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{{#Wiki_filter:REGULATORY,%FORMATIONDISTRIBUTIONSYEM(RIOS)ACCESSIONNBR:8010200056OOCi'DATEt80/10/20NOTARIZED:NODOCKETFACIL!50387SusquehannaStea~ElectricStationgUnitirPennsy'Iva50388SusquehannaSteamElectricStationiUnit2rPennsylv050003AUTH,NAMEAUTHORAFFILIATIONCURTIS'~H~PennsylvaniaPoser8LightCo,RECIP~NAMERKCIPIKNTAFFILIATION,IliGRIERgB,H,RegioniiPhiladelphiarOfficeoftheDirector
{{#Wiki_filter:REGULATORY,
%FORMATION DISTRIBUTION SYEM(RIOS)ACCESSION NBR:8010200056 OOCi'DATEt80/10/20NOTARIZED:
NODOCKETFACIL!50387Susquehanna Stea~ElectricStationgUnitirPennsy'Iva 50388Susquehanna SteamElectricStationiUnit2rPennsylv050003AUTH,NAMEAUTHORAFFILIATION CURTIS'~H~Pennsylvania Poser8LightCo,RECIP~NAMERKCIPIKNTAFFILIATION
,IliGRIERgB,H,RegioniiPhiladelphiar OfficeoftheDirector


==SUBJECT:==
==SUBJECT:==
Interimdeficiencyreptreexcessivevo,ltagedropsinacmotor.operatedvalvecontrolscircuitsKR1004508ER100508;Causedbysizeableresistanceofsmallcontrolcablelonglengths.Alternativesbeingevaluated>DISTRIBUTIONCODE:B019SCOPIESRKCEIVKDeLTRENCLSIZE:I,6TITLE:ConstructionDeficiencyReport-(10CFR50.55E)NOTES:SendI8K3copiesFSAR8allamends.SendILE;3copiesFSARLallamends.0500038705000388RECIPIENTIOCODE/NA>41KACTION+A/DLICENSNG04RUSHBROOKgM,'6INTERNAL~AD/RCI/IE17ASLBP/J~HARDEDOLSTAFF19HYD/GEOBR22LICQUAL-BR12NRCPOR'2REV13REGFI01DRDSDEV21COPIES.L'iTTR*ENCL11111111RECIPIENT'OCODKiNAMEYOUNGBLOOOzB05STARKER,'7AEOD,18D/DIRHUMFAC15EQUIPQUAL,BRi1ILE09MPA20OELD21QABR10RUTHKRFOROeH~IECOPIESLTTRENCL'1XTKRNAL:ACRSNSIC1608161LPDR03OCT2V1980TOTALNUMBEROFCOPIESREQUIRED;LTTR39ENCL  
Interimdeficiency reptreexcessive vo,ltagedropsinacmotor.operatedvalvecontrolscircuitsKR1004508ER100508;Caused bysizeableresistance ofsmallcontrolcablelonglengths.Alternatives beingevaluated>
/~ikj3'lggIIPl'>lQ)Ar+A TWONORTHNINTHSTREET,.PP8,L..~.IALLENTOWN,'PA:18101PHONEs(215)821~5151NORMANW.CURTISVicePresident-EngineeringILConairuction-Nuclear821-5381October20,1980Mr.BoyceH.GrierDirector,RegionIU.S.NuclearRegulatoryCommission631ParkAvenueKingofPrussia,Pennsylvania19406SUSQUEHANNASTEAMELECTRICSTATIONINTERIMREPORTOFADEFICIENCYONEXCESSIVEVOLTAGEDROPSINACMOTOROPERATEDVALVECONTROLCIRCUITSERs100450/100508FILE840-4PLA-560
DISTRIBUTION CODE:B019SCOPIESRKCEIVKDeLTR ENCLSIZE:I,6TITLE:Construction Deficiency Report-(10CFR50.55E)
NOTES:Send I8K3copiesFSAR8allamends.SendILE;3copiesFSARLallamends.0500038705000388RECIPIENT IOCODE/NA>41K ACTION+A/DLICENSNG04RUSHBROOKgM,'6 INTERNAL~AD/RCI/IE17ASLBP/J~HARDEDOLSTAFF19HYD/GEOBR22LICQUAL-BR12NRCPOR'2REV13REGFI01DRDSDEV21COPIES.L'iTTR*ENCL11111111RECIPIENT'O CODKiNAME YOUNGBLOOOzB 05STARKER,'7AEOD,18D/DIRHUMFAC15EQUIPQUAL,BRi1ILE09MPA20OELD21QABR10RUTHKRFOROeH
~IECOPIESLTTRENCL'1XTKRNAL:ACRSNSIC1608161LPDR03OCT2V1980TOTALNUMBEROFCOPIESREQUIRED; LTTR39ENCL  
/~ikj3'lggIIPl'>lQ)Ar+A TWONORTHNINTHSTREET,.PP8,L..~.IALLENTOWN,
'PA:18101PHONEs(215)821~5151NORMANW.CURTISVicePresident-Engineering ILConairuction-Nuclear 821-5381October20,1980Mr.BoyceH.GrierDirector, RegionIU.S.NuclearRegulatory Commission 631ParkAvenueKingofPrussia,Pennsylvania 19406SUSQUEHANNA STEAMELECTRICSTATIONINTERIMREPORTOFADEFICIENCY ONEXCESSIVE VOLTAGEDROPSINACMOTOROPERATEDVALVECONTROLCIRCUITSERs100450/100508 FILE840-4PLA-560


==DearMr.Grier:==
==DearMr.Grier:==
ThisletterservestoconfirminformationprovidedbytelephonetoNRCRegionIInspectorMr.J.DurrbyMr.R.A.SchwanofPPGLonSeptember18,1980.DuringthatconversationMr.Durr.:wasadvisedthatthesubjectcon-ditionwasunderevaluationforreportabilityundertheprovisionsof10CFR50.55(e).Thedeficiencyinvolvesexcessivevoltagedropsinthecontrolcircuitryofthemotorstartersforsomemotoroperatedvalves(MOVs).(Motorstartersaredeviceswhichprovidethecontrolofpowertomotors.)ForACpoweredMOVsrthemotorstarteroperatingcoilsaresuppliedviaacontroltransformertappedofftheMOVpowersupply.MultipleswitchesandrelaycontactsarewiredinthiscontrolcircuittomakeupthecontrollogicfortheMOV.AtSusquehannaSES,excessivevoltagedropsoccurinmotorstartercontrolcableswhensize2,orlarger,startersformotoroperatedvalvesareenergized.Thesevoltagedrops,whicharesevereenoughtopreventmotorstarteroperation,arecausedbythesizeableresistance(severalohms)oflonglengths(severalthousandEeet)ofsmall(114cu)controlcable.Twenty-two(22)size2orlargermotorstartersarelocatedinClasslEsafetysystemssuchasReactorRecirculationandResidualHeatRemovalandmustbecheckedtodetermineifexcessivevoltaged'ropsoccur.Sincethesevalvesarerequiredtooperatetomitigateadesignbasisevent,theaforementionedfailuretooperaterepresentsasignificantdeficiencyindesign.Therefore,thedeficiencyisdeemedreportableunder10CFR50.55(e).Further,sincethedetailsofthisreportprovide."informationrelevanttothereportingrequirementsof10CFR21,thiscorrespondenceisconsideredtoalsodischargeanyformalresponsibilityPPGLmayhaveforreportingincompliancethereto.Ao('galSI0$0g40PENNSYLVANIAPOWEREsLIGHTCOMPANY
Thisletterservestoconfirminformation providedbytelephone toNRCRegionIInspector Mr.J.DurrbyMr.R.A.SchwanofPPGLonSeptember 18,1980.Duringthatconversation Mr.Durr.:wasadvisedthatthesubjectcon-ditionwasunderevaluation forreportability undertheprovisions of10CFR50.55(e).
\:Mr.Boy'ce'.5.GrierOctober20,1980PPGLEngineeringisintheprocessofevaluatingseveralalternativesinordertodetermineanoptimumcourseofaction.Wecurrentlyestimatethatafinalreportof'hedeficiencyandthecorrectiveactiontakenwillbetransmittedtoyouinJanuary,1981.Verytrulyyours,N.W.CurtisVicePresident-EngineeringaConstruction-NuclearFLW:mcbcc:Mr.VictorStello(15)Director-OfficeofInspection6EnforcementU.S.NuclearRegulatoryCommissionWashington,D.C.20555<Mr.G;--McDonald,-Director.OfficeofManagementInformation6Program-ControlU.S.NuclearRegulatoryCommissionWashington,D.C.20555Mr.RobertM.GalloU.S.NuclearRegulatoryCommissionP.O.Box52Shickshinny,Pennsylvania18655}}
Thedeficiency involvesexcessive voltagedropsinthecontrolcircuitry ofthemotorstartersforsomemotoroperatedvalves(MOVs).(Motorstartersaredeviceswhichprovidethecontrolofpowertomotors.)ForACpoweredMOVsrthemotorstarteroperating coilsaresuppliedviaacontroltransformer tappedofftheMOVpowersupply.MultipleswitchesandrelaycontactsarewiredinthiscontrolcircuittomakeupthecontrollogicfortheMOV.AtSusquehanna SES,excessive voltagedropsoccurinmotorstartercontrolcableswhensize2,orlarger,startersformotoroperatedvalvesareenergized.
Thesevoltagedrops,whicharesevereenoughtopreventmotorstarteroperation, arecausedbythesizeableresistance (severalohms)oflonglengths(severalthousandEeet)ofsmall(114cu)controlcable.Twenty-two (22)size2orlargermotorstartersarelocatedinClasslEsafetysystemssuchasReactorRecirculation andResidualHeatRemovalandmustbecheckedtodetermine ifexcessive voltaged'ropsoccur.Sincethesevalvesarerequiredtooperatetomitigateadesignbasisevent,theaforementioned failuretooperaterepresents asignificant deficiency indesign.Therefore, thedeficiency isdeemedreportable under10CFR50.55(e).
Further,sincethedetailsofthisreportprovide."
information relevanttothereporting requirements of10CFR21,thiscorrespondence isconsidered toalsodischarge anyformalresponsibility PPGLmayhaveforreporting incompliance thereto.Ao('galSI0$0g40PENNSYLVANIA POWEREsLIGHTCOMPANY
\:Mr.Boy'ce'.5.
GrierOctober20,1980PPGLEngineering isintheprocessofevaluating severalalternatives inordertodetermine anoptimumcourseofaction.Wecurrently estimatethatafinalreportof'hedeficiency andthecorrective actiontakenwillbetransmitted toyouinJanuary,1981.Verytrulyyours,N.W.CurtisVicePresident-Engineering aConstruction-Nuclear FLW:mcbcc:Mr.VictorStello(15)Director-Office ofInspection 6Enforcement U.S.NuclearRegulatory Commission Washington, D.C.20555<Mr.G;--McDonald,-
Director.
OfficeofManagement Information 6Program-Control U.S.NuclearRegulatory Commission Washington, D.C.20555Mr.RobertM.GalloU.S.NuclearRegulatory Commission P.O.Box52Shickshinny, Pennsylvania 18655}}

Revision as of 03:36, 29 June 2018

Interim Deficiency Rept Re Excessive Voltage Drops in Ac Motor Operated Valve Controls Circuits Er 100450 & Er 100508.Caused by Sizeable Resistance of Small Control Cable Long Lengths.Alternatives Being Evaluated
ML18030A154
Person / Time
Site: Susquehanna  
Issue date: 10/20/1980
From: CURTIS N W
PENNSYLVANIA POWER & LIGHT CO.
To: GRIER B H
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
10CFR-050.55E, 10CFR-50.55E, PLA-560, NUDOCS 8010240456
Download: ML18030A154 (4)
v • d • e


Text

REGULATORY,

%FORMATION DISTRIBUTION SYEM(RIOS)ACCESSION NBR:8010200056 OOCi'DATEt80/10/20NOTARIZED:

NODOCKETFACIL!50387Susquehanna Stea~ElectricStationgUnitirPennsy'Iva 50388Susquehanna SteamElectricStationiUnit2rPennsylv050003AUTH,NAMEAUTHORAFFILIATION CURTIS'~H~Pennsylvania Poser8LightCo,RECIP~NAMERKCIPIKNTAFFILIATION

,IliGRIERgB,H,RegioniiPhiladelphiar OfficeoftheDirector

SUBJECT:

Interimdeficiency reptreexcessive vo,ltagedropsinacmotor.operatedvalvecontrolscircuitsKR1004508ER100508;Caused bysizeableresistance ofsmallcontrolcablelonglengths.Alternatives beingevaluated>

DISTRIBUTION CODE:B019SCOPIESRKCEIVKDeLTR ENCLSIZE:I,6TITLE:Construction Deficiency Report-(10CFR50.55E)

NOTES:Send I8K3copiesFSAR8allamends.SendILE;3copiesFSARLallamends.0500038705000388RECIPIENT IOCODE/NA>41K ACTION+A/DLICENSNG04RUSHBROOKgM,'6 INTERNAL~AD/RCI/IE17ASLBP/J~HARDEDOLSTAFF19HYD/GEOBR22LICQUAL-BR12NRCPOR'2REV13REGFI01DRDSDEV21COPIES.L'iTTR*ENCL11111111RECIPIENT'O CODKiNAME YOUNGBLOOOzB 05STARKER,'7AEOD,18D/DIRHUMFAC15EQUIPQUAL,BRi1ILE09MPA20OELD21QABR10RUTHKRFOROeH

~IECOPIESLTTRENCL'1XTKRNAL:ACRSNSIC1608161LPDR03OCT2V1980TOTALNUMBEROFCOPIESREQUIRED; LTTR39ENCL

/~ikj3'lggIIPl'>lQ)Ar+A TWONORTHNINTHSTREET,.PP8,L..~.IALLENTOWN,

'PA:18101PHONEs(215)821~5151NORMANW.CURTISVicePresident-Engineering ILConairuction-Nuclear 821-5381October20,1980Mr.BoyceH.GrierDirector, RegionIU.S.NuclearRegulatory Commission 631ParkAvenueKingofPrussia,Pennsylvania 19406SUSQUEHANNA STEAMELECTRICSTATIONINTERIMREPORTOFADEFICIENCY ONEXCESSIVE VOLTAGEDROPSINACMOTOROPERATEDVALVECONTROLCIRCUITSERs100450/100508 FILE840-4PLA-560

DearMr.Grier:

Thisletterservestoconfirminformation providedbytelephone toNRCRegionIInspector Mr.J.DurrbyMr.R.A.SchwanofPPGLonSeptember 18,1980.Duringthatconversation Mr.Durr.:wasadvisedthatthesubjectcon-ditionwasunderevaluation forreportability undertheprovisions of10CFR50.55(e).

Thedeficiency involvesexcessive voltagedropsinthecontrolcircuitry ofthemotorstartersforsomemotoroperatedvalves(MOVs).(Motorstartersaredeviceswhichprovidethecontrolofpowertomotors.)ForACpoweredMOVsrthemotorstarteroperating coilsaresuppliedviaacontroltransformer tappedofftheMOVpowersupply.MultipleswitchesandrelaycontactsarewiredinthiscontrolcircuittomakeupthecontrollogicfortheMOV.AtSusquehanna SES,excessive voltagedropsoccurinmotorstartercontrolcableswhensize2,orlarger,startersformotoroperatedvalvesareenergized.

Thesevoltagedrops,whicharesevereenoughtopreventmotorstarteroperation, arecausedbythesizeableresistance (severalohms)oflonglengths(severalthousandEeet)ofsmall(114cu)controlcable.Twenty-two (22)size2orlargermotorstartersarelocatedinClasslEsafetysystemssuchasReactorRecirculation andResidualHeatRemovalandmustbecheckedtodetermine ifexcessive voltaged'ropsoccur.Sincethesevalvesarerequiredtooperatetomitigateadesignbasisevent,theaforementioned failuretooperaterepresents asignificant deficiency indesign.Therefore, thedeficiency isdeemedreportable under10CFR50.55(e).

Further,sincethedetailsofthisreportprovide."

information relevanttothereporting requirements of10CFR21,thiscorrespondence isconsidered toalsodischarge anyformalresponsibility PPGLmayhaveforreporting incompliance thereto.Ao('galSI0$0g40PENNSYLVANIA POWEREsLIGHTCOMPANY

\:Mr.Boy'ce'.5.

GrierOctober20,1980PPGLEngineering isintheprocessofevaluating severalalternatives inordertodetermine anoptimumcourseofaction.Wecurrently estimatethatafinalreportof'hedeficiency andthecorrective actiontakenwillbetransmitted toyouinJanuary,1981.Verytrulyyours,N.W.CurtisVicePresident-Engineering aConstruction-Nuclear FLW:mcbcc:Mr.VictorStello(15)Director-Office ofInspection 6Enforcement U.S.NuclearRegulatory Commission Washington, D.C.20555<Mr.G;--McDonald,-

Director.

OfficeofManagement Information 6Program-Control U.S.NuclearRegulatory Commission Washington, D.C.20555Mr.RobertM.GalloU.S.NuclearRegulatory Commission P.O.Box52Shickshinny, Pennsylvania 18655

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