ML19294B397
| ML19294B397 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 11/05/1979 |
| From: | Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| IEB-79-23, NUDOCS 8002280289 | |
| Download: ML19294B397 (1) | |
Text
7/C SMUD SACRAMENTO MUNICIPAL UTILITY DISTRICT O 6201 S Street, Box 15830, Sacramento, California 95813, (916) 452-3211 November 5, 1979 Mr. R. H.
Engelken, Director Region V Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission 1990 North California Boulevard Walnut Creek Plaza, Suite 202
= gg Walnut Creek, California 94596
.A Docket No. 50-312 1
,N Rancho Seco Nuclear Generating R
y Station, Unit No. 1
' l' J
~
Bulletin 79-23 Reply i
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Dear Mr. Engelken:
' <dP In response to IE Bulletin No. 79-23, the Sacramento Municipal Utility District has taken the following action:
1.
A determination was made that there are no connections between the neutrals of low kva rated transformers and high kva rated EDGs.
2.
A sustained full-load operation test has been made on each emergency dipsel generator for a duration of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
The continuous rating load was maintained for 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> and the 2-hour o v e r load wa.; maintained for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />. Diesel Generator A was tested under Spe.ial Test Procedure No. 832 on October 22-23, 1979. Diesel Generator B was tested under Special Test Procedure No. 831 on October 17-18, 1979.
The test verified that voltage and frequency requirements were maintained and the cooling system functioned within design limits.
Respectfully,
/J. J. Mattimoe Assistant General Managt r and Chief Engineer JJM: RJR : RWC : j r s002280 1 %
AN [tTCTRIC SYSTEM SERV!Nu MORE THAN 600,000 IN THE HEART OF C Ali F O R N A e
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