NG-99-1415, Monthly Operating Rept for Sept 1999 for Daec.With

Monthly Operating Rept for Sept 1999 for Daec.With

ML20217E290
Person / Time
Site:	Duane Arnold
Issue date:	09/30/1999
From:	Richard Anderson, Woodward R IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:	Dyer J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NG-99-1415, NUDOCS 9910190160
Download: ML20217E290 (7)

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ALLi A'NT ENERGY. iu mes$ne.

i Duane Arnold Er.ergy Center 3277 DAEC Road October 11,1999_

Office: 3'9.851.7611 I

Fax: 319.811.7986 NG 99-1415 www.m n: enerucorn j 1

Mr. James E. Dyer -

Regional Administrator Region III - ,

j U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, IL 60532-4351 - i l

Subject:

. Duane Arnold Energy Center Docket No: 50-331

' Operating License: DPR-49

. September 1999 Monthly Operating Report File

A-118d-

Dear Mr. Dyer:

Please find enclosed the Duane Arnold Energy Center Monthly Operating Report for September 1999. 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 5.6.4.

Very truly yours, .

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Richard L. Anderson Plant Manager-Nuclear RLA/RBW .

' Enclosures -

quy 9910190160 990930 PDR ADOCK 05000331 R PDR

0 Mr. James E. Dyer NG 99-1415 -

I October 11,1999 Page 2 of 2

cc:

W.S. Nuclear Regulatory Commission Ms. Lisa Stump

, Attn: Document Control Desk Iowa State Utilities Board Mail Station 0-Pl-17 Lucas State Office Building

' Washington, DC 20555-0001 (Orig.) Des Moines,IA 50319 l

Ms. Barbara Lewis Dr. William A. Jacobs, Jr. j McGraw-Hill, Inc. GDS Associates,Inc.

1200 G Street NW, Euite 1100 1850 Parkway Place, Suite 720

- Washington, DC 20005 Marietta, GA 30068-8237 1 Mr. Dennis Murdock Mr. Dale Arends CentralIowa Power Cooperative Corn Belt Power Cooperative i Box 2517 .

130013th Street North J Cedar Rapids,IA 52406 .Humboldt,IA 50548 Document Control Desk Mr. AlGutterman INPO Records Center Morgan, Lewis, Bockius

- 700 Galleria Parkway- 1800 M St.- NW Atlanta, GA 30339-5957 Washington, DC 20036-5859 Ms. Brenda MozafariL DOCU Project Manager .

l White Flint North NRC Resident inspector l Mail Stop 13D18 11555 Rockville Pike CTE Project Rockville, MD 20852 l

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OPERATING DATA REPORT DOCKET NO: 50-331 DATE: 10/11/99 l Unit: Duane Amold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: 1

{3_19) 851-7318

1. Unit Name: Duane Arnold Energy Center l

2. Reporting Period: September 1999 Average Dah Power Level

3. Licensed Thermal Power (MWth): 1658

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4. Nameplate Rating (Gross MWe DER): 565.7 (Turbine) 500 400

5. Design Electrical Rating (Net MW e DER): M8 g ~~ '

$ 300

6. Maximum Dependable Capacity (Gross MWe MDC): 550 g 2 200

7. Maximum Dependable Capacity (Net MW e MDC): 30- 100

3. If C e nges Occur in Capacity Ratings (Items Number 3 0 through 7) since the last report, Give Reasons: N,_ot 01 08 15 22 29 Applicable Day

9. Power Level to Which Restricted, If Any (Net MWe ):  ;

Sept. 9 -13: 50% - 75%, Sept. 22 - 30: 100% to 94% (uniform decrease) I

10. Reasons for Restrictions, if Any: September 9 -13: Cooling Tower Out of Service, September 22 - 30: End-of-Cycle Fuel Coastdown September-99 1999 Cumulative . j 11, Hours in Reporting Period 720.0 6,551.0 216,191.0

12. Number of Hours Reactor Was Critical 720.0 6,084.0 168,432.9

13. Reactor Reserve Shutdown Hours 0.0 0.0 192.8

14. Hours Generator On-Line 720.0 6,019.1 164,647.3 I

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 1,013,515.8 9,637,308.6 236,485,097.9

17. Gross Electrical Energy Generated (MWH) 330,060.0 3,230,752.0 79,291,078.6 18.' Net Electrical Energy Generated (MWH) 310,740.8 3,048,954.1 74,459,199.6

19. Unit Service Factor 100.0 % 91.9 % 76.2 %

20. Unit Availability Factor 100.0 % 91.9 % 76.2 %

21. Unit Capacity Factor (Using MDC Net) 83.0 % 89.5 % 72.3 %

22. Unit Capacity Factor (Using DER Net) 80.2 % 86.5 % 69.3 %

23. Unit Forced Outage Rate 0.0% 0.0% 9.1%

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of each): Refuel, 10/22/99,36 days

25. If Shutdown at End of Report Per:od, Estimat:d Date of Startup: NJ

AVERAGE DAILY UNIT POWER LEVEL

-- . DOCKET NO: 50-33I DATE: 10/11/99

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Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318

- MONTH September 1999 Day Average Daily Power Level l

(MWe-Net) i 1 525.5 2 521.9

l. -3 - 451.2 l 4 246.6 5 295.4 6 328.8 7 302.9 8 263.1 9 331.8 l t

10 346.8 i i I 11 335.0 12 321.6 13 344.8 14 356.6 15 357.9 16 371.0 17 515 3 l'8 521.1 l 19 529.1 20 526.7

< 21 531.9 l . .

22 524.8 23 520.5 24 520.5 25 514.7 26 511,5 27 512.4 28 510.6

, , 29 511.3

$% 30 496.4 l .

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I REFUELING INFORMATION DOCKET NO: 50.331 DATE: 10/11/99 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 J l

1 1.. Name of facility. Duane Arnold Energy Center . j l

2. Scheduled date for next refueling shutdown. October 22.1999

3. Scheduled date for restart following refueling. November 27,1999 i

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4. Will refueling or resumption of operation thereafter require a technical specification change j I

or other license amendment? Yes - Technical Specification change to support next fuel reload with GE12 fuel design.

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

Technical Specification change for GE12 fuel storage submitted January 22,1999. (Approved June

- 8, implemented July 16.)

Updated Technical Specification change for GE12 fuel operation submitted July 16,1999.

6. Important licensing considerations associated with refueling, e.g., new or different fuel design or supplier, unreviewed design or performance anslysis methods, significant changes in fuel design, new operating procedures. See items 4 & 5 above j

- 7. Current and projected fuel assemblies inventory:

I Number of ' Projected date oflast Fuel refueling that can be discharged Assemblies (after allowing margin for maintenance of continuous full-core

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New fuel for Reload 16,- 128 i 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)

DOCKET NO: 50-331 DATE: 10/11/99 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH: September 1999 No. Date Type Duration Reason Method of Licensee Cause (1) (Hours) - (2) Shutting Event Down Reactor Report #

(3) 9 09/03/99 23:00 S 0 B 5 Perform repair on the 3 (111.13 column supports of the l 09/17/99 09:00 FPHeq) distribution header of the j

'A' cooling tower  ;

I - 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 i 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 l

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I; DOCKET NO.: 50-331 I' - DATE: 10/11/99 Unit: Duane Arnold Energy Center

, , COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318

. Monthly Operational Overview for September 1999

~The DAEC began the month of September,467 days into Fuel Cycle 16 and approaching the end of full power capability.

' On September 3, failure of distribution header column supports caused the shutdown of the 'A' cooling tower, limiting MWH production for two weeks in order t.o perform necessary repairs. On the evening of September of 7* power was further reduced to perform maintenance on the 'A' recirculation pump motor-generator set. On September 17 a control rod adjustment was performed to increase load-line, the final control rod was fully withdrawn September 19, and the end-of-full-

. power-capability (coast-down) commenced September 21. On the evening of September of 30* power was reduced to perform scram-titne testing on one control rod drive.

l l . Of the 720 clock-hours during the month of September, DAEC produced the equivalent of $83.40 full-power-hours-

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equivalent FPH,(Gross Electric Capacity factor: 81.0%). Capacity losses totaled 116.62 FPH,, efficiency losses totaled 17.38 FPH,, and hot weather-related circ-water / condenser / cooling tower losses were 2.60 FPH,.

At the end of September the DAEC had operated 107 days since its last shutdown.

Following is Allocation of Production & Losses: Electrical Capacity Factor Full Power Output  % of 565.7 MWe Equivalent Hours MWe (Design Ratin,g) (fee) g i

Reduced recirculation flow to pull control rods to increase load ' O.00 0.00 % 0.00 line (Rod Pull):09/17 12:22 14:15,09/18 21:00 - 23:00 -

Power Reduction for PPC and/or Feedwater flow Correction Out 0.04 0.01 % 0,05 ofService:09/17 0900 12:22 Scram-time testing 09/30 21:33 - 10/0109:00 0.48 0.08 % 0.6I

A" Cooling Tower Out-of Service 09/0316:09 09/17 09:00 87.31 15.43 % 111.13 Coastdown 09/22 -(end of month) 3.73 . 0.66% . 4.75 Average Margin to 1658 MWth Limit 0.05 0.01% 0.07 Subtotal: On-line Capacity Losses 91.62 16.20 % 116.62 Subtotal: On-line Efficiency Losses 13.66 2.41% 17.38

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Weather Losses i.e., weather gains (turbine exhaust 2.04 0.36% . 2.60 pressure / condenser inlet temperature > design) i 18.97 % 136.60 l . TotalOn-line Losses l 107.32 l l l l

Avg. Net Electric Output (while on-line) 431.51 76.28 % 549.20 i l

Plant Electric Loads (while on-line) 26.87 4.75 % 34.20

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Total Electric Generation 458.38 81.03 % 583.40 l

lOff-Line unplanned Losses: 0.00 0.00 % 0.00 l Design Electric Rating, Total % Total # of clock-hours 100.00 % 720.00 l 565.70 l l l-

- (here were no Licensee Event Reports.)

! i Licensing Action Summary:

Plant Availability: 100% ~ Unplanned Auto Scrams (while/ critical) this month: 0 Number of reportable events: 0 Unplanned Auto Scrams (while/ critical) last 12 months: 0 l Main Steam Safety and Relief Valve Challenges: 0 l

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