05000244/LER-1979-006, Forwards LER 79-006/01T-0

Forwards LER 79-006/01T-0

ML17244A442
Person / Time
Site:	Ginna
Issue date:	04/03/1979
From:	White L ROCHESTER GAS & ELECTRIC CORP.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML17244A443	List: 05000244/LER-1979-006, Forwards LER 79-006/01T-0 05000244/LER-1979-006-01, /01T-0 on 790321:degradation in 6 Tubes of Steam Generator B.Caused by Localized Residual Caustics Erosion at Support Plates & Stress Corrosion Mechanism Re Deformation at Tube Sheet & Operationsl Stresses
References
NUDOCS 7904090158
Download: ML17244A442 (2)

LER-1979-006, Forwards LER 79-006/01T-0

Event date:
Report date:
2441979006R00 - NRC Website

text

m<iZZlllji".elZ>ir

~i'itJI//x%fIll,ltk~ulMll>1lilif ROCHESTER GAS AND ELECTRIC CORPORATION

~

PIW

~ s

~ C t ae rOtK ITAII 89 EAST AVENUE, ROCHESTER, N.Y. 14649 LEON D. WHITE, JR.

VICE PACSIDCNT TCCCPHCNE

• AC+ CaoC Vii+ 546-2700 April 3, 1979 Mr. Boyce H. Grier, Director U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region I 631 Park Avenue King of Prussia, Pennsylvania 19406

Subject:

LER 79-006/01T-O, Abnormal degradation of "B" steam generator tubes R. E. Ginna Nuclear Power Plant, Unit No.

1 Docket No. 50-244

Dear Mr. Grier:

In accordance with Technical Specifications, Article 6. 9.2.a. (3),

abnormal degradation discovered in reactor coolant pressure

boundary, the attached report of Reportable Occurrence 79-006, 14-day, is hereby submitted.

Two additional copies of this letter and the attachment are enclosed.

Very truly yours, I

L. D. White, Jr.

Attachment cc: Mr. John G. Davis (40)

Mr. William G. McDonald (3)

V904090~~~.

r' p

t