ML031120335

March 2003 Monthly Operating Report for Dresden, Units 2 & 3

ML031120335
Person / Time
Site:	Dresden
Issue date:	04/15/2003
From:	Hovey R Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RHLTR: #03-0024
Download: ML031120335 (7)

Text

ExeIe Nuclear n.M Exelon Generation www exeloncorp corn Dresden Generating Station IA cIea 6500 North Dresden Road Morris, IL 60450-9765 Tel 815-942-2920 April 15, 2003 RHLTR: #03-0024 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 March 2003 In accordance with Technical Specifications, Section 5.6.4, "Monthly Operating Reports," we are submitting the March 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

ATTACHMENT DRESDEN NUCLEAR POWER STATION, UNITS 2 AND 3 MONTHLY OPERATING REPORT FOR MARCH 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 IN7. Challenges to Safety and Relief Valves 2

I.

SUMMARY

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

SUMMARY

Unit 2 operated at full power throughout the reporting period with the exception of short periods for routine maintenance and surveillances.

B. UNIT 3 MONTHLY OPERATING EXPERIENCE

SUMMARY

On March 29, 2003, at approximately 0000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> CST, a reactor power reduction was commended to repair a crack on the IA inboard Main Steam Isolation Valve pneumatic accumulator. On March 29, 2003, at approximately 0700 hours0.0081 days <br />0.194 hours <br />0.00116 weeks <br />2.6635e-4 months <br />, the turbine was taken off line, while the reactor remained critical. The Unit 3 turbine was placed back in service on March 30, 2003 at approximately 1046 hours0.0121 days <br />0.291 hours <br />0.00173 weeks <br />3.98003e-4 months <br />. Unit 3 power ascension continued until the end of the reporting period. On March 3 1, 2003, reactor power was approximately 62 percent.

With the exception of the above occurrence, Unit 3 operated at full power throughout the reporting period with the exception of short periods for routine maintenance and surveillances.

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II. OPERATING DATA STATISTICS A. Dresden Unit 2 Operating Data Report for March 2003 DOCKET NO. 050-237 DATE April 01, 2003 COMPLETED BY Don Hamilton TELEPHONE (815) 416-3585 OPERATING STATUS

1. REPORTING PERIOD: March 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 2,160 218,558

4. Hours Generator On-Line 744 2,160 210,069

5. Unit Reserve Shutdown - Hours 0 0 4

6. Net Electrical Energy Generated - MWHe 1 646,661 1,847,135 139,857,288 4

II. OPERATING DATA STATISTICS B. Dresden Unit 3 Operating Data Report for March 2003 DOCKET NO. 050-249 DATE April 01, 2003 COMPLETED BY Don Hamilton TELEPHONE (815) 416-3585 OPERATING STATUS

1. REPORTING PERIOD: March 2003

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

DESIGN ELECTRICAL RATING (MWe Net): 867 Unit Three Month] Operating Status I This Month Year to Date Cumulative

5. Reactor Critical - Hours 744 2,160 205,191

6. Hours Generator On-Line 717 2,133 197,209

9. Unit Reserve Shutdown - Hours 0 0 1

10. Net Electrical Energy Generated - MWHe 603,862 1,810,341 131,173,742 5

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

1(1) (HOURS) SHUTTING DOWN REACTOR (3)

COMMENTS None B. Unit 3 Shutdowns for March 2003 NO DATE TYPE DURATION REASON (2) METHOD OF CORRECTIVE ACTIONS/

(1) (HOURS) SHUTTING DOWN COMMENTS REACTOR (3)

D3F42 030329 F 27 A 4 A pneumatic leak was identified in the MSIV Reactor remained drywell. The leak could not be Pneumatic critical; while the repaired with the plant online. The Accumulator turbine was removed plant was taken offline to complete the Failure from service. repairs.

LEGEND:

(1) Type: (2) Reason (3) Method F - Forced A Equipment Failure (Explain I Manual S - Scheduled B. Maintenance or Test 2. Manual Scram C. Refueling 3. Automatic Scram D Regulatory Restriction 4 Other (Explain)

E Operator Training & Licensing Exam 5 Load Reduction F. Administrative G Operational Error H Other (Explain)

IV. Challenges to Safety and Relief Valves Unit 2 None Unit 3 None 6