ML19329D964

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Responds to NRC 790319 Addl Info Request Re Design Analysis & Fabrication Techniques for Proposed Annular Seal Plate Storage Mod.Cost Sharing Negotiations Interrupted by TMI Accident & Response Cannot Be Provided Prior to 790731
ML19329D964
Person / Time
Site: Rancho Seco, Crane
Issue date: 04/06/1979
From: Walbridge W
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To: Reid R
Office of Nuclear Reactor Regulation
References
NUDOCS 8004080980
Download: ML19329D964 (1)


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SACRAMENTO MUNICIPAL UTILITY DISTRICT C 6201 s street, Box 15830, sacramento, Cahfernia SMU2 95813; (916) 452-3211 April 26,1979 Director of Nuclear Reactor Regulation Attention: Mr. Robert W. Reid Chief, Operating Reactors, Branch #4 U. S. Nuclear Regulatory Commission Washington, D. C.

20555 Docket No.50-312 Rancho Seco Nuclear Generating Station, Unit No. 1

Dear Mr. Reid:

Your letter of March 19, 1979, requests additional information regarding the design, design analysis, and fabrication techniques for our proposed modification for storing the reactor cavity annular seal plate during reactor operation. At this time our design of this modification has not progressed to the point which would enable us to provide the details requested.

The District was negotiating a cost sharing arrangement with the Metropolitan Edison Company for a Gilbert Associates design for the seal plate support at the time of the Three Mile Island incident.

This incident has interrupted these negotiations and the District does not possess a detailed design at this time.

In addition, a stress analysis of the reactor service structure must be perfonned by the Babcock and Wilcox Company before this design can be considered final. The District estimates an additional 90 days will 3e required to provide you with the information requested. We, therefore, propose to provide a response to your letter by July 31, 1979. We will assume this response time is satisfactory unless we hear from you to the contrary.

Sincerely yours',

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General Manager 8004080 NO Y.<, I gg

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