NG-02-0926, September 2002 Monthly Operating Report for Duane Arnold

September 2002 Monthly Operating Report for Duane Arnold

ML022960335
Person / Time
Site:	Duane Arnold
Issue date:	10/15/2002
From:	Bjorseth J Nuclear Management Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
GL-97-002, NG-02-0926
Download: ML022960335 (8)

Text

Duane Arnold Energy Center 3277 DAEC Road Palo, IA52324-9785 Committed to Nuclear Excellence Operated by Nuclear ManagementCompany, LLC October 15, 2002 NG-02-0926 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station 0-Pl-17 Washington, DC 20555-0001

Subject:

Duane Arnold Energy Center Docket No: 50-331 Operating License: DPR-49 September 2002 Monthly Operating Report File: A-118d Please find enclosed the Duane Arnold Energy Center Monthly Operating Report. The report has been prepared in accordance with the guidelines of NRC Generic Letter 97-02: Revised Contents Of The Monthly Operating Report, and distribution has been made in accordance with DAEC Technical Specifications, Section 5.6.4.

Very truly yours,

/o7/

Jo Bj eth Plant Manager-Nuclear JKB/RBW Enclosures

. - . * - ~.- , - *r~t-

October 15, 2002 NG-02-0926 Page 2 of 2 cc:

Mr. James E. Dyer Ms. Lisa Stump Regional Administrator, Region III Iowa State Utilities Board U.S.N*ule-air R&,ulit6ry Commis~son-ný-ý Luca Sitte- Office Building-..

801 Warrenville Road Des Moines, IA 50319 Lisle, IL 60532-4351 Ms. Barbara Lewis Dr. William A. Jacobs, Jr.

McGraw-Hill, Inc. GDS Associates, Inc.

1200 G Street NW, Suite 1100 1850 Parkway Place, Suite 720 Washington, DC 20005 Marietta, GA 30068-8237 Mr. Dennis Murdock Mr. Dale Arends Central Iowa Power Cooperative Corn Belt Power Cooperative Box 2517 1300 13th Street North Cedar Rapids, IA 52406 Humboldt, IA 50548 Document Control Desk Mr. Al Gutterman INPO Records Center Morgan Lewis 700 Galleria Parkway 1111 Pennsylvania Avenue, NW Atlanta, GA 30339-5957 Washington, DC 20004 Mr. Dal Hoo-d DOCU 1 White Flint North Mail Stop 8H4A NRC Resident Inspector 11555 Rockville Pike Rockville, MD 20852 CTS Project

OPERATING DATA REPORT DOCKET NO. 50-331 DATE: 10-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 OPERATING STATUS

1. Unit Name: Duane Arnold Energy Center Average Daily Net Power Level

2. Reporting Period: September 2002

3. Licensed Thermal Power (MWth): 1912 Tech Spec. Amendment243 and TSCR for extended power uprate-n "w--as implemented November 7, 2001 Currentoperating thermal power, as limited by balance-of-plantequipment, is 1790

4. Nameplate Rating (Gross MWe DER): 676 425 Currentrated output, adjustedfor as-built balance-of-plant conditions is .614 0.

5. Design Electrical Rating (Net MWe DER): 581.4 6 Maximum Dependable Capacity (Gross MWe MDC): 593.1 01_

7 Maximum Dependable Capacity (Net MWe MDC): 565.5 0 0

0

8. If Changes Occur in Capacity Ratings (Items Number 3 through 7) since the last report, give reasons- N/A

9. Power Level to Which Restricted, If Any (Net MWe): N/A

10. Reasons for Restrictions, If Any: N/A Sep-02 2002 Cumulative

11. Hours in Reporting Period 720.0 6,551.0 242,495.0 12.-. Number of Hours Reactor Was Critical .. -.. 575.5 6,056.2 - 1-192,036.8

13. Reactor Reserve Shutdown Hours 0.0 0.0 192.8

14. Hours Generator On-Line 523.5 5,939.4 187,864.3

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MVWH) 832,632.5 10,318,655.9 274,817,285.7

17. Gross Electrical Energy Generated (MWH) 273,512.0 3,509,803.0 92,244,020.6

18. Net Electrical Energy Generated (MWH) 258,427.5 3,321,831.8 86,697,457.8

19. Unit Service Factor 72.7% 90.7% 77.5%

20. Unit Availability Factor 73.0% 90.7% 77.5%

21. Unit Capacity Factor (Using MDC Net) 63.5% 90.0% 70.4%

22. Unit Capacity Factor (Using DER Net) 61.7% 87.5% 68 3%

23. Unit Forced Outage Rate 0.0% 2.4% 8.4%

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of each): Refueling, March 24, 2003, 22 days

25. If Shutdown at End of Report Period, Estimated Date of Startup: N/A

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-331 DATE: 10-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 MONTH September 2002 Day Average Daily Power Level (MWe-Net) 1 0 2 0 3 0 4 0

- I -

---

5 0 6 0 7 0 8 0 9 124 10 277 11 351 12 348 13 338 14 340 15 384 16 572 17 570 18 564 19 564 20 573 21 581 22 581 23 584 24 585 25 579 26 577 27 575 28 571 29 566 30 563

1. N/A #N/A

REFUELING INFORMATION DOCKETNO: 50-331 DATE: 10-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318

1. Name of facility. Duane Arnold Energy Center

2. Scheduled date for next refueling shutdown. March 24, 2003

3. Scheduled date for restart following refueling. April 15, 2003

4. Will refueling or resumption of operation thereafter require a technical specification change Sor other license amendment?-No .

5. Scheduled date(s) for submitting proposed licensing action and supporting information. N/A

6. Important licensing considerations associated with refueling, e.g., new or different fuel design or supplier, unreviewed design or performance analysis methods, significant changes in fuel design, new operating procedures. N/A

7. Current fuel assemblies inventory_

Number of Projected date of last Fuel refueling that can be Assemblies discharged (after allowing margin for maintenance of continuous full-core S.. ...... -dIscharge capabI.I Installed into reactor core 368 Discharged from core to Spent Fuel Storage Pool 1912 Scheduled for transfer to Dry Fuel Storage November 2003 610 Installed capacit of Spent Fuel Storage Pool 2411 - 2008 Licensed capaci!y of Spent Fuel Storage Pool (with re-racking) 2829 2014 Licensed capacity of Spent Fuel Storage Pool and Cask Pool (with 3152 reracking) I

DOCKETNO: 50-331 DATE: 10-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH: September 2002 No. Date Type Duration Reason Method of Licensee Cause (1) (Hours) (2) Shutting Event Down Reactor Report #

(3) 8 09/01-09 S 196.53 B 4 2002-003 Identify and repair (268.08 .......-

- -source-of-drywell Effective-Full- leakage; repair RCIC Power-Hours) Lube Oil System; Repair support columns on "B" Cooling Tower

- F: Forced - Reason 3 - Method:

S: Scheduled A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Scram C-Refueling 3-Automatic Scram D-Regulatory Restriction 4-Continued E-Operator Training & License Examination 5-Reduced Load F-Administrative 9-Other (Explain)

G-Operational Error (Explain)

H-Other (Explain)

DOCKET NO.: 50-331 DATE: 10-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 Monthly Operational Overview for September 2002 The DAEC was shutdown at the beginning of September, having been taken off-line August 30'h at 05:57 to perform repairs on drywell coolers. The coolers had exhibited an increasing rate of leakage since August 20th. The timing of the outage had been set to utilize a window of reduced grid demand during the long holiday weekend. Startup following the cooler repairs commenced at 10:59 September 1st and the reactor was taken critical at 12:35 September 1st.

Also during August, on the 2l1t, following planned post-maintenance testing of Reactor Core Isolation Cooling (RCIG) relief-valves,-a-low oil pressure -alarm-wa-s-rec--iv*e-d *----d-RCIC was declared inoperable.

It was subsequently determined that entrapped air in the lube oil system had resulted in an oil system leak. System piping and orifices were inspected, and a vent cap was installed on the outboard turbine bearing housing, but subsequent operation of the RCIC turbine revealed that the lube oil problem had not been corrected. Troubleshooting continued during the (unrelated) plant shutdown that had begun August 30th to repair the drywell coolers.

On September 2 nd at 21:00, continued RCIC lube oil problems prompted plant management to halt the startup following the drywell cooler repair. A manual scram was inserted at 22:05 from 8% power, without the generator having been synchronized to the grid. The reactor shutdown commenced an unplanned extension of the planned drywell leakage outage. On September 6th and 7th, the RCIC Main Lube Oil Pump Discharge Relief Valve was replaced, the RCIC Turbine Steam Supply Drain Trap repair was completed, and a new 3 inch equalizing header was installed. These modifications tested satisfactorily on September 7th, RCIC was declared operable, and reactor startup recommenced. (LER#

2002-003, pending.)

On September 8th at 10:33, the reactor was taken critical, and the generator synchronized to the grid on September 9 th at 04:32. Power ascension was held to approximately 65% (limited by condenser vacuum) from September 10 at 06:35 until 17:00 on September 15 th because the "B" Cooling Tower had been removed from service to perform repairs on three damaged columns supporting the distribution header. Following restoration of the cooling tower to service on September 15 th, full power was achieved on September 1 6 th at 05:45.

Except for three brief (less than one hour) power reductions to 85% on the 16 th, 1 7 th, and 2 2nd to adjust control rods, the DAEC operated at full thermal power throughout the remainder of the month.

DOCKET NO.: 50-331 DATE: 10-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 Following is the allocation of production and losses: Electrical Capacity Factor Full Power Hours Output  % of 614 MWe Equivalent MWe (Target Output) (FPHeq)

Net Electric Output 358.94 58.46% 420.89 Plant Hou se Loads (wh ivIle on-line) +2 0.32 +3.31%, 23.85 Subtotal: Gross Electric Output 379.27 61.77% : 444.74-Capacity Losses (departures from full thermal power): - 23.62- 3.85% 27.70 Rampup from Drywellleakage-Repair 09/09 04:32 - 09/11 00.00 & 09/15 16.30 - 09/16 05:45 CRD Adjustments 09/16 09.00 - 09.50, 09/17 00:00 - 01:00 & 0.04 0.01% 0.05 09/22 00:20 - 01:14 Cooling Tower Unplanned Outage Extension i 37.39 6.09% 43.85 09/11 00.00 -09/15 16:30  :

Maintain Margin to 1790 Administrative MWth Limit 0.24 1 0.04% 0.28 Efficiency Losses (occur even at full thermal power): 1.14 0 18% 1.36 Unidentified (residual)

-/+Seasonal Effects (i.e., hot weather decrease) 4 67 0 76% 5.49 Subtotal: On-line Losses (Capacity, Efficiency, and i 67.10 10.93% 78.73 Off-Line Losses 54.65 8.90% 64.06 Drywe11 Leakage Repair 09/01 00:00 09/02 22:05 & 09108 10:33 - 09/09 04:32 __,__ __

RCIC unplanned extension: 09102,22:05 - 09/0810:33 1112.98 18.40% i 132.47 Total: Target Electric Out.put.` %. -# of clokh-liouris 1 100_00%_,_2 Licensing Action Summary:

Plant Availability: 73% Unplanned Auto Scrams (while critical) this month: 0 Number of reportable events: 1 Unplanned Auto Scrams (while critical) last 12 months: 0 Main Steam Safety/Relief Valve Challenges this month: 0

Text

Duane Arnold Energy Center 3277 DAEC Road Palo, IA52324-9785 Committed to Nuclear Excellence Operated by Nuclear ManagementCompany, LLC October 15, 2002 NG-02-0926 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station 0-Pl-17 Washington, DC 20555-0001

Subject:

Duane Arnold Energy Center Docket No: 50-331 Operating License: DPR-49 September 2002 Monthly Operating Report File: A-118d Please find enclosed the Duane Arnold Energy Center Monthly Operating Report. The report has been prepared in accordance with the guidelines of NRC Generic Letter 97-02: Revised Contents Of The Monthly Operating Report, and distribution has been made in accordance with DAEC Technical Specifications, Section 5.6.4.

Very truly yours,

/o7/

Jo Bj eth Plant Manager-Nuclear JKB/RBW Enclosures

. - . * - ~.- , - *r~t-

October 15, 2002 NG-02-0926 Page 2 of 2 cc:

Mr. James E. Dyer Ms. Lisa Stump Regional Administrator, Region III Iowa State Utilities Board U.S.N*ule-air R&,ulit6ry Commis~son-ný-ý Luca Sitte- Office Building-..

801 Warrenville Road Des Moines, IA 50319 Lisle, IL 60532-4351 Ms. Barbara Lewis Dr. William A. Jacobs, Jr.

McGraw-Hill, Inc. GDS Associates, Inc.

1200 G Street NW, Suite 1100 1850 Parkway Place, Suite 720 Washington, DC 20005 Marietta, GA 30068-8237 Mr. Dennis Murdock Mr. Dale Arends Central Iowa Power Cooperative Corn Belt Power Cooperative Box 2517 1300 13th Street North Cedar Rapids, IA 52406 Humboldt, IA 50548 Document Control Desk Mr. Al Gutterman INPO Records Center Morgan Lewis 700 Galleria Parkway 1111 Pennsylvania Avenue, NW Atlanta, GA 30339-5957 Washington, DC 20004 Mr. Dal Hoo-d DOCU 1 White Flint North Mail Stop 8H4A NRC Resident Inspector 11555 Rockville Pike Rockville, MD 20852 CTS Project

OPERATING DATA REPORT DOCKET NO. 50-331 DATE: 10-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 OPERATING STATUS

1. Unit Name: Duane Arnold Energy Center Average Daily Net Power Level

2. Reporting Period: September 2002

3. Licensed Thermal Power (MWth): 1912 Tech Spec. Amendment243 and TSCR for extended power uprate-n "w--as implemented November 7, 2001 Currentoperating thermal power, as limited by balance-of-plantequipment, is 1790

4. Nameplate Rating (Gross MWe DER): 676 425 Currentrated output, adjustedfor as-built balance-of-plant conditions is .614 0.

5. Design Electrical Rating (Net MWe DER): 581.4 6 Maximum Dependable Capacity (Gross MWe MDC): 593.1 01_

7 Maximum Dependable Capacity (Net MWe MDC): 565.5 0 0

0

8. If Changes Occur in Capacity Ratings (Items Number 3 through 7) since the last report, give reasons- N/A

9. Power Level to Which Restricted, If Any (Net MWe): N/A

10. Reasons for Restrictions, If Any: N/A Sep-02 2002 Cumulative

11. Hours in Reporting Period 720.0 6,551.0 242,495.0 12.-. Number of Hours Reactor Was Critical .. -.. 575.5 6,056.2 - 1-192,036.8

13. Reactor Reserve Shutdown Hours 0.0 0.0 192.8

14. Hours Generator On-Line 523.5 5,939.4 187,864.3

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MVWH) 832,632.5 10,318,655.9 274,817,285.7

17. Gross Electrical Energy Generated (MWH) 273,512.0 3,509,803.0 92,244,020.6

18. Net Electrical Energy Generated (MWH) 258,427.5 3,321,831.8 86,697,457.8

19. Unit Service Factor 72.7% 90.7% 77.5%

20. Unit Availability Factor 73.0% 90.7% 77.5%

21. Unit Capacity Factor (Using MDC Net) 63.5% 90.0% 70.4%

22. Unit Capacity Factor (Using DER Net) 61.7% 87.5% 68 3%

23. Unit Forced Outage Rate 0.0% 2.4% 8.4%

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of each): Refueling, March 24, 2003, 22 days

25. If Shutdown at End of Report Period, Estimated Date of Startup: N/A

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-331 DATE: 10-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 MONTH September 2002 Day Average Daily Power Level (MWe-Net) 1 0 2 0 3 0 4 0

- I -

---

5 0 6 0 7 0 8 0 9 124 10 277 11 351 12 348 13 338 14 340 15 384 16 572 17 570 18 564 19 564 20 573 21 581 22 581 23 584 24 585 25 579 26 577 27 575 28 571 29 566 30 563

1. N/A #N/A

REFUELING INFORMATION DOCKETNO: 50-331 DATE: 10-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318

1. Name of facility. Duane Arnold Energy Center

2. Scheduled date for next refueling shutdown. March 24, 2003

3. Scheduled date for restart following refueling. April 15, 2003

4. Will refueling or resumption of operation thereafter require a technical specification change Sor other license amendment?-No .

5. Scheduled date(s) for submitting proposed licensing action and supporting information. N/A

6. Important licensing considerations associated with refueling, e.g., new or different fuel design or supplier, unreviewed design or performance analysis methods, significant changes in fuel design, new operating procedures. N/A

7. Current fuel assemblies inventory_

Number of Projected date of last Fuel refueling that can be Assemblies discharged (after allowing margin for maintenance of continuous full-core S.. ...... -dIscharge capabI.I Installed into reactor core 368 Discharged from core to Spent Fuel Storage Pool 1912 Scheduled for transfer to Dry Fuel Storage November 2003 610 Installed capacit of Spent Fuel Storage Pool 2411 - 2008 Licensed capaci!y of Spent Fuel Storage Pool (with re-racking) 2829 2014 Licensed capacity of Spent Fuel Storage Pool and Cask Pool (with 3152 reracking) I

DOCKETNO: 50-331 DATE: 10-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH: September 2002 No. Date Type Duration Reason Method of Licensee Cause (1) (Hours) (2) Shutting Event Down Reactor Report #

(3) 8 09/01-09 S 196.53 B 4 2002-003 Identify and repair (268.08 .......-

- -source-of-drywell Effective-Full- leakage; repair RCIC Power-Hours) Lube Oil System; Repair support columns on "B" Cooling Tower

- F: Forced - Reason 3 - Method:

S: Scheduled A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Scram C-Refueling 3-Automatic Scram D-Regulatory Restriction 4-Continued E-Operator Training & License Examination 5-Reduced Load F-Administrative 9-Other (Explain)

G-Operational Error (Explain)

H-Other (Explain)

DOCKET NO.: 50-331 DATE: 10-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 Monthly Operational Overview for September 2002 The DAEC was shutdown at the beginning of September, having been taken off-line August 30'h at 05:57 to perform repairs on drywell coolers. The coolers had exhibited an increasing rate of leakage since August 20th. The timing of the outage had been set to utilize a window of reduced grid demand during the long holiday weekend. Startup following the cooler repairs commenced at 10:59 September 1st and the reactor was taken critical at 12:35 September 1st.

Also during August, on the 2l1t, following planned post-maintenance testing of Reactor Core Isolation Cooling (RCIG) relief-valves,-a-low oil pressure -alarm-wa-s-rec--iv*e-d *----d-RCIC was declared inoperable.

It was subsequently determined that entrapped air in the lube oil system had resulted in an oil system leak. System piping and orifices were inspected, and a vent cap was installed on the outboard turbine bearing housing, but subsequent operation of the RCIC turbine revealed that the lube oil problem had not been corrected. Troubleshooting continued during the (unrelated) plant shutdown that had begun August 30th to repair the drywell coolers.

On September 2 nd at 21:00, continued RCIC lube oil problems prompted plant management to halt the startup following the drywell cooler repair. A manual scram was inserted at 22:05 from 8% power, without the generator having been synchronized to the grid. The reactor shutdown commenced an unplanned extension of the planned drywell leakage outage. On September 6th and 7th, the RCIC Main Lube Oil Pump Discharge Relief Valve was replaced, the RCIC Turbine Steam Supply Drain Trap repair was completed, and a new 3 inch equalizing header was installed. These modifications tested satisfactorily on September 7th, RCIC was declared operable, and reactor startup recommenced. (LER#

2002-003, pending.)

On September 8th at 10:33, the reactor was taken critical, and the generator synchronized to the grid on September 9 th at 04:32. Power ascension was held to approximately 65% (limited by condenser vacuum) from September 10 at 06:35 until 17:00 on September 15 th because the "B" Cooling Tower had been removed from service to perform repairs on three damaged columns supporting the distribution header. Following restoration of the cooling tower to service on September 15 th, full power was achieved on September 1 6 th at 05:45.

Except for three brief (less than one hour) power reductions to 85% on the 16 th, 1 7 th, and 2 2nd to adjust control rods, the DAEC operated at full thermal power throughout the remainder of the month.

DOCKET NO.: 50-331 DATE: 10-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 Following is the allocation of production and losses: Electrical Capacity Factor Full Power Hours Output  % of 614 MWe Equivalent MWe (Target Output) (FPHeq)

Net Electric Output 358.94 58.46% 420.89 Plant Hou se Loads (wh ivIle on-line) +2 0.32 +3.31%, 23.85 Subtotal: Gross Electric Output 379.27 61.77% : 444.74-Capacity Losses (departures from full thermal power): - 23.62- 3.85% 27.70 Rampup from Drywellleakage-Repair 09/09 04:32 - 09/11 00.00 & 09/15 16.30 - 09/16 05:45 CRD Adjustments 09/16 09.00 - 09.50, 09/17 00:00 - 01:00 & 0.04 0.01% 0.05 09/22 00:20 - 01:14 Cooling Tower Unplanned Outage Extension i 37.39 6.09% 43.85 09/11 00.00 -09/15 16:30  :

Maintain Margin to 1790 Administrative MWth Limit 0.24 1 0.04% 0.28 Efficiency Losses (occur even at full thermal power): 1.14 0 18% 1.36 Unidentified (residual)

-/+Seasonal Effects (i.e., hot weather decrease) 4 67 0 76% 5.49 Subtotal: On-line Losses (Capacity, Efficiency, and i 67.10 10.93% 78.73 Off-Line Losses 54.65 8.90% 64.06 Drywe11 Leakage Repair 09/01 00:00 09/02 22:05 & 09108 10:33 - 09/09 04:32 __,__ __

RCIC unplanned extension: 09102,22:05 - 09/0810:33 1112.98 18.40% i 132.47 Total: Target Electric Out.put.` %. -# of clokh-liouris 1 100_00%_,_2 Licensing Action Summary:

Plant Availability: 73% Unplanned Auto Scrams (while critical) this month: 0 Number of reportable events: 1 Unplanned Auto Scrams (while critical) last 12 months: 0 Main Steam Safety/Relief Valve Challenges this month: 0