ML19312D496

LER 80-006/03L-01:on 800111,w/unit in Mode 3,casing Coolant Pump Discharge Valve MOV-RS-100A Was Discovered to Be Inoperable.Caused by Removal of Casing Cooling Tank Level Transmitter LT-RS103A During Execution of Design Change

ML19312D496
Person / Time
Site:	North Anna
Issue date:	02/08/1980
From:	VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19312D493	List: ML19312D492 ML19312D496
References
LER-80-006-03L-02, LER-80-6-3L-2, NUDOCS 8003240505
Download: ML19312D496 (1)

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[OE I RS-100A was discovered to be inocerable and would have been unnhie en nean in tha a . - -I l o 141 l of a CDA. Because the "A" casine cooline subsvsten was restorad en nnar,hla e*,*.e I O 5 I vithin the 7 day tire limit allowed by the applicable Technical Scacific1tinn Actinn I l o is i l statecent, the health and sa fety of the ceneral nubife vara nn+ a f far

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• ACTION SUTURE EPPECT SHUTDOWN

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44 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h ,

li 101 ]The valve was rendered inoperable due to the removal of easina cooline tank level traml-i i lmitter LT-RS103A d'uring the implementation of a desien chance. With LT-R9101 A n n e _l L'_12_1.lterminated, a low level signal resulted which in turn imposed a close stenal on MOV-Rs i i 3 1100A 'and prevented it from opening if required. LT-RS103A vas imediatelv reinst, tiled 1 g twhich restored level indication and proper valve operation. I 7 a9 a0 5A  % POWER OTH ER STATUS 01 O R DISCOVERY DESCRIPTIC 4 i s (Cj@ l 0 l 0 l O l@lNA l lA l@DperatorObservation l A TivtTY CO TENT AMOUNTOF ACTivlTY LOCATION CF RELEASE 1 6 (Z,,j rELE lZ ASE@D NA OF RELEASE l@l l l NA l 7 8 9 . 10 tt 44 46 80 PERSONNEL EXPOSURES NUVSER TYPE DESCRIPTION

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LOSS OF OR DAMACE TO FACILITY 8 lZ.J@l TYPE DESCRIPTION NA o nnq 84 0 5

7 8 9 10 80 PUBLICITY NRC USE ONLY

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