NG-99-0020, Monthly Operating Rept for Dec 1998 for Daec.With

Monthly Operating Rept for Dec 1998 for Daec.With

ML20199E750
Person / Time
Site:	Duane Arnold
Issue date:	12/31/1998
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-99-0020, NG-99-20, NUDOCS 9901210073
Download: ML20199E750 (7)

Text

. _ _ - - . . _ _ _ . - _ _ _ _ . . . _ _ _ _ . _ . _ . _ . ~ . _ . . _ _ _ _ __ _

.e. .

W g UTILITIES ALLI ANT tr.s veihiie,inc.

Duane Arnold Energy Center IES Utilities . 32n DAEC Road Palo, IA $2324-9785 8 Oflice: 319.851.761i Fax: 319.85L7986 www.alhant-energy.com i

NG 99-0020 l,

Mr. James E. Dyer

' Regional Administrator RegionIII U.S. Nuclear Regulatory Commission 801 Warrenville Road i

Lisle,IL 60532-4351

~ .

l +

)

Subject:

Duane Arnold Energy Center DocketNo: 50-331 l Operating License: DPR-49 l December 1998 Monthly Operating Report l File: A-118d l

Dear Mr. Dyer:

Please find enclosed the Duane Arnold Energy Center Monthly Operating Report for December 1998. The ieport 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 niade in accordance with DAEC Technical Specifications, Section 5.6.4.

Very truly yours, l

. & .sc c Gary VanMiddlesworth .

Plant Manager-Nuclear

- GDV/RBW i

Enclosums I

l l I

i' .. ' rg a

9901210073 981231 '1 l PDR ADOCK 05000331*

l ,' R PDR i

~'. .

.?

Mr. James E. Dyer NG 99-0020 January 15,1999 Page 2 of 2 cc:

/U.S. Nuclear Regulatory Commission Ms. Lisa Stump i Attn: Document Control Desk lowa State Utilities Board Mail Station 0-PI-17 Lucas State Office Building Wa hington, DC 20555-0001 (Orig.) Des Moines,IA 50319 Ms. Barbara Lewis Dr. William A. Jacobs, Jr.

McGraw-Hill, Inc. GDS Associates,Inc. '

. 1200 G Street NW, Suite 1100 1850 Parkway Place, Suite '720 l, Washington, DC 20005 ' Marietta, GA 30068-8237 Mr. Dennis Murdock Mr. Dale Arends L CentralIowa Power Cooperative Corn Belt Power Cooperative Box 2517 130013th Street North Cedar Rapids,IA 52406 Humboldt,IA 50548

' Document Control Desk Mr. Al Gutterman INPO Records Center Morgan, Lewis, Bockius 700 Galleria Parkway 1800 M St. NW Atlanta, GA 30339-5957 Washington, DC 20036-5859 Mr. Rich Laufer DOCU i- Project Manager

.1 White Flint North NRC Resident Inspector Mail Stop 13E21 11555 Rockville Pike CTS Project ,

Rockville, MD 20852 l L

l I

.-q

g e ,M> + . .c- .,. -  %. -3 ., - .c,a. %,. -,

. _- - - - . . . . - . . - - = - - - - . - -_._. --. .- .

i .. ,

l i \

l 1

OPERATING DATA REPORT i

DOCKET NO

50-0331 DATE: 01/15/99 i Unit: Duane Arnold Enerev Center j COMPLETED BY: Richard Woodward j TELEPliONE: (319) 851-7318 OPERATING STATUS

.. .. n.ao ., t...i w.

1. Unit Name: Duane Arnold Energy Center op

2. Reponing Period: December 1998 4n.

3. Licensed Thermal Power (MWth): 1658 5, 4 j 4. Nameplate Rating (Gross MWe DER): 565.7 (Turbine) ,,,

. t--

1 5. Design Electrical Rating (Net MWe DER): 138 .

i . n i. n a n

6. ~ Maximum Dependable Capacity (Gross MWe MDC)

150,

7. Maximum Dependable Capacity (Net MW, MDC):120 l j 8. If Changes Occur in Capacity Ratings (Items Number 3 through 7) since the last repon, Give Reasons: Not Apr>l1 cable

9. Power Level to Which Restricted, if Any (Net MW ):e N/A

10. Reasons for Restrictions, if Any:N_/Ai December-98 1998 Cumulative i1. Ilours in Reponing Period 744.0 8,760.0 209,640.0

12. Number ofliours Reactor Was Critical 645.6 7,582.3 162,348.8

13. Reactor Reserve Shttdown liours 0.0 0.0 192.8

14. liours Generator On-Line 627.9 7,479.1 158,628.2

15. Unit Reserve Shutdown Ilours 0.0 0.0 0.0

16. Gross Thennal Energy Generated (MWil) 992,700.3 12,141,747.1 226,847,789.3

17. Gross Electrical Energy Generated (MWii) 334,637.0 4,067,640.0 76,060.326.6

18. Net Electrical Energy Generated (MWil) 315,959.3 3,839,157.3 71,410,245.5

19. Unit Service Factor 84.4 % 85.4 % 75.7 %

20. Unit Availability Factor 84.4 % 85.4 % 75.7 %

21. Unit Capacity Factor (Using MDC Net) 81.7 % 84.3 % 71.6 %

22. Unit Capacity Factor (Using DER Net) 78.9 % 81.5 % 68.6 %

23. Unit Forced Outage Rate 15.6 % 1.5% 9.4%

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

25. If Shutdown at End of Repon Period, Estimated Date of Startup: N/A

-

• AVERAGE DAILY UNIT POWER LEVEL l DOCKET NO: 50-0331 DATE: 01/15/99 Unit: Duane Arnold Enercy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 MONTH December 1998 Day Average Daily l

Power Level (MWe-Net) 1 528.3

2 525.7 3 523.7 4 521.2 5 524.3 6 532.0 7 535.5 8 535.2 9 533.6 10 531.3 11 533.4 12 532.9 13 503.5 14 505.5 15 30.2 16 0.0 17 0.0 18 0.0 19 0.0 20 87.5 21 402.3 22 478.3 23 527.4 24 532.8 25 508.4 26 532.4 27 532.5 28 534.4 29 534.7 l 30 533.9 31 533.6 I

I

1

. I

o. -

)

I t

REFUELING INFORMATION DOCKET NO: 50-0331 DATE: 01/15/99 Unit: Duane Amold Enercy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318

1. Name of facility. Duane Arnold Enerev Center

2. Scheduled date for next refueling shutdown. October 8.1999

3. Scheduled date for restart following refueling. November 13.1999 I

l

4. Will refueling or resumption of operation thereafter require a technical specification change or other license amendment? Yes-(a) Technical Snecification chance to support storace of new l l

GE12 fuel desien in the spent-fuel pool. (b) Technical Specification chance to sunnort reactor operation with new GE12 fuel desien.

I l

5. Scheduled date(s) for submitting proposed licensing action and supporting information. 1 (a) January 31.1999 (b) will be submitted promptly followine receint of suonortine information from fuel vendor.

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. See items 4 & 5 above j l

7. Current and projected fuel assemblies inventory:

Number of Projected date oflast Fuel refueling that can be discharged Assemblics (after allowing margin for maintenance of l continuous full-core  !

discharge capability)

Installed in reactor core 1 368 N/A Previously discharged from core to Spent Fuel Storage Pool [ 1648 N/A Installed Capacity of Spent Fuel Storage Pool i 2411 2001 Licensed Capacity of Spent Fuel Storage Pool (with reracking) 3 2829 2006 Licensed Capacity of Spent Fuel Storage Pool and Cask Pool (with 3152 2010 reracking) _

_ . = . - . . _ . . -. _ _ ~ . - _- . - - . . - . . - . - . . - _ , . . - - . . - - - . - . - . - . . _ _ . - . . = . -

~ ~

e, 8

DOCKET NO: 50-0331 -

DATE: 01/15/99 I Unit: Duane Arnold Enerev Center I COMPLETED BY: Richard Woodward l TELEPilONE: (3191 851-7318

]

l l

UNIT SHUTDOWNS AND POWER REDUCTIONS I REPORT MONTH: December 1998 l l

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

l (3)

! 6 12/15/98 F 116.15 A 1 Weld repair of a I I

.feedwater heater bypass piping leak l

l i

l l

l

- 1 - F

Forced 2 - Reason 3 - Method:

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

C-Refueling 3-Automatic Scram D-Regulatory Restriction 4-Continued  ;

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

i  !

! G-Operational Error (Explain)

H-Other (Explain) .j i

l l +

1 t

.- __- _ . . . . ,- - . . . ~ _ . - - . _ . - - - . . - .

a, ,

6 DOCKET NO.: 50-0331 DATE: 01/15/99 Unit: Duane Amold Enerav Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 351-7318 Monthly Operational Overview for December 1998 At 09:03 on December 15*, after having continuously operated 207 days, the DAEC shutdown to perform a weld repair of a feedwater heater bypass piping leak. The generator was synchronized to the grid at 06:02 December 20* following the repair. The plant was offline 116 hours0.00134 days <br />0.0322 hours <br />1.917989e-4 weeks <br />4.4138e-5 months <br />,9 minutes and sub-critical 98 hours0.00113 days <br />0.0272 hours <br />1.62037e-4 weeks <br />3.7289e-5 months <br />,27 minutes. Including shutdown and startup, the total production loss associated with the forced outage was 145.8 full-power-equivalent hours.

Allocation of Production & Losses: Electncal Output Capacity Iactor Full Power MWe  % of 565.7 MWe Equivalent Hours (Design Rating) (FPHeq)

Plant Process Computer maintenance : 12/2710:01 - 15.43, 12/29 16:00 23:00, 0.08 0 01 % 0.09 12/30 22:21- 12/31 01:58 1urbine Valve lestmg: 12/12 23:00 - 12/14 02:00 1.23 0.22 % 137 On-line Unplanned Losses: 12/14 20:04 12/15 09:53,12/20 06:02 - 12/25 12:00, 26.25 4.64 % 29.13 12/25 23:26-12/26 01:27,12/26 10:52 -12:30 Reduced recirculation flow to pull control rods to increase load ime (Rod Pull): 12/30 0.02 0.00 % 0.02 10:40 12.50 Average Margin to 1658 MWth Limit o 13 0 02 % 0 15 buhtotal: On-hne Capacity Losses 27.71 4.90 % 30.75 Y Moisture Separator Reheater Performance Loss 1.20 0.21 % 1.33 Feedwater flow measurement nozzle foulmg 339 0.60 % 3.77 Other Losses, as yet unidentif,cd 3 Ii 0 55 % 3 47 bubtotal: On-line Efnciency Losses 7.71 1.36 %

y 8.57 Negative (-) v,cather Losses (i.e weather gains. turbine eshaust - 2.70 - b.48% - 3.00 pressure / condenser inlet temperature < design) l lotal On-line Losses l 32.71 l

5."18 %

l M l Avg. Net Electnc Output (while on-ime) 503.24 88.96 % 558.13 l

Plant Electric Loads (while on-ime) 29 75 526% 33 40 Total Electric Generation 532.99 94.22 % 29M}

l Oti-Line 1)nplanned Losses: 12/15 09:53 12/20 06:02l 116.15 l l l l l Design Liectric Rating,l otal %. lotal # of clock-hours l 565.70 l

100.00 %

l g l l

l There were no Licensee Event Reports.

Licensine Action Summarv:

i 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

l Main Steam Safety and Relief Valve Challenges: 0 t

i i

u e

l

, -,