05000315/LER-1979-056, Forwards LER 79-056/03L-0

Forwards LER 79-056/03L-0

ML17318A469
Person / Time
Site:	Cook
Issue date:	11/26/1979
From:	Shaller D INDIANA MICHIGAN POWER CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17318A470	List: 05000315/LER-1979-056, Forwards LER 79-056/03L-0 05000315/LER-1979-056-03, /03L-0 on 791027,opening Torque on Two Ice Condenser Lower Inlet Doors Exceeded Max Tech Spec Limit. Caused by Door Springs Slightly Stiffer than Doors on Other Bays.Spring Tension Bolts Adjusted
References
NUDOCS 7912040384
Download: ML17318A469 (5)

LER-1979-056, Forwards LER 79-056/03L-0

Event date:
Report date:
3151979056R00 - NRC Website

text

@loon ysto IVDIANA8 M)CHIGAIIIPDt/I/ER CDMP III DONALD C. COOK NUCLZAR PLANT P.O. Box 458, Bridgman, Michigan 49106 November 26, 1979 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/s are submitted:

RO 79-056/03L-O.

Sincerely, D.V. Shaller Plant Manager

/bab cc:

J.E.

Dolan R.W. Jurgensen R.F. Kroeger R.W. Kilburn R.J. Vollen BPI R.E.

Masse RO:III R.C. Callen MPSC P.W. Steketee, Esq.

R. Walsh, Esq.

G. Charnoff, Esq.

G. Olson J.M. Hennigan PNSRC J.F. Stietzel E.L. Townley Dir., IE (30 copies)

Dir., MIPC (3 copie goo>

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U. S CLEAR REGULATORY COMMISSION NRC "5

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SOURCE 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUE NCES Q10 DURING THE PERFORMANCE OF A SURVEILLANCE TEST PROCEDURE, THE OPENING TORQUE ON TWO OF" THE ICE CONDENSER LOWER INLET DOOR

( 17L AND 2 1R) 4 EXCEEDED THE MAXIMUMLIMITS AS SPECIFIED IN T.S. 4.6.5.3.1 ITEM 3.

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IT HAS BEEN FOUND THAT THE SPRINGS STIFFER THAN THOSE ON THE DOORS IN OTHER BAYS.

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ADJUSTMENT BOLTS ON DOORS 17L AND 21R WERE BACKED OUT TO BRING THE 3 OPENING TORQUE TO WITHIN ALLOWABLE VALUES

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SUPPLEMENT TO LER $79-056/03L-0 SUPPLEMENT TO CAUSE DESCRIPTION A DESIGN CHANGE HAS BEEN INITIATED TO REPLACE THE SPRING ADJUSTMENT BOLTS WITH LONGER BOLTS IN ORDER TO RELIEVE THE SPRING TENSION ON THE LOWER DOORS, (RFC 12-l762).

THE DOORS WERE IMMEDIATELYREADJUSTED WHEN THE PROBLEM WAS FOUND AND NO ACTION WAS REQUIRED BY TECHNICAL SPECIFICATIONS.

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