ML18219C132

Letter from Indiana & Michigan Power Co to NRC Submitting Abnormal Occurrence Reports for the Month of January 1975 (AO-50-315/75-1, AO-50-315/75-2)

ML18219C132
Person / Time
Site:	Cook
Issue date:	02/10/1975
From:	Jurgensen R Indiana Michigan Power Co
To:	James Keppler NRC/RGN-III
References
LER 1975-001-00, LER 1975-002-00
Download: ML18219C132 (10)

Text

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'CONTROL NO Rfifi FROiif: Indiana gc-Mich. Power Co. DATE O"rCOC DATE REC'D LTR OTHER Br idgman, Mich. 49106 2

-TO: ORIG CC OTHER SENT, "EC POR Mr. J. G. Kepplex 1 si ed SENT LOCAL PDR CLASS UNC LASS PROP INFO INPUT NO CYS REC'D DOC..ET NO:

50-315 DES/ RIP i!v.i! Ltr trans the i'ollowing: ENCLOSURES:

Supplement to A0-50-33.5/75>>1 dated g-7-75 h Abnormal Occurrences AO-50-.315/75-1 8G'75-2 re eireult bq(beakers..

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PI ANT NAME: Donald C. Cook Uriit 2.

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R'eguiatory Docket giIe oo

~ meoloan Qy ( INDIANA8r.MI.CHIGAN POIVER COMPANY DONALD C. COOK NUCLEAR PLANT P.O. Box 458, Bridgman, Michigan 49108 February 10, 1975 Director United States Nuclear Regulatory Commission Directorate of Regulatory Operations Region III 799 Roosevelt Road Glen Ellyn, IL 60137

References:

Operating License DPR-58 Docket No. 50-315 Attn: Mr. J.G. Keppler, Regional Director Gentlemen:

Pursuant to the requirements of Appendix A Technical Specifications and United States Nuclear Regulatory Commission, Regulatory Guide .1.16 Rev. 2, Article 2b, the following Abnormal Occurrence Reports for the month of January 1975 are submitted;,

AO-50-315/75-1 AO-50-315/75-2 R.W. J gens n,

~C Plant Manager 8<~ tgZg ~

baf cc: With Attachments:

J.E. Dolan R.S. Hunter G.E. Lien R.J. Vollen BPI K.R. Baker RO: III R.C. Callen MPSC PEW. Steketee Esq.

R. Walsh Esq'.

G. Charnoff Esq.

PNSRC R.S. Keith

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g~g)gp() g()c/9( fllB SUPPLEMENT TO AO-50-315/75-1 DATED 02/07/75 The error occurred on November 13, 1974, and was discovered during an Internal Plant Audit on January 8, 1975.

Solid State Trip Device Serial No. 4967R for ITE Circuit Breaker Model SS14 Long Time Delay Time Trip Specification is 16 seconds.

The trip element was tested on two separate trip device test sets and determined to trip between 13.79 and 14.0 seconds. The trip device was installed after testing without having properly cleared the Receipt Inspection Reject Tag.

Approval was obtained on January 17, 1975, from the Plant Manager for continued use of the trip device until a trip device with the correct setting could be obtained.

There are no safety implications involved as the trip device set point is more conservative than required.

Discussions have been conducted with plant personnel to re-emphasize the necessity for properly documenting the resolution or justification for using equipment which does not comply with specifications and the removal of Rejected Tags prior to installation of equipment.

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