ML20127K155

Part 21 & Final Deficiency Rept (Rdc 131(85)) Re Control Wire Insulation of 480-volt Circuit Breakers Mfg by Brown Boveri Electric Co.Initially Reported on 850403.Mods Designed to Prevent Control Wiring Damage Will Be Performed

ML20127K155
Person / Time
Site:	Perry
Issue date:	05/03/1985
From:	Edelman M CLEVELAND ELECTRIC ILLUMINATING CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
REF-PT21-85-252-000 (RDC-131-(85)), PT21-85-252-000, PY-CEI-OIE0037, NUDOCS 8505220058
Download: ML20127K155 (3)

Text

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e g F THE CLEVELAND ELECTR P.O. BOX 5000 - CLEVELAND, OHIO 44101 - TELEPHONE (216) 622-9800 - lLLUMINATING BLDG. - 55 PUBLICSQUARE Serving The Best Location in the Nation MURRAY R. EDELMAN VICE PRESIDENT NUCMAR May 3, 1985 PY-CEI/OIE0037-LQ Mr. James G. Keppler Regional Administrator, Region III Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 RE: Perry Nuclear Power Plant Docket Nos. 50-440; 50-441 Deficiency in Brown Boveri 480V Circuit Breakers

[RDC 131(85)]

Dear Mr. Keppler:

This letter is the final report pursuant to 10CFR50.55(e) on the significant deficiency concerning the potential for damage to the control wire insulation of 480 volt circuit breakers manufactured by Brown Boveri Electric Company.

Mr. J. McCormick-Barger of your office was notified on April 3, 1985 by Mr. P. Martin of The Cleveland Electric Illuminating Company (CEI) that this condition was being evaluated per Deviation Analysis Report 232.

Description of Deficiency In March 1985, Brown Boveri Electric Company filed a 10CFR21 report with the Nuclear Regulatory Commission concerning a potential defect in K-1600 and K-2000 type circuit breakers. A subsequent letter in March 1985 notified CEI that the potential defect also affected K-225, K-600, K-800, K-1200, K-1600 and K-2000 type circuit breakers. Of these, PNPP was supplied K-600, K-1200, K-1600 and K-2000 type circuit breakers for use in the R23 and R24 systems. Control wire insulation for these circuit breakers may experience damage as a result of contact with the top edge of the dust shield when the circuit breaker is racked out to the fully disconnected position with the compartment door closed.

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8505220058 850503 PDR ADOCK 05000440 iO S PDR Mgy 81985

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s Is. Jtmes b Khppler- May'3, 1985 Analysis of Safety Imolications

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. Damage to the control wiring of safety-related circuit breakers-has the. potential of preventing the operation of

-the safety-related equipment which may be controlled by

.the affected breakers.

Corrective' Action The. Brown Boveri Company has provided a procedure (IB-3503).

to repair and. protect the control wire insulation of the affected circuit breakers. Protection is-provided by a modification, attaching foam insulation to the dust shield' ,

which will prevent future damage.

The Cleveland Electric Illuminating Company will take the

'following actions to correct'this deficiency:

. Brown Boveri circuit breakers of the types identified as.affected.by this' deficiency and which are used in or. designated for.use_in safety-related applications-will lue inspected f for damaged control wiring.- Any

-damage identified will be' repaired. Inspections and any repairs will be' performed and documented in accord-ance with. Perry Nuclear Power Plant project procedures.

Nonconformance Reports NDS-ll8 and NDS-117 have been'

. issued to track resolution of this deficiency-for Units 1 and 2.respectively.

. Modifications designedLto prevent control wiring damage will be performed as specified by Brown Bove i Procedure IB-8503 and in accordance with project procecares. This-modification-will be performed on all affected circuit-breakers..

. . Documentation associated with the inspections, repairs and' modifications described above will be included in the closure package associated with Deviation Analysis Report 232. This-package will be available for inspec-tion after the work is complete.

The. inspections, repairs and modifications associated with this deficiency will be performed on a schedule which supports plant testing.

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= 3 Mr.yJCaes G.'Kcpplor. Mcy 3, 1985

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LThis is the Cleveland Electric Illuminating Company's final r i report of this' deficiency. If you have any questions,.

I pleas e .. call ~.

Sincerely, ik k  %

Murray R. Edelman Vice President Nuclear' Group-MRE:sab cc: Mr. J. A. Grobe-USNRC, Site' Office (SBB50).

Mr. D. E. Keating' USNRC, Site Office (SBB50)

. Director _

Office of Inspection and: Enforcement U.S. Nuclear Regulatory Commission Washington, D.C. 20555 U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555

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Records Center, SEE-IN Institute of Nuclear Power Operations 1100 circle 75 Parkway, Suite 1500

~ Atlanta, Georgia 30339 l

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