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{{#Wiki_filter:II.0NRCPCRMSSSIT.TllCQNTACISLCCISJIU*NUCLKARRKQULATCAYCQhlMISSICNLICENSE="EVENTRCTIagy'IIIIIQI(PL~KPRINT'CATYI'%LLRKCVIRKQINI'CRMATICNI0,IUC%454%COOSI4'i5LIC1iNSSNVMSIIR4CQN'T~Q7SQUROS~XQK05IO0OI33IIOO40.47CCCXSTtiUMSSR6141KVKNTCKSCAIPTICNANCPRCBASLKCCNSKCUKNCKSQIODurinrefueinuonvendonojoo1J~QIZlr.lSSIll2I-'IIIIOLLA00SVStITOATSI,'KIIIQ9IS25LICSi45%TY7%J057CA~$40~a3seedeterminedthatthealicationoftwoRosemountNodtransmittersresulted.inareortablesituationT,S.5situationcouldresultintheoeninoftheContainmentVacuumReliefValveswithanoverpressureconditionincontainment.Assuminafailureofacheckvalveineachvacuumreliefline.containmentisolationcaa-~04bilitwould.beaffected.~.Thisisthefirsteventofthiste.IO7495YSTS>CAUS%CAUS%CQMr.YALYSCOOSCCQ%5V5CQOSCCMIrONSNTCOOSSVSCOOSSU%COOSSHII"'OL'JSLJS~~"''SLESLOO'749I0III2I2~ISI910SSQVSNTIALQCCVRRStICSRSPORTRSVI5IQN<<R,RQQ~SNrY~"RSPORTNO.CQOS~TYSS~Na,8"'-"-"ILooI!ULJIIJJJIL~lLQJ2JK~ILJLl24ld2725JS203112AC4cNPUTURS=rrw.SNVTocwNATTACIIMSNTNANO&ARIM%CQMr.CQM7ONSNTTARSNAciTICVCNSp''ll'STIIOQ'OURSQ22SU%MITT%aPCRYI>ADJS.SvtrLIRMAN4PA~RSRL'sLJsL-"sL'-Is~LooLJSIls~s141l~.4041424447CAUSKQSCRIPTICNANQCQARKCiIVKACTIONSQ270Thetransmitterdenoutenormaunderthenormalrange.of-5to0inchesofwater.Thesetransmittersactuatethevacuumreliefvalvesat-2.25inchesofwater.Thelicenseewillreplacethesetransmitterswithadifferenttypebefore'start-up.MSTIIOOOrQISCOVSRVL~JQS4544444$75IIITISASRSCtINSLINJUN41Crq~o""''bO'"'Lcs5arcROAMAOSwrsc:UTYQ~~YSS0%5CRISTION~Z'42741'0>VSLICrv,55USQ045cRlrr:cvQKKmN'0721I0'AMECPPRKPARKASchoccman149PACIU.v.STATUS5i1~SRQT7ISRSTATUSQSOOOLJS~l'S~741IOICIS44ACTIVITY~NT24rRSLSASSQarRSL445%'.AMQUNrQriCTIYITVQSSQSQ~ZQSsNA73910IIrSRSONNSL47IACSIJR%5vUMSSilTY,S04~lrnCaQ~LoOIoooiiQv~zlloiNALOCATIONarRSLSASSQSKNANANANANACIJSKCNl,V4$49(305)552-3802S004SSQ57~oldcavSRvOSSORIATIQN2VendorNot'ification20  
{{#Wiki_filter:II.0NRCPCRMSSSIT.TllCQNTACISLCCISJIU*NUCLKARRKQULATCAY CQhlMISSICN LICENSE="
EVENTRCTIagy'IIIIIQI(PL~KPRINT'CATYI'%LLRKCVIRKQINI'CRMATICNI 0,IUC%454%COOSI4'i5LIC1iNSSNVMSIIR4CQN'T~Q7SQUROS~XQK05IO0OI33IIOO40.47CCCXSTtiUMSSR6141KVKNTCKSCAIPTICN ANCPRCBASLKCCNSKCUKNCKS QIODurinrefueinuonvendonojoo1J~QIZlr.lSSIll2I-'IIIIOLLA00SVStITOATSI,'KIIIQ9IS25LICSi45%TY7%J057CA~$40~a3seedetermined thatthealicationoftwoRosemount Nodtransmitters resulted.
inareortablesituation T,S.5situation couldresultintheoeninoftheContainment VacuumReliefValveswithanoverpressure condition incontainment.
Assuminafailureofacheckvalveineachvacuumreliefline.containment isolation caa-~04bilitwould.beaffected.~.Thisisthefirsteventofthiste.IO7495YSTS>CAUS%CAUS%CQMr.YALYSCOOSCCQ%5V5CQOSCCMIrONSNT COOSSVSCOOSSU%COOSSHII"'OL'JSLJS~~"''SLESLOO'749I0III2I2~ISI910SSQVSNTIALQCCVRRStICS RSPORTRSVI5IQN<<R,RQQ~SNrY~"RSPORTNO.
CQOS~TYSS~Na,8"'-"-"ILooI!ULJIIJJJIL~lLQJ2JK~ILJLl24ld2725JS203112AC4cNPUTURS=rrw.SNVTocwNATTACIIMSNT NANO&ARIM%CQMr.CQM7ONSNT TARSNAciTICVCNSp''ll'STIIOQ'OURSQ22SU%MITT%a PCRYI>ADJS.SvtrLIRMAN4PA~RSR L'sLJsL-"sL'-Is~LooLJSIls~s141l~.4041424447CAUSKQSCRIPTICN ANQCQARKCiIVK ACTIONSQ270Thetransmitter denoutenormaunderthenormalrange.of-5to0inchesofwater.Thesetransmitters actuatethevacuumreliefvalvesat-2.25inchesofwater.Thelicenseewillreplacethesetransmitters withadifferent typebefore'start-up.
MSTIIOOOrQISCOVSRV L~JQS4544444$75IIITISASRSCtINSL INJUN41Crq~o""''bO'"'Lcs5arcROAMAOSwrsc:UTYQ~~YSS0%5CRISTION~Z'42741'0>VSLICrv,55USQ045cRlrr:cv QKKmN'0721I0'AMECPPRKPARKASchoccman 149PACIU.v.STATUS5i1~SRQT7ISRSTATUSQSOOOLJS~l'S~741IOICIS44ACTIVITY~NT24rRSLSASSQarRSL445%'.AMQUNrQriCTIYITVQSSQSQ~ZQSsNA73910IIrSRSONNSL47IACSIJR%5vUMSSilTY,S04~lrnCaQ~
LoOIoooiiQv~zlloi NALOCATIONarRSLSASSQSKNANANANANACIJSKCNl,V4$49(305)552-3802S004SSQ57~oldcavSRv OSSORIATIQN 2VendorNot'ification20  
!.
!.
REPORTABLEOCCURRENCE33~-16LIGENSEEEVENTREPORTPAGETWOAdditionalEventDescritionandProbableConseuencesOnAprilll,1980,anengineeringevaluationdeterminedthattheappli-cationofcertainRosemountModel1152pressuretransmittersresultedinareportablesituation.Ithasbeenobservedbythemanufacturer,andreportedtothelicenseeonMarch15,1980thatina'imitednumberoftransmittersaninputpressureeitheroverorunderthenormaloperatingrangecausesanoutputwithinthenormalrangeof4to20milliamps.ThetransmittersaffectedareRosemountModel1152pressuretransmitterswithoutputcodes"A"or"D".Themanufacturerobservedthatduetoauniqueconditioninthetransmitterelectronics,anoverrangeconditionexceeding140%oftheupperrangelimitcancauseadiscontinuityinthetrans-mitteroutput,resultinginanoutputlessthan20millamps.Duetoadifferentuniqueconditioninthet'iansmitterelectronics,anunderrangeconditionexceeding100%ofthecalibratedspancancauseanoutputabove4milliamps.Theoverrangediscontinuitywasobservedin5%ofalimitedsample,theunderrangediscontiniutybeingobservedin55%ofthesample.ThemodeltransmitterinparallelwithasecondtransmitterfromadifferentmanufactureractuatesContainmentVacuumReliefValveFCV-25-7ononevacuumreliefline.AnidenticalcontrolarrangementexistsforContainmentVacuumReliefValveFCV-25-8onaredundantvacuum.reliefline.Thesevalvesalsoperform*containmereisolationfunctionintheeventofaLOCA.Eachcontainmentvacuumrelieflinecontainsacheckvalvetopreventflowoutfromthecontainment.Therangeoftheaffected.t=ansmittersis-5"H20to0"H20fora4to20milliampoutput.Withanoverpressureconditionexceeding140%ofthecalibratedspan,equivalenttoapositivepressureof2"H0incontainment,theRosemounttransmitterscouldopenvalvesFCV-25-7and3CV-25-8eventhoughthesecondtransmitterfunctionsproperly.Assumingafailureofthecheckvalve(s);containmentisolationcapabilitywouldbeaffected.Thismodel-transmitterisalsousedtomonitorreactorcoolantflow.Fourtransmittersmonitorthedifferentialpressureacrossthereactorcoolantpumpsandfourtransmittersmonitorthedifferentialpressureacrossthereactorcore.Thesetransmittersare"IndicationOnly"instrumentsandhavenocontrol,protective,orsafetyfunction.CorporatePowerPlantEngineeringhasdirectedthatthecontainmentvacuumrelieftransmittersbereplacedwithClass1E,SeismicCategoryIqualifiedRosemountModel1153pressuretransmitters.TheSt.LuciePlantMaintenanceDepartmentcoordinatedbyFP&LPowerResourcesDepartmentwillberesponsibleforthetransmitterreplacement.Thisactionisscheduledtobecompletedpriortothestart-upoftheunit(approximatelyApril30,1980).St.LucieUnit1hasbeenengagedinrefuelingsinceMarch15,1980.TheLicenseehasdeterminedthatitsotherlicensedfacilitiesarenotaffectedbythissituation,anditsEngineeringDepartmentwillensurethattheunitunderconstruction,St.LucieUnit2,willalsonotbeaffected.C}}
REPORTABLE OCCURRENCE 33~-16LIGENSEEEVENTREPORTPAGETWOAdditional EventDescritionandProbableConseuencesOnAprilll,1980,anengineering evaluation determined thattheappli-cationofcertainRosemount Model1152pressuretransmitters resultedinareportable situation.
Ithasbeenobservedbythemanufacturer, andreportedtothelicenseeonMarch15,1980thatina'imitednumberoftransmitters aninputpressureeitheroverorunderthenormaloperating rangecausesanoutputwithinthenormalrangeof4to20milliamps.
Thetransmitters affectedareRosemount Model1152pressuretransmitters withoutputcodes"A"or"D".Themanufacturer observedthatduetoauniquecondition inthetransmitter electronics, anoverrange condition exceeding 140%oftheupperrangelimitcancauseadiscontinuity inthetrans-mitteroutput,resulting inanoutputlessthan20millamps.
Duetoadifferent uniquecondition inthet'iansmitter electronics, anunderrange condition exceeding 100%ofthecalibrated spancancauseanoutputabove4milliamps.
Theoverrange discontinuity wasobservedin5%ofalimitedsample,theunderrange discontiniuty beingobservedin55%ofthesample.Themodeltransmitter inparallelwithasecondtransmitter fromadifferent manufacturer actuatesContainment VacuumReliefValveFCV-25-7ononevacuumreliefline.Anidentical controlarrangement existsforContainment VacuumReliefValveFCV-25-8onaredundant vacuum.reliefline.Thesevalvesalsoperform*containmere isolation functionintheeventofaLOCA.Eachcontainment vacuumrelieflinecontainsacheckvalvetopreventflowoutfromthecontainment.
Therangeoftheaffected.
t=ansmitters is-5"H20to0"H20fora4to20milliampoutput.Withanoverpressure condition exceeding 140%ofthecalibrated span,equivalent toapositivepressureof2"H0incontainment, theRosemount transmitters couldopenvalvesFCV-25-7and3CV-25-8eventhoughthesecondtransmitter functions properly.
Assumingafailureofthecheckvalve(s);
containment isolation capability wouldbeaffected.
Thismodel-transmitter isalsousedtomonitorreactorcoolantflow.Fourtransmitters monitorthedifferential pressureacrossthereactorcoolantpumpsandfourtransmitters monitorthedifferential pressureacrossthereactorcore.Thesetransmitters are"Indication Only"instruments andhavenocontrol,protective, orsafetyfunction.
Corporate PowerPlantEngineering hasdirectedthatthecontainment vacuumrelieftransmitters bereplacedwithClass1E,SeismicCategoryIqualified Rosemount Model1153pressuretransmitters.
TheSt.LuciePlantMaintenance Department coordinated byFP&LPowerResources Department willberesponsible forthetransmitter replacement.
Thisactionisscheduled tobecompleted priortothestart-upoftheunit(approximately April30,1980).St.LucieUnit1hasbeenengagedinrefueling sinceMarch15,1980.TheLicenseehasdetermined thatitsotherlicensedfacilities arenotaffectedbythissituation, anditsEngineering Department willensurethattheunitunderconstruction, St.LucieUnit2,willalsonotbeaffected.
C}}

Revision as of 12:27, 29 June 2018

LER 80-016/09T-0:on 800411,engineering Evaluation Determined That Application of Two Rosemount Model 1152 Pressure Transmitters Resulted in Reportable Situation.Caused by Design Problem.Transmitters to Be Replaced
ML17266A192
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 04/16/1980
From: SCHOPPMANN M A
FLORIDA POWER & LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17208A502 List:
References
LER-80-016-09T, LER-80-16-9T, NUDOCS 8004240375
Download: ML17266A192 (3)
v • d • e


Text

II.0NRCPCRMSSSIT.TllCQNTACISLCCISJIU*NUCLKARRKQULATCAY CQhlMISSICN LICENSE="

EVENTRCTIagy'IIIIIQI(PL~KPRINT'CATYI'%LLRKCVIRKQINI'CRMATICNI 0,IUC%454%COOSI4'i5LIC1iNSSNVMSIIR4CQN'T~Q7SQUROS~XQK05IO0OI33IIOO40.47CCCXSTtiUMSSR6141KVKNTCKSCAIPTICN ANCPRCBASLKCCNSKCUKNCKS QIODurinrefueinuonvendonojoo1J~QIZlr.lSSIll2I-'IIIIOLLA00SVStITOATSI,'KIIIQ9IS25LICSi45%TY7%J057CA~$40~a3seedetermined thatthealicationoftwoRosemount Nodtransmitters resulted.

inareortablesituation T,S.5situation couldresultintheoeninoftheContainment VacuumReliefValveswithanoverpressure condition incontainment.

Assuminafailureofacheckvalveineachvacuumreliefline.containment isolation caa-~04bilitwould.beaffected.~.Thisisthefirsteventofthiste.IO7495YSTS>CAUS%CAUS%CQMr.YALYSCOOSCCQ%5V5CQOSCCMIrONSNT COOSSVSCOOSSU%COOSSHII"'OL'JSLJS~~"SLESLOO'749I0III2I2~ISI910SSQVSNTIALQCCVRRStICS RSPORTRSVI5IQN<<R,RQQ~SNrY~"RSPORTNO.

CQOS~TYSS~Na,8"'-"-"ILooI!ULJIIJJJIL~lLQJ2JK~ILJLl24ld2725JS203112AC4cNPUTURS=rrw.SNVTocwNATTACIIMSNT NANO&ARIM%CQMr.CQM7ONSNT TARSNAciTICVCNSpll'STIIOQ'OURSQ22SU%MITT%a PCRYI>ADJS.SvtrLIRMAN4PA~RSR L'sLJsL-"sL'-Is~LooLJSIls~s141l~.4041424447CAUSKQSCRIPTICN ANQCQARKCiIVK ACTIONSQ270Thetransmitter denoutenormaunderthenormalrange.of-5to0inchesofwater.Thesetransmitters actuatethevacuumreliefvalvesat-2.25inchesofwater.Thelicenseewillreplacethesetransmitters withadifferent typebefore'start-up.

MSTIIOOOrQISCOVSRV L~JQS4544444$75IIITISASRSCtINSL INJUN41Crq~o""bO'"'Lcs5arcROAMAOSwrsc:UTYQ~~YSS0%5CRISTION~Z'42741'0>VSLICrv,55USQ045cRlrr:cv QKKmN'0721I0'AMECPPRKPARKASchoccman 149PACIU.v.STATUS5i1~SRQT7ISRSTATUSQSOOOLJS~l'S~741IOICIS44ACTIVITY~NT24rRSLSASSQarRSL445%'.AMQUNrQriCTIYITVQSSQSQ~ZQSsNA73910IIrSRSONNSL47IACSIJR%5vUMSSilTY,S04~lrnCaQ~

LoOIoooiiQv~zlloi NALOCATIONarRSLSASSQSKNANANANANACIJSKCNl,V4$49(305)552-3802S004SSQ57~oldcavSRv OSSORIATIQN 2VendorNot'ification20

!.

REPORTABLE OCCURRENCE 33~-16LIGENSEEEVENTREPORTPAGETWOAdditional EventDescritionandProbableConseuencesOnAprilll,1980,anengineering evaluation determined thattheappli-cationofcertainRosemount Model1152pressuretransmitters resultedinareportable situation.

Ithasbeenobservedbythemanufacturer, andreportedtothelicenseeonMarch15,1980thatina'imitednumberoftransmitters aninputpressureeitheroverorunderthenormaloperating rangecausesanoutputwithinthenormalrangeof4to20milliamps.

Thetransmitters affectedareRosemount Model1152pressuretransmitters withoutputcodes"A"or"D".Themanufacturer observedthatduetoauniquecondition inthetransmitter electronics, anoverrange condition exceeding 140%oftheupperrangelimitcancauseadiscontinuity inthetrans-mitteroutput,resulting inanoutputlessthan20millamps.

Duetoadifferent uniquecondition inthet'iansmitter electronics, anunderrange condition exceeding 100%ofthecalibrated spancancauseanoutputabove4milliamps.

Theoverrange discontinuity wasobservedin5%ofalimitedsample,theunderrange discontiniuty beingobservedin55%ofthesample.Themodeltransmitter inparallelwithasecondtransmitter fromadifferent manufacturer actuatesContainment VacuumReliefValveFCV-25-7ononevacuumreliefline.Anidentical controlarrangement existsforContainment VacuumReliefValveFCV-25-8onaredundant vacuum.reliefline.Thesevalvesalsoperform*containmere isolation functionintheeventofaLOCA.Eachcontainment vacuumrelieflinecontainsacheckvalvetopreventflowoutfromthecontainment.

Therangeoftheaffected.

t=ansmitters is-5"H20to0"H20fora4to20milliampoutput.Withanoverpressure condition exceeding 140%ofthecalibrated span,equivalent toapositivepressureof2"H0incontainment, theRosemount transmitters couldopenvalvesFCV-25-7and3CV-25-8eventhoughthesecondtransmitter functions properly.

Assumingafailureofthecheckvalve(s);

containment isolation capability wouldbeaffected.

Thismodel-transmitter isalsousedtomonitorreactorcoolantflow.Fourtransmitters monitorthedifferential pressureacrossthereactorcoolantpumpsandfourtransmitters monitorthedifferential pressureacrossthereactorcore.Thesetransmitters are"Indication Only"instruments andhavenocontrol,protective, orsafetyfunction.

Corporate PowerPlantEngineering hasdirectedthatthecontainment vacuumrelieftransmitters bereplacedwithClass1E,SeismicCategoryIqualified Rosemount Model1153pressuretransmitters.

TheSt.LuciePlantMaintenance Department coordinated byFP&LPowerResources Department willberesponsible forthetransmitter replacement.

Thisactionisscheduled tobecompleted priortothestart-upoftheunit(approximately April30,1980).St.LucieUnit1hasbeenengagedinrefueling sinceMarch15,1980.TheLicenseehasdetermined thatitsotherlicensedfacilities arenotaffectedbythissituation, anditsEngineering Department willensurethattheunitunderconstruction, St.LucieUnit2,willalsonotbeaffected.

C

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