ML18029A759

Forwards Safety Evaluation Accepting 840918 Response to NRC 840619 Request for Addl Info Re Possible Consequences of Potential Overvoltage Condition When Using Backup 161 Kv Offsite Power Source

ML18029A759
Person / Time
Site:	Browns Ferry
Issue date:	07/31/1985
From:	Vassallo D Office of Nuclear Reactor Regulation
To:	Parris H TENNESSEE VALLEY AUTHORITY
Shared Package
ML18029A760	List: ML18029A759 ML18029A761
References
NUDOCS 8508080134
Download: ML18029A759 (3)

Text

0 July 31, 1985 Docket Nos.

50-259/260/296 Mr. Hugh G. Parris Manager of Power Tennessee Valley Authority 500A Chestnut Street, Tower II Chattanooga, Tennessee 37401

SUBJECT:

ADEQUACY OF STATION ELECTRIC DISTRIBUTION SYSTEM VOLTAGES - VERIFICATION TESTING Re:

Browns Ferry Nuclear Plant, Units I, 2 and 3

Your previous submittals on the above generic issue had satisfactorily resolved all concerns except the possible consequences of a potential over-voltage condition under some circumstances when using the backup 161 kV offsite p'ower source.

We have reviewed your response of September 18, 1984 to our request of June 19, 1984 and have discussed the test programs with your staff.

Our Safety Evaluation is enclosed.

We have concluded that the additional information you provided satisfactorily resolves the issue of a potential over-voltage condition at Browns Ferry.

Sincerely, Original signed by/

Enclosure:

As stated cc w/enclosure:

See next page Domenic B. Vassallo, Chief Operating Reactors Branch ¹2 Division of Licensing DISTRIBUTION

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Mr. Hugh G. Parris Tennessee Valley Authority Browns Ferry Nuclear Plant Units 1, 2, and 3

CC:

H. S. Sanger, Jr., Esquire General Counsel Tennessee Valley Authority 400 Commerce Avenue E 11B 330 Knoxville, Tennessee 37902 Mr. Ron Rogers Tennessee Valley Authority 400 Chestnut Street, Tower II Chattanooga, Tennessee 37401 Mr. Charles R. Christopher

Chairman, Limestone County Commission Post Office Box 188

Athens, Alabama 35611 Ira L. Meyers, M.D.

State Health Officer State Department of Public Health State Office Building Montgomery, Alabama 36130 Mr. H. N. Culver 249A HBD 400 Commerce Avenue Tennessee Valley Authority Knoxville, Tennessee 37902 Regional Administrator, Region II U. S. Nuclear Regulatory Commission 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Mr. Steven Roessler U. S. Nuclear Regulatory Commission Reactor Training Center Osborne Office Center, Suite 200 Chattanooga, Tennessee 37411 James A. Coffey Site Director, BFNP Tennessee Valley Authority Post Office Box 2000

Decatur, Alabama 35602 Resident Inspector U. S. Nuclear Regulatory Commission Route 2, Box 311

Athens, Alabama 35611 Mr. Donald L. Williams, Jr.

Tennessee Valley Authority 400 West Summit Hill Drive, W10B85 Knoxville, Tennessee 37902 Robert L. Lewis, Manager, BFNP Tennessee Valley Authority Post Office Box 2000

Decatur, Alabama 35602