ML19345C329

Forwards GA-C15767, Investigations of Fort St Vrain Cycle 2 Reactor Fluctuations Through 791026.

ML19345C329
Person / Time
Site:	Fort Saint Vrain
Issue date:	12/02/1980
From:	Swart F PUBLIC SERVICE CO. OF COLORADO
To:	John Miller Office of Nuclear Reactor Regulation
Shared Package
ML19345C330	List: ML19345C329 ML19345C333
References
P-80417, NUDOCS 8012040404
Download: ML19345C329 (2)

Text

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i e pubHe Service Company cf Od endo 12015 East 46th Avenue, Suite 440; Denver, CO 80239 December 2, 1980 Fort St. Vrain I Unit No.1 P-80417 Mr. James R. Miller, Chief Special Projects Branch Division of Project Management Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Docket # 50-267

Subject:

Cycle 2 Fluctuation Analysis i Report for Period Before Installation of Region Constraint Devices

References:

(1) NRC letter from T.P.

. Speis to J.K. Fuller a O m (G-78111) dated fl.tiu ~ W 5:

Hovember 22, 1978 f5] E ,ym (2) PSC letter from J.K.

v171 059 Fuller to W.P. Gammill N! -m F[$j (P-79032) dated

,q g ~,;w January 29, 1979 a -

le ,

i W (3) PSC letter from F.E.

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M Swart to S. A. Varga (P-79287) dated November 28, 1979 (4) PSC letter from F.E.

Swart to S. A. Varga (P-80048) dated March 10,1980 Gentlemen:

At an NRC open meeting held in Denver on November 3 and 4,1978, the NRC requested that PSC submit a report on the results of the below 70 percent

- fluctuation testing for NRC review (See Reference (1) ).

[801204040Y h

_ m

P-80417 December 2,1980 Page 2' References (2) through (4) previously forwarded to the NRC the analyses of the fluctuation test results (General Atomic Report GA-015369, Volumes 1 and 2) perfonned on the Fort St. Vrain Cycle 1 core at power .

levels up to 70 percent.

Attached for your. review is General Atomic Report GA-C15767, " Investigations of the Fort St. Vrain Cycle 2 Reactor Fluctuations through October 26, 1979." This report analyzes the Cycle 2 fluctuation testing results performed prior to the installation of the region constraint devices at reactor power levels up to 70 percent. These results were previously discussed with the NRC at a meeting held at Fort St. Vrain on November 20, 1979.

Cycle 2 fluctuation testing at reactor power levels up to 70 percent with the region constraint devices installed was performed in November 1980. The results of these tests are presently being analyzed and will be forwarded to the NRC when the written report becomes available.

Very truly yours, f

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.;sc ./ W PA Frederic E. Swart Nuclear Project Manager FES/MHH:pa Attachment

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