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 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 Ui S NUCI.BAR REGULATORY COMMISSION IT 21 I LlCENSEE EVENT REPORT 1

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Q EVENT OBSCRIPTION ANO PROBABLB CONSBOU&IC eriodic exercise of containment isolation valves AP 0010125 it S QIO

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~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

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for similar occurrences valves ino erable Qlt LCAIAO 5 30 Il t

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3 0 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 .

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0 48 49 30 NAME OF PRBSARER M. A. Schoppman ,,. 305 552-3802 Booazzogpg

. 8 Reportable Occurrence 335-80-6 Licensee Event Report Page Two 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.