ML17266A151

LER 80-006/03L-0:on 800202,during Periodic Exercise of Containment Isolation Valves,Normally Closed Valves V-5201 & V-5204 Could Not Be Shut.Caused by Crystalline Boric Acid Deposits Caked on Valves.Valves Freed & Exercised

ML17266A151
Person / Time
Site:	Saint Lucie
Issue date:	03/03/1980
From:	SCHOPPMAN M A FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17207A887	List: ML17207A886 ML17266A151
References
LER-80-006-03L, LER-80-6-3L, NUDOCS 8003170438
Download: ML17266A151 (2)

Text

NRC FORM SBB IT 21 I LlCENSEE EVENT REPORT Ui S NUCI.BAR REGULATORY COMMISSION

'Q (PLEASE PRINT OR TYPE ALL RKOUIRED INFORPFIATIONI 1 4~oi Fl LIS L 6 ll IQE0 01-0 010101 0-0 0 Q34 ll I I I Q>>~QE a 9 LtccN544 cooc LICaieSC EVVMBCR ZS M I CELVsa TypS$0 31~CON'T QDG'~LQF 5 0 0>>35'~il Q I I I Q 60 dl QOC+ETNUMBCR 48 49 CVCNTQ*TC 14 15 ACPQRTQATB EVENT OBSCRIPTION ANO PROBABLB CONSBOU&IC S QIO~oz Durin eriodic exercise of containment isolation valves AP 0010125 it~03 was found that normal 1 cl osed val ves V-5201 and V-5204 coul d not be shut.The enetration was isolated b shuttin manual valve V-05003.The valves~os were freed exercised, and laced back into service.V-5201 was a ain~Q B f'ound to be stuck on 2-8-80.The above corrective action was erformed~Q 1 a ain'and no further roblems have been noted.See LER's 76-24 and 77-28~o B for similar occurrences valves ino erable 1 4 9 joaj 30 SYST414.CAV54 CAUSE CQMI." VALV 4 CQQC CQQC SV8CQOC CCMPON ENT CQOC SVBCQOC SUBCQQS~>>8 LEJS L<JS~l" 8 LFJQ L'38 1 4 9 10 I I 12 ia 1819 20 SCQUCNTIAI OCC>>IAACNCC RCPORT R CVI SION LCAIAO CVSNTVSsAA RCPORT NO, CQQC TVPC NO.Qlt 5 30 Il t L6660~I~~000 0 6 6~m~L0003~I~L L~LJ0 21 12 22 24 28'21 25 29 20 21 2'2 ACTION PUTUAC CPPECi StaUTOOWN ATTACNMCNT NPROW PRIME CQMS.COMPONENT TAKEN ACTIC'I CNPLANT MCTIIQO IIOUAS ZZ SUBMITTKO POAMSUB.SUPPUCR MANVPAC,URER

~xo~zo~IS~18~00 0 0 LJQ~NQ~IS~H2 3 0 04<<3 24 at 40 41 44~41 CAUSE OKSCRIPTIOPI ANO CORRBCTIVB ACTIONS Qzl o V-5201 and V-5204 are containment isolation valves for the ressurizer sur e line'sam le i in.The valves had become caked with cr stalline boric acid de osits which limited their"shut" stroke.The valves were freed, exercised and laced back into service.No further roblems have been noted;The valves will be re aired durin S rin refuelin.Q~Q aa LJ8~>~0 4 9 10 I'2 15 44'~>>VITV CONTENT ACI.CASCO OP RELIC AMOUNT QP ACTIVITY QSS~IB~Z Q33.~ZQ3.NA 1 3 9 10 Il 44 PCASONNCL fAPQSVACS~ll~0>>0 0 EQ33 Z Qaa 1 5 11 12 PSASONNCL INJUA34 J~33~00 0 IQ~~BO32 45 NA NA 1'9 11 12 LCSSQP CR OAMAQC>>O PACILITV Q43.VPs OES~IPTIQN

~ZQ42 9 10 PUBLIC'T.~CQ QCSCAIPT:QN GS)WLIQ a~0 NA NA M.A.Schoppman NAME OF PRBSARER 1 MCTIIOO QP OTIIERSTATUS QISCQVERY olscovcRY QCscAlpTIQN Qaz Periodic Survei 1 1 ance 40 NA LOCATION QP RELEASE QSB ao 20 NRC USF ONI.Y!(I t tlat I 48 49 30 ,,.305 552-3802 Booazzogpg

.Reportable Occurrence 335-80-6 Licensee Event Report Page Two 8 Additional Correct'ive Action Further maintenance is planned for the Spring refueling to help preclude recurrence of boric acid deposits restricting operation of V-5201 and V-5204.