ML20212C919

Forwards Sser Re Util 850923 & 1217 Reanalyses of 74 Masonry Walls.Walls Can Be Qualified If Conservatisms Eliminated from Analyses.Ie Bulletin 80-11,Items 2(b) & 3 Fully Implemented

ML20212C919
Person / Time
Site:	Davis Besse
Issue date:	08/04/1986
From:	Stolz J Office of Nuclear Reactor Regulation
To:	Williams J TOLEDO EDISON CO.
Shared Package
ML20210C170	List: ML20210C166 ML20212C919 ML20212C923
References
IEB-80-11, TAC-59874, NUDOCS 8608120207
Download: ML20212C919 (2)

Text

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- August 4,1986 4 .

Docket'No.-50-346 Mr. Joe Williams, Jr.

Senior Vice President, Nuclear Toledo Edison Company Edison Plaza - Stop 712-300 Madison Avenue Toledo, Ohio 43652

SUBJECT:

MASONRY WALL DESIGN The staff has completed its evaluation of Toledo Edison Company's submittals dated September 23, 1985 (No. 1183) and December 17, 1985 (No. 1219) which present a re-analyses of 74 masonry walls which had originally been qualified using the energy balance technique. Your re-analyses of these walls demonstrate that upor removal of certain excessive conservatisms from the original analyses, the 74 walls can be qualified using the working stress methodology.

Based on its evaluation of your submittals, the staff concurs that the 74 walls can be qualified using a methodology acceptable to the staff if excessive conservatisms are eliminated from the analyses. Therefore, the staff concludes that the issues associated with application of the energy balance technique at the Davis-Besse Nuclear Power Station are satisfactorily resolved and Items 2(b) and 3 of IE Bulletin 80-11 are considered fully implemented.

The staff was assisted in its evaluation by Franklin Research Center. The Franklin Research Center Technical Evaluation Report and the staff's Safety Evaluation Report are Enclosed.

Sincerely, Wacna ng, JC%A:g, gyg.

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. I cc: .

Donald H. Hauser, Esq. Ohio Department of Heal.th 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. (AddresseeOnly)

Shaw, Pittman, Potts Division of Power Generation and Trowbridge Ohio Department of Industrial Relations 1800 M Street, N.W. 2323 West 5th Avenue Washington, D.C. 20036 P. O. Box 825 Columbus, Ohio 43216 Mr. Paul M. Smart, President Mr. Harold Kohn, Staff Scientist Toledo Edison Company Power Siting Comission 300 Madison Avenue 361 East Broad Street Toledo, Ohio 43652 Columbus, Ohio 43216 Mr. Robert B. Borsum President, Board of Babcock & Wilcox County Comissioners of Nuclear Power Generation Ottawa County Division Port Clinton, Ohio 43452 Suite 200, 7910 Woodmont Avenue Bethesda, Maryland 20814 Resident Inspector l

U.S. Nuclear Regulatory Comission 5503 N. State Route 2 Oak Harbor, Ohio 43449 Regional Administrator, Region III .

U.S. Nuclear Regulatory Comission 799 Roosevelt Road Glen Ellyn, Illinois 60137 l

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