ML19259C769
| ML19259C769 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 06/27/1979 |
| From: | Harold Denton Office of Nuclear Reactor Regulation |
| To: | Roe L TOLEDO EDISON CO. |
| Shared Package | |
| ML19259C767 | List: |
| References | |
| TAC-11649, NUDOCS 7908150146 | |
| Download: ML19259C769 (4) | |
Text
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UNITED STATES 8 h,c j
NUCLEAR REGULATORY COMMISSION
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WASMNGTON, D. C. 20555
- %,' ~_s 4 y' Occket No.: 50-346 Mr. Lcwell E. Roe
' lice President, Facilities Cevelopment Toledo Edison Ccmpany Edison Plaza 300 Madison Avenue Toledo, Ohio 42652
Dear Mr. Roe:
By Order of May 16, 1979, the Canaission ccnfirmed jour undertaking a series of actions, both immediate and long-term, to increase tne capability and reliability of the Davis-Besse Nuclear Power Station, Unit No. I to respond to various transient events.
!n addition, the Order confirmed that you would maintain the olant in a shutdown conditicn until tne following actions had been satisfactorily coroleted:
(a) Review all aspects of the safety grade auxiliary feecwater system to further upgrade ccmponents for added reliability and performance.
Present modifications will include the addition of dynamic braking on the auxiliary feecoump turbine speed changer and provision of means for control rocm ~erification of the auxiliary feedwater flow to the steam generators. This means of verification will be provided for one steam generator prior to startup frem the present maintenance outage and for the other steam generator as : con 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 cacaci ty.
(b)
Revise acerating procedures as necessary tc eliminate the option of using the Integrated Centrol S/ stem as a backup.T>eans for ccntrolling auxiliary feedwater ficw.
(c)
Implement a nard-wired centrol-grade reactor trip that would be actuated on loss of main feedwater and/or turcine trip.
(d) Ccmplete analyses for pctenti ll small breaks and develop and implement operating instruc; ions to define :peratcr act4cr..
(e) All licensed reac ce :cerators 1.'d sanf or reactor c _ oritors will have ccmpleted the 7hree Mile Island Unit :fo. 2 simulatcr aining at 3&'4.
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- Mr. Lowell E. Roe (f) Submit a reevaluation of the TECO analysis of the need for autcmatic or administrative control of steam generator level setpoints during auxiliary feedwater system operation, previously submitted by TECO letter of Decerter 22, 1978, in light of the Three Mile Island Unit No. 2 incident.
(g) Submit a review of the previous TECO evaluaticn of the September 24, 1977 event involving equipmerit 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 succlemented by sixteen letters dated May 11, 18, 19, 22(2), 23(2), 25(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. We have reviewed this submittal, and are satisfied that, with respect to Davis-8 esse, Unit 1, you have satisfactorily completed the actions prescribed in items (a) through (g) of paragraph (1) of Section IV of the Order, t - specified 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 recuirements should be developed as scen as practicable and provided to the staff within seven days with regard to the design and procedural changes which have been completed in comoliance with the provisions of the May 16, 1979 Commission Order. The revised Technical Specifications should cover:
(1) Addition of flow rate indication for ne auxiliary feedwater system; (2) Addition of the anticipatory reactor trips; and (3) Changes in set points for nign pressure reactor trip and PCRV actuation.
Witnin 30 days of receiot of this letter, you should provice us witn your schedule for ccmoletion of One long-term modifications described in Secticn II of the May 16 Crder.
My finding)of satisfactory comoliance witn tne requirements of items (a) tnrougn (g of paragraph (1) of Section IV cf the Order will permit resumption of coeration in accordanca with the ter ns of the Comission's Order; it in
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Mr. Lowell E. Roe no way affects ycur duty to continue in effect all of the above provisions of the Order pending your submissien and approval by the Ccmmission of the Tecnnical Specification changes necessary for each of the required modi fications.
Sincerely, Hamid R. Denten, Director Office of Nuclear Reactor Regulation
Enclosures:
1.
Safety Evaluatien 2.
Notice cc w/encis:
See next page
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Toledo Ecison Company cc w/ enclosure (s):
Mr. Donald H. Hauser, Esq.
Direc ce, Technical Assessment The Cleveland Electric Division Illuminating Company Office of Radiation Programs P. O. Box 50C0 (AW-459)
Cleveland, Chio 44101 U. S. Environmental Protection Agency Crystal Mall 42 Gerald Charnoff, Esq.
Arlingtcn, Virginia 20460 Shaw, Pittman, :ott.
and Troweridge U. S.
nvironmen:al Protection Agency 1800 M Street, N.W.
Federal Activuies 3 ranch Wasnington, D.C.
20026 Region 7 Office ANN:
EIS CCORDINATOR Leslie Henry, Esc.
230 South :earborn Street Fuller, Seney, Henry and Hedge Chicago, Illinois SC604 300 Madison Avenue Toledo, Chio 426Ca Mr. Samuel J. Chilk, Secretary U. S. Nuclear Regulatory Comission Mr. Robert 3. Borsum Washington, D.C.
20555 Sabccck & Wilcox Nuclear Pcwer Genera:icn Division The Honorable Tim McCormack Suite 420, 7735 Cid Georgetown Road Ohio Senate Bethesda, Maryland 20014 Statehouse Ida Rupp Puolic Library 310 Madison Street The Honorable Tim McCormack Port Clinten,Chio 43452 170 E. 209th Street Euclid, Ohio 44123 President, 2 card of Ccunty Ccmmissicners of Ottawa Ccunty Port Clin:cn, Chio 43452 f.
wey a Roe lice President, racilities U N ICcment A :ceney General
,. leda tdison Company io Cecartwn of A::ceney General disen Plaza 30 East 3rcad 5:reet E
Coluccus, Chio 42215 200 Madison Avenue Toledo, Chio 43652 Harold Xann, Staf# Scientist Pcwer Siting Ccmmissicn Bruce Churchill, Esq.
361 Eas: 3 road Stre:
Shaw, Pittman, Pctts & Troweridge "cl um::us, Chio 43215 ISCO M Street, N.W.
Washington, D.C.
20036 Unlo Department of Health AT~N:
Director of Health Atomic Safety 1 Licensing Scard Panel 450 East Tcwn Street U. S. Nuclear Regulatory Ccmission Cclumcus, Ohio 43215 Washington, D.C.
20555 Cocketing and Service Section Atomic Safety and Licensing Acceal Panel Office or the Secretary U. S. Nuclear Regulatory Comission U. S. Nuclear Regulatory Comission Washington, D.C.
20555 Washington, D.C.
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