SVPLTR 04-0086, November 2004 Monthly Operating Report for Dresden Nuclear Power Station, Units 2 and 3

November 2004 Monthly Operating Report for Dresden Nuclear Power Station, Units 2 and 3

ML043570451
Person / Time
Site:	Dresden
Issue date:	12/14/2004
From:	Bost D Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
SVPLTR # 04-0086
Download: ML043570451 (7)

Text

Exelon Generation Company, LLC www.exeloncorp.com Exelkn( Nuclear Dresden Nuclear Power Station 6500 North Dresden Road Morris, IL60450-9765 December 14, 2004 SVPLTR # 04-0086 U. S. Nuclear Regulatory Commission ATTN: 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 NRC Docket Nos. 50-237 and 50-249

Subject:

Monthly Operating Report for November 2004 In accordance with Technical Specifications, Section 5.6.4, "Monthly Operating Reports," we are submitting the November 2004 Monthly Operating Report for Dresden Nuclear Power Station (DNPS), Units 2 and 3.

Should you have any questions concerning this letter, please contact Mr. Pedro Salas, Regulatory Assurance Manager, at (815) 416 - 2800.

Respectfully, Dan, G. Bost Sit Vice President Dresden Nuclear Power Station Attachment cc: Regional Administrator- NRC Region IlIl NRC Senior Resident Inspector - Dresden Nuclear Power Station sac?4

ATTACHMENT DRESDEN NUCLEAR POWER STATION, UNITS 2 AND 3 MONTHLY OPERATING REPORT FOR NOVEMBER 2004 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 NOVEMBER - 2004 A. UNIT 2 MONTHLY OPERATING EXPERIENCE

SUMMARY

On November 1, at approximately 0300 hours0.00347 days <br />0.0833 hours <br />4.960317e-4 weeks <br />1.1415e-4 months <br />, the unit was taken offline to inspect the main generator rotor due to high bearing vibration and inspection results on Unit 3. A crack on the rotor was detected and repairs were made at a vendor facility. The unit remained offline for the remainder of the month.

B. UNIT 3 MONTHLY OPERATING EXPERIENCE

SUMMARY

Unit 3 began the month of November shutdown for a scheduled refueling outage.

The outage was extended to repair a crack in the main generator rotor shaft. The crack was detected during a scheduled inspection of the rotor at a vendor facility.

The unit was offline for the entire month.

3

1I. OPERATING DATA STATISTICS A. Dresden Unit 2 Operating Data Report for November 2004 DOCKET NO. 050-237 DATE December 1, 2004 COMPLETED BY Joseph Reda TELEPHONE (815) 416-3081 OPERATING STATUS

1. REPORTING PERIOD: November 2004

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

DESIGN ELECTRICAL RATING (MWe Net): 867 Unit 2 Monthly Operating Status This Year to Cumulative Month Date

3. Reactor Critical - Hours 33 6,773 231,249

4. Hours Generator On-Line 3 6,576 222,484

5. Unit Reserve Shutdown - Hours 0 0 4

6. Net Electrical Energy Generated -

MWHe 739 5,510,811 .150,224,072 4

II. OPERATING DATA STATISTICS B. Dresden Unit 3 Operating Data Report for November 2004 DOCKET NO. 050-249 DATE December 1, 2004 COMPLETED BY Joseph Reda TELEPHONE (815) 416-3081 OPERATING STATUS

1. REPORTING PERIOD: November 2004

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

DESIGN ELECTRICAL RATING (MWe Net): 867 Unit 3 Monthly Oprating Status l This Year to Cumulative Month Date

3. Reactor Critical - Hours 0 7,019 218,347

4. Hours Generator On-Line 0 6,958 210,240

5. Unit Reserve Shutdown - Hours0 0 1

6. Net Electrical Energy Generated -

MWHe 0 5,974,735 142,301,996 5

III. UNIT SHUTDOWNS A. Unit 2 Shutdowns for November 2004 NO DATE TYPE DURATION REASON (2) METHOD OF CORRECTIVE ACTIONS/

(1) (HOURS) SHUTTING DOWN COMMENTS

________REACTOR (3) 6 11/01/04 F 717 B I The unit was taken offline to inspect the (November (Inspect and repair main generator rotor due to high bearing alone) the main generator vibration and inspection results on Unit rotor shaft) 3. A crack on the rotor was detected and repairs were made at a vendor facility.

B. Unit 3 Shutdowns for November 2004 NO DATE TYPE DURATION REASON (2) METHOD OF CORRECTIVE ACTIONS/

(1) () (OR)SHUTTING (HOURS) REACTORDOWN (3) COMMENTS 4 10/26/04 S 720 C I This was a scheduled refueling outage.

(November The outage was extended to repair a alone) crack in the main generator rotor shaft that was detected during a scheduled inspection of the rotor at a vendor l_ _ _facility.

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. Operator Training & Licensing Exam 5. Other (Explain)

F. Administrative G. Operational Enror (Explain)

H. Other (Explain)

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