05000315/LER-1979-026-03, /03L-0 on 790406:during Normal operation,69/4kV Offsite Ac Electrical Supply Became Inoperable.Caused by High Winds During Severe Windstorm.Damaged Jumper Replaced & Sys Returned to Operable Status

/03L-0 on 790406:during Normal operation,69/4kV Offsite Ac Electrical Supply Became Inoperable.Caused by High Winds During Severe Windstorm.Damaged Jumper Replaced & Sys Returned to Operable Status

ML17317B166
Person / Time
Site:	Cook
Issue date:	05/02/1979
From:	Chadwell H INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17317B164	List: 05000315/LER-1979-025-03, /03L-0 on 790416:time Response Data Not Collected During Apr 1976 Refueling Outage for Low Steam Pressure Engineered Safety Feature Channel.Caused by Inadvertent Procedural Omission.Checklist Will Be Used in Future 05000315/LER-1979-026-03, /03L-0 on 790406:during Normal operation,69/4kV Offsite Ac Electrical Supply Became Inoperable.Caused by High Winds During Severe Windstorm.Damaged Jumper Replaced & Sys Returned to Operable Status ML17317B163
References
LER-79-026-03L, LER-79-26-3L, NUDOCS 7905070604
Download: ML17317B166 (2)

LER-1979-026, /03L-0 on 790406:during Normal operation,69/4kV Offsite Ac Electrical Supply Became Inoperable.Caused by High Winds During Severe Windstorm.Damaged Jumper Replaced & Sys Returned to Operable Status

Event date:
Report date:
3151979026R03 - NRC Website

text

NRC FORM 366 t7-'i7)

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8 U. S. NUCLEAR REGULATORY COMMISSION tCENSEE EVENT REPORT Q1 (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION) 6 1

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1 IQE~QE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CONTROL BLOCK:

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LICENSEE CODE

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7 QB 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES QIO DURING NORMAL OPERATION, CONTRARY TO T. S. 3.8.1.1.a.,

THE 69/4KV OFFSITE A.C.

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ELECTRICAL SUPPLY WAS MADE INOPERABLE WHEN A JUMPER CABLE BURNED OFF ON A TRANS-

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MISSION POLE CAUSING LOSS OF ONE PHASE.

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8 SYSTEM

CAUSE

CAUSE COMP VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

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10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LERIRP EVENT YEAR REPORT NO.

CODE TYPE NO.

Q REPoRT ~79

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

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB.

SUPPLIER MANUFACTURER

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9 Qs 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 OF 6

DISPATCHER THAT THE FAILURE HAD OCCURRED THE MERG G

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OTHER A.C.

OFFSITE P

WER SUPPLY WE E DEMONSTRATED To BE P

B THE D MAGED 4

JUMPER WAS REPLA T

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N DISCOVERY DESCRIPTION Q32 DISPATCHER NOTIFICATION LOCATIONOF RELEASE Q36 NA C7 Cg5 57& L NRC USE ONLY 68 69 7

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10 12 13 44 45 46 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ36

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10 44 45 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39

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11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTION Q41

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11 12 LOSS OF OR DAMAGETO FACILITYQ43 TYPE

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10 P U8 LIC ITY ISSUED

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9 10 80 80 80 80 80 80 80 ~ o NAME OF PREPARER H.

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CHADWELL PHONE:

616 465-5901 X-316 D.

CONTINUATION OF LER 8 69-026/03L-0 PAGE TWO 2

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS'N TWO HOURS FIFTEEN MINUTES.

NO FURTHER ACT'ION IS PLANNED.