ML20137K797
| ML20137K797 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 11/27/1985 |
| From: | Latham W SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | Thompson H Office of Nuclear Reactor Regulation |
| References | |
| GL-81-21, RJR-85-565, TAC-47170, NUDOCS 8512030285 | |
| Download: ML20137K797 (2) | |
Text
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SACRAMENTO MUNICIPAL UTILITY DISTRICT O 6201 S Street, P.O. Box 15830, Sacramento, CA 95813; (916) 452-3211 RJ2 85-565 AN ELECTRIC SYSTEM SERVING THE HEART OF CALIFORNIA November 27, 1985 DIRECTOR OF NUCLEAR REACTOR REGULATION ATTN HUGH L THOMPSON JR DIVISION OF LICENSING U S NUCLEAR REGULATORY COMMISSION WASHINGTON DC 20555 DOCKET 50-312 RANCHO SECO NUCLEAR GENERATING STATION UNIT NO. 1 GENERIC LETTER 81-21, NATURAL CIRCULATION C00LDOWN By letter dated September 19, 1985 (RJR 85-343, Mr. R. J. Rodriguez to Mr. H. L. Thompson), the District provided its response to Generic Letter 81-21.
The submittal included a topical report on the GPU Nuclear approach for natural circulation cooldown and Rancho Seco spec'.fic notes.
The attached addendum to the Rancho Seco notes on Topical Report 017 addresses two sections of the report which were inadvertantly omitted in the September 19, 1985 submittal.
If you have any questions, please contact Robert Little at (916) 73?-6G21.
&hbalb WILLIAM K. LATHAM ACTING GENERAL MANAGER Attachment gBh2988stSihajina P
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E ADDENDUM TO RANCHO SECO NOTES ON TOPICAL REPORT 017 d
5.0 OPERATIONAL GUIDELINES This section of Topical Report 017 is valid for Rancho Seco.
6.0 CONCLUSION
S This section of Topical Report 017 is valid for Rancho Seco with the exception that the Rancho Seco DHR cut in conditions are 250 psig and 280*F.
To prevent coolant flashing in the RV head during RCS cooldowns, the head will be required to be cooled for at least 24 and 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> respectively.