ML17317B186

LER 79-027/03L-0 on 790416:during Refueling W/Emergency Diesel Generator AB inoperable,600 Volt Bus 11D Made Inoperable by Removal of Normal Feed Breaker T1112 for Cleaning.Caused by Personnel Error.Operators Reinstructed

ML17317B186
Person / Time
Site:	Cook
Issue date:	05/09/1979
From:	Lease R INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17317B184	List: ML17317B182 ML17317B185 ML17317B186 ML17317B187
References
LER-79-027-03L, LER-79-27-3L, NUDOCS 7905150438
Download: ML17317B186 (2)

Text

s NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION (7-77 l ICENSEE EVfNT REPORT CONSOL BLOCK: (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 4 4 QI I 6

~01 M I D C C 1 14 Qo 15 0

LICENSE NUMBER 0

25 Q'426 ' LICENSE TYPE 30 Q4~Qs 57 CAT 58 7 8 9 LICENSEE CODE CON'T

~oi 7 8 os'oo~

~LQs0 60 61 5 0 0 0 DOCKET NUMBER 3 1 5 68 Q~

69 0 4 1 EVENT DATE 6 7 GQs 74 75 o 5 o REPORT DATE 80 QB EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10

~os WHILE IN THE REFUELING MODE WITH EMERGEN I G

~os 600 VOLT BUS 11D WAS ALSO MADE INOPERABLE BY REMOVAL Of NORMAL FEED BREAKER TllD2 FOR CLEANING AND INSPECTION. THIS WAS CONTRARY TO THE RE UIREM S

~os SPEC. 3.8.2.2. WHEN MISTAKE WAS REALIZED 600 VOLT BUS 11D WAS RETURNED TO

~os NORMAL FEED. TOTAL TIME INOPERABLE IIAS 1 HOUR A D 7 MI UT

~os 80 7 8 SYSTEM CAUSE CAUSE COMP. VALVE CODE COPE SUBCODE COMPONENT CODE SUBCODE SUBCODE

~ED Qss A Qio ~A Qis Z Z Z Z Z Z Q>< ~Z 19 Qis ~Z 20 Qls 7 8 9 10 11 12 13 18 SEQUENTIAL OCCURRENCE REPORT REVISION Ql>

LERJRP Rsooor ACTION FUTURE EVENT YEAR

~79 21 22 EFFECT

~

23 SHUTDOWN

~02 24 REPORT NO.

7 26

+H 27 28 ATl'ACHMENT CODE LOD3I 29 NPRDQ TYPE Us 30 PRIME COMP.

31 NO.

L~l 32 COMPONENT TAKEN ACTION ON PI.ANT METHOD HOURS Q22 SUBMITTED FORM SUB. SUPPLIER MANUFACTURER L~JQs~Qis 33 34

~ZQoo 35 LZJQ 36 37 0 0 0 0 40 DNQos 41 MNQ24 42 HZQ25 43 44 Z 9 g g Qs 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 o THIS CAME FROM A MISINTERPRETATION OF BUSES. IN APPLYING TECH. SPEC. 3.

TECH. SPEC. 3.8.2.1 DEFINES ONE BUS AS llA & 1 B R s BEING REVIEWED AND REINSTRUCTED.

~14 80 7 8 9 FACILITY STATUS H Qs ~00

% POWER DQs OTHERSTATUS NA

~ METHOD OF DISCOVERY LAJQ3i DISCOVERY DESCRIPTION Q32 OPERATOR OBSERVATION 7 8 9 10 12 13 44 45 46 80 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITY Q LOCATION OF RELEASE Q

~Z Q33 ~ZQ34 NA A 7 8 9 10 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39 00>> z Qss NA 7 8 9 11 12 o 13 80 PERSONNCL INJURIES NUMBER DESCRIPTION Q41 s

8

~00 9

0 Qso 12 NA 80 7 11 LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION Q43 9 Z Q2 NA 7 8 9 10 80 ISSUED MQ44 PUBLICITY DESCRIPTION ~ NRC USF. ONLY 9 " 10 68 69 80 ~ oo 7 8 PHONE 61 6 465 5901 X 31 3 NAME OF PREPARER

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