ML19269D030
| ML19269D030 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 01/24/1979 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| References | |
| NUDOCS 7902260602 | |
| Download: ML19269D030 (3) | |
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION j,'4Q3...( j WASHING TON, 0. C. 20555
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,e i ' *9.( f January 24, 1979 Docket f:o.:
50-312 Mr. J. J. Mattimoe Assistant General Manager and Chief Engineer Sacramento Municipal Utility District 6201 S Street P. O. Box 15830 Sacramento, California 95813
Dear Mr. Mattimoe:
By letter dated January 2,1979, you submitted infor ation on proposed Class II Instrumentation modifications as required by Paragraph 2.C.(4) of Facility Operating License
- o. OPR-54 for the Rancho Seco Nuclear Generating Station. The information submitted, however, is insufficient to permit us to determine the acceptability of the proposed modifications.
Therefore, in order for us to perform our review and arrive at a determination, you are requested to provide the following commitments and additional information within 45 days of receipt of this letter:
1.
With regard to Class II instrumentation required for safe shutdown, indicate your commitment to the following positions:
The cabling and equipment for the two alternative a.
instrumentation paths will be located in separate fire areas where possible; b.
Where the cabling or equipment must be in the sar.e fire area, maximum separation will be provided; and Where the redundant cabling or equipment must be in c.
proximity to each other, appropriate barriers and/or fire protection will be provided to preclude a fire from affecting both instrumentation paths.
790226OG,OR
Sacramento Municipal Utility District,
2.
Provide details of the proposed modifications to include:
a.
Drawings showing equipment location and cable routing for the two instrumentation paths; and b.
Description and/or sketches of protection provided where redundant cables or equipment are in proximity to each other.
Sincerely, e
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', [ h j[' {l. [ l l.'s' Robert W. Reid, Chief Operating Reactors Branch =4 Division of Operating Reactors cc:
See next page
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Sacranento Municipal Utility District cc: David S. Kaplan, Secretary and General Counsel G201 S Street Post Of fice Sox 15830 Sacramento, California 95813 Mr, P.obert B. Borsum Babcock & Wilcox t;uclear Power Generation Division Suite 420, 7735 Old Georgetown Road Bethesda, Maryland 20014 Business and Municipal Department Sacramento City-County Library 828 I Street Sacramento, California 95814