ML20137J671
| ML20137J671 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 01/08/1986 |
| From: | Stolz J Office of Nuclear Reactor Regulation |
| To: | Williams J TOLEDO EDISON CO. |
| Shared Package | |
| ML20137J676 | List: |
| References | |
| NUDOCS 8601230139 | |
| Download: ML20137J671 (2) | |
Text
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January 8,198G N@ C)h Docket No. 50-346 DISTRIBUTION
( Docket y JPartlow NRC 7DR RIngram L PDR ADe Agazio Mr. Joe Williams, Jr.
PBD-6 Rdg Gray File Vice President, Nuclear FMiraglia GDick Senior Toledo Edison Company OELD GEdison Edison Plaza - Stop 712 ACRS-10 WPaulson 300 Madison Avenue EJordan EBrach Toledo, Ohio 43652 BGrimes H0rnstein
Dear Mr. Williams:
SUBJECT:
EVALUATION OF ROOT CAUSE FINDING REPORTS FOR PLANS NO. 5, 6 AND 7 (SFRCS) AND 15A and ISB SOURCE RANGE NUCLEAR INSTRUMENTATION We have completed our review of Toledo Edison Company root cause findings and corrective actions reports for plans 5, 6 and 7 relating to the Steam and Feedwater Rupture Control System (SFRCS) and ISA and ISB relating to the Source Range Nuclear Instrumentation. The evaluations relating to our reviews of these plans are included as Enclosures 1 and 2 to this letter.
Based on our reviews of these plans we have concluded that there is reasonable assurance that Toledo Edison Company has identified the fundamental causes of the malfunctions experienced with these systems, and that Toledo Edison has taken appropriate corrective actions to prevent recurrence. Note that with regard to additional testing to be conducted on the effects of hydraulic and electronic noise on the steam generator level instruments, the staff will review the testing results and provide a final evaluation of your root cause determination. We have, however, concluded that the results of your analysis to date are valid and, therefore, this final determination is not required prior to a decision permitting restart of the unit.
Sincerely, WuL. nom 4
%.Famzy-John F. Stolz, Director PWR Project Directorate #6 Division of PWR Licensing-B
Enclosures:
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Mr. J. Williams Davis-Besse Nuclear Power Station Toledo Edison Company Unit No.1 cc:
Donald H. Hauser, Esq.
Ohio Department of Health The Cleveland Electric ATTN: Radiological Health Illuminating Company Program Director P. O. Box 5000 P. O. Box 118 Cleveland, Ohio 44101 Columbus, Ohio 43216 Mr. Robert F. Peters Attorney General Manager, Nuclear Licensing Department of Attorney Toledo Edison Company General Edison Plaza 30 East Broad Street 300 Madison Avenue Columbus, Ohio 43215 Toledo, Ohio 43652 Mr. James W. Harris, Director Gerald Charnoff, Esq.
Division of Power Generation Shaw, Pittman, Potts Ohio Department of Industrial Relations and Trowbridge 2323 West 5th Avenue 1800 M Street, N.W.
P. O. Box 825 Washington, D.C. 20036 Columbus, Ohio 43216 Mr. Paul M. Smart, President Mr. Harold Kohn, Staff Scientist The Toledo Edison Company Power Siting Ccmmission 300 Madison Avenue 361 East Broad Street Toledo, Ohio 43652 Columbus, Ohio 43216 Mr. Robert B. Borsum President, Board of Babcock & Wilcox Ottawa County Nuclear Power Generation Port Clinton, Ohio 43452 Division Suite 200, 7910 Woodmont Avenue Bethesda, Maryland 20814 Resident Inspector U.S. Nuclear Regulatory Commission 5503 N. State Route 2 Oak Harbor, Ohio 43449 Regional Administrator, Region III
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U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 1