ML022330639

July 2002 Monthly Operating Report for Sequoyah

ML022330639
Person / Time
Site:	Sequoyah
Issue date:	08/14/2002
From:	Salas P Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RIS-01-005
Download: ML022330639 (5)

Text

August 14, 2002 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:

In the Matter of ) Docket Nos. 50-327 Tennessee Valley Authority ) 50-328 SEQUOYAH NUCLEAR PLANT - JULY MONTHLY OPERATING REPORT The enclosure provides the July Monthly Operating Report as required by Sequoyah Technical Specifications Section 6.9.1.10.

This letter is being sent in accordance with NRC RIS 2001-05.

If you have any questions concerning this matter, please call me at (423) 843-7170 or J. D. Smith at (423) 843-6672.

Sincerely, Original signed by Pedro Salas Licensing and Industry Affairs Manager Enclosure

ENCLOSURE TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT (SQN)

MONTHLY OPERATING REPORT JULY 2002 UNIT 1 DOCKET NUMBER 50-327 LICENSE NUMBER DPR-77 UNIT 2 DOCKET NUMBER 50-328 LICENSE NUMBER DPR-79

OPERATING DATA REPORT Docket No. 50-327 Unit Name SQN Unit 1 Date August 6, 2002 Completed By Renee McKaig Telephone (423) 843-8963 Reporting Period

1. Design Electrical Rating (Net MWe): 1160

2. Maximum Dependable Capacity (MWe-Net) 1126 Month Yr-to-Date Cumulative

3. Number of Hours Reactor was Critical 744.0 5,087.0 121,792.8

4. Hours Generator On-Line 744.0 5,087.0 119,867.6

5. Unit Reserve Shutdown Hours 0.0 0.0 0.0

6. Net Electrical Energy Generated (MWh) 824,221 5,793,461 130,124,021 Docket No. 50-328 Unit Name SQN Unit 2 Date August 6, 2002 Completed By Renee McKaig Telephone (423) 843-8963 Reporting Period

1. Design Electrical Rating (Net MWe): 1160

2. Maximum Dependable Capacity (MWe-Net): 1120 Month Yr-to-Date Cumulative

3. Number of Hours Reactor was Critical 703.9 4,173.8 125,680.0

4. Hours Generator On-Line 694.9 4,098.3 123,552.3

5. Unit Reserve Shutdown Hours 0.0 0.0 0.0

6. Net Electrical Energy Generated (MWh) 754,397 4,546,941 131,729,001 E-1

UNIT SHUTDOWNS DOCKET NO: 50-327 UNIT NAME: SQN-1 DATE: August 6, 2002 COMPLETED BY: Renee McKaig TELEPHONE: (423) 843-8963 REPORT PERIOD: JULY 2002 No. Date Type Duration Reason1 Method of Cause and Corrective Action to Prevent Recurrence F:Forced (Hours) Shutting S:Scheduled Down Reactor2 No power reductions of greater than 20 percent during July 2002.

Summary : Unit 1 operated at 100 percent power throughout the month of July with a capacity factor of 98.7 percent. No PORVs or safety valves were challenged in July.

1 2 Reason: Method A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Trip/Scram C-Refueling 3-Automatic Trip/Scram D-Regulatory Restriction 4-ContinuationOutage E-Operator Training / License Examination 5-Other (Explain)

F-Administrative G-Operational Error (Explain)

H- Other (Explain)

E-2

UNIT SHUTDOWNS DOCKET NO: 50-328 UNIT NAME: SQN-2 DATE: August 6, 2002 COMPLETED BY: Renee McKaig TELEPHONE: (423) 843-8963 REPORT PERIOD: JULY 2002 No. Date Type Duration Reason1 Method of Cause and Corrective Action to Prevent Recurrence F:Forced (Hours) Shutting S:Scheduled Down Reactor2 1 020712 F 49.1 A 3 Unit 2 experienced a reactor trip on July 12 at 2223 Eastern Daylight Time (EDT),

resulting from a reactor coolant pump undervoltage condition initiating the reactor trip. The cause of the event was the failure of the alternate feeder breaker for Start Bus 2B to function properly when being returned to its normal configuration. A diagnostic of the breaker is being performed and will be repaired or replace as necessary.

Summary: Unit 2 experienced a reactor trip on July 12 and was returned to service on July 14. Unit 2 capacity factor for July was 91.3 percent. No PORVs or safety valves were challenged in July. A design change has been implemented on Unit 2 increasing the Design Electrical Rating and the Maximum Dependable Capacity.

1 2 Reason: Method A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Trip/Scram C-Refueling 3-Automatic Trip/Scram D-Regulatory Restriction 4-ContinuationOutage E-Operator Training / License Examination 5-Other (Explain)

F-Administrative G-Operational Error (Explain)

H- Other (Explain)

E-3