ML19207B873
| ML19207B873 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 06/27/1979 |
| From: | Harold Denton Office of Nuclear Reactor Regulation |
| To: | Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| Shared Package | |
| ML19207B874 | List: |
| References | |
| TAC-56390, NUDOCS 7909050459 | |
| Download: ML19207B873 (32) | |
Text
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1 WASHINGTON, D. C. 20555
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June 27, 1979 Docket No. 50-312 Mr. J. J. Mattimoe Assistant General Manager and Chief Engineer Sacramento Municipal Ut11ty District-6201 S Street P. O. Box 15830 Sacramento, California 95813
Dear Mr. Mattimoe:
By Order of May 7,1979, the Commission confirmed your undertaking a series of actions, both immediate and long tem, to increase the capability and reliability of tne Rancho Seco Nuclear Generating Station to respond to various transient events.
In addition, the Order confirmed that you would shut down Rancho Seco on April 28, 1979, and maintain the plant in a shut-down condition until the folicwing actions had been satisfactorily ccmpleted:
(a) Upgrade the timeliness and reliability of delivery fre: the Auxiliary Feedwater System by carrying out actions as identified in Enclosure 1 of your letter of April 27, 1979.
(b) Develop and implement operating precedures for initiating and controlling auxiliary feedwater independent of Integrated Control.
System control.
(c)
Implement a hard-wired control-grade reactor trip that would be actuated on loss of main feedwater and/or turbine trip.
(d) Complete analyses for potential small breaks and develoc and implement operating instructions to define operator action.
(e) Provide for one Senior Licensed Operator assigned to the control rocm who has had Three Mile Island Unit No. 2 (TMI-2) training en the B&W simulator.
By submittal of May 14, 1979, as supplemented by seven letters dated May 22, 24,29,30(3) and June 6,1979, ycu have documented the actions taken in reranse to the May 7 Order. We have reviewed this submittal, and are satisfied the with respect to Rancho Seco, you have satisfactorily ccmpleted the actions 7909050 pfp o.-,
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Mr. J. J. Mattimce.
prescribed in items (a) through (e) of paragraph (1) of Section IV of the Order, the specified analyses are acceptable, and the specified implementing orecedures are appropriate. The bases for these conclusions are set forth in the enciesed Safety Evaluation.
As noted on page 13 of the Safety Evaluation, you will be required to conduct a test during power operation to demonstrate operator capability to assume manual control of the Auxiliary Feedwater System independent of the Inte-grated Control System.
Appropriate Technical Specifications for Limiting Conditions for Operation and for surveillance requirements should be developed as soon as practicable and provided to the staff within seven days with regard to the design and procedural changes which have been empleted in cmpliance with the provisions of the May 7,1979 Commission Order. The revised Technical Specifications should cover:
(1) Addition of flow indication to the Auxiliary Feedwater System; (2) Addition of the Anticipatory Reactor Trips; and (3) Changes in set points for high pressure reactor trip and PORV actuation.
Within 30 days of receipt of this letter, you should previde us with your schedule for completion of the long term mcdf fications described in Section II of the May 7 Order,and you should submit for staff review the medel used in the analysis for potentf al small breaks referenced in your letter of May 14, 1979.
My finding of satisfactory ccmp11ance with the requirements of items (a) through (e) of paragraph (1) of Section IV of the Order will permit resumption of operation in accordance with the terms of the Ccemission's Order; it in no way affects your duty to continue in effect all of the above provisions of the Order pending your submission and approval by the Commission of the Technical Specifi-cation changes necessary for each of the required mcdifications.
Sincerely, h_.
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Harold R. De on, Of rector Office of Nuclear Reactor Regulation Encl osures:
1.
Safety Evaluation 2.
Notice cc w/encicsures: See next page 3.dW
Sacramento Municipal Utility 0
S eet N District Washington, D. C.
20036 Dr. Richard F. Cole cc w/ enclosure (s):
Atomic Safety and Licensing Board Parel U. S. Nuclear Regulatory Ccamission David S. Kaplan, Secretary and General Counsel Washington, D. C.
20555 Mr. Frederick J. Shon P
' Bo 830 Sacramento, California 95813 Atomic Safety and Licensing Board Panel U. S. Nuclear Regulatory Comission Sacramento County Washington, D. C. 20555 Board of Supervisors 827 7th Street, Rocm 424 Timothy V. A. Dillon, Esq.
e3 Sacramento, California 95814 Washington, D. C.
20006 California Energy Comission Mr. Mark Vandervelden Ho Ave Ms.
e s Sacramento, California 95825 p
ristopherson Friends of the Earth Business and Municipal Department Sacramento City-County Library California Legislative OfH ca 828 I Street 717 K Street. #208 Sacramento, California 95814 Sacramento, California 95814 Director, Technical Assessment Atomic Safety and: Licensing Board Panel Division U. S. Nuclear Regulatory Comission Office of Radiation Programs Washington, D. C.
20555 U.
Env ronmental Protection Agency Atomic Safety and Licensing Appeal 8
Crystal Mall #2 g, {#Nu e r Regulatory Ccmission Arlington, Virginia 20460 Washington, D. C.
20555 U. S. Environmental Protection-Agency Mr. Robert B. Borsun Region IX Of fice Babcock & Wilcox ATTH: EIS COCRDINATCR 215 Fremont Street Nuclear Power Generation Division Suite 420, 7735 Old Georgetown Road San Francisco, California 94111 Bethesda, Maryland 20014 Mr. Frank Hahn
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California Energy Comission Mr. Richard D. Castro 1111 Howe Avenue Mr. Gary Hursh Sacramento Municipal Utility Sacramento, California 95825 District Ms. Eleanor Schwart:
5201 S Street California State Office P. G. Bcx 15820
- ___95817 Sacramento, California 600 Pennsylvania Avenue, S. E., Rocm 201 Washington, D. C.
20003 cc w/ enclosure (s) and incoming (3) 15/5/79 dtd.: 5/14, 5/22, 24, 29, 30 Cocketing and Service Section Office of the Secretary California Department of Health U. S. Nuclear Regulatory Comission ATTN: Chief, Environmentah -
Washington, D. C.
20555 Radiation Control Unit Radiological Health Section 714 P Street, Room 498
. Sacramento, California 94814 1k: