ML050260197

December 2004 Monthly Operating Report for Braidwood Station, Units 1 and 2

ML050260197
Person / Time
Site:	Braidwood
Issue date:	01/14/2005
From:	Polson K Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
BW050004
Download: ML050260197 (4)

Text

Exek' nsm Exelon Generation Company, LLC www.exeloncorp.com Nuclear Braidwood Station 35100 South Rt 53, Suite 84 Braceville, IL 60407-9619 Tel. 815-417-2000 January 14, 2005 BW050004 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 December 1, 2004 through December 31, 2004.

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

Respectfully, Keith Jiolson Site Vice President Braidwood Station Attachment DH/law cc: Regional Administrator - NRC Region III NRC Senior Resident Inspector - Braidwood Station

ATTACHMENT BRAIDWOOD STATION UNITS I 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 I Date: 01105/2005 Completed by. Don Hildebrant Telephone: (815)417-2173 Braidwood Unit 1 Reporting Period: December 2004 A. OPERATING DATA REPORT Design Electrical Rating (MWe Net) 1187 Maximum Dependable Capacit (MWe Net) 1161 Month Year To Date Cumulative l Hours Reactor Critical (Hours) 744.0 8,325.1 123 192.7 Hours Generator on Line (Hours) 744.0 8,310.0 122,204.8 Unit Reserve Shutdown Hours) 0.0 0.0 0.0 Net Electrical Energy (MWh) 895,646 9,807,187 132 999 374 B. UNIT SHUTDOWNS TYEE REASON METHOD F - Forced A - Equipment Failure (explain) I - Manual S - Scheduled B - Maintenance or Test 2 - Manual Trip I 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 None

SUMMARY

Unit operated normally except for three derate periods during the month. 1) 12/13 the C Low Pressure Heater string isolated due to level control instrumentation problems, derate 1457 MWh (IR 281958), 2) 12/22 Feedwater Pump swap following maintenance activities, derate 273 MWh,

3) 12/22 Low Pressure Heaters 12A, B, C level control instrumentation problems resulting in a ramp down, derate 576 MWh (IR 285029).

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

Docket No: 50-457 '

Unit: Braidwood 2 Date: 01/0512005 Completed by. Don Hildebrant Telephone: (815)417-2173 Braidwood Unit 2 Reporting Period: December 2004 A. OPERATING DATA REPORT Desi n Electrical Rating (MWe Net) 1155 Maximum Dependable Capacity(MWe Net) l 1129 Month Year To Date Cumulative l Hours Reactor Critical (Hours) 728.1 8,768.1 127,201.4 Hours Generator on Line (Hours) 717.0 8,757.0 126,541.9 Unit Reserve Shutdown (Hours) 0.0 0.0 0.0 Net Electrical Energy (MWh) 824,139 10,200,980 137,339,780 B. UNIT SHUTDOWNS TYPE REASON METHOD F - Forced A - Equipment Failure (explain) I - Manual S - Scheduled B - Maintenance or Test 2 - Manual Trip / Scram C - Refueling 3 - Automatic Trip I Scram D - Regulatory Restriction 4 - Continuation E - Operator Training I 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 12/22/2004 F 28.13 A 3 Unit tripped due to a level controller failure on the 2C Steam Generator, see

__ IR 285216 for details.

SUMMARY

Unit operated normally until 12122 when the Unit tripped due to a level controller failure on the 2C Steam Generator, derate 49,715 MWh (IR 285216)

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

[ Actuation None I Data From: Production Data Bank and Operator Logs