ML19257B899

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Responds to NRC 791130 Ltr Re Power Supply for Emergency Telephones.Power Supply Upgraded & Design Change Initiated to Investigate Feasibility of Powering Phones from Uninterruptible Supply.Mod Could Be Complete by June 1980
ML19257B899
Person / Time
Site: Prairie Island  Xcel Energy icon.png
Issue date: 12/13/1979
From: Wachter L
NORTHERN STATES POWER CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 8001210188
Download: ML19257B899 (1)


Text

m DG NSF NORTHERN STATES POWER COMPANY MIN N E A PO LI S MIN N E SOTA 55401 December 13, 1979 Mr. James G. Keppler Director - Region III Office of Inspection and Enforcement United States Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137

Dear Mr. Keppler:

PRAIRIE ISLAND NUCLEAR GENERATING PLANT Dockets No. 50-282 and No. 50-305 In response to your letter of November 30, 1979, the power supply for emergency telephones has been upgraded. A design change has been initiated to investigate feasibility of powering these telephones from an uninterruptible supply (the station battery).

It is expected this modification could be complete by June, 1980.

Yours very truly, L. J. Wachter Vice President Power Production and System Operation cc: Mr. G. Charnoff gqd40 Pbi I- 5 E'. i774 076 pm DLd aN S0012101s's