ML051120195

March 2005 Monthly Operating Report for Braidwood Station Units 1 and 2

ML051120195
Person / Time
Site:	Braidwood
Issue date:	04/15/2005
From:	Boerschig G Exelon Generation Co, Exelon Nuclear
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
BW050035
Download: ML051120195 (4)

Text

ExekI emn Exelon Generation Company, LLC www.exeloncorp.com Nuclear Braidwood Station 35100 South Rt 53, Suite 84 Braceville, IL 60407-9619 Tel. 815-417-2000 April 15, 2005 BW050035 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Braidwood Station, Units 1 and 2 Facility Operating License Nos. NPF-72 and NPF-77 NRC Docket Nos. STN 50-456 and STN 50-457

Subject:

Monthly Operating Report In accordance with Technical Specification 5.6.4, "Monthly Operating Reports," we are submitting the Monthly Operating Report for Braidwood Station, Units 1 and 2. This report covers the period of March 1, 2005 through March 31, 2005.

If you have any questions regarding this letter, please contact Mr. Dale Ambler, Regulatory Assurance Manager, at (815) 417-2800.

Respectfully, Gregory A. Boerschig Plant Manager Braidwood Station Attachment DH/law cc: Regional Administrator - NRC Region IlIl NRC Senior Resident Inspector - Braidwood Station

ATTACHMENT BRAIDWOOD STATION UNITS 1 AND 2 MONTHLY OPERATING REPORT EXELON GENERATION COMPANY, LLC FACILITY OPERATING LICENSE NOS. NPF-72 AND NPF-77 NRC DOCKET NOS. STN 50-456 AND STN 50-457

Docket No: 50-456 Unit: Braidwood 1 Date: 04/13/2005 Completed by. Don Hildebrant Telephone: (815)417-2173 Braidwood Unit I Reporting Period: March 2005 A. OPERATING DATA REPORT IDesi n Electrical Rating (MWe Net) 1187 IMaximum Dependable Capacity (MWe Net) l 1156 1 Month Year To Date Cumulative Hours Reactor Critical (Hours) 744.0 2,160.0 125,352.7 Hours Generator on Line (Hours) 744.0 2,160.0 124,364.8 Unit Reserve Shutdown (Hours) 0.0 0.0 0.0 Net Electrical Energy (MWh) 898,152 2,603,412 135,602,786 B. UNIT SHUTDOWNS TYPE REASON 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 / Ucensee Examination 5 - Other (explain)

F - Administrative G - Operator Error (explain)

H - Other (explain)

N Date Type Duration Reason Method Cause and Corrective Actions and Hours Comments None

SUMMARY

Unit operated normally at full power for the entire month.

C. SAFETY / RELIEF VALVE OPERATIONS Date Valves Actuated No. & Type Plant Condition Description of Event I Actuation l None I Data From: Production Data Bank and Operator Logs

Docket No: 50-457 Unit: Braidwood 2 Date: 04/13/2005 Completed by- Don Hildebrant Telephone: (815)417-2173 Braidwood Unit 2 Reporting Period: March 2005 A. OPERATING DATA REPORT Desi n Electrical Rating (MWe Net) 1155 iMaximumDependableCapacity(MWe Net) 1131 l Month Year To Date Cumulative Hours Reactor Critical (Hours) 671.2 2,087.2 129,288.6 Hours Generator on Line (Hours) 661.0 2,077.0 128,618.9 Unit Reserve Shutdown (Hours) 0.0 0.0 0.0 Net Electrical Energy (MWh) 772,223 2,434,468 139.774,248 B. UNIT SHUTDOWNS TYPE REASON 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 / Licensee Examination 5 - Other (explain)

F - Administrative G - Operator Error (explain)

H - Other (explain)

No Date Type Duration Reason Method Cause and Corrective Actions and Hours Comments 1 03/28/2005 F 106.25 A 3 On 03/28/2005 at 12:46 a failure In a generator bushing caused a Unit trip.

Repairs were made and the Unit was returned to normal service on

__ _ _ 04/01/2005 at 23:01.

SUMMARY

Unit operated normally at full power until 03/28/2005 at 12:46 when a failure in a generator bushing caused a Unit trip and loss of generation for the remainder of the month.

C. SAFETY I RELIEF VALVE OPERATIONS Date Valves Actuatedl No. &Type Plant Condition Description of Event

- IActuation None l Data From: Production Data Bank and Operator Logs