ML20196A116

Monthly Operating Rept for May 1999 for Grand Gulf Nuclear Station.With

ML20196A116
Person / Time
Site:	Grand Gulf
Issue date:	05/31/1999
From:	Gunn C, Lin S, Venable J ENTERGY OPERATIONS, INC.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GNRO-99-00047, GNRO-99-47, NUDOCS 9906220128
Download: ML20196A116 (6)

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• Entsrgy Operations. inc.

,. P. O Box 756 Port Git; son MS 39150 Tel 601437 2129 Joseph E. Venable June 15, 1999 c72$$$$$0$$7*"

U.S. Nuclear Regulatory Commission l

Mail Station Pl-137 l

Washington, D.C. 20555 l t

Attention: Document Control Desk

SUBJECT:

Grand Gu'f Nuclear Station )

Unit 1 i

Docket No. 50-416 License No. NPF-29 Monthly Operating Report GNRO-99/00047 Gentlemen:

In accordance with the requirement of Technical Specification 5.6.4, Entergy Operations is providing the Monthly Operating Report for Grand Gulf Nuclear Station Unit I for May 1999.

l If you have any questions or require additional information, please contact this office. 1 3

Yours truly,

///

W-JEV/SDIleg attachments: 1. Operating Status 3f

2. Average Daily Power Level

3. Unit Shutdown and Power Reductions

4. Main Steam Relief Valve Challenges i cc: (See Next Page)

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GNRO-99/00047 Page 2 of 3 cc: Ms. J. L. Dixon-Herrity, GGNS Sr. Resident (w/a)

Mr. N. S. Reynolds (w/a)

Mr. L. J. Smith (w/a) l

' Mr. H. L. Thomas (w/o) l Mr. Ellis W. Mershoff(w/a)  ;

Regional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive Suite 400 Arlington, TX 76011 l

Mr. Patrick Sekerak, Project Manager

. U.S. Nuclear Regulatory Commission One White Flint North, Mail Stop 13D18 11555 Rockville Pike Rockville, MD 20852-2378 1

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l Attachment I to GNRO-99/00047 I DOCKET No 50-416 DATE 06/08/99 COMPLETED BY S. D. Lin TELEPHONE (601) 437-6793 OPERATING STATUS l

1. Unit Name: GGNS UNIT 1

2. Reporting Period: May 1999

3. Licensed Thermal Power (MWt): 3833 MWT

4. Nameplate Rating (Gross MWe): 1372.5 MWE

5. Design Electrical . Rating (Net MWe): 1250 MWE

6. Maximum Dependable Capacity (Gross MWe): 1254 MWE

7. Maximum Dependable Capacity (Net MWe): 1204 MWE

8. If changes occur in Capacity Ratings (Items 3 i

through 7) Since Last Report. Give Reason:  !

9. Power level To Whicli Restricted, If Any (Net MWe): N/A

10. Reasons For Restrictions, if Any: N/A This Month Yr to Date Cumulative *

11. Hours in Reporting Period 744 3,623 128,103

12. Number of Hours Reactor was Critical 744.0 3,088.9 107,612.4

13. Reactor Reserve Shutdown Hours 0 0 0

14. Hours Generator On-Line 744.0 3,013.0 104,292.2 l

15. Unit Reserve Shutdown Hours 0 0 0

16. Gross Thermal Energy Generated (MWH) 2,836,160 11,302,013 376,151,580

17. Gross Electrical Energy Generated (MWH) 960,331 3,853,761 _121,934,883

18. Nut Electrical Energy Generated (MWH) 924,499 3,709,398 116,942,118

19. Unit Service Factor 100.0 83.2 83.0

20. Unit Availability Factor 100.0 83.2 83.0

21. Unit Capacity Factor (Using MDC Net) 103.2 85.0 81.9

22. Unit Capacity Factor (Using DER Net) 99.4 81.9 75.5

23. Unit Forced Outags Rate 0. 16.8 5.9

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each): Refueling Outage No.10 to start on 10/23/1999 @0000 hour for about 34 days

25. If Shut Down At End of Report Period. Estimated Date of Startup: N/A

26. Units in Test Status (Prior to Commercial Operation):

Forecast Achieved INITIAL CRITICALITY 08/18/82 INITIAL ELECTRICITY 10/20/84 COMMERCIAL OPERATION 07/01/85

• Items 11 through 18 are cumulative results since initial electricity

Attachment 2 to GNRO-99/00047 DOCKET NO 50-416 DATE 06/08/99 COMPLETED BY S. D. Lin TELEPiiONE (601) 437-6793 MONTH: May 1999 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 1264 _

17 1243 2 1260 18 1249 3 1255 19 1253 4 1247 20 1248 5 1237 21 1244 6 1255 22 1C53 7 1262 23 1214 8 1258 24 1248 9 1254 25 1247 10 1255 26 1242 11 1254 27 1247 12 1251 28 1248 8

13 1253 29 1242 14 1255 30 1248 15 1245 31 1244 16 1244

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, Attachment 4 to GNRO-99/00047 DOCKET NO 50-416 DATE 6/08/99 COMPLETED BY C. Gunn TELEPHONE 437-2396 MAIN STEAM SAFETY RELIEF VALVE CIIALLENGES Date of Occurrence: February 22,1999 Plant Operating Condition:

Rx Thermal Power 83 % Rx Pressure (psia) About 600 osia Rx Mode 1 Rx Power (MWE) 1066 Rx Temperatures $47F l

Number of main steam line SRVs: 20 i Number of SRVs affected by event: 6 Narrative:

On February 22,1999, six SRVs were manually opened to control pressure during plant scram with MSIV closed. The following SRVs were opened to evenly heat-up suppression pool:

B2IF041K, F051K, F04iG, F041E, F041C, F0471I l

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