ML17266A115

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LER 79-015/03L-1:on 790507,RCS Boron Concentration Was Below Tech Spec Limit.Caused by Vendor Workers Unknowingly Cutting Steam Generator During Rim Cut Mods.Tubes Plugged & Concentration Restored
ML17266A115
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 10/22/1979
From: SCHOPPMAN M A
FLORIDA POWER & LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17207A643 List:
References
LER-79-015-03L, LER-79-15-3L, NUDOCS 7912130457
Download: ML17266A115 (1)


Text

UPDATERl'.!-PRE)tIOLDSRl!30RT DATE6-7%esNRCFQAhlM8IT771,LICEIVSEE EVENTREPORTU.S.NUCLEARAEQUI.ATORY COMAIISSICN

~oaCCN'T~oI3~O0'GtPLEASEPRINTOATYPEALLRKCUIREQINFGRMATIQNI I~PI)ISIIISl1IQ2LOO0I~OI0IOl0I0II0IOjcal4~Ii1!l.I1!Q~~I(sgLICKASKKCOOKulcchSKhlzMBKil~56'CK~4SK~vac3057CA~3I'QF~05I~0100I313I5IQ>~015QOI7I7I9'.Qz~!~l-I III~I~QL5051COCKET.4VMT

(<IQ59KVKNTOATsa~lSASPORTOAzK30EVENTDESCRIPTION

'NQPAOSAOLE'ONSGCUK'NC SQO>-'"'"'"'"~"'"'"'""'-'"'-'-'!>oIThcbo..Onconcentr"tior,intheRCSwasrest:ored to12rotlerconcentration inj135min.nocorealterations orpositive reactivity changeswereo'ccur~Iringduringthelowboronconcentration condition

.l!orethanadequate~shutdownmarginwasmaintained(Kef f<0:95)throughout thisperiod.Tb~i.s isthe.firstoccurrence ofthistype.03095Y'STKMCAI.3K~CA03KCOMP,VALVECOKCCQKSVSCQQKCMDONKNTCOOKSVSOccSVCC06~OW~RBIQ~C'Qz~hGz~HTIB~XICHIQLP+QzL71QzI3910IlI2I2IS19205KOV611TlALQCCVIl~KNCs RKPO'liRFVISIQ4Vis>T'<sARREPORT'IO.COOKrvpc4O.Q>>Rz>o>~7)9L+LOG1711551I~~L0032122222426sS2902122ACTIONgumaK2DPKCTSzVTCQW4/'N'3TTzACHMKhT 4DROADAIMKCQMD.COMP0h2tzTTAKENACTICllCNP<ANMKTKCQKQVAS@22'vcMITTKQ FcAMbvs.svsplIKRzdANVFAL>A<SRQISLJQIOQJQ20QJQ23oIooIoI~NQ2.Lz+Q24.NIQSJ~pi9J0I('0414'2Ja4447CAUS-QESCRIPIONANOCQRASCTIVE ACTIONSQ22Bar1ierintheoutere,tvoSGtubesin1BSGvereunhnovin~lv cutbsvendorworkersduringSGrimcutmodifications

.Hhen18SGwas~llaced~in>>etlay-up,feed>za>:er passedtlnuthedamagedtubes'intotheRCSLnd~~dilutedtbeRCSboronconcentration.

TheSGandaffectedRCle~overs9FACILITYSzATVS~;POD<FROTHERSTATVSQEZGMQtz~11'z'21012IS44ACTVIT>YCO4TZNTRKLKASKQOzrAKLKASKAMOVNTQF*CTIVIYQaQHLl8L'letI3101144PKASOhhKL KXPOSVAK5~0~MOB0IQ22~7.SQaa2s3111213PsRSO<14\L

>Ndu>R>KS aza~z'C~CMKTHQOOFOISCOVKRYOISCOVKAv QcSCR<PT<CN I~Q'2[~BID>ISur>'illancaTet4S46""Z'5h:':C4930aoa91112LCSSOFCROAMACKTOFACILITYQ42TYPSQKSCRIPTION IQ210PVBUC:TYI.'-"C"'L-opPREPARRM.A.'choppman

)1(2>t3O7'730NRCUSECNLYI~l68,6930FKQNE(305)552-3802