ML031710578
| ML031710578 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 06/13/2003 |
| From: | Hovey R Exelon Generation Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| RHLTR: #03-0043 | |
| Download: ML031710578 (7) | |
Text
Exekn,M Exelon Generation www.exeloncorp.com Nuclear Dresden Generating Station 6500 North Dresden Road Morris, IL 60450-9765 Tel 815-942-2920 June 13, 2003 RHLTR: #03-0043 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555-0001 Dresden Nuclear Power Station, Units 2 and 3 Facility Operating License Nos. DPR-1 9 and DPR-25 Docket Nos. 50-237 and 50-249
Subject:
Monthly Operating Report for May 2003 In accordance with Technical Specifications, Section 5.6.4, Monthly Operating Reports," we are submitting the May 2003 Monthly Operating Report for Dresden Nuclear Power Station (DNPS), Units 2 and 3.
Should you have any questions concerning this letter, please contact Mr. Jeff Hansen, Regulatory Assurance Manager, at (815) 416 - 2800.
Respectfully, R. J. Hovey Site Vice President Dresden Nuclear Power Station Attachment cc: Regional Administrator - NRC Region III NRC Senior Resident Inspector - Dresden Nuclear Power Station
ATTACHMENT DRESDEN NUCLEAR POWER STATION, UNITS 2 AND 3 MONTHLY OPERATING REPORT FOR MAY 2003 EXELON GENERATION COMPANY, LLC FACILITY OPERATING LICENSE NOS. DPR-19 AND DPR-25 NRC DOCKET NOS. 50-237 AND 50-249 I
TABLE OF CONTENTS I. Summary of Operating Experience A. Unit 2 Monthly Operating Experience Summary B. Unit 3 Monthly Operating Experience Summary II. Operating Data Statistics A. Operating Data Report - Dresden Unit 2 B. Operating Data Report - Dresden Unit 3 III Unit Shutdowns A. Unit 2 Shutdowns B. Unit 3 Shutdowns IV. Challenges to Safety and Relief Valves 2
I.
SUMMARY
OF OPERATING EXPERIENCE FOR MAY 2003 A. UNIT 2 MONTHLY OPERATING EXPERIENCE
SUMMARY
During this reporting period, Unit 2 experienced degraded Main Condenser performance, which resulted in several power reductions to perform troubleshooting and corrective actions.
On May 10, 2003, at approximately 2100 hours0.0243 days <br />0.583 hours <br />0.00347 weeks <br />7.9905e-4 months <br />, load was reduced to approximately 25 percent electrical output. During this period, the condenser water box was vented to eliminate possible voiding. The Unit was returned to full power operation on May 12, 2003, at approximately 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br />.
On May 23, 2003, at approximately 2300 hours0.0266 days <br />0.639 hours <br />0.0038 weeks <br />8.7515e-4 months <br />, electrical output was decreased to approximately 20 percent to allow cleaning of the water boxes. On May 27, 2003, at approximately 1500 hours0.0174 days <br />0.417 hours <br />0.00248 weeks <br />5.7075e-4 months <br />, the unit was returned to full power.
With the exception of short periods for routine maintenance, surveillances and the above occurrences, Unit 2 operated at full power throughout the remainder of the reporting period.
B. UNIT 3 MONTHLY OPERATING EXPERIENCE
SUMMARY
On May 2, 2003, at approximately 2200 hours0.0255 days <br />0.611 hours <br />0.00364 weeks <br />8.371e-4 months <br />, Unit 3 power was reduced to approximately 52 percent electrical output to perform a control rod pattern adjustment, and control rod scram time testing. Unit 3 was returned to full power on May 5, 2003, at approximately 0700 hours0.0081 days <br />0.194 hours <br />0.00116 weeks <br />2.6635e-4 months <br />.
With the exception of short periods for routine maintenance, surveillances and the above occurrence, Unit 3 operated at full power throughout the remainder of the reporting period.
3
II. OPERATING DATA STATISTICS A. Dresden Unit 2 Operating Data Report for May 2003 DOCKET NO. 050-237 DATE June 04, 2003 COMPLETED BY Don Hamilton TELEPHONE (815) 416-3585 OPERATING STATUS
- 1. REPORTING PERIOD: May 2003
- 2. CURRENTLY AUTHORIZED POWER LEVEL (MWth): 2,957 MAXIMUM DEPENDABLE CAPACITY (MWe NET): 850 (estimated)
DESIGN ELECTRICAL RATING (MWe Net): 867 Unit Two Monthly Operating Status This Month Year to Date Cumulative
- 3. Reactor Critical - Hours 744 3,623 220,021
- 4. Hours Generator On-Line 744 3,623 211,532
- 5. Unit Reserve Shutdown - Hours 0 0 4
- 6. Net Electrical Energy Generated - MWHe 576,515 3,047,880 141,058,033 4
II. OPERATING DATA STATISTICS B. Dresden Unit 3 Operating Data Report for May 2003 DOCKET NO. 050-249 DATE June 04, 2003 COMPLETED BY Don Hamilton TELEPHONE (815) 416-3585 OPERATING STATUS
- 1. REPORTING PERIOD: May 2003
- 2. CURRENTLY AUTHORIZED POWER LEVEL (MWth): 2,957 MAXIMUM DEPENDABLE CAPACITY (MWe NET): 850 (estimated)
DESIGN ELECTRICAL RATING (MWe Net): 867 Unit Three Monthly Operating Status This Month Year to Date Cumulative
- 5. Reactor Critical - Hours 744 3,623 206,654
- 6. Hours Generator On-Line 744 3,596 198,672
- 9. Unit Reserve Shutdown - Hours 0 0 1
- 10. Net Electrical Energy Generated - MWHe 635,590 1 3,063,817 132,427,218 5
w III. UNIT SHUTDOWNS A. Unit 2 Shutdowvns for May 2003 NO DATE TYPE DURATION REASON (2) METHOD OF CORRECTIVE ACTIONS/
(1) (HOURS) SHUTTING DOWN COMMENTS
_____I None _____ I fREAC T OR (3)
None B. Unit 3 Shutdowns for May 2003 NO DATE TYPE DURATION REASON (2) METHOD OF CORRECTIVE ACTIONS/
(1) (HOURS) SHUTTING DOWN COMMENTS lNO _____ {~IOUR 1 REASON REACTOR (3)
Nonel LEGEND:
(1 Type: (2) Reason (3) Method F - Forced A. Equipment Failure (Explain) 1. Manual S - Scheduled B. Maintenance or Test 2. Manual Trip / Scram C. Refueling 3. Automatic Trip I Scram D. Regulatory Restriction 4. Continuation E. Operator Training &Licensing Exam 5. Other (Explain)
F. Administrative G. Operational Error (Explain)
H. Other (Explain)
IV. Challenges to Safety and Relief Valves Unit 2 None Unit 3 None 6