ML020420381

December 2001 Monthly Operating Report for Pilgrim Nuclear Power Station

ML020420381
Person / Time
Site:	Pilgrim
Issue date:	01/15/2002
From:	Riggs W Entergy Nuclear Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
2.02.003
Download: ML020420381 (3)

Text

Entergy Nuclear Generation Co.

Pilgrim Station M~ egy 600 Rocky Hill Road Plymouth, MA 02360 William J. Riggs Director, Nuclear Assessment January 15, 2002 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555

SUBJECT:

Entergy Nuclear Generation Company Pilgrim Nuclear Power Station Docket No. 50-293 DECEMBER 2001 Monthly Operating Report LETTER NUMBER: 2.02.003

Dear Sir or Madam:

In accordance with Pilgrim Nuclear Power Station Technical Specification 5.6.4, the operational status summary for Pilgrim Nuclear Power Station is provided in the attachment for your information and planning. Should you have questions or comments concerning this report, please contact Jeff Rogers at (508) 830-8110.

Sincerely, JLR/

Attachment:

DECEMBER 2001 Monthly Operating Report cc: Mr. Hubert Miller Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Senior Resident Inspector 202003

Attachment OPERATING DATA REPORT DOCKET NO. 50-293 NAME: Pilgiri m COMPLETED BY: J. L. Rogers TELEPHONE: (508) 830-8110 REPORT MONTH: DECEMBER 2001 OPERATING STATUS NOTES

1. Unit Name PILGRIM 1

2. Reporting Period DECEMBER 2001

3. Licensed Thermal Power (MWt) 1998

4. Nameplate Rating (Gross MWe) 678

5. Design Electrical Rating (Net MWe) 655

6. Maximum Dependable Capacity (Gross MWe) 680

7. Maximum Dependable Capacity (Net MWe) 653

8. If Changes Occur in Capacity Ratings (Items 3 through 7) Since Last Report, Give Reasons:

No changes.

9. Power Level To Which Restricted, IfAny (Net MWe): None

10. Reasons For Restrictions, IfAny: N/A THIS MONTH YR-TO-DATE CUMULATIVE

11. Hours in Reporting Period 744.0 8,760.0 254,760.0

12. Hours Reactor Critical 675.1 7,972.2 174,475.8

13. Hours Reactor Reserve Shutdown 0.0 0.0 0.0

14. Hours Generator On-Line 662.3 7,886.0 169,255.8

15. Hours Unit Reserve Shutdown 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 1,280,220.0 15,307,647.1 308,090,228.4

17. Gross Electrical Energy Generated (MWH) 448,060.0 5,347,530.0 104,936,494.0

18. Net Electrical Energy Generated (MWH) 431,382.9 5,144,037.2 100,906,427.0

19. Unit Service Factor 89.0 90.0 66.4

20. Unit Availability Factor 89.0 90.0 66.4

21. Unit Capacity Factor (Using MDC Net) 88.8 89.9 60.7

22. Unit Capacity Factor (Using DER Net) 88.5 89.7 60.5

23. Unit Forced Outage Rate 11.0 2.4 9.9 24 Shutdowns, Scheduled Outages Over Next 6 Months (Type, Date, Duration)

None.

25. If Shutdown at End of Report Period, Estimated Date of Start-Up: Unit Operating 202003

DOCKET NO. 50-293 NAME: Pilgrim COMPLETED BY: J.L. Rogers TELEPHONE: (508) 830-8110 REPORT MONTH: DECEMBER 2001 OPERATIONAL

SUMMARY

The plant entered the reporting period at 100 percent core thermal power (CTP) until December 14 at 2030 hours0.0235 days <br />0.564 hours <br />0.00336 weeks <br />7.72415e-4 months <br /> when a power reduction to approximately 55 percent CTP was commenced to perform a condenser thermal backwash. Reactor power was restored to 100 percent CTP on December 16 at 0637 hours0.00737 days <br />0.177 hours <br />0.00105 weeks <br />2.423785e-4 months <br />. A power reduction was commenced on December 17 at 1147 hours0.0133 days <br />0.319 hours <br />0.0019 weeks <br />4.364335e-4 months <br /> to perform a control rod pattern adjustment. Reactor power was restored to 100 percent CTP at 2010 hours0.0233 days <br />0.558 hours <br />0.00332 weeks <br />7.64805e-4 months <br /> where it was maintained until an automatic reactor scram occurred on December 27 at 1321 hours0.0153 days <br />0.367 hours <br />0.00218 weeks <br />5.026405e-4 months <br />. The plant automatically shut down when an unexpected trip of both reactor recirculation pumps occurred during a routine surveillance test of the Anticipated Transient Without Scram (ATWS) circuitry. The trip was apparently due to a mechanical failure of a test switch within the ATWS actuation logic. The reactor was made critical on December 30 at 1014 hours0.0117 days <br />0.282 hours <br />0.00168 weeks <br />3.85827e-4 months <br />, and was synchronized to the grid on December 30 at 2303 hours0.0267 days <br />0.64 hours <br />0.00381 weeks <br />8.762915e-4 months <br />. At the end of the reporting period, the reactor was at approximately 95 percent CTP.

UNIT SHUTDOWNS METHOD OF CAUSE/CORRECTIVE ACTION/COMMENTS NO. DATE TYPE DURATION REASON SHUTTING 1 (HOURS) 2 DOWN REACTOR 3

3 12/27/01 F 81.7 A 3 Automatic scram caused by an unexpected trip of both reactor recirculation pumps during a routine, scheduled surveillance test. LER 2001-007-00 will contain additional information.

1 2 3 F - Forced A - Equip Failure 1 - Manual S - Scheduled B - Main or Test 2 - Manual Scram C - Refueling 3 - Auto Scram D - Regulatory Restriction 4 - Continuation E - Operator Training & 5 - Other License Examination F - Admin G - Operation Error H - Other 202003