ML20082F287

First Interim Rept on Significant Const Deficiency 91 Re GE AKR-30/AKR-50 Circuit Breakers (Svc Advise 175-9.11) Failing to Close on Command.Next Rept by 840124.Defective Switches Will Be Replaced.Also Reported Per Part 21

ML20082F287
Person / Time
Site:	Waterford
Issue date:	11/16/1983
From:	Gerrets T LOUISIANA POWER & LIGHT CO.
To:	Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
REF-PT21-83 10CFR-050.55E, 10CFR-50.55E, 91, W3K83-1784, NUDOCS 8311280498
Download: ML20082F287 (3)

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• e IP OUISIANA OW Eil & LIG H T /Waterford 3 SES/P. O. Box B/Killona, LA 70066 hl!Ol$IYS November 16, 1983 W3K83-1784 Q-3-A35.07.91

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Mr. John T. Collins'  ;

Regional Administrator, Region IV [tg/{,lJgg3 -

U. S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 . _ . _ _ _

Arlington, Texas 76012  !

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REFERENCE:

Telecon between W. Baldwin (LP&L) and C. Oberg (NRC) on October 20, 1983

SUBJECT:

Waterford SES Unit No. 3 Docket No. 50-382 Significant Construction Deficiency No. 91 "GE AKR-30/AKR-50 Circuit Breakers (Service Advise 175-9.11)"

First Interim Report In accordance with 10CFR50.55(e), attached are two copies of the interim response to Significant Construction Deficiency No. 91, "GE AKR-30/AKR-50 Circuit Breakers (Service Advise 175-9.11)." This item was previously identified as PRD No. 128.

Very truly yours.

He T. F. Gerrets b

Quality Assurance Manager TFG:CNH:SSTG Attachment cc: Director Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D.C. 20555 (15 copies) 8311280498 831116 PDR ADOCK 05000382

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-o Mr. John T. Collins November 16, 1983 W3K83-1784 Page 2 cc: Director 0ffice of Management Information and Program Control U. S. Nuclear _ Regulatory Commission Washington, D.C. 20555 Mr. E. L. Blake Shaw, Pittman, Potts, & Trowbridge 1800 M Street, N.W.

Washington, D.C. 20036 Mr. W. M. Stevenson.

Monroe & Lemann 1424 Whitney Building New Orleans, Louisiana 70130 Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 l

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FIRST INTERIM REPORT OF SIGNIFICANT CONSTRUCTION DEFICIENCY No. 91

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"GE AKR-30/AKR-50 CIRCUIT BREAKERS (SERVICE ADVISE 175-9.11)"

INTRODUCTION This report is submitted pursuant to 10CFR50.55(e). It describes a condition at Waterford SES Unit No. 3 relative to G.E. Safety-Related AKR-30 and AKR-50 circuit breakers which may fail to close upon command. (Service Advise 175-9.11).

This deficiency has been reported to the USNRC pursuant to 10CFR21, by General Electric Company, Atlanta, Georgia.

. DESCRIPTION The service advisory covered G.E. electrically operated AKR-30 and AKR-50 circuit breakers manufactured before May 1980 which may contain defective switch (es) and improperly heat treated part(s). This possibly could result in failure of these circuit breakers to close on command.

SAFETY IMPLICATIONS The G.E. AKR-30 and AKR-50 circuit breakers supply safety-related loads. If left uncorrected, and the circuit breakers failed to close on command, the safe operation and shutdown of the plant could be compromised.

CORRECTIVE ACTION TAKEN NCR-W3-7144 was initiated to replace all potentially defective switches and improperly heat treated parts installed on AKR-30 and AKR-50 circuit breakers.

A final or updated report will be submitted to the USNRC on or before January 24, 1984.

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