ML19350D165
| ML19350D165 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 04/06/1981 |
| From: | Stolz J Office of Nuclear Reactor Regulation |
| To: | Crouse R TOLEDO EDISON CO. |
| References | |
| NUDOCS 8104130621 | |
| Download: ML19350D165 (3) | |
Text
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gg NUCLEAR REGULATORY COMMISSION g gy. j E WASHINGTON, D. C. 20555 C,,e%r.L{a April 6,1981
% -ket tio. 50-346 fP. Richard P. Crouse Vice President, Nuclear Toledo Edison Company Edison Plaza 300 Madison Avenue Toledo, Ohio 43652 Cear Fr. Crouse:
We have reviewed your submittals of October 9, !!ovember 16, and Cicember 7,1979, and January 2,1981, with respect to adequacy of s a icn electric distribution voltages. We have identified the need f:r trore information in order for us to complete our review.
This i..ferration is identified in the enclosure. You are requested to p ovide a response to. these items within 45 days of receipt of this letter.
Sincerely, I.,
?I c u_L s o n F. Stolz, Chie Op rating Reactors Branch #4 Division of. Licensing E.cl osure:
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1 Toledo Edison Company ccw/ enclosure (s):
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Mr. Donald H. Hauser, Esq.
U.S. Nuclear Regulatory Coamission The Cleveland Electric Resident Inspector's Office Illuminating Company 5503 N. State Route 2 P. 0. Box 5000 Oak Harbor, Ohio 43449 Cleveland, Ohio 44101 Director, Criteria and Standards Gerald Charnoff, Esq.
Division Shaw, Pittman, Potts Office of Radiation Programs (ANR-460) and Trowbridge U. S. Environmental Protection Agency 1800 M Street, N.W.
Washington, D. C.
20460 Washington, D. C.
20036 Leslie Henry, Esq.
Fuller, Seney, Henry and Hodge U. S. Environmental Protection Agency 300 Madison Avenue Federal Activities Branch Toledo, Ohio 43604 Region V Office ATTN:
EIS C0ORDINATOR Mr. Robert B. Borsum 230 South Dearborn Street Eabcock & Wilcox Chicago, Illinois 60604 Nuclear Power Generation Division Suite 420, 7735 Old Georgetown Road Bethesda, Maryland 20014 Ida Rupp Public Library Ohio Department of Health 310 Madison Street ATTN:
Radiological Health Port Clinton, Ohio 43452 Program Director P.~0. Box 118 Fresident, Board of County Columbus, Ohio 43216 Commissioners of Ottawa County Fort Clinton, Ohio 43452
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Attorney General Cepartrient of Attorney General 33 East Broad Street Columbus, Ohio 43215 Harold Kahn, Staff Scientist F:w2r Siting Commission 351 East Broad Street Columbus, Ohio 43216 Mr. Rick Jagger Industrial Commission State of Ohio 2323 West 5th Avenue Columbus, Ohio 43216 Mr. Ted Myers Manacer, Nuclear Licensing T ledo Edison Ce pany Edison Plaza 330 Madison Avenue Toledo, Ohio 43652
Y REQUEST FOR ADDITIONAL INFORMATION ADEQUACY OF STATION-ELECTRIC' DISTRIBUTION SYSTEM V0LTAGES (P DAVIS-BESSE NUCLEAR POWER STATION UNIT 1 DOCKET NO. 50-346 Reference li NRC letter (W. Gammill) to all Power Reactor Licensees, dated August 8, 1979 Reference 2: Toledo Edison Company letter (Lowell E. Roe) to NRC (W. Gammill), dated October 9, 1979 Reference 3: Toledo Edi' son Company letter (R. P. Crouse) to NRC (W. Gannill), dated December 7,1979 Reference 4: Toledo Edison Company letter (R. P. Crouse) to NRC (R. N. Reid)', dated January 2,1981 F.eference 5: Toledo Edison Company letter (L. E. Roe) to NRC (R. N. Reid), dated November 16, 1979 1.
a)
Reference 2 and Reference 4 provided the results of calculations for 4160 volt buses and 480 volt buses.
Submit calculated voltages for all low voltage AC (less than 480 volts) Class lE buses.
This should include the voltage available for contactors or starters for Class lE equipment to
)
ensure their capability to pickup, operate and prevent dropout for all transient and steady state cases.
Document that all low voltage AC Class lE equipment will operate within the required voltage ratings for each case analyzed.
a) Do these buses supply any instruments or control circuits required by GDC-137 If so, is all equipment capable,of' sustaining the analyzed voltages without blowing fuses, overheating, etc., and without affecting the equipment's ability to perform the required function.
2.
0,eference 3 states that the final report of tests as required in Reference I will be completed by August 1,1980.
What is the status of the tests and e: ort?
I