ML20211J437
| ML20211J437 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 10/03/1997 |
| From: | Hansen A NRC (Affiliation Not Assigned) |
| To: | Jeffery Wood CENTERIOR ENERGY |
| References | |
| TAC-M94621, NUDOCS 9710080123 | |
| Download: ML20211J437 (4) | |
Text
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HUCLEAR REQULATORY COMMLSSION g.....,/g i
W ASHINGTON, D.C. soseHoot October 3, 1997 Mr. John K. Wood Vice President - Nuclear, Davis-Besse Centerior Service Company c/o Toledo Edison Company Davis +0 esse Nuclear Power Station 5501 North State Route 2 Dak Harbor. OH 43449 9760
SUBJECT:
DAVIS BESSE NUCLEAR POWER STATION, UNIT NO. 1 - ADDITIONAL INFORMATION REGARDING ULTIMATE HEAT SINK / SERVICE WATER TEMPERATURE MEETING SCHEDULED FOR NOVEMBER 13, 1997 (TAC NO. M94621)
Dear Mr. Wood:
As discussed in our letter to you dated October 12, 1995, the NRC staff identified an apparent inconsistency between water temperature for the ultimate heat sink analysis and the service water system temperature used for containment response analysis following a loss-of-coolant accident.
You responded by letter dated January 31,1996.
By letter dated June 10, 1997, we requested that you meet with the NRC staff to discuss several issues which were identified as a result of the staff's revf w of your letter dated January 31, 1996. Additional concerns were f g arded to you by letter dated June 17, 1997.
The staff requests that you be prepared to provide details on the seismic analysis summarized in your January 31, 1996, letter.
In particular, the staff asks that, if possible, you present the following:
(1) A detailed map showing, at a minimum, the intake structure, canal,
)ipeline, embankments, and locations of all bore holes (wells, test 1 oles, drill holes, probe holes, etc.):
(2) Logs of all bore holes, including elevations, description of materials, standard penetration test blow counts, densities, moisture content and other index properties, shear wave velocities, material moduli, and elevation of water tah'E:
(3) Cross sections through area of interest showing embankments and depth of canal, geologic layers, and locations of bore holes: and (4) Soil liquefaction analysis and slope stability analysis.
Please include models and methods used, ground motion used and where input, h.
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assumptions about attenuation (including percentage of critical damping used for each layer), and amplification of ground motion.
Please have your staff contact me at 301-415-1390 to discuss details of how this material will be presented.
Sincerely.
Original signed by:
Allen G. Hansen. Proiect Manager ProjectDirectorate111-3 Division of Reactor Projects lil/IV Office of Nuclear Reactor Regulation Docket No. 50-346 cc:
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assumptions about attenuation (including percentage of critical damping used for each layer), and amplification of ground motion.
Please have your staff contact me at 301 415-1390 to discuss details of how this material will be presented.
Sincerely.
Original signed by:
Allen G. Hansen, Project Manager ProjectDirectorate!!!3 DivisionofReactorProjectsIll/IV Office of Nuclear Reactor Regulation Docket No. 50 346 cc: See next page
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John K. Wood Davis-Besse Nuclear Power Station a
Toledo Edison Company Unit No. I cc:
Mary E. O'Reilly Robert E. Owen, Chief Centerior Energy Corporation Bureau of Radiological Heahh 300 Madison Avenue Service Toledo, OH 43652 Ohio Department of Health P.O. Box 118 James L. Freels Columbus, OH 43266-0118 Manager - Regulatory Affairs Toledo Edison company James R. Williams Davis Besse Nuclear Power Station Chief of Staff 5501 North State - Route 2 Ohio Emergency Management Agency Oak Harbor, OH 43449-9760 2855 West Dublin Granville Road Columbus, OH 43235-2206 Gerald Charnoff, Esq.
Shaw, Pittman, Potts Donna Owens, Director and Trowbridge Ohio Department of Commerce.
2300 N Street, NW.
Division of Industrial Compliance Washington, DC 20037 Bureau of Operations & Maintenance 6606 Tussing Road P.O. Box 4009 Regional Administrator Reynoldsburg, OH 43068-9009 U.S. NRC, Region 111 801 Warrenville Road Ohio Environnental Protection Agency Lisle, IL 60523-4351 DERR--Compliance Unit ATTN: Zack A. Clayton Robert B. Borsum P.O. Box 1049 Babcock & Wilcox Columbus, OH 43266-0149 Nuclear Power Generation Division 1700 Rockville Pike, Suite 525 State of Ohio Rockville, MD 20852 Public Utilities Commission 180 East Broad Street Resident inspector Columbus', OH 43266-0573 U.S. Nuclear Regulatory Commission 5503 North State Route 2 Attorney General Oak Harbor, OH 43449 Department of Attorney 30 East Broad Street James H. Lash, Plant Manager Columbus, OH 43216 Toledo Edison Company Davis-Besse Nuclear Power Station President, Board of County 5501 North State Route 2 Commissioner of Ottawa County Oak Harbor, OH 43449-9760 Port Clinton, OH 43252 Roy P. Lessy, Jr.
Akin, Gump, Srauss, Hauer & Feld, LLP 1333 New Hampshire Ave., NW., Ste. 400 Washington, DC 20036 l