ML20210V185

Monthly Operating Rept for Aug 1997 for DAEC

ML20210V185
Person / Time
Site:	Duane Arnold
Issue date:	08/31/1997
From:	Vanmiddlesworth, Woodward R ILLINOIS POWER CO.
To:	Beach A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
GL-97-02, GL-97-2, NG-97-1613, NUDOCS 9709230142
Download: ML20210V185 (6)

Text

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, Duane Amold Energy Cent:r 3277 DAEC Road Palo, IA $2324 Telephone 219 8517611 Fax 319 8517611 UTILITIES September 15,1997 NG-97-1613 Mr. A. Bill Beach Regional Administrator Region III 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 1997 Monthly Operating Report File: A-ll8d

Dear Mr. Beach:

Please find enclosed the Duaae Arnold Energy Center Monthly Operating Report for August 1997. 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 6.11.1.c.

Very truly yours, l bm Gary VanMidd:esworth

/

Plant Manager-Nuclear ;I

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Mr. A. Bill Beach NG-97-1613 September 15,1997 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 j

Ms. Barbara Lewis Dr. William A. Jrcobs, Jr. ~

McGraw-Hill,Inc. GDS Associates,Inc.

1200 G Street NW, Suite 1100 1850 Parkway PSce, Suite 720 Wasidngton, DC 20005 Marietta, GA 30068-8237 -

Mr. Dennis Murdock Mr. Dale Arends CentralIowa Power Cooperative Corn Belt Power Cooperat've Box 2517 130013th Street North Cedar Rapids,IA 524% Humboldt, IA 5')S48 Document Control Desk Mr. Al Gutteiman INPO Records Center Morgan, Lewis. Bockias 700 Galleria Parkway 1800 M St. NW Atlanta, GA 30339-5957 Washington, DC 20036-5859 Mr. Gler.n Kelly DOCU Project Manager 1 Whiteflint North NRC ResidentInspector Mail Stop 13E21 11555 Rockville Pike Rockville, MD 20852 I

OPriRATING DATA REPORT DOCKET NO: 50-0331 DATE: 09/15/97 Unit: Duane Arnold Enercy Center COMPLETED BY: Richard Woodward TELEPilONE: (319) 851 7318 OPERATING STATUS Average Daily Power Level

1. Unit Name: Duane Amold Energy Center 500

$' 400

2. Reporting Period: August 1997 -~

300 ~

$ 200

3. Licensed 1hermal Power (MWth): 1658 2 100

4. Nameplate Rating (Gross MWe DER): 565.7 (Turbine) 1 6 11 16 21 26 31

5. Design Electrical Rating (Net MW, DER): J38 Day

6. Maximiun Dependable Capacity (Gross MW e MDC): 21Q

7. Maximum Dependable Capacity (Net MW, MDC): 17Q

8. If Changes Occur in Cs.; acity Ratings (Items 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: F.!%

August-97 1997 Cumulative i1. liours in Reporting Period 744.0 5,831.0 197,951.0

+

I2. Number ofl{ours Reactor Was Critical 639.0 5,437.3 151,931.4

13. Reactor Reserve Shutdown Hours 0.0 0.0 192.8

14.  !!ours Generator On-Line 617.b 5,304.7 148,325.8

15. Unit Reserve Shutdown Houra 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWil) 975,794.4 3,461,539.9 210,114,651.0

17. Gross Electrical Energy Generated (MWil) 319,374.0 2,843,982.0 70,433,028.6

18. det Electrical Energy Generated (MWH) 301,570.1 2,683,183.5 66,098,742.5

19. Unit Service Factor 83.0 % 91.0 % 74.9 %

20. Unit Availability Factor 83.0 % 91.0 % 74.9 %

21. Unit Capacity Factor (Using MDC E)" 77.9 % 88.5 % 70.3 %

22. Unit Capacity Factor (Using DER 1 T 75.3 % 855 % 67.4 %

23. Unit Forced Outage Rate 0.0% 0.0%

9.9%l 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 UNIT POWER LEVEL >

DOCKET NO: 50-0331 l .

DATE: 09/15/97 l

Unit: Duane Arnold Energy Center l

COMPLETED BY: Richard Woodward TELEPHONE: (319) 85173J.88 MONTli August 1997 Day Average Daily PowerImel (MWe-Net) 1 521.9 2 516.7 3 5152 4 517.2 5 525.4

.6 524.4 7 523.7 8 5223 9 518.6 10 476.0 11 519.6 12 520.8 13 522.2 14 520.2 15 516.9 16 513.1 17 519.6 18 522.9 4

19 5233 20 5183 21 5223 22 5193 23 80.8 24 0.0 25 0.0 26 0.0 27 0.0 28 0.0 29 147.0 30 410.4 31 516.5

i- REFUELING INFORMATION y . DOCKET NO: 50-0331

,,,, DATE: 09/15/97 Unit: Duane Arnold Enerev Center COMPLETED BY: Richard Woodward TELEPilONE: (319) 851 7318

1. Name of facility.

Duane Amold Energy Center

2. Scheduled date for next refueling shutd- .

April 2,1998

3. Scheduled date for restart following refueling.

May 1998

4. Will refueling or resumption of operrtion thereafter require a technical specification change or other license amendment?

No. (Improved Technical Specifications (ITS) approval needed for refueling outage planning.)

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

N/A. (ITS submitted October 30,1996.)

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 operaung procedures.

N/A

7. Current and projected fuel assemblies inventory:

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

Installed in reactor core (following refueling) 368 n/a Discharged from core to Spent Fuel Storage Pool 1528 n/a Installed Capacity of Spent Fuel Storage Pool 2411 2001 _

Licensed Capacity of Spent Fuel Stt+ age Pool (with reracking) 2829 2006 Licensed Capacity of Spent Fuel Storage Pool and Cask Pool 3152 2010 (with reracking) i

4 .

4 s

DOCKET NO.: 50-0331 DATE: 09/15/97 Unit: Duane Arnoid Enerev Center COMPLETED BY: Richard We_lwan!

TELEPHONE: (319) 85 L-lhji Monthly Operational Overview for August 1997:

'lhe plant operated at licensed thermal power throughout the month except:

e 8/6 20:30-21:30, 8/l123:00-24:00, & 8/31 10:15 11:05: to reduce recirculation flow for (ontrol rod withdrawals, 0.2 Full-Power-Hours equivalent (FPH,)

8/9 22:00 - 8/10 23:00; to perform Turbine Valve & Main Steam isolation Valve (MSIV) Testing,2.2 FPil y e

8/20 09:45-16:30: HPCI Testing 0.1 FPH, 8/22 22:00 - 8/2313:01: Reduce power in preparation for shutdown to repair condenser tube leak,6.4 FPH, 8/2313:01 - 8/2819:13: Shutdown,126.2 FPH,

• 8/2819:13 - 8/3100:00: Startup,25.2 FPH y e 8/01 - 8/31: routine weather, capacity and efficiency losses,15.0 FPHg.

Allocatios of Production & Losses: Electncal Capacity I actor Full Power Output  % of 561.7 MWe Equivalent MWe (Design Rating) llours Actual Metered Net Electric output 404.8 71.7% 532.4 Actual Metered Plant Electric Loads 25.3 4.5% 33.3 Excluded losses: 0.0 0.0% 0.0 Off.Line: Repair Condenser Tube Leak 8/2313:01 8/2819:13 96 0 17.0 % 126.2 Unplanned On-Line Capacity Losses:

Ramp-down: 8/22 22:00 8/2313:01 Start up: 8/2819:13 8/3100:00 24.0 4.1% 31.6 Weather losses - condenser pressure >2.75 la IIg / Circ Water Temp > 74.5 'F 5.5 0.9% 7.2 Normal Capacity Lasses ( Avg.* Full Power

• MWth < 1658) 0.3 0,1% 0.4 Other Planned On-Line Capacity Losses:

8/6 20:30-21:30,8/l123:00-24:00, & 8/31 10:15-11:05: AJjust Load tJne 8/9 22:00 8/1023:00: Turb Valve & MSIV Testing 8/20 09.45 16:30:IIPCI Testing 2.3 0.4% 3JD Metering 1. asses (Avg indic MWe . Avg MWile) 1.3 0.2% 1.7 Efficiency Losses (Weniher Norm-Full-Power MWe > 565.7 Design) 62 1.1% 8.2 Design Gross Electric Output 565 7 100 0% 7440 At 0746 on August 14,1997, Primary Containment Isolation System (PCIS) Group 2 and Group 4 alarms were received, indicating isolation of the outboard valves for Diywell Floor and Equipment Drain Sumps and Shutdown Cooling System.

Initial investigation found a PCIS fuse blown. Operations declared a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> Limiting Condition for Operation (LCO) per Technical Specifications (TS) 3.6.C.4 for the inoperability of the drywell floor and equipment drain sumps. Maintenance personnel investigated and found that a failed PCIS relay coil had caused the blown fuse. They replaced the failed relay coil,

, and the drywell floor and equipment drain system was thereby reestablished, and the LCO exited. The total duration of this event was approximately 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> and within TS requirements. This failed relay (a CR120A model) had been in service, in the normally-energized state, for approximately 23 years. It is believed that the failure is age-related, and that degradation had escalated rapidly since the previous thermography inspection . To preclude further system interruptions, coil replacement of the remaining 16 normally energized CR120A relay coils is scheduled to be accomplished by startup from Refuel Outage 15, projected for May 1998. (LER #97-10).

Licensine Action Summary:

Plant Availability: 83.0 % Unplanned Auto Scrams (while/ critical) this month: 0 Number of reportable events: 1 Unplanned Auto Scrams (while/ critical)last 12 months: 0

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