ML20203N382
| ML20203N382 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 10/01/1986 |
| From: | Rivenbark G Office of Nuclear Reactor Regulation |
| To: | Beckham J GEORGIA POWER CO. |
| References | |
| NUDOCS 8610080175 | |
| Download: ML20203N382 (3) | |
Text
%
October 1, 1986 Dockets Nos. 50-321/366 Mr. J. T. Beckham, Jr.
Vice President, Nuclear Generation Georgia Power Company P. O. Box 4545 Atlanta, Georgia 30302
Dear Mr. Beckham:
In order to facilitate our review of George Power Company's resolution of seismic analysis discrepancies for Hatch Units 1 and 2, we need the additional information described in the enclosure.
You are requested to provide a written response, submitting the requested information, within 30 days of receipt of this letter.
The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P.L.
i 96-511.
Sincerely,
.OridniQ(d by George Rivenbark, Project Manager BWR Project Directorate #2 Division of BWR Licensing
Enclosure:
Request for Add'itional Information cc: See next page DISTRIBUTION C Docket File:
NRC PDR Local PDR PD#2 Plant File GRivenbark OGC - Bethesda EJordan-BGrimes JPartlow NThompson SNorris ACRS (10) b[
0FFICIAL RECORD COPY
- #2 j
S GRiverhark:cb I 8/\\/86
\\9/l/86
}Q///86 8610000175 861001 DR ADOCK 0500 1
m s
Mr. J. T. Beckham, Jr.
Edwin I. Hatch Nuclear Plant,
- Georgia Power Company Units Nos. I and 2 cc:
Bruce W. Chruchill, Esquire Shaw, Pittman, Potts & Trowbridge 2300 N Street, N.W.
Washington, D.C.
20037 Mr. L. T. Gucwa Engineering Department Gecrgia Power Company Post Office Box 4545 Atlanta, Georgia 30302 Mr. H. C. Nix, Jr., General Manager Edwin I. Hatch Nuclear Plant Georgia Power Company Post Office Box 442 Baxley, Georgia 31513 Mr. Acuis B. Long Southern Company Services, Inc.
Post Office Box 2625 Birmingham, Alabama 35202 Resident Inspector U.S. Nuclear Regulatory Comission Route 1 Post Office Box 279 Baxley, Georgia 31513 Regional Administrator, Region II U.S. Nuclear Regulatory Comission, 101 Marietta Street, Suite 2900 Atlanta, Georgia 30303 Mr. Charles H. Badger Office of Planning and Budget Room 610 270 Washington Street, S.W.
Atlanta, Georgia 30334 Mr. J. Leonard Ledbetter, Comissioner Department of Natural Resources 270 Washington Street, N.W.
Atlanta, Georgia' 30334 Chainnan Appling County Comissioners County Courthouse Baxley, Georgia 31513
4 REQUEST FOR ADDITIONAL INFORMATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATING TO LICENSEE'S RESOLUTION OF DISCREPANCIES IN SEISMIC ANALYSIS AT HATCH UNITS 1 and 2 GEORGIA POWER COMPANY lhe following information should be provided:
1.
Soil profile at the site including dynamic soil properties.(shear modulus, density, Poisson's ratio). Variation of soil properties (shear modulus and material damping) with shear strain. Low strain values and those used in the dynamic analyses of the buildings.
2.
Foundation elevations and thicknesses for all buildings.
3.
Description of approach to obtaining soil damping values (radiation plus material).
- 4. -Mode-by-mode / bldg by b1dg equivalent modal damping values (radiation plus
~
material).
5.
Selected comparison of Unit 1/2 response spectra at common points.
6.
Dynamic models of selected structures (a) diesel generator building
~
(b) perhaps others will be requested at a later date depending on responses to 1-5.
Comparison of methods of seismic analysis between equivalent buildings in 7.
Unit 1 and Unit 2.
1
-