ML20049H834
| ML20049H834 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 02/25/1982 |
| From: | Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20049H835 | List: |
| References | |
| NUDOCS 8203040200 | |
| Download: ML20049H834 (1) | |
Text
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SACRAMENTO MUNICIPAL UTILITY DISTRICT O 6201 S street. Bos 15830, Sacramento. California 95813; (916) 452 3211 i
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February 25, 1982 i W
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DIRECTOR OF NUCLEAR REACTOR REGULATION
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""*45 ATTN JOHN F STOLZ CHIEF OPERATING REACTORS BRANCH 4 US NUCLEAR REGULATORY COMMISSION t
WASHINGTON DC 20555 4
DOCKET 50-312 RANCHO SECO NUCLEAR GENERATING STATION UNIT N0 1 HIGH PRESSURE INJECTION N0ZZLE CYCLES As requested in your letter of February 8, 1982, the Sacramento Municipal Utility District is submitting a copy of the Rancho Seco operating procedures which show that injection flow to maintain pressurizer level following a reactor trip is through the makeup system (i.e.
from the makeup tank through the makeup nozzle).
Emergency procedure D.2, " Reactor / Turbine Trip", is enclosed with this letter for your review.
Procedure step 6.4 states that pressurizer level is maintained with letdown / makeup flow which could entail the use of an additional high pressure injection pump.
Step 6.5 shows that only when, and if, the makeup tank level falls to the low level alarm point is the borated water storage tar.k used to supply injection water, in which case one nozzle i
cycle would be used.
LLL l
ohn. Mattimoe Assistant General Manager and Chief Engineer Enclosure cc:
M. Padovan l
T. Baxter l
- 0. Holt (Jol
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