACTTHEDOCUMENTCONTROLDESK,ROOMPl-37(EXT.20079)TOELIMINATE YOURNAMEFROMDISTRIBUTION LISTSFORDOCUMENTS YOUDON'TNEED!TOTALNUI!!'.".R OFCOPIESREQUIRED:
LTTR24ENCL  


Commo~althEdisonDresdenN~rPowerStationR.R.g1Morris,Illinois60450Telephone815/942-2920November12,1991EDELTR:091-700PRIPltIyyP0>eMr.A.BertDavisRegionalAdministratorDirectorateofRegulatoryOperationsRegionIIIU.S.NuclearRegulatoryCommission799RooseveltRoadGlenEllyn,Illinois60137FJlf~+
Commo~alth EdisonDresdenN~rPowerStationR.R.g1Morris,Illinois60450Telephone 815/942-2920 November12,1991EDELTR:091-700PRIPltIyy P0>eMr.A.BertDavisRegionalAdministrator Directorate ofRegulatory Operations RegionIIIU.S.NuclearRegulatory Commission 799Roosevelt RoadGlenEllyn,Illinois60137FJlf~+


==Subject:==
==Subject:==
SecondaryContainmentLeakRateTestingDresdenNuclearPowerStationCommonwealthEdisonCompanyDocketNos.50-237and50-249
Secondary Containment LeakRateTestingDresdenNuclearPowerStationCommonwealth EdisonCompanyDocketNos.50-237and50-249DearMr.DavisAspartoftheDresdenUnit3pre-outage workaSecondary Containment LeakRateTest(SCLRT)wasperformed ontheUnit2/3ReactorBuilding.
 
TheSCLRTwasperformed inaccordance withDresdenUnit3Technical Specification 4.7.C.l.a.,
==DearMr.DavisAspartoftheDresdenUnit3pre-outageworkaSecondaryContainmentLeakRateTest(SCLRT)wasperformedontheUnit2/3ReactorBuilding.TheSCLRTwasperformedinaccordancewithDresdenUnit3TechnicalSpecification4.7.C.l.a.,==
whichrequiresthatpriortorefueling, Secondary Containment integrity mustbedemonstrated bymaintaining
whichrequiresthatpriortorefueling,SecondaryContainmentintegritymustbedemonstratedbymaintaining)/=0.25inchesofwatervacuumintheReactorBuildingwithonetrainoftheStandbyGasTreatmentsystemoperatingataflowof</=4000cubicfeetperminute(CFM)undercalmwindconditions(</=5milesperhour).OnSeptember07,1991,theSCLRTwasperformedinaccordancewithDresdenTechnicalStaffSurveillance(DTS)Procedure1600-22.Theresultsofthetestarelistedbelow.'2RXBLDGTRACKWAYINNERU2RXBLDGTRACKWAYOUTERU3RXBLDGMAT'LINTER-LOCKINNERU3RXBLDGMAT'LINTER-LOCKOUTERQQQKLQMXXQHSCLRTRESULT,INCHESOFMhXEMK.CLOSEDCLOSEDOPENCLOSEDCLOSEDCLOSEDCLOSEDOPENCLOSEDCLOSEDCLOSEDCLOSED-0.273-0.191-0.268ZEDE91/447/For  
)/=0.25inchesofwatervacuumintheReactorBuildingwithonetrainoftheStandbyGasTreatment systemoperating ataflowof</=4000cubicfeetperminute(CFM)undercalmwindconditions
(</=5milesperhour).OnSeptember 07,1991,theSCLRTwasperformed inaccordance withDresdenTechnical StaffSurveillance (DTS)Procedure 1600-22.Theresultsofthetestarelistedbelow.'2RXBLDGTRACKWAYINNERU2RXBLDGTRACKWAYOUTERU3RXBLDGMAT'LINTER-LOCKINNERU3RXBLDGMAT'LINTER-LOCKOUTERQQQKLQMXXQH SCLRTRESULT,INCHESOFMhXEMK.CLOSEDCLOSEDOPENCLOSEDCLOSEDCLOSEDCLOSEDOPENCLOSEDCLOSEDCLOSEDCLOSED-0.273-0.191-0.268ZEDE91/447
/For  
'
'
Asshownintheabovetable,theresultwithallinterlockdoorsclosedwas0.273inchesofwaternegativepressureinsecondarycontainmentwithrespecttoatmosphere,whichsatisfiedtheTechnicalSpecification4.7.C.l.a.requirement.ThisSCLRTalsodemonstratedthattheUnit2ReactorBuildingtrackwayinterlockouterdoorhasadequatesealingtomaintainsecondarycontainmentintegrity.Additionally,thistestdemonstratedthattheUnit3materialinterlockouterdoordoesnothaveadequatesealingtomaintainsecondarycontainmentintegrity.DresdenAdministrativeProcedure(DAP)13-14,Unit3ReactorBuildingMaterialInterlockAccessControl,isapostedprocedureandprovidesadequatecontrolofthisinterlock.ThisreportisbeingsubmittedinaccordancewithSection6.6.C.3.h.oftheUnit2andUnit3TechnicalSpecifications.PleasedirectanyrequestsforfurtherinformationregardingthistopictoM.Blakemore,TechnicalStaffSystemsEngineer,atextension2421.SincerelyE.D.EenigenburgStationManagerDresdenNuclearPowerStationcc~M.StraitS.LawsonG.SmithJ.KotowskiL.GernerM.BlakemoreFile/NRCFile/NumericalZEDE91/447}}
Asshownintheabovetable,theresultwithallinterlock doorsclosedwas0.273inchesofwaternegativepressureinsecondary containment withrespecttoatmosphere, whichsatisfied theTechnical Specification 4.7.C.l.a.
requirement.
ThisSCLRTalsodemonstrated thattheUnit2ReactorBuildingtrackwayinterlock outerdoorhasadequatesealingtomaintainsecondary containment integrity.
Additionally, thistestdemonstrated thattheUnit3materialinterlock outerdoordoesnothaveadequatesealingtomaintainsecondary containment integrity.
DresdenAdministrative Procedure (DAP)13-14,Unit3ReactorBuildingMaterialInterlock AccessControl,isapostedprocedure andprovidesadequatecontrolofthisinterlock.
Thisreportisbeingsubmitted inaccordance withSection6.6.C.3.h.
oftheUnit2andUnit3Technical Specifications.
Pleasedirectanyrequestsforfurtherinformation regarding thistopictoM.Blakemore, Technical StaffSystemsEngineer, atextension 2421.Sincerely E.D.Eenigenburg StationManagerDresdenNuclearPowerStationcc~M.StraitS.LawsonG.SmithJ.KotowskiL.GernerM.Blakemore File/NRCFile/Numerical ZEDE91/447}}

Revision as of 04:07, 29 June 2018

Lists Results of Secondary Containment Leak Rate Test Performed on Reactor Bldg.Test Demonstrated That Unit 3 Matl Interlock Outer Door Has Adequate Sealing to Maintain Secondary Containment Integrity
ML18037A079
Person / Time
Site: Dresden  Constellation icon.png
Issue date: 11/12/1991
From: EENIGENBURG E
COMMONWEALTH EDISON CO.
To: DAVIS A B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
EDE-LTR-91-700, NUDOCS 9112260334
Download: ML18037A079 (6)


Text

ACCELERATED DISTIUBUTION DEMONST$QTIONSYSTEMREGULATORY INFORMATION DISTRIBUTION SYSTEM(RIDS)'ACCESSION NBR:9112260334 DOC.DATE:

91/11/12NOTARIZED:

NOFACIL:50-237 DresdenNuclearPowerStation,Unit2,Commonwealth E50-249DresdenNuclearPowerStation,Unit3,Commonwealth EAUTH.NAME,AUTHORAFFILIATION EENIGENBURG,E.

Commonwealth EdisonCo.RECIP.NAME RECIPIENT AFFILIATION DAVIS,A.B.

=Region3(Post820201)

SUBJECT:

Listsresultsofsecondary containment leakratetestperformed onreactorbldg.Testdemonstrated thatUnit3matlinterlock outerdoorhasadequatesealingtomaintainsecondary containment-integrity.

DISTRIBUTION CODE:IEOIDCOPIESRECEIVED:LTR (ENCL8SIZE:TITLE:General(50Dkt)-Insp Rept/Notice ofViolation ResponseDOCKET0500023705000249NOTES:License Expdateinaccordance with10CFR2,2.109(12/22/72).

05000237RECIPIENT 1DCODE/NAME PD3-2PDINTERNAL:

ACRSAEOD/DEIIB DEDRONRRMORISSEAU,D I'I!'?ii/DLPQ/LPEB10 NRR/DREP/PEPB9H NPR/PMAS/ILRB12 PGFI02EXTERNAL:

EGFrG/BRYCE,J.

H.N&ICCOPIESLTTRECL1RECIPIENT IDCODE/NAME SIEGEL,B.

AEODAEOD/DSP/TPAB NRRHARBUCK~C~NRR/DLPQ/LHFBPT NRR/DOEA/OEAB NRR/DST/DIR SE2NUDOCS-ABSTRACT OGC/HDS2RGN3FILE01NRCPDRCOPIESLTTRENCLNOTETOALL"RIDS"RECIPIENTS:

PLEASEHELPUSTOREDUCEWASTE!CONTACTTHEDOCUMENTCONTROLDESK,ROOMPl-37(EXT.20079)TOELIMINATE YOURNAMEFROMDISTRIBUTION LISTSFORDOCUMENTS YOUDON'TNEED!TOTALNUI!!'.".R OFCOPIESREQUIRED:

LTTR24ENCL

Commo~alth EdisonDresdenN~rPowerStationR.R.g1Morris,Illinois60450Telephone 815/942-2920 November12,1991EDELTR:091-700PRIPltIyy P0>eMr.A.BertDavisRegionalAdministrator Directorate ofRegulatory Operations RegionIIIU.S.NuclearRegulatory Commission 799Roosevelt RoadGlenEllyn,Illinois60137FJlf~+

Subject:

Secondary Containment LeakRateTestingDresdenNuclearPowerStationCommonwealth EdisonCompanyDocketNos.50-237and50-249DearMr.DavisAspartoftheDresdenUnit3pre-outage workaSecondary Containment LeakRateTest(SCLRT)wasperformed ontheUnit2/3ReactorBuilding.

TheSCLRTwasperformed inaccordance withDresdenUnit3Technical Specification 4.7.C.l.a.,

whichrequiresthatpriortorefueling, Secondary Containment integrity mustbedemonstrated bymaintaining

)/=0.25inchesofwatervacuumintheReactorBuildingwithonetrainoftheStandbyGasTreatment systemoperating ataflowof</=4000cubicfeetperminute(CFM)undercalmwindconditions

(</=5milesperhour).OnSeptember 07,1991,theSCLRTwasperformed inaccordance withDresdenTechnical StaffSurveillance (DTS)Procedure 1600-22.Theresultsofthetestarelistedbelow.'2RXBLDGTRACKWAYINNERU2RXBLDGTRACKWAYOUTERU3RXBLDGMAT'LINTER-LOCKINNERU3RXBLDGMAT'LINTER-LOCKOUTERQQQKLQMXXQH SCLRTRESULT,INCHESOFMhXEMK.CLOSEDCLOSEDOPENCLOSEDCLOSEDCLOSEDCLOSEDOPENCLOSEDCLOSEDCLOSEDCLOSED-0.273-0.191-0.268ZEDE91/447

/For

'

Asshownintheabovetable,theresultwithallinterlock doorsclosedwas0.273inchesofwaternegativepressureinsecondary containment withrespecttoatmosphere, whichsatisfied theTechnical Specification 4.7.C.l.a.

requirement.

ThisSCLRTalsodemonstrated thattheUnit2ReactorBuildingtrackwayinterlock outerdoorhasadequatesealingtomaintainsecondary containment integrity.

Additionally, thistestdemonstrated thattheUnit3materialinterlock outerdoordoesnothaveadequatesealingtomaintainsecondary containment integrity.

DresdenAdministrative Procedure (DAP)13-14,Unit3ReactorBuildingMaterialInterlock AccessControl,isapostedprocedure andprovidesadequatecontrolofthisinterlock.

Thisreportisbeingsubmitted inaccordance withSection6.6.C.3.h.

oftheUnit2andUnit3Technical Specifications.

Pleasedirectanyrequestsforfurtherinformation regarding thistopictoM.Blakemore, Technical StaffSystemsEngineer, atextension 2421.Sincerely E.D.Eenigenburg StationManagerDresdenNuclearPowerStationcc~M.StraitS.LawsonG.SmithJ.KotowskiL.GernerM.Blakemore File/NRCFile/Numerical ZEDE91/447