05000316/LER-2078-024-03, L Re Circuit Breakers for Three Motor Operated Valves

L Re Circuit Breakers for Three Motor Operated Valves

ML18219C202
Person / Time
Site:	Cook
Issue date:	04/12/1978
From:	Shaller D Indiana Michigan Power Co
To:	James Keppler NRC/RGN-III
References
LER 1978-024-03L
Download: ML18219C202 (6)

LER-2078-024, L Re Circuit Breakers for Three Motor Operated Valves

Event date:
Report date:
3162078024R03 - NRC Website

text

g q/z /r"s REGULATORY INFORMATION DISTRIBUTION SYSTEN

<RIDS)

DISTRIBUTION FOR INCOMING I"IATERIAL 50-315 REC:

KEPPLER J G

NRC

,ORG:

SHALLER D V IN 5 NI PWR DOCDATE: 04/12/78 DATE RCVD: 04/ 18/ 7&,

DOCTYPE:

LETTER NOTARIZED:

NO COPIES RECEIVED

SUBJECT:

LTR 1

ENCL 1

LICENSEE EVENT REPT 078-024 GN 3/22/78 CONCERNING TRIPPING OF CIRCUIT BREAKERS FOR THREE NOTOR OPERATED VALVES POWERED FROhI NOTOR CONTROL CENTER i-ABV-D.

PLANT NANE: COOK "- UNIT 1

REVIEWER INITIAL:

XRS DISTRIBUTOR IhlITIAL:

DISTRIBUTION OF THIS NATERIAL IS AS FOLLOWS 4++44<<<<++<<<<+++

INCIDENT. REPORTS (DlSTRIBUTION CODE A002)

, FOR ACTION:'R CHIEF E

• ~W/4 ENCL INTERNAL:

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8r MICHIGANPDNER COM DONALD C. COOK NUCLEAR PLANT P.O. Box 458, Bridgman, Michigan 49106 April 12, 1978 Mr. J.G.

Keppler, Regional Director Office of Inspection and Enforcement United States Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, IL 60137 Operating License DPR-58 Docket No. 50-315

Dear Mr. Keppler:

Pursuant to the requirements of the Appendix A Technical Specifications, the following report is submitted:

RO 78-024/03L-O.

Sincerely, D.V. Shaller Plant Manager

/bab cc:

J.E.

Dolan R.W. Jurgensen R,F, Kroeger R. Kilburn R.J.

Vollen BPI K.R. Baker RO:III R.C. Callen MPSC P.W. Steketee, Esq.

R. Walsh, Esq.

G. Charnoff, Esq.

J.M. Hennigan G.

Olson PNSRC J.F. Stietzel Dir., IE (30 copies)

Dir., MIPC (3 copies)

1 g

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NRC,'FORM 366 I7,~

U. S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT

,Q Q

Q3 9

LICENSEE CODE 14 15 LICENSE NUMBER 25 26 k

CONTROL BLOCK (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION)

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CON'T

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8 Q/L QR LICENSE TYPE 30 57 CAT 58 soURGE ~O O

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7 8 Q 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10 DURING NORMAL OPERATION IT WAS DISCOVERED THAT THE CIRCUIT BREAKERS FOR

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,THREE MOTOR OPERATED VALVES POWERED FROM MOTOR CONTROL'ENTER

- AB -D

~O4 WERE(TRIPPED.

THIS RESULTED IN LOSS OF ONE OF THE REDUNDANT FLOW

~os PATHS FOR ONE ECCS TRAIN T. S.

3. 5. 2e AND ONE SPRAY ADDITIVE TRAIN (T. S.

~OB T 0 0 THE VALVES ARE NORMALLY CLOSED AND OPEN AUTOMATICALLY ON A CONTAINMENT SPRAY ACTUATION.

OPERATION OF THE THIRD VALVE WOULD

~OB HAVE BEEN 'RE UIRED SUBSE UENT TO L.

DURING THE RECIRCULATION PHASE.

7 8

9 80 SYSTEM

CAUSE

CAUSE COMP.

VALVE.

CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

~28 Q>>

MQEE MQ>>

Q14 ~ Q15 ~

Q16 7

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10 11 12 13 18 19 20 SEOUENTIAL OCCURRENCE REPORT LERIRO EVENT YEAR REPORT NO.

CODE TYPE Q11 REPoRT

~78

~

~02 4

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~03 LL-I 21 22 23 24 26 27 28 29 30 31 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDQ PRIME COMP.

TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB.

SUPPLIER LJ~QER ~ZQER

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~NQER LJLIQE4

~LQEE 33 34 35 36 37 40 41 42 43

CAUSE

ESCRIPTION AND CORRECTIVE ACTIONS Q27 o

THE CAUSE OF THE EVENT I'S NOT KNOW P

~OS REVISION COMPONENT MANUFACTURER QB 44 47 1

PREVIOUSLY AT SHIFT RELIEF AND 'DURING WORK IN THE MOTOR CONTROL CENTER.

THERE WERE NO PRE IOUS 3

THIS TYPE FOR THESE THREE BREAKERS.

THE BREAKERS WERE RECL 4

VALVES WERE CYCLED AND FOUND OPERABLE WITH NO RECURRENCE 7

8 9

FACILITY

~3P METHOD OF STATUS

% POWER OTHERSTATUS ~

DISCOVERY EK MQ hJo~I

~Q31 7

8 9

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

~ Q3 ~Q34 NA NA 7

8 9

10 11 44 45 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39

~00 OjQET Z

QER 7

8 9

11 12 13 PERSONNEL INJURIES Q41 DISCOVERY DESCRIPTION Q32 LOCATIONOF RELEASE Q36 80 80 80 80 7

8 9

7 8

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8 9

11 12 LOSSOF OR DAMAGETO FACILITY 43 TYPE

DESCRIPTION

Z Q2 NA 9

10 PUBLICITY ISSUED DESCRIPTION~

MQ44 A

9 10 NAME OF PREPAR<<J.

M. Randol h

80 68 69 (61 6) 465-5901 80 NRC USE ONLY 6

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