NG-96-0320, Monthly Operating Rept for Jan 1996 for DAEC

Monthly Operating Rept for Jan 1996 for DAEC

ML20149K864
Person / Time
Site:	Duane Arnold
Issue date:	01/31/1996
From:	Middlesworth G, Woodward R IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NG-96-0320, NG-96-320, NUDOCS 9602220282
Download: ML20149K864 (6)

Text

,

D. anne Amold Enugy Cznter

• 3277 OAEC Road C

e Pa o. IA $2324 Te'eonone 319 8517611 Fax 319 8517611 February 9,1996 NG-96 0320 UTILITIES Mr. Ilubert J. Miller Regional Administrator Region til 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 January 1996 Monthly Operating Report

Dear Mr. Miller:

Please Gnd enclosed the Duane Arnold Energy Center Monthly Operating Report for January 1996. The report has been prepared in accordance with the guidelines of NUREG-0020 and distribution has been made in accordance with DAEC Technical SpeciGcations, Section 6.11.1.c.

Very truly yours, Mf Gary Van Middlesworth Plant Manager, Nuclear GDV/RBW Enclosures File A-Il8d cc:

U.S. Nuclear Regulatory Commission i Mr. Dennis Murdock Attn: Document Control Desk Centrallowa Power Cooperathe Mail Station PI 37 Box 2517 Washington, DC 20555-0001 (Orig.) Cedar Rapids. IA 52406 Mr. Glenn Kelly Dr. William A. Jacobs, Jr.

Project Manager GDS Associates,Inc.

I Whiteflint North Suite 720 Mail Stop 13E21 1850 Parkway Place I1555 Rockville Pike Marietta, GA 30%8-8237 Rockville, MD 20852 Document Control Desk Mr. Dale Arends INPO Records Center Corn belt Power Cooperative 700 Galleria Parkway 130013th Street North Atlanta, GA 30339-5957 Ilumboldt LA 50548 Ms. Lisa Stump DOCU lowa State Utilities Boaro Lucas State Olrice Building NRC Resident inspector Des Moines, IA 50319 i

Mr. Fred Yost Ms. Kathleen Shea Director, Research Services Morgan, Lewis, Bochius ,

Utility Data Institute 1800 M St. N W I 1700 K St. NW, Suite 400 Washington DC 20036-5859 n0008 washin8 en.DC 20006 9602220282 960131 '

pI, PDR ADOCK 05000331 I R PDR An IES Industnes Company

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l OPERATING DATA REPORT DOCKET NO: 50-0331 i DATE: 02/09/96 Unit: Duane Arnold Enerev Center j COMPLETED BY: Richard Woodward

TELEP110NE

(319)851-7318 OPERATING STATUS j Aur4pDilyRarle,d i i i j 1. Unit Name: Duane Arnold Energy Center 4

) 500 j 2. Reporting Period: January 1996  ;

400 1

1 3. Licensed Thermal Power (MW ):th M z E

Z 300

4. Nameplate Rating (Gross MWe DER): 565.7 (Turbine) a  :

is -

2 200

5. Design Electrical Rating (Net MWe DER): 518 j 10 0

6. Maximum Dependable Capacity (Gross MW e MDC): 141 l l  !

0 l l 7. Maximum Dependable Capacity (Net MWe MDC): 520 1 6 11 16 21 25 31 l l

8. If Changes Occur in Capacity Ratings (Items Number 3 through l*

7) since the last report, Give Reasons: &1 Anolicable

9. Power Level to Which Restricted,if Any (Net MWe ): $1 Aeolicable f

10. Reasons for Restrictions, If Any: $1 Acolicable January-96 1996 Cummulative l

i 1. liours in Reporting Period 744.0 744.0 184,080.0

! 12. Number of flours Reactor Was Critical 744.0 744,0 139,269.8 Reactor Reserve Shutdown liours 0.0 0.0 192.8 l 13.

f 14. liours Generator On Line 744.0 744.0 135,857.8 j 15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

. 16. Gross Thermal Energy Generated (MWH) I,176,757.0 1,176,757.0 190,437,971.4

[

17. Gross Electrical Energy Generated (MWil) 402,671.0 402,671.0 63,814,641.6 l l

18. Net Eiectrical Energy Generated (MWH) 379,995.3 379,995.3 59,857,009.9 l

! 19. Unit Service Factor 100.0 % 100.0 % 73.8 %

20. Unit Availability Factor 100.0 % 100.0 % 73.8 %

f )

21. Unit Capacity Factor (Using MDC Net) 98.2 % 98.2 % 68.7 %

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22. Unit Capacity Factor (Using DER Net) 94.9 % 94.9 % 65.7 % 1 l 23. Unit Forced Outage Rate 0.0% 0.0% 10.7 %

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

25. If Shutdown at End of Report Period Estimated Date of Startup: N/A 1

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. AVERAGE DAILY UNIT POWER LEVEL t

', DOCKET NO: 50-0331 DATE: 02/09/96 Unit: Duane Arnold Fnergy Center COMPLETED BY: Richard Woodward TELEPHONE: (3191 851 7318 MONTH January 1996 Duy Average Daily PowerIxvel (MWe-Net)

. 1 539.4 2 539.0 3 538.1 4 539.9 5 539.6

, 6 530.9 7 508.4 j 8 535.8 9 537.6 10 525.6 11 527.6 12 537.6 13 537.5 14 539.9 15 537.4 16 537.3 17 481.9

, 18 192.4 19 207.4 20 497.5 21 534.9 22 537.6 23 536.1 24 538.2 25 537.8 26 536.3 27 537.8 4 28 537.8 29 536.3 30 534.8 31 534.8 I

DOCKET NO: 50-0331 DATE- 01'09N6 .'

Unit: Duane Arnold Encrev Center COMPLETED BY: Richard Woodward -

TELEPHONE: (3191 851-7318 -

UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH: January 1996 No. Date Type Duration Reason Method of Licensee Event System Code Comp. Code Cause (1) (Hours) (2) Shutting Repott # (4) (5)

Down Reactor (3) 1 Jan.17-19 F 0 A 5 n/a AD XPT Auto-trip of the "B" Recirculation Pump MG Set (33.4 full Reactor Transformer power Recirculation Potential hours System equivalent) 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 i F-Administrative 9-Other (Explain) 5 - Exhibit I (Same Source)

( G-Operational Error (Explain) j ll-Other (Explain) l

". REFUELING INFORMATION f

• DOCKET NO: 50-0331 DATE: 02/09/96 Unit: Duane Arnold Enerev Center 4 COMPLETED BY: Richard Woodward TELEPHONE: (3191851-7318

1. Name of facility.

Duane Arnold Energy Center

2. Scheduled date for next refueling shutdown.

Refuel Outage XIV to begin October 10,1996.

3. Actual date for restart following refueling.

November 14,1996

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

Yes RTS 269, T.S. 3.2," Plant Containment Systems" l

RTS 288, T.S. 2.1,3.2," Reactor Water Clean-up Systems Vessel Level Isolation Set-Point Change"

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

RTS 269, submitted December 22,1995 RTS 288, submitted January 18,1995 4

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.

No

7. Current and projected fuel assemblies inventory:

Number of Projected date oflast Fuel refueling that can be Assembli discharged es installed in reactor core (following refueling) 368 n/a 1

previously discharged from core to Spent Fuel Storage 1408 n/a Pool (following refueling) under present physical capacity of Spent Fuel Storage 2411 2007 j Pool under Licensed Capacity of Spent Fuel Storage Pool 3152 2014 l l

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DOCKET NO.: 50-0331 DATE: 02/09/96 Unit: Duane Amold Enerev Center COMPLETED BY: Richard Woodward TELEPHONE: (319)851-7318 Monthly Operational Overview for January 1996:

T1 9AEC operated at full thermal power throughout the month except:

• January 6 - 7, to perform scheduled turbine control valve surveillance testing and a control rod sequence exchange,1.5 full power-hours lost.

. January 10 11, to backseat Outboard HPCI Steam Supply Valve M02239 to repair a small packing leak,1.0 full-power hours lost. (A power reduction was required to allow personnel entry into steam tunnel.)

• January 17 - 20, for an auto-trip of the "B" Recirculation Pump MG Set,33.4 full-power-hours lost.

Total forgone production (including other small planned losses) was the equivalent of 39.9 full-power hours of operation.

Allocation of Production & Losses: Electncal Capacity Factor Full Power Output  % of 565.7 MWe Equivaleni MWe (Design Gross Ilours Rating)

Actual Metered Net Electnc output 510.7 90.3 % 671.7 30.5 5.6% 40.1 Actual Metered Plant Electric Loads Load Following 0.0 00% 0.0 0.0 0.0% 0.0 oft Line

(-) Weather losses, ie., condenser pressure < 2.75 in IIg / Circ Water Temp < 74.5 'F -5.3 -0.9% -7.1 Planned Capacity Losses: Turbine Control Valve Testing Seq. Exchange 1/6-7 1.2 0.2% 1.5 0.0 0.0% 0.0 Control Rod Drive Exercises Unplanned Capacity Loss: "B" Recire Pump MG Set Trip 1/17 20 26.2 4.6% 34.4 Normal Capacity Losses (Avg MWth < 1658) 0.2 0.0% 0.3 Metering Losses (Avg indic MWe Avg MWIIe) 2.4 0.4% 3.2 Emciency Losses (Weather Norm-Full-Power MWe < 565.7) -0.1 0.0% -0.1 Design Gross Electric Output 565 7 100 0 % 7440 At 1953 January 17, the 'B' Recirculation MG Set tripped. The 'B' Reactor Feed Pump and 'B' Condensate Pump were secured at 2217. Prompt operator response resulted in a relatively smooth transient. Immediate and followup actions were completed and the plant stablized at 39% power. Initialinvestigation revealed the MG Set tripped on exciter field undervoltage.

The 'B' Recirc MG Set was re-started January 19 around 2130. Prior to the MG Set being restarted a number of replacement, and in some cases upgraded, parts were installed in exciter rectification and voltage regulator circuitry. New brushes were also installed and the slip rings cleaned. Power was increased to 100% January 20 and 21.

Maintaining adequate cooling tower circulation water temperature during cold weather with only one of two recirculation loops caused some difficulties. The cooling tower fans were shut-off the evening of January 18 to achieve temperature control. This also helped reduce ice accumulation on the towers.

At 1816 on February 1, the DAEC exceeded its previous best continuous operating run record: 240 days,14 hours1.62037e-4 days <br />0.00389 hours <br />2.314815e-5 weeks <br />5.327e-6 months <br />,41 minutes.

There were no Licensee Event Reports.

Licensino Action Summary:

Plant Availability: 100.0 % Unplanned Auto Scrams (while/ critical) this month: 0 Number of reportable events: 0 Unplanned Auto Scrams (while/ critical)last 12 months: 1