ML17331A155

Forwards LERs 80-020/03L-0 & 80-021/03L-0

ML17331A155
Person / Time
Site:	Cook
Issue date:	05/20/1980
From:	Shaller D INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17331A156	List: 05000316/LER-1980-020-03, /03L-0:on 800421,during Normal Operation,Noticed Excessive Steam Line Differential Pressure Between Loops 1 & 2.Caused by Instrument Drift.Transmitter Calibr & Returned to Svc 05000316/LER-1980-021-03, /03L-0:on 800429,while Performing Surveillance Test,Discovered Bistable for Steam Generator Water Level hi-hi Engineered Safety Feature Setpoint Exceeding Limit W/ Recurrence on 800430.Bistable Replaced & Calibr ML17331A155
References
NUDOCS 8005270452
Download: ML17331A155 (1)

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INDIANA & MICIIIGAN ELECTRIC COMPANY DONALDC. COOK NUCLEAR PLANT P.O. Box 458, Bridgman, Michigan 49106 (616) 465-5901 SAY 23 ]gttfj May 20, 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 80-020/03L-0 RO 80-021/03L-O.

Sincerely, D.V. Shaller Plant Manager

/bab cc:

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) f005>7D fS 2