ML20205Q364
| ML20205Q364 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 03/27/1987 |
| From: | Gucwa L GEORGIA POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| SL-2234, NUDOCS 8704030503 | |
| Download: ML20205Q364 (3) | |
Text
Georg a Power Company
'y 333 Piedmont Avenue Atlanta, Georgia 30308 Telephone 404 526 6526 Maihng Moress:
Post Office Box 4545 Atlanta. Georgia 30302 b
GeorgiaPower L T. Gucwa the soutnern eiwinc system Manager Nuclear Safety and Licensing SL-2234 0182m March 27,1987 U. S. Nuclear Regulatory Comission ATTN: Document Control Desk Washington, D.C.
20555 NRC DOCKET 50-424 OPERATING LICENSE NPF-68 V0GTLE ELECTRIC GENERATING PLANT UNIT 1 R0D WITHDRAWAL LIMITS Gentlemen:
Georgia Power Company hereby reports information regarding the Plant Vogtle Unit 1 moderator temperature coefficient pursuant to Technical Specification 3.1.1.3.
By copy of this letter, submittal is made to the Regional Administrator of Region II as directed by Technical Specification 6.8.2.
During the performance of the Low Power Physics Test Program, the all rods out, hot zero power (AR0, HZP) moderator temperature coefficient (MTC) was determined to be positive with a value of +0.89 pcm/0F at a critical boron concentration of 1340 ppm.
1 In accordance with VEGP Technical Specification 3.1.1.3, calculations l
have been performed to determine control rod withdrawal limits (RWL) and the duration of time for which these limits are to remain in effect. depicts these RWL.
j The RWLs are based on the boron concentration for which the MTC will be less than
-0.5 pcm/0F.
Calculations have shown that the RWL restriction must be imposed up to and including 30% of full power.
- Further, the RWL can be completely removed when the AR0,
This occurs at a burnup of 6000 MWD /MTU.
Please contact this office if you should have any questions.
Sincerely, 8704030503 870327 gr* A* s4 PDR ADOCK 05000424 j
P NR L. T. Gucwa EMB/1m h
Enclosure L _ _ -- - -
GeorgiaPower b U. S. Nuclear Regulatory Commission March 27,1987 Page Two c: Georgia Power Company Mr. R. E. Conway Mr. J. P. O'Reilly Mr. G. Bockhold, Jr.
Mr. J. F. D' Amico G0-NORMS Southern Company Services Mr. J. A. Bailey Shaw, Pittman, Potts & Trowbridge Mr. B. W. Churchill, Attorney-at-Law Troutman, Sanders, Lockerman & Ashmore i
Mr. J. E. Joiner, Attorney-at-Law U. S. Nuclear Regulatory Commission Dr. J. N. Grace, Regional Administrator Mr. H. H. Livermore, Senior Resident Inspector-Construction, Vogtle Ms. M. A. Miller, Licensing Project Manager, NRR (2 copies)
Mr. J. F. Rogge, Senior Resident Inspector-0perations, Vogtle Georgians Against Nuclear Energy Mr. D. Feig lis. C. Stangler
)
0182m 700775
CONTROL BANK WITHDRAWAL LIMITS FOR MAINTAINING A NEGATIVE MTC WITH CONTROL BANKS DaC IN OVERLAP 230 HZP IOS 201 301 40s 501 i
1 180
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REGION OF OPERATION 130.
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1100 1200 1300 1400 1500 RCS BORON CONCENTRATION (PPM)
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