ML19338E890

LER 80-026/03L:on 800903,during Normal Operation,Hpci Pump Discharge Valve Indicating Lights Failed.Caused by Tripped Overload Relay.Valve Reset & Cycled Several Times to Verify Proper Operation

ML19338E890
Person / Time
Site:	Vermont Yankee
Issue date:	10/03/1980
From:	Murphy W VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19338E886	List: ML19338E885 ML19338E890
References
LER-80-026-03L, LER-80-26-3L, NUDOCS 8010060268
Download: ML19338E890 (1)

Text

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7 8 60 61 DOCKET NUMBER 66 69 EVENT DATE 75 REPORT DATE EVENT DESCRIPTION AND PROBASLE CONSEQUENCES h Ioi2l l During normal operation an operator noted a lack of indicating litc:s on valve V23-19 l

[o i3i ; HPCI pump discharge valve. The cause was determined to be a loss of control power l io i4 i j which resulted in the HPCI System not being operable as required by T.S.3.5.E. Test-l i o i ., j l ing of redundant systems was commenced as required by T.S.4.S.E.2. There were no l I0 is l I adverse consequences to public health or safety as a result of this event. This l l 0 I 71 i event is not a repetitive occurrence. I I

101811 80 7 89-DE CODE S BC E COMPONENT CODE SUsCODE S E O 9 l S l F l@ lE lh d @ l R l E l L l A l Y l X lh [D_j@ d h 20 7 8 9 10 11 12 13 . 18 19 SEOVENTI AL OCCURRENCE REPORT REVISION LER RO EVENT YEAR REPORT NO. CODE TYPE NO.

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40 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l i l 0 l l The cause of the failure was tripping of the 300% overload relay in the D. C. Starter.1

[TTTI l There was no indication of overload, nor had the lower settine overload reinv t rinnad l i, i7i } The relay was reset and the valve was cycled several times satisfactorily to verify I g y l proper operation. The relay is an overcurrent relay used in a Westinghouse 125V I g l CL 9022C 54 3PT DC Starter. 80 I

7 8 9 ST '6 POWER OTHER STATUS OtS O RY DISCOVERY DESCRIPTION Operator Observation II l 5 I [E_J@ l O l 8 l 9 l@l NA l lBl@l l J:.CTIVITY CO TENT AMOUNT OF s.CTIVITY LOCATION OF RELE ASE

r. ELE ASED OF RELE A"E I1 16 l [Z_] @ (_Zj@l NA l l NA j 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCR18 TION NA l QQJ' l'0 l 0 l0 l@l Z l@l" PE RSONNE t iN;uWiEs NUMBER DESCRIPTION y l 0 l 0 l0 l@l NA 80 l

7 8 9 11 12 LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION NA l l i l o8l 9[Z_J@lto 80 7

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NAME OF PREPARER