ML19262C257
| ML19262C257 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 01/28/1980 |
| From: | Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | Reid R Office of Nuclear Reactor Regulation |
| References | |
| TAC-49501, NUDOCS 8002080487 | |
| Download: ML19262C257 (1) | |
Text
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OSMUD
~~ ' SACRAMENTO MUNICIPAL UTILITY DISTRICT C 6201 s Street, Box 15830, sacramento, Cahfornia 95813, (916) 452-3211 January 28, 1980 Director, Nuclear Reactor Regulation Attention: Robert W. Reid, Chief Operating Reactors, Branch No. 4 U. S. Nuclear Regulatory Commission Nashington, D. C.
20555 Docket No. 50-312 Rancho Seco Nuclear Generating Station, Unit No. 1
Dear Mr. Reid:
Your letter of March 19, 1979 requested additional information on our proposed modification for storing the reactor cavity annular seal plate during reactor operation. We indicated in letters dated April 26, and July 31, 1979 that we would have this information available in time for you to determine the acceptability of this modification prior to the end of our present refueling outage at which time we would first use this structure.
Since the Three Mile Island accident the District's efforts and those of Gilbert Associates, who are designing this modification, have been redirected to areas of more inminent concern.
f.* this time neither the design nor the fabrication of the structure is complete. At the end of the present fuel cycle we intend to remove the seal plate and store it in a location where it can not be exposed to s pressure differential from pressures generated within the reactor cavity following a LOCA. The structure for storing the seal plate during reactor operation will be completed af ter we resume operation and we will provide the design details requested at that time.
'le do not feel storing the seal plate temporarily in another location within the containment presents any safety question.
It is simply for convenience that we desire to provide a permanent structure for storing the seal plate above its sealing position.
Sincerely yours, 1944 338
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-Gohn J. Mattimoe Assistant General Manager g
and Chief Engineer g\\
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