ML17266A115: Difference between revisions

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~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
~o a CCN'T~o I 3~O 0'G tPLEASE PRINT OA TYPE ALL RKCUIREQ INFGRMATIQNI I~PI)I S I I I Sl 1 IQ2LOO 0 I~O I 0 I Ol 0 I 0 I I 0 I Ojcal 4~Ii 1!l.I 1!Q~~I (sg LICKASKK COOK ulcchSK hlzMBKil~5 6'CK~4SK~vac 30 57 CA~3 I'QF~05 I~01 0 0 I 31 3 I 5 IQ>~01 5 QO I 7 I 7 I 9'.Qz~!~l-I I I I~I~QL 50 51 COCKET.4VMT
(<IQ59KVKNTOATsa~lSASPORTOAzK30EVENTDESCRIPTION
(<I Q 59 KVKNT OATsa~lS A SPORT OA z K 30 EVENT DESCRIPTION
'NQPAOSAOLE'ONSGCUK'NC SQO>-'"'"'"'"~"'"'"'""'-'"'-'-'!''>oIThcbo..Onconcentr"tior,intheRCSwasrest:ored to12rotlerconcentration inj135min.nocorealterations orpositive reactivity changeswereo'ccur~Iringduringthelowboronconcentration condition
'NQ PAOSAOLE'ONSGCUK'NC S QO>-'"'"'"'"~"'"'"'""'-'"'-'-'!''>o I Thc bo..On concent r" tior, in the RCS was rest:ored to 12rotler concentration inj 1 35 min.no core alterations orpositive reactivity changes were o'ccur~I ring during the low boron concentration condition.l!ore than adequate~shutdownmarginwasmaintained(Kef f<0:95)throughout this period.Tb~i.s is the.f irs t occurrence of this type.0 30 9 5 Y'S T K M C A I.3 K~C A 0 3 K COMP, VALVE C OK CCQK SVSCQQK C MDONKNT COOK SVS Occ SVCC 06~OW~RB I Q~C'Qz~h Gz~HT I B~XI C H IQ LP+Qz L 71 Qz I 3 9 10 Il I 2 I 2 IS 19 20 5 K OV 6 11 Tl AL QCCVIl~KNCs RKPO'li RFVISIQ4 Vis>T'<sAR REPORT'IO.COOK rvpc 4O.Q>>Rz>o>~7)9 L+LOG 17115 5 1I~~L003 21 22 22 24 26 sS 29 0 21 22 ACTION gumaK 2DPKCT Sz VTCQW4/'N'3TTzACHMKhT 4DROA DAIMK CQMD.CO M P 0 h 2 tz T TAKEN ACTICll CN P<AN MKTKCQ KQVAS@22'vcMITTKQ FcAM bvs.svspl IKR zdANVFA L>A<SR QIS L JQIO QJQ20 QJQ23 o I o o I oI~N Q2.Lz+Q24.N IQSJ~pi 9 J 0 I('0 41 4'2 Ja 44 47 CAUS-QESCRIP ION ANO CQRASCTIVE ACTIONS Q22 Bar 1 ier in the outer e, tvo SG tubes in 1B SG vere unhnovin~lv cut bs vendor workers during SG rim cut modifications
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.Hhen 18 SG was~ll aced~in>>et lay-up, feed>za>:er passed tlnu the damaged tubes'into the RCS Lnd~~diluted tbe RCS boron concentration.
.Hhen18SGwas~llaced~in>>etlay-up,feed>za>:er passedtlnuthedamagedtubes'intotheRCSLnd~~dilutedtbeRCSboronconcentration.
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Revision as of 13:28, 7 July 2018

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)
v • d • e


Text

UPDATE Rl'.!-PRE)t I OLDS Rl!30RT DATE 6-7%es NRC FQAhl M8 IT 771 , LICEIVSEE EVENT REPORT U.S.NUCLEAR AEQUI.ATORY COMAIISSICN

~o a CCN'T~o I 3~O 0'G tPLEASE PRINT OA TYPE ALL RKCUIREQ INFGRMATIQNI I~PI)I S I I I Sl 1 IQ2LOO 0 I~O I 0 I Ol 0 I 0 I I 0 I Ojcal 4~Ii 1!l.I 1!Q~~I (sg LICKASKK COOK ulcchSK hlzMBKil~5 6'CK~4SK~vac 30 57 CA~3 I'QF~05 I~01 0 0 I 31 3 I 5 IQ>~01 5 QO I 7 I 7 I 9'.Qz~!~l-I I I I~I~QL 50 51 COCKET.4VMT

(-'"'"'"'"~"'"'"'""'-'"'-'-'!>o I Thc bo..On concent r" tior, in the RCS was rest:ored to 12rotler concentration inj 1 35 min.no core alterations orpositive reactivity changes were o'ccur~I ring during the low boron concentration condition.l!ore than adequate~shutdownmarginwasmaintained(Kef f<0:95)throughout this period.Tb~i.s is the.f irs t occurrence of this type.0 30 9 5 Y'S T K M C A I.3 K~C A 0 3 K COMP, VALVE C OK CCQK SVSCQQK C MDONKNT COOK SVS Occ SVCC 06~OW~RB I Q~C'Qz~h Gz~HT I B~XI C H IQ LP+Qz L 71 Qz I 3 9 10 Il I 2 I 2 IS 19 20 5 K OV 6 11 Tl AL QCCVIl~KNCs RKPO'li RFVISIQ4 Vis>T'<sAR REPORT'IO.COOK rvpc 4O.Q>>Rz>o>~7)9 L+LOG 17115 5 1I~~L003 21 22 22 24 26 sS 29 0 21 22 ACTION gumaK 2DPKCT Sz VTCQW4/'N'3TTzACHMKhT 4DROA DAIMK CQMD.CO M P 0 h 2 tz T TAKEN ACTICll CN P<AN MKTKCQ KQVAS@22'vcMITTKQ FcAM bvs.svspl IKR zdANVFA L>A<SR QIS L JQIO QJQ20 QJQ23 o I o o I oI~N Q2.Lz+Q24.N IQSJ~pi 9 J 0 I('0 41 4'2 Ja 44 47 CAUS-QESCRIP ION ANO CQRASCTIVE ACTIONS Q22 Bar 1 ier in the outer e, tvo SG tubes in 1B SG vere unhnovin~lv cut bs vendor workers during SG rim cut modifications

.Hhen 18 SG was~ll aced~in>>et lay-up, feed>za>:er passed tlnu the damaged tubes'into the RCS Lnd~~diluted tbe RCS boron concentration.

The SG and affected RC le~overs 9 FACILITY Sz ATVS~;POD<FR OTHER STATVS Q EZG M Qtz~11'z'2 10 12 IS 44 ACTVIT>YCO4TZNT RKLKASKQ Ozr AKLKASK AMOVNT QF*CTIVI Y Qa QH Ll 8 L'let I 3 10 11 44 PKASOhhKL KXPOSVAK 5~0~MOB 0 IQ2 2~7.S Qa a 2 s 3 11 12 13 PsRSO<14\L

>Ndu>R>KS aza~z'C~C MKTHQO OF OISCOV KRY OISCOVKAv QcSCR<PT<CN I~Q'2[~BID>I Sur>'illanca Te t 4S 46"" Z'5 h:': C 49 30 a o a 9 11 12 LCSS OF CR OAMACK TO FACILITY Q42 TYPS QK SCRIPTION I Q2 10 PVBUC:TY I.'-"C"'L-op PREPAR R M.A.'choppman

)1 (2>t 3 O7'7 30 NRC USE CNLY I~l 68,69 30 FKQNE (305)552-3802

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