ML20153B414

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Monthly Operating Rept for Aug 1998 for DAEC
ML20153B414
Person / Time
Site: Duane Arnold NextEra Energy icon.png
Issue date: 08/31/1998
From: Woodward R
IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:
Shared Package
ML20153B408 List:
References
NUDOCS 9809230107
Download: ML20153B414 (5)


Text

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OPERATING DATA REPORT DOCKET NO:

50-0331 DATE:

09/15/98 Unit:

Duane Arnold Enerev Center COMPLETED BY:

Richard Woodward TELEPHONE:

(3191 851-7318 OPERATING STATUS Average Daily Power Level 1.

Unit Name: Duane Arnold Enerev Center 500 2.

Reporting Period: Aunust 1998 400 300 3.

Licensed Thermal Power (MW ): 1658

[ 200 th 2

100 4.

Nameplate Rating (Gross MW DER): 565.7 (Turbine) e 0

Design Electrical Rating (Net MW DER): 138 1

6 11 16 21 26 31 e

Day 6.

Maximum Dependable Capacity (Gross MW MDC):_0 e 7. Maximum Dependable Capacity (Net MW MDC):120 e 8, if Changes Occur in Capacity Ratings (ltems Number 3 through 7) since the last report, Give Reasons: Not Applicable 9. Power Level to Which Restricted,if Any (Net MW ):e N/% 10. Reasons for Restrictions,if Any: NM August-98 1998 Cumulative i1. Hours in Reporting Period 744.0 5,831.0 206,711.0 12. Number of Hours Reactor Was Critical 744.0 4,751.8 159,518.3 13. Reictor Reserve Shutdown Hours 0.0 0.0 192.8 14. Hours Generator On-Line 744.0 4,666.2 155,815.3 15. Unit Reserve Shutdown Hours 0.0 0.0 0.0 16. Gross Thermal EnerFv C memted (MWH) 1,231,672.8 7,543,279.2 222,249,321.4 Gmss Electrical EneIgy . ated (MWH) 406,205.0 2,519,604.0 74,512,290.6 i Net Electrical Energy Genermsd (MWH) 383,423.8 2,376,829.1 69,947,917.3 19. Unit Service Factor 100.0 % 80.0 % 75.4 % 20. Unit Availability Factor 100.0 % 80.0 % 75.4 % 21. Unit Capacity Factor (Using MDC Net) 99.1% 78.4 % 71.2 % 22. Unit Capacity Factor (Using DER Net) 95.8 % 75.8 % 68.2 % 23. Unit Forced Outage Rate 0.0% 0.0% 9.5% 24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of each):N!% 25. If Shutdown at End of Report Period, Estimated Date of Startup:N!% 9809230107 980915 PDR ADOCK 05000331 R PDR

..._ _... ~.-.. ~ -.. __.-- - 2 AVERAGE DAILY UNIT POWER LEVEL DOCKET NO: 50-0331 DATE: 09/15/98 ' Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 MONTH August 1998 Day Average Daily l Power Level (MWe-Net) 1 520.1 2 518.8 3 514.7 4 513.2 5 514.0 6 515.4 7 516.5 8 516.0 1 9 515.6 10 521.9 1 11 512.8 12-521.1 i 13 520.6 14 512.3 15 519.5 1 16 498.7 17 514.2 18 514.6 19 511.7 20 509.1 21 513.9 22 513.9 23 511.2 ~- 24 512.8 25 517.4 i 26 518.2 27 514.7 28 514.6 29 519.0 30 519.7 31 519.9 f l' l l

I REFUELING INFORMATION DOCKET NO: 50-0331 DATE: 09/15/98 Unit: Duane Arnold Enerev Center l COMPLETED BY: Richard Woodward l TELEPliONE: (3191 851-7318 1. Name of facility. Duane Arnold Enercy Center 1 2. Scheduled date for nedrefueling shutdown. October 8.1999 3. Scheduled date for restart following refueling. November 13.1999 4. Will refueling or resumption of operation thereafter require a technical specification change or other license amendment? NQ 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 i 7. Current and projected fuel assemblies inventory: Number of Projected date oflast Fuel refueling that can be discharged Assemblies (r.fter allowing margin for maintenance of continuous full-core discharge capability) Installed in reactor core 368 N/A Previously discharged from core to Spent Fuel Storage Pool 1648 N/A Installed Capacity of Spent Fuel Storage Pool 2411 2001 Licensed Capacity of Spent Fuel Storage Pool (with reracking) 2829 2006 Licensed Capacity of Spent Fuel Storage Pool and Cask Pool (with 3152 2010 reracking)

._.4 _m_ _. - u.~ .u_S .m+ _._-_m_ _m .t_.. l DOCKET NO: 50-0331 DATE: 09/15/98 Unit: Duane Arnold Enerny Center COMPLETED BY: Richard Woodward { TELEPHONE: (3191851-7318 (There were no daily average power reductions greater than 20% during the month.) UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH: August 1998 No. Date Type Duration Reason Method of Licensee Cause (1) (Hours) (2) Shutting Event Down Reactor Report # (3) l l 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) l t

,a l DOCKET NO.: 50-0331 l DATE: 09/15/98 Unit: Duane Amold Enerev Center COMPLETED BY: Richard Woodward TELEPHONE: (3191851-7318 Monthly Operational Overview for August 1998 During the month of August, the DAEC operated at its 1658 MW. licensed limit except for the following departures from full power: Allocation of Production and Losser. Electric Capacity Factor Full Power Output % of 565.7 MWe Equivalent l . MWe (Design Rating) Hours (FPH ) Plant Process Computer maintenance (Year 2000 testing: 08/19 21:45 - 0.2 0.0% 0.3 08/20 10:29,08/26 22:02 - 08/27 04:17,08/27 21:29 - 08/28 07:12, 08/30 09:49 - 18:00) Reduced recirculation flow to pull control rods to increase load line (Rod 0.4 0.1% 0.6 Pull),08/15 21:03 - 8/16 03:00 Average Margin to 1658 MW. Limit 0.2 0.0%

0.2 Subtotal

Capacity Loss E 0.8 0.1 % 1.1

  • B' Moisture Separator Reheater Performance Loss 1.2 O.2%

1.6 Feedwater flow measurement nozzle fouling 3.7 0.7% 5.0 Other Losses, as yet unidentified M 0.6% 4J Subtotal: Efficiency Losses 8.4 1.5 % 11.0 [ Weather Losses l 10.4 l 1.9% l 13.8 l l Total Losses l 19.6 l 3.5% l 26.0 l Net Electric Output 515.5 91.1 % 677.8 Plant Electric Loads (while on-line) 30.6 5.4 % 40.2 Total Electric Generation 546.1 96.5 % 718.0 l Design Electric Rating, Total %, Total # of clock-hours l 565.7 l 100.0 % l 744.0 l (There were no Licensee Event Reports during the month.) Licensinn Action Summary: Plant Availability: 100 % Unplanned Auto Scrams (white / 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 i I l}}