05000318/LER-1981-009-03, /03L-0:on 810330,during Normal Power Operation, Motor Operated Isolation Valve in Saltwater Sys Would Not Operate Electrically.Caused by Tripped Overload Devices on Phase a & C.Devices Reset

/03L-0:on 810330,during Normal Power Operation, Motor Operated Isolation Valve in Saltwater Sys Would Not Operate Electrically.Caused by Tripped Overload Devices on Phase a & C.Devices Reset

ML20004D639
Person / Time
Site:	Calvert Cliffs
Issue date:	04/30/1981
From:	Rizzo P, Wenderlich R BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20004D630	List: 05000318/LER-1981-009, Forwards LER 81-009/03L-0 05000318/LER-1981-009-03, /03L-0:on 810330,during Normal Power Operation, Motor Operated Isolation Valve in Saltwater Sys Would Not Operate Electrically.Caused by Tripped Overload Devices on Phase a & C.Devices Reset
References
LER-81-009-03L, LER-81-9-3L, NUDOCS 8106090604
Download: ML20004D639 (1)

LER-1981-009, /03L-0:on 810330,during Normal Power Operation, Motor Operated Isolation Valve in Saltwater Sys Would Not Operate Electrically.Caused by Tripped Overload Devices on Phase a & C.Devices Reset

Event date:
Report date:
3181981009R03 - NRC Website

text

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LICENSEE EVENT REPORT j

A n.. Rol block:

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7 8 9 UCENSEE CODE 14 15 UCENSE Nuv8ER 25 26 LICENSE TYPE JO 57 CAT 58 con'T 8

$$,5 l L l@l 0 l 510 l 010 l 311 18 l@l0 l3 13 l018 l1 l@l0 14 13 10 18 11 l@

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60 61 COCKET NUM8ER 68 69 EVENT CATE 74 75 REPORT CATE 80 w

EVENT DESCRIPTloN AND PROBABLE CCNSECUENCES h 10121l During nomal power operation at 1730 a motor coerated isolation valve l

IOl2l l (2-MOV-5251) in the salt water system suoply to the circulating water l

10 a i i aump room air coolers would not ooerate electrically.

Since it would not l

IO isI I have responded properly to a SIAS signal, this is reportable under T.S.

l

!O is I I 3.7.5.1.

The overloads were immediately reset and the valve tested sat-1 IOI7i l is factorily. The redundant in-series MOV was shut during this event.

I i O is i i

Similar events

none.

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- 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LE R/RO EVENT YEAR REPORT NO.

CODE TYPE N O.

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33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTloN AND CORRECTIVE ACTIONS lilCi l Overload device on Phase A and C were trinced.

These were reset and the I

11 lil I valve was stroked several times while monitorino motor current.

The I

ii l 21 I valve stroked satisfactorily; current readinas were nomal. No oroblems I

iii3l l with valve coerati( n were observed.

The motor and breaker are tested I

i i 14 I annually. No further oreventive action is deemed necessary at this time.

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'6POWEA OTHER $TATUS dis O RY DISCOVERY OESCRIPTION W [Ej @ lll 0lCJ@l NA l' lAl@l Ooerator Observation l

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RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE l1 PERSCNNEL EXPOSURES NUP.*8 E R TYPE

DESCRIPTION

l i 171 10 l 0 l 0 l@l Z l@l NA l

PERSONNEt mu'l'iES cESCRiPTiO~@

NuuSER li la l l 01010 l@l NA l

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LOSS OF OR CAMAGE TO FACluTY TYFE DESCRIPTICN Il9I[1]@l NA l

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