ML040280410
| ML040280410 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 01/15/2004 |
| From: | Hovey R Exelon Generation Co, Exelon Nuclear |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| RHLTR: #04-0001 | |
| Download: ML040280410 (7) | |
Text
ExekI nSm Exelon Generation Dresden Generating Station 6500 North Dresden Road Morris, IL 60450-9765 Tel 815-942-2920 www.exeloncorp.com Nuclear January 15, 2004 RHLTR: #04-0001 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-19 and DPR-25 Docket Nos. 50-237 and 50-249
Subject:
Monthly Operating Report for December 2003 In accordance with Technical Specifications, Section 5.6.4, "Monthly Operating Reports," we are submitting the December 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 IlIl NRC Senior Resident Inspector - Dresden Nuclear Power Station L-1- L-,',2,(-
ATTACHMENT DRESDEN NUCLEAR POWER STATION, UNITS 2 AND 3 MONTHLY OPERATING REPORT FOR DECEMBER 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.
B.
Unit 2 Monthly Operating Experience Summary Unit 3 Monthly Operating Experience Summary II.
Operating Data Statistics A.
B.
Operating Data Report - Dresden Unit 2 Operating Data Report - Dresden Unit 3 III Unit Shutdowns A.
B.
Unit 2 Shutdowns Unit 3 Shutdowns IV.
Challenges to Safety and Relief Valves 2
I.
SUMMARY
OF OPERATING EXPERIENCE FOR DECEMBER - 2003 A.
UNIT 2 MONTHLY OPERATING EXPERIENCE
SUMMARY
On December 4, 2003, at 0400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br />, load was reduced to approximately 90%
electrical output to perform control rod maintenance and testing. The unit returned to full power operation at 0500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br />.
On December 12, 2003, at 0000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br />, the unit was shutdown due to a failure of the stator cooling water temperature control valve. The outage was completed and the unit returned online at 1200 on December 13, 2003, and returned to full power operation at 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> on December 15, 2003.
On December 17, 2003, at 0300 hours0.00347 days <br />0.0833 hours <br />4.960317e-4 weeks <br />1.1415e-4 months <br />, load was reduced to approximately 90%
electrical output to perform a control rod pattern adjustment. The unit returned to full power operation at 0400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br />.
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
Since the beginning of December, the unit was operating at the pre-Extended Power Up-rate Power level, approximately 85%, due to potential steam dryer concerns. On December 6, 2003, at 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br />, the unit was shutdown to perform repairs and modifications to the steam dryer. The outage was completed and the unit returned online at 2300 on December 20, 2003, with the unit reaching full power at 2000 on December 22, 2003.
With the exception of short periods for routine maintenance, surveillances and the above occurrences, 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 December 2003 DOCKET NO.
DATE COMPLETED BY TELEPHONE 050-237 January 06, 2004 Eric Steckhan (815) 416-2357 1.
2.
OPERATING STATUS REPORTING PERIOD: December 2003 CURRENTLY AUTHORIZED POWER LEVEL (MWth): 2,957 MAXIMUM DEPENDABLE CAPACITY (MWe NET): 850 (estimated)
DESIGN ELECTRICAL RATING (MWe Net): 867 Unit 2 Monthly perating Status This Month Year to Date Cumulative
- 3. Reactor Critical - Hours 718 78,090 224,488
- 4. HoursGenerator On-Line HX 1
7,999 215,908
- 5. Unit Reserve Shutdown - Hours 0
0 4
- 6. Net Electrical Energy Generated - MWHe 600,926 6,703,108 144,713,261 4
II.
OPERATING DATA STATISTICS B. Dresden Unit 3 Operating Data Report for December 2003 DOCKET NO.
050-249 DATE January 06, 2004 COMPLETED BY Eric Steckhan TELEPHONE (815) 416-2357 OPERATING STATUS
- 1.
REPORTING PERIOD: December 2003
- 2.
CURRENTLY AUTHORIZED POWER LEVEL (MWth): 2,957 MAXIMUM DEPENDABLE CAPACITY (MWe NET): 850 (estimated)
DESIGN ELECTRICAL RATING (MWe Net): 867 Unit 3e Monthly (perating Status This Month Year to Date Cumulative
- 3. Reactor Critical - Hours 408 8,294 211,325
- 4. Hours Generator On-Line 387 8,206 203,282
- 5. Unit Reserve Shutdown - Hours 0
0 1
- 6. Net Electrical Energy Generated - MWHe 300,499 1 6,963,860 136,327,261 5
t III.
UNIT SHUTDOWNS A. Unit 2 Shutdowns for December 2003 NO DATE TYPE DURATION REASON (2) METHOD OF CORRECTIVE ACTIONS/
( I)
(HOURS)
SHUTTING DOWN COMMENTS REACTOR (3) 4 12/12/03 F
35 A
2 Forced outage due to failure of the Stator Water Cooling temperature control valve.
B. Unit 3 Shutdowns for December 2003 NO DATE TYPE DURATION REASON (2) METHOD OF CORRECTIVE ACTIONS/
(I)
(HOURS)
SHUTTING DOWN COMMENTS REACTOR (3) l_l 3
12/06/03 S
357 B
Maintenance outage to perform modifications to the steam dryer.
LEGEND:
(1) Type:
(2) Reason (3) Mlethod 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 & Licensing Exam
- 5. Other (Explain)
F. Administrative G. Operational Error (Explain)
H. Other (Explain)
IV.
Challenges to Safety and Relief Valves Unit 2 Unit 3 None None 6