ML20216F679

Monthly Operating Rept for Mar 1998 for DAEC

ML20216F679
Person / Time
Site:	Duane Arnold
Issue date:	03/31/1998
From:	Vanmiddlesworth, Woodward R WISCONSIN ELECTRIC POWER CO.
To:	Beach A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
GL-97-02, GL-97-2, NG-98-0650, NG-98-650, NUDOCS 9804170166
Download: ML20216F679 (7)

Text

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Duane Amold Energy Center l 3277 DAEC Road Palo, IA 52324 1 Telephone 319 8$17611 1 Fax 319 8517986 UTILITIES April 15,1998 NG 98-0650 Mr. A. Bill Beach Regional Administrator Region 111 U.S. Nuclear Regulatery Conunission 801 Warrenville Road Lisle, IL 60532-4351

Subject:

Duane Arnold Energy Center Docket No: 50-331 Operating License: DPR-49 March 1998 Monthly Operating Report File: A-118d

Dear Mr. Beach:

Please find enclosed the Duane Arnold Energy Center Monthly Operating Report for March 1998. The report has been prepared in accordance with the guidelines of NRC l Generic Letter 97-02: Revised Contents Of The Monthly Operating Report, and l distribution has been made in accordance with DAEC Technical Specifications, Section j 6.1 1.1.c.

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l Very t ly yours, '

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l Gary VanMiddlesworth l Plant Manager-Nuclear GDV/RBW Enclosures k

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9804170166 980331 CN l PDR ADOCK 05000331 jV R PDR 1

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An IE S Industnes Company

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o-Mr. A. Bill Beach >

NG 98-0650 l

April 15,1998 Page 2 of 2 cc:

U.S. Nuclear Regulatory Commission Ms. Lisa Stump Attn: Document Control Desk lowa State Utilities Board Mail Station PI-37 Lucas State Office Building Washington, DC 20555-0001 (Orig.) Des Moines,IA 50319 Ms. Barbara Lewis Dr. William A. Jacobs, Jr.

McGraw-Ilill, Inc. GDS Associates,Inc.

1200 G Street NW, Suite 1100 1850 Parkway Place, Suite 720 l Washington, DC 20005 Marietta, GA 30068-8237 l Mr. Dennis Murdock Mr. Dale Arends l Central lowa Power Cooperative Corn Belt Power Cooperative 1 l Box 2517 130013th Street North ,

Cedar Rapids,IA 52406 Humboldt,IA 50548 l

l Document Control Desk Mr. Al Gutterman l

INPO Records Center Morgan, Lewis, Bockius 700 Galleria Parkway 1800 M St. N W l Atlanta, GA 30339-5957 Washington, DC 20036-5859 l

Mr. Rich Laufer DOCU Project Manager l 1 Whiteflint North NRC Resident Inspector

! Mail Stop 13E21

! 11555 Rockville Pike l Rockville, MD 20852

OPERATING DATA REPORT DOCKET NO: 50-0331 DATE: 04/15/98 Unit: Duane Arnold Enerev Center COMPLFTED BY: Richard Woodward TELEPIIONE: (3191 851-7318 OPERATING STATUS Average Daily Power Level

1. Unit Name: Duane Arnold Enerav Center 500

2. Reporting Period: March 1998 y 400 3.

300 Licensed 7hermal Power (MW th ): 1658 200

4. Nameplate Rating (Gross MW e DER): 565.7 (Turbine) 100

5. Design Electrical Rating (Net MWe DER): 1,3 g 0 1 6 11 16 21 26 31

6. Maximum Dependable Capacity (Gross MW e MDC): 13 Day

7. Maximum Dependable Capacity (Net MW e MDC): M -

8. If Changes Occur in Capacity Ratings (Items Number 3 through 7) since the last report, Give Reasons: Not Anolicable

9. Power Level to Which Restricted, if Any (Net Mw e): March '6 - 31. decreased from 100% to 94% thermal power

10. Reasons for Restrictions,if Any: End of fuel-cycle-15 coast-down l March-98 1998 Cumulative l

11. Ilours in Reporting Period 744.0 2,160.0 203,040.0 l

12. Number of Ilours Reactor Was Critical 744.0 2,160.0 156,926.5 l

13. Reactor Reserve Shutdown flours 0.0 0.0 192.8

14. Ilours Generator On-Line 744.0 2,160.0 153,309.1

15. Unit Reserve Shutdown llours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWil) 1,210,552.8 3,542,558.4 218,248,600.6

17. Gross Electrical Energy Generated (MWil) 411,759.0 1,208,205.0 73,200,891.6

18. Net Electrical Energy Generated (MWil) 388,360.7 1,140,377.2 68,711,465.4

19. Unit Service Factor 100.0 % 100.0 % 75.5 %

20. Unit Availability Factor 100.0 % 100.0 % 75.5 %

21. Unit Capacity Factor (Using MDC Net) 100.4 % 101.5 % 71.2 %

22. Unit Capacity Factor (Using DER Net) 97.0 % 93.1% 68.2%

23. Unit Forced Outage Rate 0.0% 0.0% 9.7%

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

Refueline. April 3.1998 03:55. 45 days

25. If Shutdown at End of Report Period, Estimated Date of Startup: May 17,1998

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO: 50-0331 DATE: 04/15/98 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPilONE: (319) 851 7318 MONTH Marcb1998 Day Avm mly Power Level (MWe Net) 1 536.7 2 534.9 3 534.9 4 534.6 5 536.8 I 536.6 7 533.6 8 510.0 9 535.3 10 532.8 l 11 532.4 12 525.3 13 533.8

, 14 536.9

! 15 534.0 16 532.4 f 17 529.8

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.$27.9 i 19 527.8 20 524.2 l 21 522 x 22 ' i93 23 S17.0 I4 515.8 25 506.0 26 498.9 27 498.0 28 500.I 29 493.0 30 489.1 31 490.9

REFUELING INFORMATION l

l DOCKET NO: 50-0331 DATE: 04/15/98 Unit: Duane Arnold Enemy Center COMPLETED BY: Richard Woodward TELEPIIONE: {3191 851-7318

1. Name of facility. Duane Arnold Enerny Center 1

2. Scheduled date for next refueling shutdown. Anril 2.1998 (actual: April 3.1908. 03:55)

3. Scheduled date for restart following refueling. May 17.1998 l

4. Will refueling or resumption of ope:ation thereafter require a technical specification change l or other license amendment? Les e )

l l

RTS 296 proposes fuel discharge as early as 60 hours6.944444e-4 days <br />0.0167 hours <br />9.920635e-5 weeks <br />2.283e-5 months <br /> after shutdown (versus current 120 hour0.00139 days <br />0.0333 hours <br />1.984127e-4 weeks <br />4.566e-5 months <br /> requirement).  ;

RTS 298 proposes reducing restrictions for Standby Liquid Control System Operability requirements. l RTS 299 proposes allowing performance of Reactor Vessel Hydro without changing reactor mode.  !

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

I RTS 296, " Refueling Operations", approved April 2,1997.

l RTS 298, " Star.dby Liquid Control Operability Requirements", approved March 31,1998.

RTS 299, " Vessel ifydrostatic Pressure and Leak Testing Operability Requirements", approved March 31, l 1998.

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

7. Current and projected fuel assemblies inventory: l Number of Projected date oflast l Fuel refueling that can be discharged l Assemblies (after allowing margin for maintenance of continuous full-core discharge capability)

Installed in reactor core 368 n/a Fresh fuel to be installed into the core during April 1998 refueling . 120 n/a Previously discharged from core to Spent Fuel Storage Pool l 1528 n/a

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Discharged from core to Spent Fuel Storage Pool 1648 n/a following April 1998 refueling Installed Capacity of Spent Fuel Storage Pool [-~2411 2dlit _ _

Licensed Capacity of Spent Fuel Storage Pool (with teracking) 2829 2006 Licensed Capacity of Spent Fuel Storage Pool and Cask Pool (with 3152 2010 reracking)

r-o D3CKET NO: so-0))I l DATE: 04/15/98 Unit: Duane Arnold Enerev Center COMPLETED BY: Richard Woodward TELEPHONE: O 19)851-7318 UNIT SilUTDOWNS AND POWER REDUCTIONS REPORT MONTH: Marchl998 (There were no average daily power reductions >20% during the month.)

No. Date Type Duration Reason Method of Licensee Cause (1) (Hours) (2) Shutting Event Dcwn Reactor Report #

l (3) i i

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 l F-Administrative 9-Other (Explain) ]

G-Operational Error (Explain)

H-Other (Explain) e

)

)

1 l

DOCKET NO.: 50-0331 l DATE: 04/15/98 '

Unit: Duane Arnold Enerav Center COMPLETED BY: Richard Woodward TELEPHONE: O 19) 851-7318 Monthly Operational Overview for March 1998 The DAEC averaged 97.8% capacity, cperating at or near its 1658 MW. full-thermal-power licensed limit, except for the following capacity losses:

e 03/04 01:00 - 05:30, reduced recirculation flow to pull control rods and increase load-line (rod-pull),0.1 FPH,

• 03/07 23:00 - 03/08 03:24, rod-pull, turbine control valve testing, hold at request of load dispatcher,1.0 FPH, e 03/12 01:00 - 13:00, rod-pull,0.6 FPH, e 03/1611:00 (end of full-power capability)- 03/3124:00, Cycle 15 coast down,12.6 FPH, l

At 11:00 on March 16, having fully withdrawn all control rods and operating at full recirculation flow, the reactor reached j the end of full power capability for the current fuel cycle. This commenced the end-of-cycle coast-down in thermal power (12.6 FPH,) that would continue until the shutdown for Refuel Outage 15.

Despite unseasonably warm (70* - 80') daily peak temperatures March 26 - 31, average weather-related gains in output (seasonal boosts related to lower winter-time condenser inlet temperatures) still accounted for 1.3 FPH, of negative losses,.

Metering discrepancy (counted as an efriciency loss) and maintenance of m.,rgin between actual and license-l/m/ted thermal power (1658 MW.) accounted for the residual remaining 3.1 FPH, oflost production. Total losses (netting in the weather-related gains in plant output) equaled 16.1 FPH, out of the available 744 clock-hours during the month.

On April 2 at 14:00, as the plant commenced an orderly shutdown, maximum available reactor power had decreased to 94%.

At 03:55 on April 3, the generator was removed from the grid, and a manual scram was inserted at 05:34. At the end of Cycle 15, the DAEC had continuously operated 201 days, I hour,4 minutes, its sixth longest operational run.

Allocation of Production & Losses: Electrical Capacity Factor Full Power Output  % of 565.7 MWs Equivalent MWe (Design Rating) llours )

(FPHeq)

Actual Metered Net Electric output 522.0 92.3 % 686.5 Acts.J Metered Plant Electric Loads 31.5 5.6% 41.4 Off Ling Capacity Losses: 0.0 0.0% 0.0 On-Line Unplanned Capacity Losses: 0.0 0.0% 0.0 Normal Capacity Losses (Avg.' full Power MWth < 1658) 0.4 0.1% 0.5 On i ine Planned Capacity Losses 1.3 0.2% 1.7 (neg.) Weather losses - condenset pressure <2.75 In Ils / Circ Water Temp < 74.5 "F 1.1 -0.3% .I J Unplanned Effleiency Losses (Weather-Norm-Full-Power-MWe > 565.7 Design) 0.0 0.0% 0.C Metering (Avg indicated powr MWe Avg metered energy MWile) 2.0 0.4% 2.6 Excluded losses (coast-down, lack of grid demand, etc.) 9.3 LI% L2.1 Desige Gross Electric Output MLZ 129,F3 ZiLQ (Dere were no Licensee Event Reports.)

Licensine Action Summary:

Plant Availability: 100.0 % Unplanned Auto Scrams (while/ critical) this month: 0 Number of reportable events: 0 Unple.nned Auto Scrams (while/ critical)last 12 months: 0 Safety Relief Valve Challenges: 0 1