ML17266A072: Difference between revisions

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{{#Wiki_filter:oVRCFORoVI366(7.77)LICEIVSEL-EVciVTREI7QRTU.S.oVVCLE*RREGULATORY COAIMISSION
{{#Wiki_filter:oVRC FORoVI 366 (7.77)LICEIVSEL-EVciVT REI7QRT U.S.oVVCLE*R REGULATORY COAIMISSION
~073CON'T~o0I20(P'AScPRINTORTYPEALLREOUIAEOINFORMATIONI IdIQoII-I1010101-1010 Qo411'I111Q~IQo9LICENSEECOOEic'SIICEi4$6i4ulHSZR25i6IICNScTYI'34057<<A~So300':*iLL'00I1o'CD~IOj606'ICOCKZTNUM8EREVENTOATc1473REPORTOAT>>cVEiolTOESCRIPTEON ANOPROSASL=CONScCVciHCES QIOOurinarefuelinoutaesurveillance insectionofRCSboronconcentra-
~0 7 3 CON'T~o 0 I 2 0 (P'ASc PRINT OR TYPE ALL REOUIAEO INFORMATIONI I d IQo I I-I 1010101-1010 Qo411'I 111 Q~IQo 9 LICENSEE COOE ic'S I ICEi4$6 i4ulHSZR 25 i6 I IC NSc TYI'3 40 57<<A~So3 00':*i LL'0 0 I 1 o'CD~IOj 60 6'I COCK ZT N UM 8 ER EV ENT OATc 14 73 REPORT OAT>>cVEiolT OESCRIPTEON ANO PROSASL=CONScCVciHCES QIO Ourin a refuelin outa e surveillance ins ection of RCS boron concentra-
~03tionindicated theRCSbelowthe1720mlimitofT.S.3.9.11698m.~04Theboronconcentration
~03 tion indicated the RCS below the 1720 m limit of T.S.3.9.1 1698 m.~04 The boron concentration
..intheRCSwasrestoredtoroerconcentration in~os135min.Nocorealterations orositivereacti.vit chaneswereoccurring
..in the RCS was restored to ro er concentration in~os 135 min.No core alterations or ositive reacti.vit chan es were occurring~06 durin the low boron concentration condition.
~06durinthelowboronconcentration condition.
More than adequate shutdown~07 mar in was maintained K (0.95)throu hout this period.This is the~08 first occurrence of.this t e.3 9 30 SYSTEM'AUSc CAUSE COMP, vAi vE COOS<<OOE SUSC<<OE COMPONENT COOS SUBCCOZ SUBCOCE~oo~RB Ooo~EO)o~XQo."H>E"I 0 I I 8 L~JOo LZJ Oo 1 o 9 In ll~12 l3 13 19 SZOUPNTIAL OCCUAAENC AEPCAT AZViSION C 0*2IZo 21 28 29 0 I 3'2 ACTION FUTUAE EFFcCT SIIUTOOYIN ATTACHMEioIT NPROA PRIMcCCMP.
Morethanadequateshutdown~07marinwasmaintained K(0.95)throuhoutthisperiod.Thisisthe~08firstoccurrence of.thiste.3930SYSTEM'AUScCAUSECOMP,vAivECOOS<<OOESUSC<<OECOMPONENT COOSSUBCCOZSUBCOCE~oo~RBOoo~EO)o~XQo."H>E"I0II8L~JOoLZJOo1o9Inll~12l31319SZOUPNTIAL OCCUAAENC AEPCATAZViSIONC0*2IZo2128290I3'2ACTIONFUTUAEEFFcCTSIIUTOOYIN ATTACHMEioIT NPROAPRIMcCCMP.
COMPOPIENT TAKEN Ac i ION ON PLANT NETHCO NOUAS+22 SUSMir TEO PCAM SUS.SUPPLIER UANUPACTURcA o>>cwoc LrJO~ic oooooll o>>O~ac LeJS Lcc~~ol: 24'5 36 37 cl 44 47 CAVSC OESCRIPTION ANO CORREL IVS ACTIONS Q27 o Earlier in the outa e tw steam enerator S G tubes were unknowin 1 cut during S G maintenance.
COMPOPIENT TAKENAciIONONPLANTNETHCONOUAS+22SUSMirTEOPCAMSUS.SUPPLIERUANUPACTURcA o>>cwocLrJO~icooooollo>>O~acLeJSLcc~~ol:24'53637cl4447CAVSCOESCRIPTION ANOCORRELIVSACTIONSQ27oEarlierintheoutaetwsteameneratorSGtubeswereunknowin1cutduringSGmaintenance.
When the S G was laced in wet la-uo edwater assed thru the tubes into the RCS thus dilutin the boron concentration in the RCS.The S/G and affected RC loo were drained and the S/G tubes IAE'oiloo OP 0774EA STATUS~OISCOvcBY+BQCI Q3S NA NAAI=oF PR PAR=A M.A.Scho man 2908 3 80~0 7 were ro erl lu ed.1 8 9 FACILITY STA ooS il PG VIE A'O LaaoolOS.NA 8 Io 12 IS AC.IVITY CONT31IT REI PAScD OF olELcASZ AMOUNT CF'ACTIV~I~~Zi Q33~ZQS.NA 1 3'3 ln PcASONNEI.
WhentheSGwaslacedinwetla-uoedwaterassedthruthetubesintotheRCSthusdilutintheboronconcentration intheRCS.TheS/GandaffectedRClooweredrainedandtheS/GtubesIAE'oiloo OP0774EASTATUS~OISCOvcBY
EXPOSUAES NUMS R TYoc 043CAIPTION Q<S~00 0 oQ>>~ZOEo 1 3 9 I I I 2 IS PERSCNNEI.
+BQCIQ3SNANAAI=oFPRPAR=AM.A.Schoman2908380~07wereroerllued.189FACILITYSTAooSilPGVIEA'OLaaoolOS.
IlliioPI ES i~00I 0IQ LCSSOF CA CAMAGE oo FACILITY Q43 TYPc OESCAIPTION
NA8Io12ISAC.IVITYCONT31ITREIPAScDOFolELcASZAMOUNTCF'ACTIV~I~~ZiQ33~ZQS.NA13'3lnPcASONNEI.
~ii 0~ZIQ42 1 8 10 PUSVCiTY I,.uco>ES<<AI>>CN Q KK I N'Q 7 3'1'0 Oiscov EAY OESCAI>>iool
EXPOSUAES NUMSRTYoc043CAIPTION Q<S~000oQ>>~ZOEo139III2ISPERSCNNEI.
~32 Surveillance Test LOCAllo.l OF RELEASE Q3o NA 50 30.'RC VSc OiNLY 66 69 30 PNO17EI 305 552"3802 i.'Vlf*}}
IlliioPIESi~00I0IQLCSSOFCACAMAGEooFACILITYQ43TYPcOESCAIPTION
~ii0~ZIQ421810PUSVCiTYI,.uco>ES<<AI>>CNQKKIN'Q73'1'0OiscovEAYOESCAI>>iool
~32Surveillance TestLOCAllo.l OFRELEASEQ3oNA5030.'RCVScOiNLY666930PNO17EI305552"3802 i.'Vlf*}}

Revision as of 13:29, 7 July 2018

LER 79-015/03L-0 on 790507:surveillance Insp of RCS Boron Concentration Indicated RCS Below 1,720 Parts Per Million Tech Spec Limit.Caused by Feedwater from Steam Generator Tubes Diluting Boron Concentration.Tubes Plugged
ML17266A072
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 06/07/1979
From: SCHOPPMAN M A
FLORIDA POWER & LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17206A850 List:
References
LER-79-015-03L-01, LER-79-15-3L-1, NUDOCS 7906180507
Download: ML17266A072 (2)
v • d • e


Text

oVRC FORoVI 366 (7.77)LICEIVSEL-EVciVT REI7QRT U.S.oVVCLE*R REGULATORY COAIMISSION

~0 7 3 CON'T~o 0 I 2 0 (P'ASc PRINT OR TYPE ALL REOUIAEO INFORMATIONI I d IQo I I-I 1010101-1010 Qo411'I 111 Q~IQo 9 LICENSEE COOE ic'S I ICEi4$6 i4ulHSZR 25 i6 I IC NSc TYI'3 40 57<<A~So3 00':*i LL'0 0 I 1 o'CD~IOj 60 6'I COCK ZT N UM 8 ER EV ENT OATc 14 73 REPORT OAT>>cVEiolT OESCRIPTEON ANO PROSASL=CONScCVciHCES QIO Ourin a refuelin outa e surveillance ins ection of RCS boron concentra-

~03 tion indicated the RCS below the 1720 m limit of T.S.3.9.1 1698 m.~04 The boron concentration

..in the RCS was restored to ro er concentration in~os 135 min.No core alterations or ositive reacti.vit chan es were occurring~06 durin the low boron concentration condition.

More than adequate shutdown~07 mar in was maintained K (0.95)throu hout this period.This is the~08 first occurrence of.this t e.3 9 30 SYSTEM'AUSc CAUSE COMP, vAi vE COOS<<OOE SUSC<<OE COMPONENT COOS SUBCCOZ SUBCOCE~oo~RB Ooo~EO)o~XQo."H>E"I 0 I I 8 L~JOo LZJ Oo 1 o 9 In ll~12 l3 13 19 SZOUPNTIAL OCCUAAENC AEPCAT AZViSION C 0*2IZo 21 28 29 0 I 3'2 ACTION FUTUAE EFFcCT SIIUTOOYIN ATTACHMEioIT NPROA PRIMcCCMP.

COMPOPIENT TAKEN Ac i ION ON PLANT NETHCO NOUAS+22 SUSMir TEO PCAM SUS.SUPPLIER UANUPACTURcA o>>cwoc LrJO~ic oooooll o>>O~ac LeJS Lcc~~ol: 24'5 36 37 cl 44 47 CAVSC OESCRIPTION ANO CORREL IVS ACTIONS Q27 o Earlier in the outa e tw steam enerator S G tubes were unknowin 1 cut during S G maintenance.

When the S G was laced in wet la-uo edwater assed thru the tubes into the RCS thus dilutin the boron concentration in the RCS.The S/G and affected RC loo were drained and the S/G tubes IAE'oiloo OP 0774EA STATUS~OISCOvcBY+BQCI Q3S NA NAAI=oF PR PAR=A M.A.Scho man 2908 3 80~0 7 were ro erl lu ed.1 8 9 FACILITY STA ooS il PG VIE A'O LaaoolOS.NA 8 Io 12 IS AC.IVITY CONT31IT REI PAScD OF olELcASZ AMOUNT CF'ACTIV~I~~Zi Q33~ZQS.NA 1 3'3 ln PcASONNEI.

EXPOSUAES NUMS R TYoc 043CAIPTION Q<S~00 0 oQ>>~ZOEo 1 3 9 I I I 2 IS PERSCNNEI.

IlliioPI ES i~00I 0IQ LCSSOF CA CAMAGE oo FACILITY Q43 TYPc OESCAIPTION

~ii 0~ZIQ42 1 8 10 PUSVCiTY I,.uco>ES<<AI>>CN Q KK I N'Q 7 3'1'0 Oiscov EAY OESCAI>>iool

~32 Surveillance Test LOCAllo.l OF RELEASE Q3o NA 50 30.'RC VSc OiNLY 66 69 30 PNO17EI 305 552"3802 i.'Vlf*

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