ML021720407
| ML021720407 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 06/12/2002 |
| From: | Braun R Exelon Nuclear |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| GL-97-002 | |
| Download: ML021720407 (3) | |
Text
Exekoni.
Exelon Nuclear Limerick Generating Station P.O. Box 2300 Sanatoga, PA 19464 www.exeloncorp.com Nuclear T.S. 6.9.1.6 June 12, 2002 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 Limerick Generating Station, Units 1 and 2 Facility Operating License Nos. NPF-39 and NPF-85 NRC Docket Nos. 50-352 and 50-353
Subject:
Monthly Operating Reports for May 2002 Enclosed are the monthly operating reports for Limerick Units 1 and 2 for the month of May 2002 forwarded pursuant to Technical Specification 6.9.1.6 and the guidance of GL 97-02.
If you have any questions or require additional information, please do not hesitate to contact us.
Sincerely, Robert C. Braun Plant Manager Attachments cc:
H. J. Miller, Administrator, Region I, USNRC A. L. Burritt, LGS USNRC Senior Resident Inspector
Limerick 1 50-352 6/12/02 by: Greg Lee (610)718-3707 A. OPERATING DATA REPORT REPORTING PERIOD-May 2002 Design Electrical Rating (MWe-Net) 11191 Maximum Dependable Capacity (MWe-Net) 1134 Cumulative Hours Reactor Critical (Hours) 659.7 3,176.2 124,731.4 Hours Generator On-Line (Hours) 644.8 3,108.0 122,772.1 Unit.Reserve Shutdown Hours (Hours) 0.0 0.0 0.0 Net Electrical Energy (MWh) 712,656 3,357,788 125,839,787 B.
UNIT SHUTDOWN Unit 1 ended the month of May 2002 at 100% RTP.
Type F-Forced S-Scheduled Reason A-Equipment Failure (Explain)
B-Maintenance or Test C-Refueling D-Regulatory Restriction E-Operator Training/License Examination F-Administrative G-Operational Error (Explain)
H-Other (Explain)
Method 1-Manual 2-Manual Trip/Scram 3-Automatic Trip/Scram 4-Continuation 5-Other (Explain)
C. SAFETY/RELIEF VALVE OPERATION Unit:
Docket No:
Date:
Completed Telephone:
Month Year to Date No.
Date Type Duration Reason Method Corrective Actions/Comments (yymmdd)
(Hours) 2 020519 F
99.2 A
3 1 F37-Turbine trip due to high turbine thrust bearing wear detector failure.
SUMMARY
Unit 1 began the month of May 2002 at 100% of rated thermal power (RTP).
On May 18th at 22:00 hours, commenced power reduction to 94% RTP to perform MSIV and turbine valve testing.
On May 1 9 th at 00:54 hours, the turbine tripped, and the reactor automatically scrammed due to high turbine thrust bearing wear detector failure.
On May 2 2 nd at 13:14 hours, reactor criticality was achieved.
On May 2 3 rd at 04:05 hours, the main generator was synchronized to the grid.
On May 2 61h at 10:05 hours, reactor power was reduced from 94% RTP to 65% RTP for rod pattern adjustment. Power ascension was reestablished at 13:10 hours.
On May 2 7 th at 22:58 hours, reactor power was restored to 100% RTP.
Date Valves Actuated No. & Type of Actuation I Plant Condition I Description of Event None During May
Unit:
Limerick 2 Docket No:
50-353 Date:
6/12/02 Completed by: Greg Lee Telephone:
(610)718-3707 A.
OPERATING DATA REPORT REPORTING PERIOD-May 2002 Design Electrical Rating (MWe-Net) 1191 Maximum Dependable Capacity (MWe-Net) 1134 Month Year to Date Cumulative Hours Reactor Critical (Hours) 744.0 3,623.0 101,056.0 Hours Generator On-Line (Hours) 744.0 3,623.0 99,385.9 Unit Reserve Shutdown Hours (Hours) 0.0 0.0 0.0 Net Electrical Energy (MWh) 841,484 4,213,317 105,838,041 B.
UNIT SHUTDOWN On May 2 8th at 19:40 hours, reactor power was restored to 100% RTP.
Unit 2 ended the month of May 2002 at 100% RTP.
Type Reason Method F-Forced A-Equipment Failure (Explain) 1-Manual S-Scheduled B-Maintenance or Test 2-Manual Trip/Scram C-Refueling 3-Automatic Trip/Scram D-Regulatory Restriction 4-Continuation E-Operator Training/License Examination 5-Other (Explain)
F-Administrative G-Operational Error (Explain)
H-Other (Explain)
C. SAFETY/RELIEF VALVE OPERATION Date I Valves Actuated No. & Type of Actuation I Plant Condition I Description of Event None During May I
I No.
Date Type Duration Reason Method Corrective ActionslComments (yymmdd)
(Hours)
None During May
SUMMARY
Unit 2 began the month of May 2002 at 100% of rated thermal power (RTP).
On May 24t1 at 22:08 hours, commenced power reduction to 57% RTP to perform MSIV & turbine valve testing, and condenser waterbox cleaning.
On May 2 7th at 17:50 hours, reactor power was restored to 100% RTP.
On May 2 7 th at 22:35 hours, commenced power reduction to 80% RTP to repair the limit switch on MSV# 2.