Text

July 2002 Monthly Operating Report for Duane Arnold Energy Center
	ML022350412
Person / Time
Site:	Duane Arnold
Issue date:	08/15/2002
From:	Bjorseth J; Nuclear Management Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	GL-97-002, NG-02-0698
	Download: ML022350412 (7)
	v • d • e

I Duane Arnold Energy Center 3277 DAEC Road Palo, IA52324-9785 Committed to NuclearExcellec Operated by Nuclear Management Company,LLC August 15, 2002 NG-02-0698 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station 0-P 1-17 Washington, DC 20555-0001

Subject:

Duane Arnold Energy Center Docket No: 50-331 Operating License: DPR-49 July 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, Plant Manager-Nuclear JKB/RBW Enclosures

August 15, 2002 NG-02-0698 Page 2 of 2 cc:

Mr. James E. Dyer Ms. Lisa Stump Regional Administrator, Region 1111 Iowa State Utilities Board U.S. Nuclear Regulatory Commission Lucas State 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 JNPO Records Center Morgan Lewis 700 Galleria Parkway 1111 Pennsylvania Avenue, NW Atlanta, GA 30339-5957 Washington, DC 20004 "Mr.-Dirl-Hoo-d D OCU -... . ....

1 White Flint North Mail Stop 8H4A NRC Resident Inspector 11555 Rockville Pike Rockville, MD 20852 CTS Project

I**.at OPERATING DATA REPORT DOCKET NO: 50-331 DATE: 08-15-2002 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: July 2002

3. Licensed Thermal Power (MWth): 1912 600 Tech Spec. Amendment 243 and TSCR for extended power uprate

- -- was implemented November 7,-2001. -Currentoperatingthermal power, as limited by balance-of-plantequipment, is 1790.

4. Nameplate Rating (Gross MWe DER): 676 425 Currentratedoutput, 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 00 o*

0 Nq

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

0

2N 0 o0 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, IfAny: N/A Jul-02 2002 Cumulative

11. Hours in Reporting Period 744.0 5,087.0 241,031.0 12.- NumberofHours-Reactor Was Critical- - - --...- 744 0 - -4,903.7 190,884 3

13. Reactor Reserve Shutdown Hours 0.0 0.0 192.8

14. Hours Generator On-Line 744.0 4,862.8 186,787.7

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 1,323,9849 8,539,621.5 273,038,251.3

17. Gross Electrical Energy Generated (MW H) 444,221.0 2,919,111.0 91,653,328.6

18. Net Electrical Energy Generated (MWH) 420,340.2 2,763,727.9 86,139,353.9

19. Unit Service Factor 100.0% 95.6% 77.4%

20 Unit Availability Factor 100.0% 95.6% 77.4%

21. Unit Capacity Factor (Using MDC Net) 99.9% 96.5% 69.5%

22 Unit Capacity Factor (Usmg DER Net) 97.2% 93.9% 67.1%

23 Unit Forced Outage Rate 0.0% 0.0% 8.4%

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of each): N/A

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

AVERAGE DAILY U POWER LEVEL DOCKET NO: 50-331 DATE: 08-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 MONTH July 2002 Day Average Daily Power Level (MWe-Net) 1 569 2 568 3 566 4 568 5 566 6 574 7 567 8 559 9 565 10 572 11 576 12 579 13 557 14 498 15 575 16 574 17 569 18 567 19 564 20 556 21 559 22 567

. -- 576 -

24 577 25 570 26 569 27 565 28 559 29 568 30 564 31 554

REFUELING INFORMATION DOCKET NO: 50-331 DATE: 08-15-2002 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. Spring 2003

3. Scheduled date for restart following refueling. Spring 2003

4. Will refueling or resumption of operation thereafter require a technical specification change

_-or other-Jicense 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

........ __ _ _-_ .. _ _discharge cSapI-bili)_

Installed into reactor core 368 Discharged from core to Spent Fuel Storage Pool 1912 Scheduled for transfer to Dry Fuel Storage November 2003 610 - i-0-08 Installed capacity of Spent Fuel Storage Pool 2411 2008 Licensed capacityof Spent Fuel Storage Pool (with re-racking) 2829 2014 Licensed capacity of Spent Fuel Storage Pool and Cask Pool (with 3152 reracking)__

DOCKETNO: 50-331 DATE: 08-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH: July 2002 No. Date Type Duration Reason Method of Licensee Cause (1) (Hours) (2) Shutting Event Down Reactor Report #

_________ (3) ______ ____________

6 7/13 - 14/2002 S 0 B 5 Sequence Exchange (3.80 Effective

.Full:Powier- ....

Hours)

- L .1. L I I L 1 - 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: 08-15-2002 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 Monthly Operational Overview for July 2002 At the beginning of July, the DAEC had continuously operated thirty-seven days.

On July 13th between 21:02 and midnight, operators reduced power from 1790 to 1030 MWth to perform a sequence exchange. Operators began increasing power at 03:30, and full power was achieved at 14:15 on July 14'h.

Power was reduced to 1692 MWth on July 15'h from 00:37 to 01:34 to adjust load line.

Power was reduced to 1700 MWth on July 16 th from 04:31 to 05:37 for a control rod adjustment.

On July 20d' at 17:13, operators reduced power to 1765 MWth for three hours when main condenser back pressure increased due to near record high wet-bulb temperatures.-At 20:00,-following a-drop in ambient temperaturethe-condenger backpressure decreased, and full-power was restored.

The DAEC operated continuously at full-power for the remainder of the month.

Following is the allocation of production and losses: Electrical - Capacity Factor Full Power Output % of 614 MWe Equivalent MWe (Target Output) Hours (FPHeq)

NetE Electric Ou~tp _u~t 564.94 92.01% 684.59' Plant House _Loads (while on-line) +32.11 +5.23% -38.90 Subtotal: Gross Electric Output 597.05 . 97.24% - 723.49

-o-- -u- ------ h--------- -------.----.--.------.-.. --.......---- - ------------

Capacity Losses (departures from full thermal power):

Sequence Exchange 7/13 21:02 - 7/14 14:15 3.14 0.51% 3.80 CRD Adjustments 7/15 00:37 - 01:34 & 7/16 04:3 1 - 05:37 0.02 . .0.00% 0.02 High Condenser Back Pressure 7/20 17:13 - 20:35 0.12 0.02% 0.14 Maintain Margin to 1790 Administrative MWth Limit I 0.34 . 0.06% 0 41 Efficiency Losses (occur even at full thermal power): j Unidentified (residual) t . 24)'

0-2-(0 (.0_4) -- (030)

-/+ Seasonal Effects ( i.e., hot weather decrease) 13.57 2.21% 16.44 n-line Losses (Capacity, Efficiency, and Weather):

Su-b-t-otal: O--- . 16.95 . 2.76% 20.51 S------

Off-7Line tosses:(none -. 001 no,- 0.00% j 0.00.

[Total: Tartyet Electric Output, % # of clock-hours 14.00lhIw10D-iD 6.~ -. 4.0:

On July 9th, the Containment Atmosphere Dilution (CAD) system Nitrogen Storage Inventory indication went below the Technical Specification (TS) minimum limit of 67,000 scf. The operator then re-pressurized the system to above the TS limit.

Subsequent investigation found that a surveillance, previously performed that day, had left CAD nitrogen inventory near the 67,000 scf limit. The functional check of the CAD system had used a portion of the CAD nitrogen inventory by actually flowing nitrogen through a test rig. There were no actual safety consequences nor was there any impact on public health and safety as a result of this event. The event was reported under 50.72 (b)(3)(v)(D). (Event Notification#39049).

Licensing Action Summary:

Plant Availability: 100% Unplanned Auto Scrams (while critical) this month: 0 Number of reportable events: I Unplanned Auto Scrams (while critical) last 12 months: 0 Main Steam Safety/Relief Valve Challenges this month: 0