ML20137K999

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Notifies That Design Changes in Emergency Diesel Generator Control Logic Circuitry Implemented,Per 850913 Commitment. Changes Assure That Failure Will Not Interfere W/Operation of Redundant Generator.Ltr Supersedes
ML20137K999
Person / Time
Site: Fort Saint Vrain Xcel Energy icon.png
Issue date: 01/14/1986
From: Warembourg D
PUBLIC SERVICE CO. OF COLORADO
To: Berkow H
Office of Nuclear Reactor Regulation
References
P-86015, TAC-59801, NUDOCS 8601240318
Download: ML20137K999 (2)


Text

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Public Service ~ = #l 1 ,.

2420 W. 26th Avenue, Suite 1000, Denver, Colorado 80211 January 14, 1986 Fort St. Vrain Unit No. 1 P-86015 Director of Nuclear Reactor Regulation U.S. Nuclear Regulatory Comission Washington, DC 20555 Attn: Mr. H.N. Berkow, Project Director Standardization and Special Projects Directorate Docket No. 50-267

SUBJECT:

Emergency Electrical Power System Independence

REFERENCES:

1) PSC Letter Warembourg to Jchnson dated June 14, 1985 (P-85208)
2) NRC Letter Johnson to Lee dated July 10, 1985 (G-85268)
3) PSC Letter Warembourg to Hunter dated September 13, 1985 (P-85313)
4) PSC Letter Warembourg to Berkow dated December 17, 1985 (P-85475)

Dear Mr. Berkow:

Please void from your files the Public Service Company letter Warembourg to Berkow dated January 3, 1985 our number P-86003. This letter shall supersede the orignal letter which was inadvertently dated 1985.

In a letter dated September 13, 1985 (Reference 3), Public Service Company (PSC) committed to the implementation of design changes /

involving the Emergency Diesel Generator (EDG) control logic (

circuitry. ,. 00(

8601240318 060114 ( p PDR ADOCK 05000267 D PDR

. .-. . . . - = . -- - - . - - . .. ._ - - .. . -- .. . ...

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~~ The aforementioned design changes have been implemented and will assure that no single failure will interfere with the proper

operation of a redundant EDG.

1 Should you have any questions regarding this matter, please contact Mr. M. H. Holmes at (303) 480-6960.

1 i Very truly yours, b

j 0D.W.VWarembourg,

/Ynd ger Nuclear Engineering Division DWW/BS:pa I

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