ML20134Q237

Monthly Operating Rept for Jan 1997 for Duane Arnold Energy Center

ML20134Q237
Person / Time
Site:	Duane Arnold
Issue date:	01/31/1997
From:	Middlesworth G, Woodward R IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:	Beach A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NG-97-0308, NG-97-308, NUDOCS 9702260334
Download: ML20134Q237 (7)

Text

. Duane Amold Energy Center l a

3277 DAEC Road Palo, IA S2324

, , Telephone 319 8517E11 Fax 319 8517611 i

UTILITIES February 14,1997 NG-97-0308 Mr. A. Bill Beach Regional Administrator Region 111 U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, IL 60532-4351

Subject:

Duane Amold Energy Center Docket No: 50-331 Operating License: DPR-49 )

January 1997 Monthly Operating Report File: A-118d

Dear Mr. Beach:

Please find enclosed the Duane Arnold Energy Center Monthly Operating Report for January 1997. The report has been prepared in accordance with the guidelines of NUREG-0020 and distribution has been made in accordance with DAEC Technical Specifications, Section 6.11.1.c. i Very truly yours,

.x 4<#

axl I Gary VanMiddlesworth Plant Manager-Nuclear GDV/RBW Enclosures i

& I 9702260334 970131 PDR ADOCK 05000331 R PDR 2G001e An IES Industnes Company

4 Mr.' A. Bill Beach NG-97-0308 1 February 14,1997 Page 2 of 2 l cc:

U.S. Nuclear Regulatory Commission Ms. Lisa S: ump Attn: Document Control Desk Iowa State Utilities Board  :

Mail Station PI-37 Lucas State OfTice Building' Washington, DC 20555-0001 (Orig.) Des Moines,IA 50319 '

Mr. Fred Yost Dr. William A. Jacobs, Jr. .

i Director, Research Services GDS Associates,Inc. '

Utility Data Institute Suite 720 '

1700 K St. NW, Suite 400 1850 Parkway Place Washington, DC 20006 Marietta, GA 30068-8237

$ Mr. Dennis Murdock Mr. Dale Arends  ;

CentralIowa Power Cooperative Corn Belt Power Cooperative '!

i Brn: 2517 130013th Street North j Cedar Rapids,IA 52406 Humboldt,IA 50548 4

Document Control Desk Mr. Al Gutterman

^ INPO Records Center Morgan, Lewis, Bockius 700 Galleria Parkway 1800 M St. N W j

i. Atlanta, GA 30339-5957 Washington, DC 20036-5859 Mr. Glenn Kelly DOCU

} Project Manager

. 1 Whiteflint North NRC Resident Inspector )

Mail Stop 13E21 i 11555 Rockville Pike l Rockville, MD 20852 l

I 1

= ,-. -

OPERATING DATA REPORT i

DOCKET NO: 50-0331 f DATE: 02/14/97 1

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 Cenigt 500 i

g 400

2. Reporting Period: January 1997 l:

Z i 3.

Licensed Thermal Power (Mwth) IM E

ig l 4. Nameplate Rating (Gross MWe DER)

565.7 (Turbine) 2 100

5. Design Electrical Rating (Net MW e DER): 531 4

0

6. Maximum Dependable Capacity (Grass MW e MDC): 110 1 6 11 16 21 26 31

Day i

7. Maximum Dependable Capacity (Net MW e MDC): 520 L l

i

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

9. Power Level to Which Restricted, If Any (Net Mw e ): E l l 10. Reasons for Restrictions, if Any: N/A l

l January-97 1997 Cummutative

+ 11. Hours in Reporting Period 744.0 744.0 192,864.0

12. Number of Hours Reactor Was Critical 639.9 639.9 147,134.0 j 13. Reactor Reserve Shutdown Hours 0.0 0.0 192.8

14. Hours Generator On-Line 610.4 610.4 143,631.5 1 15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 963,166.8 963,166.8 202,616,277.9

17. Gross Electrical Energy Generated (MWH) 327,470.0 327,470.0 67,916,516.6 l 13. Net Electrical Energy Generated (MWH) 308,831.7 308,831.7 63,724,390.7 f 19. Unit Service Factor 82.0 % 82.0 % 74.5 %

i 20. Unit Availability Factor 82.0 % 82.0 % 74.5 %

4 21. Unit Capacity Factor (Using MDC Net) 79.8 % 79.8 % 69.6 %

i 22. Unit Capacity Factor (Using DER Net) 77.2 % 77.2 % 66.7 %

23. Unit Forced Outage Rate 18.0 % 18.0 % 10.3 %

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

- 11.1997: four days

25. If Shutdown at End of Report Period, Estimated Date of Startup: MM 4

i i

i

1 AVERAGE DAILY UNIT POWER LEVEL DOCKET NO: 50-0331 J

DATE: 02/14/97 Unit: Duane Arnold Enerev Center COMPLETED BY: Richard Woodward TELEPHONE: (3191 851-7318 l

MONTH January 1997 Day Average Daily PowerIrvel (MWe-Net) 1 538.5 2 537.4 3 536.8 4 535.8 5 540.9 2

6 535.8 7 542.1 8 537.0 i 9 534.4 10 531.9 11  %.8 12 0.0 l 13 0.0  !

14 0.0 15 0.0 16 0.0 17 76.0 l 18 351.7 19 511.5 20 539.4 21 535.2 22 538.3 23 539.6 24 538.6 25 536.8 26 542.0 27 539.4 28 538.7 29 539.8 30 540.6 31 532.9

REFUELING INFORMATION DOCKET NO: 50-0331

) . -

DATE: 02/14/97 Unit: Duane Arnold Enerev Center COMPLETED BY: Richard Woodward TELEPHONE: (3191 851-7318 1

1. Name of facility.

t

. Duane Arnold Energy Center

2. Scheduled date for next refueling shutdown.

March 1998 I i 1

3. Scheduled date for restart following refueling. l April 1998 l

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

No i 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 onerating procedures.

N/A

7. Current and projected fuel assemblies inventory:

Number of Fuel Projected date oflast Assemblies refueling 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 Storage Pool (with reracking) 2829 2006 Licensed Capacity of Spent Fuel Storage Pool and Cask Pool 3152 2010 (with reracking) 1 1

DOCKETNO: 50-0331 DATE: 02/14/97 , ,

Unit: Duane Arnold Enerev Center .

COMPLETED BY: Richard Woodward TELEPIIONE: (319)851-7318 UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH: January 1997 i

No. . Date Type Duration Reason Method of Licensee Event System Code Comp. Code Cause (1) (Hours) (2) Shutting Report # (4) (5)

Down Reactor (3) 1 January Il- F 133.7 B 1 n/a BO ISV Body-to-bonnet leak in a 3/4" manual isolation valve in the 17 (Residual Heat (Isolation Residual Heat Removal System required plant to go into Removal Valve) cold shutdown to repair System) 1 - F: Forced 2 - Reason 3 - Method: 4 - Exhibit G- Instructions for S: Scheduled A-Equipment Failure (Explain) 1-Manual Preparation of Data Entry B-Maintenance or Test 2-Manual Scram Sheets for Licensee Event C-Refueling 3-Automatic Scram Report (LER) File (NUREG-D-Regulatory Restriction 4-Continued 0161)

E-Operator Training & License Examination 5-Reduced Load F-Administrative 9-Other (Explain) 5 - Exhibit 1 (Same Source)

G-Operational Error (Explain)

H-Other(Explain)

1 1

1 DOCKET NO.: 50-0331 l DATE: 02/14/97 l Unit: Duane Arnold Enerev Center COMPLETED BY: Richard Woodward i l

TELEPilONE: (319)851-7318 l

Monthly Operational Overview for January 1997:

The plant began the month operating at full power. j Testing of the "A" and "B" Standby Gas Treatment System filters performed on January 8 and 10,1997, resulted in a brief l Limiting Condition for Operation in each case due to the need for refurbishment of the charcoal. At the end of the month i

these events were being evaluated for 10 CFR 50.73 reportability. A Licensee Event Report was also in preparation for an i issue relating to Main Steam Line Radiation Monitor setpoints. (LER 97-01, pending).

Due to an increasing trend in unidentified drywell leakage, the plant commenced a voluntary planned shutdown on January 11 to investigate. The generator was taken offline at 1542. At the start of the month, the leakage had been 0.4 gpm, and at  ;

the time of the shutdown it was above 0.8 gpm. The Technical Specification limit is 5.0 gpm. A body-to-bonnet leak in a l 3/4" manual isolation valve in the Residual Heat Removal System was subsequently discovered. Repairs required the plant l to proceed to cold shutdown condition, and the valve was subsequently replaced. Plant stanup commenced the morning of ,

February 16, and the generator was placed on the grid at 0521 on February 17, and full power operation soon resumed. The plant was offline for 133 hours0.00154 days <br />0.0369 hours <br />2.199074e-4 weeks <br />5.06065e-5 months <br />,39 minutes.

) I Leakage at a Feed Pump discharge check valve prompted the plant to initiate a downpower late on January 31. The pump was subsequently removed from service in February, and the valve repaired.

Allocation of Production & Losses: Electncal capacity Factor Full Power Output *6 of 565.7 MWe Equivalent MWe (Design Gross llours Rating)

Actual Metered Net Electric Output 415.1 73.5 % 545.9 Actual Metered Plant Electric Loads 25.1 4.4% 32.9 Excluded losses: (Load Following or Coast Down): 0.0 0.0% 0.0 Off-Line 1/11 1542 1/17 0521 (Drywell Leakage) 101.6 18.0% 133.7 Unplanned On-Line Capacity Losses: 0.0 0.0% 0.0 (Negative) Weather losses, ie., gains - condenser pressure <2.75 In lig / Cire Water Temp < 74.5 'F -2.2 -0.4% -2.8 Planned On-Line Capacity Losses: ramp-down & start-up 25.1 4.4% 33.0 Normal Capacity Losses (Avg MWth < 1658) 0.2 0.0% O.3 Metering Losses (Avg indic MWe - Avg MWile) 2.0 0.4% 2.6 (Negative) Efliciency Losses, i.e., gains:

Weather-Norm-Full-Power MWe > 565.7 Design .L2 -0.2% .Lf1 Design Gross Electric Output 3 100 0% 7440 Licensing Action Summary:

Plant Availability: 82.0 % Unplanned Auto Scrams (while/ critical) this month: 0 Number of reportable events: 1 Unplanned Auto Scrams (while/ critical)last 12 months: 0