ML19207A736
| ML19207A736 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 07/06/1979 |
| From: | Harold Denton Office of Nuclear Reactor Regulation |
| To: | Roe L TOLEDO EDISON CO. |
| Shared Package | |
| ML19207A737 | List: |
| References | |
| TAC-43516, NUDOCS 7908220228 | |
| Download: ML19207A736 (4) | |
Text
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UNITED STATEE
! 'O NUCLEAR REGULATORY CCT"*.11SS:Gi-
$.1'._7. k'l 'e1E WASHINGTON. D. C. 20555 c.,',4Ui[//
July 6,1979 p...
Docket No.:
50-346
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. Jg j Mr. Lowell L. Roe Vice President, Facilities Development Toledo Edison Company Edison Plaza 300 Madison Avenue Toledo, Ohio 43652
Dear Mr. Roe:
By Order of May 16, 1979, the Commissico confirmed your undertaking a series of actions, both immediate and long-term, to increase the capability ard reliability of the Davis-Besse Nuclear Power Station, Unit No. I to respond to various transient events.
In addition, the Orde' con firmed that you would maintain the plant in a shutdown condition until the following actions had been satisfactorily completed:
(a) Review all aspects of the safety grade auxiliary feedwater system to further upgrade components for added reliability and performance.
Present modifications will include the addition of dynamic braking on the auxiliary feedpump turbine speed changer and provision of means for control room verification of the auxiliary feedwater flow to the steam generators. This means of verification will be provided for one steam generator prior to startup from the present maintenance outage and for the other steam generator as soon as vendor-supplied equipment is available (estimated date is June 1,1979).
In addition, the licensees will review and verify the adequacy of the auxiliary feedwater system capacity.
(b) Revise operating procedures as necessary to eliminate the option of using the Integrated Control System as a backup means f or controlling auxiliary feedwater flow.
(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 develop and implement operating instructions to define operator action.
(e) All licensed reactor ope.ators and senior reactor operators will have completed the Three Mile Island Unit No. 2 simulator training at B&W.
854 001 7 908 2 20 Z'24
Mr. Lowell E. Roe (f) SL5mit a reevaluation of the TECO analysis of the need for automatic or administrative control of steam generator level setpoints during auxiliary feedwater system operation, previously submitted by TEC0 letter of December 22, 1978, in light of the Three Mile Island Unit No. 2 incident.
(g)
Submit a review of the previous TECO evaluation of the September 24, 1977 event involving equipment problems and depressurization of the primary system at Davis-Besse 1 in light of the Three Mile Island Unit No. 2 incident.
By your letters dated April 27 and May 4,1979 and s.upplemented by sixteen letters dated May 11, 18, 19, 22(2), 23(2), 26(2), 29 and June 15(2),18, 21, 23 and 25,1979, you have documented the actions taken in response to the May 16 Order. He have reviewed this submittal, and are satisfied that, with respect to Davis-Besse, Unit i, you have satisfactorily completed the actions prescribed in items (a) through (g) of paragraph (1) of Section IV of the Order, the specifiad analyses are acceptable, and the specified implementing procedures are appropriate. The bases for these conclusions are set forth in the enclosed Safety Evaluation.
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 completed in compliance with the provisions of the May 16, 1979 Commission Order. The revised Technical Specifications should cover:
(1) Addition of flow rate indication for the auxiliary feedwater system; (2) Addition of tne 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 provide us with your schedule for completion of the long-term modifications described in Section II of the May 16 Order.
My finding of satisfactory compliance with the requirements of items (a) through (g) of paragraph (1) of Section IV of the Order will permit resumption of operation in accordance with the terms of the Commission's Order; it in 854 002
Mr. Lowell E. Roe 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 Specification changes necessary for each of the required modifications.
Sincerel,
a Harold R. Denton, Director Office of fluclear Reactor Regulation
Enclosures:
1.
Safety Evaluation 2.
flotice cc w/encls:
See next page 854 003
Toledo Edison Company cc w/enclos: e(s):
Mr. Donald H. Hauser, Esq.
Director, Technical Assessment The Cleveland Electric Division Illurinating Company Office of Radiation Programs P. O. Box 5000 (AW-459)
Cleveland, Ohio 44101 U. S. Environmental Protection Agency Crystal Mall #2 Gerald Charnoff, Esq.
Arlington, Virginia 20460 Shaw, Pittman, Potts and Trowbridge U. S. Environmental Protection Agency 1800 M Street, N.W.
Federal Activities Branch Washington, D.C.
- 20036 Region V Office ATTN:
EIS COORDINATOR ceslie Henry, Esq.
230 South Dearborn Street Fuller, Seney, Henry and Hodge Chicago, Illinois 60604 300 Madison Avenue Toledo, Ohio 43604 cc w/ enclosure (s) and incoming dtd.:
Mr. Robert B. Borsum Babcock & Wilcox Ohio Department of Health Nuclear Power Generation Division ATTN: Director of Health Suite 420, 7735 Old Georgetown Road 450 East awn Street Bethesda, Maryland 20014 Columbus, Ohio 43216 Ida Rupp Put 41c Library 310 Madison Street Port Clinton,0hio 43452 President, Board of County Commissioners of Ottawa County Port Clinton, Ohio 43452 Attorne/ General Department of Attorney General 30 East Broad Street Columbus, Ohio 43215 Harold Kahn, Staff Scientist Power Siting Commission 361 East Broad Street Columbus, Ohio 43216 854 00^