ML19340D482

LER 80-098/03L-0:on 801122,main Steam Flow Indicator FI-MS-484 Was Pegged Low.Caused by Transmitter Bypass Valve FT-MS-484 Not Being Fully Closed.Valve Closed

ML19340D482
Person / Time
Site:	Beaver Valley
Issue date:	12/18/1980
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19340D478	List: ML19340D477 ML19340D481 ML19340D482 ML19340D484 ML19340D485 ML19340D487
References
LER-80-098-03L, LER-80-98-3L, NUDOCS 8012300670
Download: ML19340D482 (2)

Text

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NRC FCCM 364 U. S. NUCLE A3 fiEGULATO3Y COMMISSION (7-771

' LICENSEE EVENT REPORT O CONTROL BLOCK: l i

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EVENTDESCRIPTION AND PROSASLE CONSEQUENCES @

g l At 1525 hours0.0177 days <br />0.424 hours <br />0.00252 weeks <br />5.802625e-4 months <br /> with the reactor operating at about 30 percent power, oporator I gl surveillance of the board revealed that main steam flow indicator FI-MS-484 was l

[aj.;l pegged low. Actual steam flow was about 1 million ihm/hr. All associated bistable l 1 o 15 I I switches were placed in " trip" as required by Technical Specifications 3.3.1.1 and l lo is ] I 3.3.1.2. The health and safety of the ceneral public was not jeopardized since the l lo 7l l redu idan:. channel was operable and capable of actuation. l I

t ais i i so 7 8 9 COMP. VALvf SYSTEM CAUSE CAUSE CODE cOCE SUSCCDE COMPONENT CODE susCCCE tuacocE loisi 7 8 lI l A l@ W@ l C lh lI lN l S I T l R l U l@ lT l@ l Z l @

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4A a7 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS l i l o l l The transmitter, FT-MS-484, bypass valve was not fully closed. The valve was fully i 12 iiiI closed and the channel checked for proper indication. I I

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- Attachment To LER 80-98/03L Beaver Valley Power Station Duc,uesne Light Company Docket No. 50-334 No further information is available or needed to satisfy the reporting requirement l

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