0CAN010402, December 2003 Monthly Operating Report for Arkansas Nuclear One, Units 1 and 2

December 2003 Monthly Operating Report for Arkansas Nuclear One, Units 1 and 2

ML040200167
Person / Time
Site:	Arkansas Nuclear
Issue date:	01/15/2004
From:	Ashley G Entergy Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
0CAN010402
Download: ML040200167 (4)

Text

Entergy Operations, Inc.

Entergy 1448 S.R. 333 Russellville, AR 72802 Tel 501858 5000 OCAN010402 January 15, 2004 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001

Subject:

Monthly Operating Report Arkansas Nuclear One - Units 1 and 2 Docket Nos. 50-313 and 50-368 License Nos. DPR-51 and NPF-6

Dear Sir of Madam:

Arkansas Nuclear One (ANO), Units 1 and 2 Technical Specifications 5.6.4 and 6.9.1.6, respectively, require the submittal of a Monthly Operating Report. The purpose of this letter is to complete the reporting requirement for December 2003.

There are no new commitments contained in this submittal.

Sincerely, Glenn R. Ashley Manager, Licensing GRA/SLP Attachment(s)

OCAN010402 Page 2 cc: Dr. Bruce S. Mallett Regional Administrator U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 NRC Senior Resident Inspector Arkansas Nuclear One P.O. Box 310 London, AR 72847 U. S. Nuclear Regulatory Commission Attn: Mr. Thomas Alexion Mail Stop 0-7 D1 Washington, DC 20555-0001

a _

OPERATING DATA REPORT DOCKET NO. 50-313 UNIT NAME Arkansas Nuclear One - Unit I DATE January 15, 2004 COMPLETED BY Steven L. Coffman TELEPHONE (479) 858-5560 REPORTING PERIOD: December 2003

1. Design Electrical Rating (MWe-Net): 850

2. Maximum Dependable Capacity (MWe-Net): 836 MONTH YR-TO-DATE CUMULATIVE

3. Number of Hours Reactor Was Critical 527.4 8,131.3 200,572.9

4. Number of Hours Generator On-Line 485.3 8,050.9 197,816.7

5. Unit Reserve Shutdown Hours 0.0 0.0 817.5

6. Net Electrical Energy Generated (MWh) 412,979 6,794,295 152,614,632 UNIT SHUTDOWNS Method Type of Cause & Corrective F: Forced Duration Shutting Action No. Date S: Scheduled (Hours) Reason' Down Comments 2003-02 031201 F 258.7 A 4 Unit shut down due to Main Transformer problems.

SUMMARY

The Unit began the month in a continued forced shutdown to replace 2 of the 3 Main Transformers. The Unit was tied back to the grid on 12/11/2003 and achieved full power on 12/12/2003. On 12/26/2003, power was reduced to 93% to recover from a heater drain tank high level dump failure. The Unit was returned to full power that same day, and operated at full power for the remainder of the month.

I 2 Reason: Method:

A Equipment Failure (Explain) I Manual B Maintenance or Test 2 Manual Trip/Scram C Refueling 3 Automatic Trip/Scram D Regulatory Restriction 4 Continuation E Operator Training & License Examination 5 Other (Explain)

F Administration G Operational Error (Explain)

H Other (Explain)

OPERATING DATA REPORT DOCKET NO. 50-368 UNIT NAME Arkansas Nuclear One - Unit 2 DATE January 15, 2004 COMPLETED BY Steven L. Coffman TELEPHONE (479) 858-5560 REPORTING PERIOD: December 2003

1. Design Electrical Rating (MWe-Net): 912

2. Maximum Dependable Capacity (MWe-Net): 858 MONTH YR-TO-DATE CUMULATIVE

3. Number of Hours Reactor Was Critical 639.2 8,182.9 170,056.8

4. Number of Hours Generator On-Line 634.6 8,157.6 167,499.0

5. Unit Reserve Shutdown Hours 0.0 0.0 0.0

6. Net Electrical Energy Generated (MWh) 632,183 7,925,725.0 144,115,986 UNIT SHUTDOWNS Method Type of Cause & Corrective F: Forced Duration Shutting Action No. Date S: Scheduled (Hours) Reason' Down 2 Comments 2003-03 031224 F 109.4 A 1 Unit manually taken off line due to condenser boot seal I failure.

SUMMARY

The Unit began the month at full power. On 12/24/2003, the unit was manually taken off line due to a failure of the Main Condenser boot seal. After repairs, the Unit was tied to the grid on 12/29/2003 and achieved full power on 12/30/2003. Subsequently on 12/30/2003, power was reduced to 81% because of an electro-hydraulic fluid leak on one of the Main Feedwater Pump control valves. The affected Main Feedwater Pump was secured, and after repairs, the Unit was returned to full power on 12/31/2003.

1 2 Reason: Method:

A Equipment Failure (Explain) I Manual B Maintenance or Test 2 Manual Trip/Scram C Refueling 3 Automatic Trip/Scram D Regulatory Restriction 4 Continuation E Operator Training & License Examination 5 Other (Explain)

F Administration G Operational Error (Explain)

H Other (Explain)