ML20137M339

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Responds to NRC 850904 Request for Info Re Board Notification 82-21 Concerning CRD Support Pin Failure. Improved Pins Incorporate Higher Heat Treatment & Parabolic Radius at Shank to Shoulder Intersect
ML20137M339
Person / Time
Site: Vogtle  Southern Nuclear icon.png
Issue date: 09/06/1985
From: Bailey J
GEORGIA POWER CO.
To: Adensam E
Office of Nuclear Reactor Regulation
References
0112V, 112V, GN-704, NUDOCS 8509130205
Download: ML20137M339 (1)


Text

Georg+a Power Company Rout; 2. Box 299A Wayn sboro. Georpo 30830 Telephone 404 554 9961 404 724 8114 Southern Cortpany Services, Inc.

R Post Office Box 2625 Birmingham. Alabama 35202 Telephore 205 870-6011 Vogtle Proj.ect September 6, 1985 Director of Nuclear Reactor Regulation File: X7BC35 Attention:

Ms. Elinor G. Adensam, Chief Log:

GN-704 Licensing Branch #4 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C.

20555 NRC DOCKET NUMBERS 50-424 AND 50-425 CONSTRUCTION PERMIT NUMBERS CPPR-108 AND CPPR-109 V0GTIE EIECTRIC GENERATING PLANT - UNITS 1 AND 2 BOARD NOTIFICATION 82-21

Dear Mr. Denton:

On September 4,1985 your staff requested information concerning Board Notification 82-21, Control Rod Drive Support Pin Failure.

For Plant Vogtle the original pins have been removed and replaced with improved pins. The improved pins incorporate a higher heat treatment and a parabolic radius at the shank to shoulder intersect.

In addition, the new pins were installed with a reduced torque (120-130 ft-lbs) on the pin nut.

If your staff requires any additional information, please do not hesitate to contact me.

Sincerely,

.k.

J. A. Bailey Project Licensing Manager f

JAB /sm Enclosure xc D. O. Foster G. Bockhold, Jr.

R. A. Thomas T. Johnson J. E. Joiner, Esquire D. C. Teper B. W. Churchill, Esquire L. Fowler M. A. Miller W. C. Ramsey B. Jones L. T. Cucwa grADOCMa o 2 0 s e s o,o,

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