05000296/LER-1980-001-03, /03L-0:on 791230,w/Unit 3 in Shutdown,Bus Tie Board Was de-energized for Startup.Caused by Feeder Cable Failure.Work in Progress to Bypass Bad Cable Sections

/03L-0:on 791230,w/Unit 3 in Shutdown,Bus Tie Board Was de-energized for Startup.Caused by Feeder Cable Failure.Work in Progress to Bypass Bad Cable Sections

ML18024B291
Person / Time
Site:	Browns Ferry
Issue date:	01/25/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18024B290	List: 05000296/LER-1980-001, Forwards LER 80-001/03L-0 05000296/LER-1980-001-03, /03L-0:on 791230,w/Unit 3 in Shutdown,Bus Tie Board Was de-energized for Startup.Caused by Feeder Cable Failure.Work in Progress to Bypass Bad Cable Sections
References
LER-80-001-03L-01, LER-80-1-3L-1, NUDOCS 8001290598
Download: ML18024B291 (4)

LER-1980-001, /03L-0:on 791230,w/Unit 3 in Shutdown,Bus Tie Board Was de-energized for Startup.Caused by Feeder Cable Failure.Work in Progress to Bypass Bad Cable Sections

Event date:
Report date:
2961980001R03 - NRC Website

text

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LICENSEE EVENT REPORT V. o. Evu n ncERME.nsun 2

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LICENSEE CODE 14 15 LICENSE NUMBER 25 26 I.ICENSE TYPE 30 57 CAT 58

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0 QB 60 61 DOCKET NUMBER 68 69 EVENT DATE 74

. 75 RFPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Qlo With unit 3 in a shutdown condition Technical S ecification 3.9.A.4.b does not allow

~03 startup with the Bus Tie'oard deener ized.

The Bus Tie Board was deenergized due to

~04 feeder cable failure.

There was no dan er to health or safety of public.

No redundant

~OS s stems.

No previous occurrences.

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SYSTEM

CAUSE

CAUSE COMP VALVE CODE CODE SUBCODE COMPONENTCODE SUBCODE SUBCODE

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10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LERPRO EVENT YEAR REPORT No.

CODE TYPE NO.

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&0 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDP PRIME COMP.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED

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SUPPLIER MANUFACTURER

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'4 CAUSE DESCRIPTION ANO CORRECTIVE ACTIONS Q27 o

The feeder cable to the Bus Tie Board failed due to f

i s written and the work is in ro ress to install overhead b es b

sections.

Triangle, 500 HCM cable.

No recurrence control required.

METHOD OF DISCOVERY 44 45 44 45 NA!AEOF PREPARER 7

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FACILITY STATUS

% POWER OTHER STATUS Q30

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'IO 12 13 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ3S Z

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11 12 l3 PERSONNEL INJURIES NUMBER OESCRIPTIONQ4i

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I 'I 12 LOSS OF OR DAMACE TO FACILITYQ TYPE

DESCRIPTION

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9 10 PUBLICITY ISSUED DESCRIPTIONQ n

~Y Q44 Unit 3 outage 8

9 10 NA DISCOVERY DESCRIPTION Q32 LOCATIONOF RELEASE Q38 NRC USE ONLY 68 69 PHONE 8001890 80 80 80 80 80 80 vp EEa 2

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'I'e< hnical Spe<'ificati<>n Involv".d It(>I)ort(;

Dat<<nf Occut t ence l2/30/79 Time of 9ccurrence 2230 Unit Id<.ntifiration an<i I)( s< riI>tion <>I'ccurrence:

With unit 3 in a shutdown condition Technical Specifications do not allow startup with the bus tie board deenergized.

C<>n<li<i<>ns Prior to Occurrence:

Unit 1 8 82%.

Unit 2 8 97%.

Unit 3 8 0%.

A<:ti >n

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II><; 'I'<<hni(;.'>I Sp<cification Surveillance Requirements met due to inon<<! util.< ( <iuiL>met>t.

I)<:s<:t'ibe.

Unit in shutdown condition.

Api>anent Cause

<rf Vccurret)cc:

The Bus-Tie-Board was deenergized due to feeder cable failure.

Attalvsis of Occur t (.nce:

There was no damage to plant equipment.

There was no activity release, no personnel exposure or ingury and no danger to health or safety of the public.

(;<>rt e< tiv(: Acti<>n:

An instruction has been written to install overhead cables to bypass the bad sections of cable.

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