NG-99-1226, Monthly Operating Rept for Aug 1999 for Duane Arnold Energy Center.With

Monthly Operating Rept for Aug 1999 for Duane Arnold Energy Center.With

ML20212B418
Person / Time
Site:	Duane Arnold
Issue date:	08/31/1999
From:	Vanmiddlesworth, Woodward R IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:	Dyer J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
GL-97-02, NG-99-1226, NUDOCS 9909200093
Download: ML20212B418 (7)

Text

ALLI ANT g UTILITIES its vuiai.. loc.

IES Utilities El7 DAF,'

Palo,IA 52324-97b5 September 10,1999 Ofnce: 319.851.7611 Fax: 319.851.7986 www.alliantenergy.com NG 99-1226 Mr. James E. Dyer Regional Administrator RegionIII U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle,IL 60532-4351

Subject:

Duane Arnold Energy Center Docket No: 50-331 Operating License: DPR-49 August 1999 Monthly Operating Report File: A-118d

Dear Mr. Dyer:

Please find enclosed the Duane Arnold Energy Center Monthly Operating Report for August 1999. The report has been prepared in accordance with the guidelines of NRC Generic Letter 97-02: Revised Contents Of The Montidy Operating Report, and distribution has been made in accordance with DAEC Technical Specifications, Section 5.6.4.

Very truly yours, l '

Gary VanMiddlesworth Plant Manager-Nuclear GDV/RBW Enclosures 39cl029 wwumne R

y -

l ,

Mr. James E. Dyer NG 99-1226 -

September 10,1999 Page 2 of 2 L

cc:

/U.S. Nuclear Regulatory Commission Ms. Lisa Stump Attn: Document Control Desk Iowa State Utilities Board Mail Station 0-PI-17 _ Lucas State Office Building Washington, DC 20555-0001 (Orig.) Des Moines,IA 50319

. Ms. Barbara Lewis Dr. William A. Jacobs, Jr. f McGraw-Hill,Inc. GDS Associates,Inc.

1200 G Street NW, Suite 1100 1850 Parkway Place, Suite 720 Washington, DC 20005 Marietta, GA 30068-8237 l

Mr. Dennis Murdock Mr. Dale Arends Centrallowa Power Cooperative Corn Belt Power Cooperative l l

Box 2517 130013th Street North Cedar Rapids,IA 52406 Humboldt,IA 50548 Document Control Desk Mr. Al Gutterman INPO Records Center Morgan, Lewis, Bockius l

700 Galleria Parkway 1800 M St. NW Atlanta, GA 30339-5957 Washington, DC 20036-5859 4 Ms. Brenda Mozafari DOCU Project Manager 1 White Flint North NRC Resident Inspector Mail Stop 13D18 11555 Rockville Pike CTS Project Rockville, MD 20852

~

l

. . OPERATING DATA REPORT DOCKET NO: 50-331 DATE: 09/10/99 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (3191 851-7318 OPERATING STATUS

1. Unit Name: Duane Arnold Enercy Center

2. Reporting Period: Aucust 1999 Average Daily Pourlevel

3. Licensed 7hermal Power (MWth): 1658

~

500

4. Nameplate Rating (Gross MWe DER): 565.7 (Turbine) 400 s1 Design Electrical Rating (Net MW 300

5. e DER): j38

6. Maximum Dependable Capacity (Gross MW e MDC): 259 100

7. Maximum Dependable Capacity (Net MW e MDC): f29 2

0

8. If Changes Occur in Capacity Ratings (Items Number 3 01 08 15 22 29 through 7) since the last report, Give Reasons:N_ot Day Aeolicable

9. Power Level to Which Restricted, If Any (Net MW ):e N!%

10. Reasons for Restrictions,if Any: N%

A ugust-99 1999 Cumulative

11. Hours in Reporting Period 744.0 5,831.0 215,471.0

12. Number of Hours Reactor Was Critical 744.0 5,364.0 167,712.9

13. Reactor Reserve Shutdown Hours 0.0 0.0 192.8

14. Hours Generator On-Line 744.0 5,299.I 163,927.3

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (M W H) 1,225,650.6 8,623,792.8 235,471,582.1

17. Gross Electrical Energy Generated (M W H) 410,783.0 2,900,692.0 78,961,018.6

18. Net Electrical Energy Generated (MWH) 387,890.6 2,738,213.3 74,148,458.8

19. Unit Service Factor 100.0 % 90.9 % 76.1 %

20. Unit Availability Factor 100.0 % 90.9 % 76.1 %

21. Unit Capacity Factor (Using M DC Net) 100.3 % 90.3 % 72.3 %

22. Unit Capacity Factor (Using DER Net) 96.9 % 87.3 % 69.3 %

23. Unit Forced Outage Rate 0.0% 0.0% 9.2%

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of each): Refuel. 10/22/99. 36 days

25. If Shutdown at End of Report Period, Estimated Date of Startup: N_M

. . ]

AVERAGE DAILY UNIT POWER LEVEL j DOCKETNO: 50-331 ,

DATE: 09/10/99 Unit: Duane Arnold Enercy Center l COMPLETED BY: Richard Woodward TELEPHONE: (3191851-7318 4

MONTH August 1999 i Day Average Daily l Power Level l (MWe-Ne0 1 467.3  ;

2 522.2 3 527.4 4 521.4 l

5 525.3 6 522.4 7 517.3 8 524.5 l

9 525.5 10 519.2 11 520.9 12 516.0  ;

13 526.0 l

14 530.1  !

15 526.5 16 531.2 17 515.1 18 524.i 19 529.0 20 525.6 21 527.3 22 527.4 23 520.5 24 518.2 25 521.8 26 524.5 27 519.2 "8 503.8 29 524.7 30 530.0 31 527.5 I

v

l REFUELING INFORMATION l

DOCKET NO: 50-331 DATE: 09/10/99 Unit: Duane Arnold Enercy Center COMPLETED BY: Richard Woodward TELEPHONE: (3191 851 7318

1. Name of facility. Duane Arnold Enercy Center

2. Scheduled date for next refueling shutdown. October 22.1999

3. Scheduled date for restart following refueling. November 27.1999

4. Will refueling or resumption of operation thereafter require a technical specification change or other license amendment? Yes - Technical Specification chance to suonort next fuel reload with GE12 fuel desien.

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

l Technical Specification chance for GE12 fuel storace submitted January 22.1999. (Approved June

8. implemented July 16.)

Undated Technical Specification chance for GE12 fuel operation submitted July 16.1999.

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

! design, new operating procedures. See items 4 & 5 above ,

l

7. Current and projected fuel assemblies inventory: 1 I

Number of Projected date oflast Fuel refueling that can be discharged Assemblies (after allowing margin for j maintenance of continuous full-core discharge capability)

I New fuel for Reload 16, j 128 Installed in reactor core i 368 NIA i Previously discharged from core to Spent Fuel Storage Pool l 1648 N/A l Installed Capacity of Spent Fuel Storage Pool l 2411 2001 l Licensed Capacity of Spent Fuel Storage Pool (with reracking) 2829 20_06 Licensed Capacity of Spent Fuel Storage Pool and Cask Pool (with 3152 2010 reracking)

]

DOCKET NO: 50-331 DATE: 09/10/99 l Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (3191 851-7318 UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH: August 1999 No. Date Type Duration Reason Method of Licensee Cause (1) (Hours) (2) Shutting Event Down Reactor Report #

(3) 7 07/31/99 23:00 S 0 B 5 Perform Sequence

- (2.72 FPHeq) Exchange l 08/02/99 01:00 8 08/27/99 23:00 S 0 B 5 Perform Sequence

- (0.76 FPHeq) Exchange 08/28/99 07:35 1 - F: Forced 2 - 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) f I

DOCKET NO.: 50-331 DATE: 09/10/99 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 Monthly Operational Overview for August 1999

'lhe DAEC began the month of August having just reduced power (at 23:00 on July 31") to perform a control rod sequence exchange. Control rod adjustments to change load-line occurred the 2*',6*,17*,24*, and 31" Another sequence exchange was performed August 27* and 28*.

Of the 744 clock-hours during the month of August, DAEC produced the equivalent of 726.15 full-power-hours-equivalent FPH,(Gross Electric Capacity factor: 97.6%). Capacity losses totaled 4.85 FPIly , efficiency losses totaled 0.40 FPII,, and hot weather-related circ-water / condenser / cooling tower losses were 12.60 FPH,.

At the end of August the DAEC had operated 77 days since the last shutdown.

Following is the allocation of production and losses: Electrical Capacity Factor Full Power Output  % of 565.7 MWe Equivalent Hours MWe { Design Rating) (FPHy Reduced recirculation flow to pull control rods to increase load 0.16 0.03 % 0.21 line (Rod Pull): 08/02 22:48 - 08/03 00:00,08/06 22:00 - 08/07 00:00,08/l7 23:00 - 08/18 00:00,08/24 03:48 - 05:42,08/31 00:00 - 09/01 00:00 Power Reduction for PPC and/or Feedwater Flow Correction 0.76 0.13 % l.00 Out of Service: 08/02 01:00 - 14:00,08/07 00:00 - 09:00,08/l1 22:00 -08/12 03:30,08/24 03:48- 05:42 Sequence Exchange 07/3123:00 - 08/02 01:00, 08/27 23:00 - 2.56 0.45 % 3.36 08/28 07:35 Average Margin to 1658 MWth Limit 0.21 0.04 % 0.28 Suhtotal: On-line Capacity Losses 3.69 0.65 % 4.85 On-line Efficiency Losses l 0.30 l 0.05 % l 0.40 l l

Weather Losses i.e., weather gains (turbine exhaust 9.58 1.69 % 12.60 pressure / condenser inlet temperature > design) 13.57 j 2.40 % l 17.85 l l Total On-line Losses l Avg. Net Electric Output (while on-line) 521.33 92.16 % 685.65 Plant Electric Loads (while on-line) 30.79 5.44 % 40.50 Total Electric Generation 552.13 97.60 % 726.15 Off-Line Losses 0.00 0.00 % 0.00 l

Design Electric Rating, Total %, Total # of clock-hours l 565.70 100.00 % 744.00 l l l l (There were no Licensee Event Reports.)

Licensing Action Summary:

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

_ _ - _ - _ _ _ _ _ _ _ _ _ _ _ .