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yzto INDIANA MICHIGANELECTRIC CDMPANY DONALDC. COOK NUCLEAR PLANT P.O. Box 468, Bridgman, Michigan 49106 (616) 465-6901 February 28, 1980 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-74 Docket No. 50-316
Dear Mr. Keppler:
Pursuant to the requirements of the Appendix A Technical Specifications, the following report/s are submitted:
RO 80-005/03L-0 RO 80-006/03L-0 RO 80-007/03L-0 Sincerely,
~ D.V. Shaller Plant Manager
/bab cco J.E.
Dolan R.S. Hunter R.W. Jurgensen R.F. Kroeger R.W. Kilburn R.E. Masse RO:III R.C. Callen MPSC G. Charnoff, Esq.
G. Olson J.M. Hennigan W. Lavallee EPRI PNSRC J.F. Stietzel E.L. Townley Dir., IE (30 copies)
Dir., MIPC (3 copies)
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NRC F0+1 366 U. S. NUCLEAR REGULATORY COMMISSION 0-77}
tCENSEE EVENT REPORT
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8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES ~10 A RE-EVALUATION OF CALIBRATION DATA TAKEN DURING THE LAST REFUELING OUTAGE REVEALED THE DIFFERENTIAL STEAM LINE PRESSURE SETPOINT FOR LOOPS 3 AND 4 BE NON-CONSERVATIVE IN RESPECT TO THE LIMIT SPECIFIED BY T.S.
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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.
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0 Qoo 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS F27)
THE EVALUATION OF THE TRANSMITTER CALIBRATION DATA FOR LOOPS 3 AND 4, TRANSMITTER-MPP 230 and 240, REVEALED THAT THE COMBINED ERRORS OF AS FOUND.DATA WOULD HAVE RE-SULTED IN A MAXIMUM POSSIBLE TRIP SETPOINT OF 127.6
- PSIG, THIS ERROR IS ATTRIBUTED TO INSTRUMENT DRIFT.
THESE TRANSMITTERS WERE RECALIBRATED AND RETURNED TO SERVICE.
3 THESE TRANSMITTERS ARE MANUFACTURED BY FOXBORO MODEL NO. EllGM-HSAEl. SEE SUPPLEMENT.
7 8
9 FACILITY STATUS
% POWER OTHER STATUS OBO 6
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10 12 13 44 45 46 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ LOCATIONOF RELEASE Q36 CZa ~z O33
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10 44 45 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION 7 ~00 0
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11 12 13 PE RS0NN E L INJUR IES 80 80 80 80 7
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9 10 PUBLICITY ISSUFD DESCRIPTION~
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10 NA NAME OF PREPARER J.
L. Rischling 9
11 12 LOSS OF OR DAMAGETO FACILITYQ43 TYPE DESCRIPTION Z
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68 69 616-465-5901 80 NRC USE ONLY 7O 7
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ATTACHMENT TO LER 4 80-005/03L-0 SUPPLEMENT TO CAUSE DESCRIPTION NO FURTHER ACTIONS ARE PLANNED.