ML20237E872

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Forwards Proprietary Addl Info on Plant Spds,Including SPDS Block Diagram,List of Documents to Be Docketed & Clarification of Seismic Qualification of SPDS Components. Info Withheld
ML20237E872
Person / Time
Site: Rancho Seco
Issue date: 12/12/1987
From: Coward G
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To: Miraglia F
Office of Nuclear Reactor Regulation
Shared Package
ML19302D219 List:
References
AGM-TA-87-266, NUDOCS 8712290238
Download: ML20237E872 (2)


Text

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s4 esuun hf SACRAMENTO MUNICIPAL UTILITY DISTRICT D P. O. Box 15830, Sacramento CA 95852-1830, (916) 452-3211 Cdb AN ELECTRIC SYSTEM SERVING THE HEART OF CALIFORNIA

, ' DEC 1 2 1987 l AGM/TA 87-266 j i

U. S. Nuclear Regulatory Commission 1 Attn: Frank J. Miraglia, Jr. l Associate Director for Projects  !

Phillips Building 7920 Norfolk Avenue Bethesda, MD 20014 DOCKET NO. 50-312 RANCHO SECO NUCLEAR GENERATING STATION LICENSE NO. DPR-54 SAFETY PARAMETER DISPLAY SYSTEM (SPDS) SUPPLEMENTAL INFORMATION i

Dear Mr. Miraglia:

As a result of discussions with your staff, additional information was requested to provide sufficient detail on the SPDS. Pursuant to this request, Attachment 1 provides a copy of the SPDS block diagram. In addition, the staff is requested to docket the documents listed in Attachment 2. These were provided to the staff during the October 26-28, 1987 audit.

A telephone call with your staff on December 3,1987 indicated that clarification of the seismic qualification of the SPDS was necessary to complete your review. Attachment 3 provides additional information on the seismic qualification of the SPDS components. It is our understanding that this information is sufficient to provide the clarification requested by your

staff.

In our letter dated November 20, 1987, the District indicated it would provide the first quarterly performance report 3 months after full power operation.

It is our understanding that the staff would rather have the first report 3 months after reactor criticality. Accordingly, the District will submit the first quarterly SPDS performance report consistent with the requested schedule.

N)k DO K 2 k'o\4 l

RANCHO SECO NUCLEAR GENERATING STATION O 1444o Twin Cities Road, Herald, CA 95638-9799;(209) 333-2935

DEC 1 2 .1987-AGM/TA 87-266 I l-F..J. Miraglia- l h

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Please contact me 'if you have any questions. Members of.your staff'with questions requiring additional information or clarification may contact

- Mr. John Atwell at (916).452-3211, extension 4917.

Sincere'ly,

/.

. George A. Coward l -. Assistant General Manager,' Nuclear Technical and Administrative Services Attachment cc:- G. Kalman, NRC, Bethesda (w/atch)

A. D'Angelo, NRC, Rancho Seco ( "' )

J.B. Martin, NRC, Region V- ( " ).

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