NG-99-0330, Monthly Operating Rept for Feb 1999 for Daec.With

Monthly Operating Rept for Feb 1999 for Daec.With

ML20207K892
Person / Time
Site:	Duane Arnold
Issue date:	02/28/1999
From:	Vanmiddlesworth, Woodward R IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:	Dyer J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
GL-97-02, GL-97-2, NG-99-0330, NG-99-330, NUDOCS 9903170301
Download: ML20207K892 (7)

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IES Utilities ElEAEc$o.7 Palo. l A 52324-9785 March 10,1999 oriic.: 3i9 83i.voii Fax:319.851.79tt6 s www.alhant energy com NG 99-0330 Mr. James E. Dyer i Regional Administrator i Region 111 f U.S. Nuclear Regulatory Commission 801 Warrenville Road I Lisle,IL 60532-4351 i

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Subject:

Duane Arnold Energy Center Docket No: 50-331 Operating License: DPR-49 l February 1999 Monthly Operating Report  ;

File: A-118d )

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Dear Mr. Dyer:

Please find enclosed the Duane Arnold Energy Center Monthly Operating Report for February 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 7

accordance with DAEC Technical Specifications, Section 5.6.4.

Very truly yours,

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• j Ga lanMiddlesworth Plant Manager-Nuclear J2

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GDV/RBW

! l Enclosures

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9903170301 990228 PDR ADOCK 05000331 R PDR 17003I )

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.- Mr. James E. Dyer NG 99-0330 March 10,1999 Page 2 of 2 cc:

/U.S. Nuclear Regulatory Commission Ms. Lisa Stump Attn: Document Control Desk lowa State Utilities Boa'd 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.

McGraw-Hill, Inc. GDS Associates,Inc.

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1200 G Street NW, Suite 1100 1850 Parkway Place,3uite 720 Washingwn, DC 20005 Marietta, GA 30068-8237 Mr. Dennis Murdock Mr. Dale Arends Centrallowa Power Cooperative Corn Belt Power Cooperative Box 2517 130013th Street North Cedar Rapids,IA 52406 Humboldt,IA 50548 Document Control Desk Mr. Al Gutterman l INPO Records Center Morgan, Lewis, Bockius 700 Galleria Parkway 1800 M St. NW Atlanta, GA 30339-5957 Washington, DC 20036-5859 Ms. Brenda Mozafari DOCU Projec^. Manager 1 White Flint North NRC Resident Inspector Mail Stop 13E21 11555 Rockville Pike CTS Project Rockville, MD 20852 1

OPERATING DATA REPORT DOCKET NO: 50-0331 DATE: 03/10/99 Unit: Duane Arnold Enerav Center COMPLETED BY: Richard Woodward TELEPilONE: Ql91851-7318 OPERATING STATUS l

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1. Unit Name: Duane Arnold Enerev Center

2. Reporting Period: February 6999 9 Average Daily Power level

3. Licensed Thermal Power (MWth): 1658 '

500

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

5. Design Electrical Rating (Net MWe DER): 538 f300

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6. Maximum Dependable Capacity (Gross MW e MDC): M.0 6 e

200

7. Maximum Dependable Capacity (Net MW e MDC): 520 100 0

8. If Changes Occur in Capacity Ratirgs (items Number 3 through 7) since the last report, Give Reasons: Not 01 06 11 16 21 26 Atmlicable l Day 1

9. Power Level to Which Restricted, If Any (Net MWe): N!%

10. Reasons for Restrictions, if Any: N/A i

Febru ary-99 1999 Cu mulative  ;

11. Hours in Reporting Period 672.0 1,416.0 211,056.0 i

12. Numberof Hours Reactor Was Critical 672.0 1,416.0 163,764.8

13. Reactor Reserve Shutdown Hours 0.0 0.0 0.0

14. Hours Generator On-Lme 672.0 1,416.0 160,044.2

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 1,107,874.2 2,322,681.0 229,170,470.3

17. Gross Electrical Energy Generated (MWH) 376,706.0 788,512.0 76,848,838.6

18. Net Electrical Energy Generated (M W H) 355,817.9 744,863.0 72,155,108.5

19. Unit Service Factor 100.0 % 100.0 % 75.8 %

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20. Utsit Availability Factor 100.0 % 100.0 % 75.8 %

21. Unit Capacity Factor (Using MDC Net) 101.8 % 101.2 % 71.8 %

22. Unit Capacity Factor (Using DER Net) 98.4 % 97.8 % 68.9 %

23. Unit Forced Outage Rate 0.0% 0.0% 9.4%

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 DATE: 03/10/99 Unit: Duane Arnold Enetcy Center COMPLETED BY: Richard Woodward TELEPliONE: (319) 851-7318 MONTH February 1999 Day Average Daily Power Leiel (KiWe-Net) 1 532.4 2 534.5 3 528.4 4 533.9 5 531.3 6 533.5 7 533.3 8 530.4 9 516.1; 10 527.8 11 529.2 12 531.9 13 537.8 14 530.0 15 534.9 16 528.7 17 534.0 18 535.1 19 535.1-20 534.1 l 21 468 2 22 532.0 23 532.6 24 534.9 25 532.9 26 531.7 27 529.8l 28 531.2

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, REFUELING INFORMATION DOCKET NO: 50-0331 DATE: 03/10/99 Unit: Duane Amold Enerny Center COMPLETED BY: Richard Woodward TELEPHONE: (3191 851-7318

1. Name of facility. Duane Arnold Enercy Center

2. Scheduled date for next refueling shutdown. October 8.1999 1

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3. Scheduled date for restart following refueling. November 13.1999

4. Wili refueling or resumption of operation thereafter require a technical specification change or other license amendment? Yes - Technical Specification chance to support next fuel reload with GE12 fuel desien.

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l S. Scheduled date(s) for submitting proposed licensing action and supporting information. l Technical Specification chance for GE12 fuel storace submitted January 22.1999. l l

Technical Specification chance for GE12 fuel operation will be submitted nromptly followine i receint of suonortina information from fuel vendor, I l

6. Important licensing considerations associated with refueling, e.g., new or different feel design or supplier, unreviewed design or performance analysis methods, significant changes in fuel l l

[ design, new operating procedures. See items 4 & 5 above 1

7. Current and projected fuel assemblies inventory:

Number of I Projected date of last Fuel refueling that can be discharged Assemblies (after allowing margin for maintenance of continuous full-core discharge capability) 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 l 2411 200i Licensed Capacky of Spent Fuel Storage Pool (with reracking) i 2829 2006 _

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

4 DOCKET NO: 50-0331 DATE: 03/10/99 Unit: Duane Arnold Enercy Center COMPLETED BY: Richard Woodward TELEPHONE: (3191851-7318 UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH: February 1999 (No power reduction greater that 20% occurred during the month.)

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

(3) 1 - F: Forced 2 - Reason 3 - Method:

S: Scheduled A-Equipment Failure (Explain) 1-Manual J B-Maintenance or Test 2-Manual Scram 1 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) l L

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, DOCKET NO.: 50-0331 DATE: 03/10/99 Unit: Duane Arnold Ene'ev Center

. . COMPLETED BY: Richard Woodwatd l TELEPHONE: f 3191851-7318 Monthly Operational Overview for February 1999 At the beginning of February the DAEC had continuously operated 42 days. On February 20*, the DAEC reduced power at l 23:00 on for turbine valve testing.

' Allocation of Production & 1mses: Dectncal Qtpacity Factor Full Power l Output  % of 565.7 MWe F11uivalent MWe (Design Rating) llours (FPileq) blandby hlter Unit 11U' U2/W 16.59- 2300 OM 6.R'. HW-lurbine Valve lesting:fl2/2023tu-u2/22 0l100 2.35 0.42 % 2.79 Reduced recirculation flow to pull control rods to increase load hne R08 0 01 % RW Average Margin to 1658 MWth Limit Q24 OAl% G28  ;

Suttotal: On-line Capacity Imses 3.20 0.57 % 3.80 MIEisture Separator Reheater Perforrmnce loss l.29 u21% 1.43 .- !

l Feedwater flow nrasurenrnt non]c foubng 2.55 0.45 % 3 02 Other losses, as yet unidentiDed 2.20 R3A 1 62 l Suttotal: On-line EEciency losses 5.95 1.05 % 7.07 1

Begatne (-) M cather Lases (i.e., meather gains, turinre eshaus t )

press ure/conenser inlet temperature < design) - 4.04 - 0.71% - 4.80 l 1otal On-Une Lases l 5.1 I l 0.90 % l 6.07 l Avg. Net Electne Output twhile on-hne) 529.53 93.61 % 629.03 Plant Bectnc loads (while on-line) 31.06 5.49 % 36.90 Total Hectric Generation 560.59 99.10 % 665.93  !

lOtr-Line Lsiplannedimses l l l 0.00 j l

l l Design Hectric Ratmg, Total %,lotal p of clock-hours l 565.70 l 100.00 % l 672.00 l On February 9,1999, during planned maintenance on the "A" train of the Control Room Standby Filter Units (SFU), a small light bulb in the low flow pressure differential switch (PDS) went out. At that time, it was believed this condition would render the train inoperable. During efforts to replace the bulb, it was discovered that the same bulb on the "B" SFU was also not lit. The "B" SFU was declared inoperable and with the "A" SFU already inoperable for the planned maintenance,  !

Technical Specification (TS) 3.0.3 was entered. Plant shutdown was commenced, but was halted at approximately 80% l power after the "B" SFU was repaired and TS 3.0.3 exited. Review of the event after the TS 3.0.3 entry and exit indicated that the burned out PDS bulbs did not render the SFU trains inoperable, and the safety functions could have been achieved in i l

the as-found condition. Therefore, the actual ar.d potential consequences of this event were mininial. (LER # 1999 - 003)

On February 22, the "B" Standby Gas Treatment (SBGT) subsystem was undergoing its 10-hour monthly surveillance testing when it was discovered that the flow indicating controller (FIC5828 A) for the "A" train was not properly displaying flow.

The "A" SBGT subsystem was declared inoperable at 1113 on 2/22/99 while monthly surveillance testing continued on the "B" SBGT subsystem. Repairs were completed on the "A" flow indicating controller coincident with the ongoing surveillance test on the "B" SBGT subsystem. In accordance with the monthly surveillance for shutting down a "B" SBGT subsystem, its mode selector switch was momentarily placed in the manual position at 2045 hours0.0237 days <br />0.568 hours <br />0.00338 weeks <br />7.781225e-4 months <br /> for approximately 15 seconds, which in efTect disabled "B" SBGT from automatically starting, and it was therefore declared inoperable. For those 15 seconds, both SBGT subsystems were considered inoperable which is a condition that could prevent the fulfillment of the safety function of SBGT to control the release of radioactive material. This is considered a 4-hour reportable event per 50.72(b)(2)(iii)(c). (LER # 1999 - 004, pending)

I,icensing Action Summary:

Plant Availability: 100 % Unplanned Auto Scrams (while/ critical) this month: 0 Number of reportable events: 2 Unplanned Auto Scrams (while/ critical)last 12 months: 0 Main Steam Safety and Relief Valve Challenges: 0 t