ML20041F495

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Final Rept Re Undersized Circuit Breaker Wiring in 480-volt Motor Control Ctrs.All 480-volt Motor Control Ctrs Inspected.Twelve Circuit Breakers Identified as Deficient. Wiring Will Be Replaced
ML20041F495
Person / Time
Site: Zimmer
Issue date: 03/08/1982
From: Borgmann E
CINCINNATI GAS & ELECTRIC CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, QA-1656, NUDOCS 8203170015
Download: ML20041F495 (2)


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Ti1E CINCINNATI GAS & ELECTRIC COMPANY seg CINCINNATf. OHIO 452ol March 8, 1982 QA-1656 C. A. BORGM ANN SENSOR WCE PREMOENT U. S. Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 g.

N Attention:

Mr. J. G. Keppler Regional Administrator REC??lwo 2

RE:

WM. H. ZIMMER NUCLEAR POWER STATION - UNIT 10CFR50.55(e) - ITEM E UNDERSIZED CI UIT D 1 oi98 h k BREAKER WIRING IN 480V MOTOR CONTRCL CENTE M UQ p

DOCKET NO. 50-358, CONSTRUCTION PERMIT NO. rA 3

CPPR-88, W.O. #57300 JOB E-5590 FILE NO. NR J7 k c/

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Gentlemen:

This letter constitutes an final report concerning the subject deficiency, initially reported to Mr. W. F. Christianson of 'he NRC under the requirements of 10CFR50.55(e).

All of the 480V motor control centers at this facility have been inspected to verify that the wiring is the proper size, as specified by the manufacture.

Deficiencies were identified on three (3) safety related and three (3) non-safety related motor control centers, involving a total of twelve (12) circuitbreakers.

The wiring on these circuitbreakers will be replaced with correctly sized wire.

Two (2) safety related circultbreakers have already been rewired. The re-mainder will require ordering additional wire. Actions necessary to close this item are expected to be completed by June 30, 1982.

To prevent recurrence of this deficiency, construction personnel will be notified to assure that correct wiring is installed whenever soch changes are made.

Futhermore, the architect / engineer has been requested to include a note on appropriate wiring diagrams that instructs field personnel to verify that circuitbreaker wiring is of correct size.

MAR l '0 1982 8203170015 820300 PDRADOCKOSOOOg SGJ7%

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'6Mr. J. G. Keppler

.j U. S. Nuclear Regulatory Comnission Region III March 8, 1982 - QA-1656 Page 2 We trust the above will be found acceptable as a final report under 10CFR50.55(e).

Very truly yours,

~

' THE CINCINNATI CAS &' ELECTRIC COMPANY W %r : -

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,E. A. BORGMANN SENIOR VICE PRESIDENT WPC/FKP/ac cc: NRU' Resident Inspector Attn:

W. F.'Christianson NRC Office of Inspection & Enforcement Waahington, D.C 20555 A

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