ML20050D569
| ML20050D569 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 04/01/1982 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | Novak T Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8204120330 | |
| Download: ML20050D569 (2) | |
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TENNESSEE VALLEY AUTHORITY CH ATTANOOG A, TENNESSEE 37401 N
400 Chestnut Street Tower II
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Director of Licensing
_ 7 Attention:
Mr. Thomas M. Novak, Assistant Director for Operating Reactors Division of Licensing U.S. Nuclear Regulatory Commission Washington, DC 20555
Dear Mr. Novak:
In the Matter of the
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Docket Nos. 50-259 Tennessee Valley Authority )
50-260 50-296 In my letter to you dated June 12, 1981 (item 10), we committed to provide the Browns Ferry protected area with at least 0.2 footcandles (fc) illumination by April 1, 1982. This letter will confirm the telephone conversations related to this commitment with D. R. McGuire of NRC-Region II on March 29 and 31 and with B. Siegel, C. Gaskin, and R. Clark of your staff on March 30 and 31, 1982.
In these discussions, we indicated that the protected area at Browns Ferry is illuminated to at least 0.2 fc from the primary 161-kV power source. We have, as of March 29, 1982, identified seven areas for which the 0.2 fc lighting is satisfied, but which do not have a 500-kV backup power supply available. Enclosed is a listing of these areas.
We believe the loss of all 161-kV power feed is remote and that the square footage of the areas in question is insignificant.
Therefore, we have elected not to provide 500-kV backup power supply to these areas. We have taken procedural steps which will be implemented for these subject areas should the loss of 161-kV power These steps will ensure that the level of physical security occur.
is not reduced if the 161-kV power is lost. It must also be stressed that even in the remote event of loss of all 161-kV power these subject areas would still be illuminated although not to 0.2 fc.
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Mr. Thomas M. Novak April 1, 1982 We further indicated that we plan to submit a revision to the Browns Ferry Physical Security Plan to clarify the power feed for these areas.
We request the enclosure to this letter be withheld from public disclosure under the provisions of 10 CFR 2.790(d).
Please inform us immediately if you have any concerns regarding the above.
Very truly yours, TENNESSEE VALLEY AUTHORITY L. M.' Mill's,
naget-Nuclear Regulation and Safety Subscribed an sworn to fore
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Enclosure cc:
U.S. Nuclear Regulatory Commission (Enclosure)
Region II ATTN: James P. O'Reilly, Regional Administrator P.O. Box 2203 Atlanta, Georgia 30301 l
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