ML032950473

September 2003 Monthly Operating Report from Dresden, Units 2 & 3

ML032950473
Person / Time
Site:	Dresden
Issue date:	10/15/2003
From:	Hovey R Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RHLTR: #03-0068
Download: ML032950473 (7)

Text

ExekIn M Exelon Generation Dresden Generating Station www.exeloncorp.com Nuclear 6500 North Dresden Road Morris, IL 60450-9765 Tel 815-942-2920 October 15, 2003 RHLTR: #03-0068 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 September 2003 In accordance with Technical Specifications, Section 5.6.4, "Monthly Operating Reports," we are submitting the September 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

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ATTACHMENT DRESDEN NUCLEAR POWVER STATION, UNITS 2 AND 3 MONTHLY OPERATING REPORT FOR SEPTEMBER 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

1. 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

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SUMMARY

OF OPERATING EXPERIENCE FOR SEPTEMBER 2003 A. UNIT 2 MONTHLY OPERATING EXPERIENCE

SUMMARY

On September 7, 2003 at approximately 0500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br />, load was reduced to 64 percent electrical output to perform control rod sequence exchanges and a planned Isolation Condenser Test. The Unit was returned to full power operation on September 7, 2003, at approximately 1300 hours0.015 days <br />0.361 hours <br />0.00215 weeks <br />4.9465e-4 months <br />.

On September 28, 2003, at approximately 0500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br />, load was reduced to 73 percent electrical output to perform maintenance on a reactor feed pump and perform reactor feedwater level control tuning.

While at reduced load, on September 30 at approximately 2013 hours0.0233 days <br />0.559 hours <br />0.00333 weeks <br />7.659465e-4 months <br />, the Unit scrammed from a loss of one of the two operating reactor feed pumps. The Unit responded as expected to the scram and did not return to service during the remainder of the month.

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 September 27, 2003, at approximately 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br />, load was reduced to approximately 75 percent electrical output to perform control rod pattern adjustments. The Unit was returned to full power operation on September 29, 2003, at approximately 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 occurrence, Unit 3 operated at full power throughout the remainder of the reporting period.

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II. OPERATING DATA STATISTICS A. Dresden Unit 2 Operating Data Report for September 2003 DOCKET NO. 050-237 DATE October 05, 2003 COMPLETED BY Eric Steckhan TELEPHONE (815) 416-2357 OPERATING STATUS I. REPORTING PERIOD: September 2003

2. CURRENTLY AUTHORIZED POWER LEVEL (MWth): 2,957 MAXIMUM DEPENDABLE CAPACITY (MWe NET): 850 (estimated)

DESIGN ELECTRICAL RATING (MWe Net): 867 Unit Two Nlonthl Operating Status l This Month Year to Date Cumulative

3. Reactor Critical - Hours 717 6,548 222,946

4. Hours Generator On-Line 717 6,548 214,457

5. Unit Reserve Shutdown - Hours 0 0 4

6. Net Electrical Energy Generated - MWHe 613,066 5,559,766 143,569,919 4

11. OPERATING DATA STATISTICS B. Dresden Unit 3 Operating Data Report for September 2003 DOCKET NO. 050-249 DATE October 05, 2003 COMPLETED BY Eric Steckhan TELEPHONE (815) 416-2357 OPERATING STATUS I. REPORTING PERIOD: September 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 720 6,421 209,452

6. Hours Generator On-Line 720 6,354 201,430

9. Unit Reserve Shutdown - Hours 0 0 1

10. Net Electrical Energy Generated - MWHe 616,938 5,426,030 134,789,431 5

III. UNIT SHUTDOWNS A. Unit 2 Shutdowns for September 2003 NO DATE TYPE DURATION REASON (2) METHOD OF CORRECTIVE ACTIONS/

(1) (HOURS) SHUTOING DOWN COMMENTS REACTOR (3)__ _ _ _ _ _ _ _ _ _ _ _

09/30/03 F 3 A 3 B phase cable of reactor feed pump motor shunted to shielding B. Unit 3 Shutdowns for September 2003 NO None lNone DATE TYPE (1)

________.1~

DURATION (HOURS)

__________ 4 REASON (2)

METHOD OF SHUTTING DOWN REACTOR (3)

CORRECTIVE ACTIONS/

COMMENTS 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 / Scram D. Regulatory Restriction 4. Continuation E. OperatorTraining& Licensing Exam S. 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