ML20078A463

First Interim Deficiency Rept 87 Re GE 480-volt Breakers AKR-4A-50 Wiring Error.Initially Reported on 830816.Jumper Wire Will Need to Be Removed for Proper Breaker Operation. Final Rept Will Be Submitted by 831206

ML20078A463
Person / Time
Site:	Waterford
Issue date:	09/09/1983
From:	Drummond F LOUISIANA POWER & LIGHT CO.
To:	Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
10CFR-050.55E, 10CFR-50.55E, W3I83-0307, W3I83-307, NUDOCS 8309230274
Download: ML20078A463 (2)

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LOUISI AN A / 342 ouAnoNoe sinta POWER & LIGHT / p O Box 6000

• NEW ORLEANS. LOutSIANA 70174 1504) 366-2345

000 sIsE u E September 9, 1983 W3183-0307 Q-3-A35.07.87 Mr. John T. Collins Regional Administrator, Region IV h h.]h3 W ~ '

U. S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 S& l O E Arlington, Texas 76012 ,_

SUBJECT:

Waterford SES Unit No. 3 ~~

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Docket No. 50-382 Significant Construction Deficiency No. 87 "GE 480V Breakers AKR-4A-50, Wiring Error" First Interim Report

REFERENCE:

Telecon Between W. J. Baldwin (LP&L) and W. A. Crossman (NRC) on August 16, 1983

Dear Mr. Collins:

In accordance with 10 CFR 50.55(e), attached are two copies of the interm response to Significant Construction Deficiency No. 87, "GE 480V Breakers AKR-4A-50, Wiring Error." This item was previously identified as PhD No. 122.

Very truly ours, ym F. J. Drummond Nuclear Services Manager cc: 1) Director 3) Mr. E. L. Elake Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission I Washington, D.C. 20555

2) Director 4) Mr. W. M. Stevenson Office of Management Information and Program Control U. S. Nuclear Regulatory Commission Washington, D.C. 20555 8309230274 830909 PDR ADOCK 05000392 S PDR

4 INTERIM REPORT OF SIGNIFICANT CONSTRUCTION DEFICIENCY NO. 87 "GE 480V BREAKERS AKR-4A-50, WIRING ERROR" INTRODUCTION This report is submitted pursuant to 10CFR50.55(e). It describes a wiring error identified in GE 480V breakers.

To the best of our knowledge this deficiency has not been reported to the USNRC pursuant to 10CFR21.

DESCRIPTION It has been determined that the GE factory wiring for 480V breakers (AKR-4A-50) located in safety and nonsafety related switchgear is not in accordance with the manufacturer's control wiring diagram. A jumper wire was installed by the vendor between the breaker's 52X contacts and the 52W coil causing the closing circuit to open prematurely by the early energization of the 52W antipump coil.

SAFETY IMPLICATIONS If left uncorrected, the breakers may fail to close thereby inhibiting actuation of safety related loads required to mitigate the consequences of an accident.

CORRECTIVE ACTION TAKEN The breakers' internal wiring was checked by a GE Service Representative who verified that the jumper wire needed to be removed for proper breaker operation. NCR-W3-6566 was initiated to track and document the removal of the jumper wire.

An update or Final Report will be submitted by December 6, 1983.