ML19263C034
| ML19263C034 | |
| Person / Time | |
|---|---|
| Site: | Fort Saint Vrain  |
| Issue date: | 01/25/1979 |
| From: | Justin Fuller PUBLIC SERVICE CO. OF COLORADO |
| To: | Gammill W Office of Nuclear Reactor Regulation |
| References | |
| P-79025, NUDOCS 7902020169 | |
| Download: ML19263C034 (1) | |
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L,_ 22.J January 25, 1979 Fort St. Vrain Unit No. 1 P-79025 Mr. William P. Gammill Assistant Director for Standardization and Advanced Reactors Division of Project Management U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Docket No. #50-267 Subject : Extension of Cycle 2 (Reload 1)
Operation Gentlemen:
In the month of March,1979, six of the thirty-seven fuel regions in the Fort St. Vrain (FSV) core will be replaced with fresh fuel elements.
With the exception of eight fuel test elements, the replacement fuel ele-ments are identical to the fuel elements existing in the core, having changes made only in the fuel and burnable poison Icr. dings to satisfy the reactivity and power distribution requirements of C3:le 2.
An analysis of the Cycle 2 core was g formed to determine if opera-tion of the core could be extended from 150 effective full-power days (EFPD) to 200 EFPD.
Results of the analysis indicate that operation of the FSV core for up to 200 EFPD is acceptable, would not involve an un-reviewed safety question per the guidelines of 10CFR 50.59, and would not require a change to the FSV Technical Specifications.
A recommendation to extend the Cycle 2 operation from 150 to 200 EFPD was subsequently submitted to the FSV Nuclear Facility Safety Committee for considerat-on and received approval on October 24, 1978.
As required by FSV Technical Specification LC04.1.8, an approved, revised Base Reactivity Curve for the extended Cycle 2 will be forwarded to the Office of Nuclear Reactor Regulation shortly after the upcoming refueling.
Very truly yours, V
.. Fuller, Vice President Engineering and Planning O
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