ML19209B602
| ML19209B602 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 10/05/1979 |
| From: | Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19209B603 | List: |
| References | |
| NUDOCS 7910100210 | |
| Download: ML19209B602 (2) | |
Text
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C seus SACRAMENTO MUNICIPAL UTILITY DISTRICT O 6201 s street, Box 15830 sacramento, California 95813; (916) 452-3211 October 5,1979 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Comission Washington, D.C.
20555 Docket No. 50-312 Rancho Seco Nuclear Generating Station Unit No. 1
Dear Mr. Denton:
This letter and the attached report is in response to your Septenter 17, 1979, letter on " Potential Unreviewed Safety Questions on Interaction Between Non-Safety Grade Systems and Safety Grade Systems".
Within the time frame allowed by your letter, our efforts have been focused on developing and understanding the issue and making a preliminary assessment of the impact of this issue on the conclusions of the safety analyses presented in the FSAR. We have identified several areas which could not be addressed within the allotted time and which should be investigated further.
We believe there is a logical relationship between these longer t3 rm actions and the actions already planned for in connection with NUREG-0578.
The attached report which was prepared in conjunction with the Babcock and Wilcox Company, provides the details of our review and identifies the further actions we intend to undertake to address the long term system response under adverse environmental conditions. We believe that this report and the probabilistic analysis currently being completed by NSAC, provides adequate justification for the continued operation of Rancho Seco Unit I without modification of our license. We still feelthat the events analyzed in our FSAR do not constitute an undue risk to the health and safety of the public.
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Mr. Harold R. Denton October 5,1979 If you have any questions, please feel free to contact us.
Respectfully submitted.
SACRAMENTO MUNICIPAL UTILITY DISTRICT k ' fh&b John. Mattimoe Assistant General Manager and Chief Engineer i
i JrbL D VI'd S. KAPF
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General Couns for Sacramento Mu icipal Utility District Subscribed and sworn to before me this 5th day of October,1979
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