ML19290C987
| ML19290C987 | |
| Person / Time | |
|---|---|
| Site: | Fort Saint Vrain  |
| Issue date: | 02/07/1980 |
| From: | Warembourg D PUBLIC SERVICE CO. OF COLORADO |
| To: | Kuzmycz G Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19290C988 | List: |
| References | |
| P-80021, NUDOCS 8002150290 | |
| Download: ML19290C987 (2) | |
Text
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PLATTEVILL2, COLOP ADO 80651 February 7, 1980 Fort St. Vrain Unit No. 1 P-80021 Mr. George Kuzmycz, Proj ect >bnager U. S. Nuclear Regulatory Commission Division Proj ect >bnagement Special Projects Washington, D. C.
20555 Docket No. 50-267
Subject:
Fort St. Vrain Unit No. 1 Fluctuation Tssting
Reference:
P-79293
Dear Mr. Kuzmycz:
As follow-up to the above referenced latter I am transmitting for your information one copy of RT-500H which incorporates fluctuation testing with the Region Constraint Devices (RCD) installed.
The basic test programs as outlined in P-79293 remain unchanged. The test limits and associated corrective action remain the same as those reviewed by the NRC for past fluctuation tests.
Concerning our present plans for return to power, we plan to have the helium circulator replacement work completed to allow the rise-to-power program to begin the last week in February.
In the rise-to-power program we intend to conduct RT-490, T-119, RT-524 and RT-486 outlined as items 1.,
2.,
and 3 of P-79293 to ensure that the RCD in-stallation does not represent significant changes in the core operating characteristics. Power will be increased to approximately 68% - 69%
utilizing the fluctuation threshold lines for core resistance and core pressure drop which have been established as a result of Cycle I fluctuation tests to demonstrate operation of the reactor without fluctuations to the 70% power level.
Given the unexpected outage of the unit in January and February,'
and our system load requirements, we do not intend to conduct fluctuation tests during March and April. We are tenatively looking at scheduling the fl sctuation test program in May in hopes of having preliminary data to yc's for the below 70% fluctuation test results by June 15, 1980. Depending on the results of this program requests for testing above 70% power will be initiated.
D ool Slll 800215o f
Mr. George Kuzmycz Page Two February 7, 1980 If you have any questions concerning our proposed test program or on RT-500H, please let me know as soon as possible as we are pro-ceeding with our scheduling and planning as outlined above.
Very truly yours, LLL
} } h tc >~ $u c y' Don W. Warembourg Manager, Nuclear Production Fort St. Vrain Nuclear Generating Station DW: dkm