ML19337A587

Updated LER 80-033/03L-1:on 800215,while Attempting to Start 2A RHR Room Cooler,Cooler Blower Motor Tripped on Magnetics. Caused by Low Breaker Magnetics Setting.Breaker Magnetics Reset & Breaker Satisfactorily Tested

ML19337A587
Person / Time
Site:	Brunswick
Issue date:	09/19/1980
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19337A571	List: ML19337A570 ML19337A587
References
LER-80-033-03L, LER-80-33-3L, NUDOCS 8009290309
Download: ML19337A587 (1)

Text

(1 119 LICENSEE EVENT REPORT UPDATE REPORT:

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PREVIOUS REPORT DATE 2/20/80 d

CONTROL BLOCK: { l l l l l lh 0

(PLEASE PRINT CR TYPE ALL REQUIRED INFORMATION) 7 o i 8 9

'Is Ic la P 'e 12 l@!o lo I- lo lo LsCENSEE CODE 14 15 lo lo I ol l ol ol@l LICENSE NUMBER 25 26 alLICENSE il il TYPE il il@l JO I

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ITI- l 1"!%LU@loIsloI-1011 12 14 68l@lo12 I 1I si si ol@l of alREPORT 'I alDATEa l o80l@ j 7 8 60 ;1 DOCKET NUM8ER 69 EVENT DATE 74 7b l EVENT DESCRIPTION AND PROBABLE CONSEQUENCE 3 h p l During normal operation, when an attempt was made to start 2A RHR room cooler, the l g , cooler blower motor breaker tripped on magnetics. 2B RHR room cooler was under an l

, , , , , ; existing LCO, this making both RHR LPCl loops inoperable. 2A room cooler was l g , returned to service within 15 minutes. The event has occurred before under similar l lO l6 l l ircumstances as reported in LER 2-80-1. The event did not affect the health or  ;

g g 9, g g safety of the public.

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10181l Technical Specifications 3.5.3.2. 6.9.1.oh I 7 8 9 80 C DE CODE SU8C E CouPoNENT CODE SUB DE SU E IoI9i 7 3 IC IP l@ W@ l AIh I C l K l T I B l K I R lh {lh I Zlh 9 10 11 12 13 18 19 20 SEouENTIAL OCCURRENCE REPORT REVISION LER Ro EVENT YE AR REPORT NO. CODE TYPE No.

@,agjg 18101 l-l l013131 l/l lo 13 I I tl I-l I 11 25 22 23 24 26 27 28 29 30 31 32 .

AKEN AC ON o PL NT MET HOURS S8 I FOR b 8. SUPPLI MANUFACTLRER IJJE l@lM z l@ l z l@ L?J@ 101010101 Isl@ I42V l@ Isl@ Ic lo is lo I@

35 M 37 40 di 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h li l o l l The breaker was reset, closed, and the room cooler successfully run. An investigationi g [ of the breaker and motor revealed normal megger readinas, winding resistances, and I

, , j run currents. The breaker magnetics setting, found to be slightly lower than retting l

, 3 l No 2, was reset in accordance with standard magnetic setting procedures to setting l

, 4 l No. 3. The breaker was tested satisfactorily. This is considered an isolated event. I 7 8 , 80

$A  % PoWE R OTHER STATUS dis RY olSCoVERY DESCRIPTION y (E_J@ l 019 l 7 l@l l l_A_jhl operator Surveillance i ACTIVITY con TENT fEELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE 7

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L055 OF OR DAMAGE To FACILITY h TYPE DESCRIPiloN v i o 8 .

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