NG-98-1389, Monthly Operating Rept for July 1998 for DAEC

Monthly Operating Rept for July 1998 for DAEC

ML20237B570
Person / Time
Site:	Duane Arnold
Issue date:	07/31/1998
From:	Vanmiddlesworth, Woodward R IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:	Caldwell J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
GL-97-02, GL-97-2, NG-98-1389, NUDOCS 9808190048
Download: ML20237B570 (7)

Text

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - _

e u '

ALLI ANT

~

UTIL! TIES ins utisiae. inc.

^ "'"

IES Utilities T8 374",DA Palo IA 52324-9785 August 14,1998 Ofhce 319.851.7611 Fax: 319.851.7986 www.alliant-energy.com

~ NG 98-1389 Mr. James L. Caldwell Regional Administrator (acting)

Regim : '

U.e Nucle z Regulatory Commission 801.%Tenville Road Lisle, IL 60532-4351

Subject:

Duane Arnold Energy Center Docket No: 50-331 Operating License: DPR-49 July 1998 Monthly Operating Report File: A-118d

Dear Mr. Caldwell:

l Please find enclosed the Duane Arnold Energy Center Monthly Operating Report for July 1998.

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,

/4 ..

s/ --

)'

Gary VanMiddlesworth Plant Manager-Nuclear g GDV/RBW - h Enclosures l

1 I 9808190048 DR 9807317 ADOCK 05000331 )

PDR t

L--_____-__----__._.--__--_____-.__-___.--_.-__-___ - - _ - _ _ _ - _ _ _ _ _ . - _ _ . _ _ _ _ _ _ _ ._- _-.._.- . _ _ _ _ __-_..--._-.._.-___L

s Mr. James L. Caldwell

NG 98-1389 August 14,1998 Page 2 of 2 -

cc:

U.S

Nuclear Regulat6ry Commissioner Ms. Lisa Stump Attn: Document Control Desk lowa State Utilities Board Mail Station 0-Pl-17 Lucas State Oflice Building Washington, 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 Washington, DC 20005 Marietta, GA 30068-8237 Mr. Dennis Murdock Mr. Dale Arends 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 1

.700 Galleria Parkway 1800 M St.N W Atlanta, GA 30339-5957 Washington, DC 20036-5859 Mr. Rich Laufer DOCU Project Manager 1 White Flint North NRC Resident Inspector Mail Stop 13E21 11555 Rockville Pike CTS Project Rockville, MD 20857 l

I

s i 't ~

OPERATING DATA REPORT j DOCKET NO: 50-0331 DATE: 08/14/98 Unit: Duane Arnold Energy Center f COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 i

OPERATING STATUS l Average Daily Power Level I

, Unit Name: Duane Arnold Enerav Center 500 L Reporting Period: Juiv 1998 400 t

3. LicensedThermalPower(MW ):th 16.58 T 300

4. Nameplate Rating (Grosse MW DER): 565.7 (Turbine) is 2 200

5. Design Electrical Rating (Net MW, DER): j.38 100 5

6.

Maximum Dependable Capacity (Gross e MW MDC): j50 0

Maximum Dependable Capacity (Nete MW MDC): $2p 1 6 11 16 21 26 31 7.

Day 8.

If Changes Occur in Capacity Ratings (Items Number 3 through 7) since the last report, Give Reasons: Not Annlicable 9.

Power Level to Which Restricted, if Any (Net Mw ):e M%

10.

Reasons for Restrictions,if Any: MS 1998' Cumulative July-98 5,087.0 205,967.0 744.0

11. Ilours in Reporting Period 744.0 4,007.8 158,774.3

12. Number of Hours Reactor Was Critical 0.0 0.0 192.8

13. Reactor Reserve Shutdown Hours 3,922.2 155,071.3 744.0

14. Hours Generator On-Line 0.0 0.0 0.0

15. Unit Reserve Shutdown llours 6,311,606.4 221,017,648.6 1,221,004.8

16. , Gross ' Thermal Energy Generated (MWH) 2,113,399.0 74,106,085.6 403,261.0

17. ' Gross Electrical Energy Generated (MWH) 380,416.9 1,993,405.3 69,564,493.5

18. Net Electrical Energy Generated (MWH) 100.0 % 77.1 % 75.3 %

19. Unit Service Factor 77.1% 75.3 %

100.0 %

20. Unit Availability Factor 98.3 % 75.4 % 71.0%

21. Unit Capacity Factor (Using MDC Net) 95.0 % 72.8% 68.1 %

22. Unit Capacity Factor (Using DERNet) 0.0%. 0.0% i 9.6%

23. . Unit Forced Outage Rate 24.

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

EM If Shutdown at End of Report Period, Estimated Date of Startup:

25.

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

DATE: 08/14/98 Unit: Duane Arnold Enercy Center

.,, .s COMPLETED E/: Richard Woodward TELEPHONE: (319) F51-7318 MONTH July 1998 Day Average Daily Power Level (MWe-Net) 1 520.4 2 521.8 3 515.3 4 518.7

! 5 521.0 6 512.1 7 511.4

! 8 516.0 9 514.1 10 515.0 11 518.8 l 12 517.9 13 517.8 14 516.2 15 515.3 16 517.2 17 517.8 l.'

18 378.4 19 505.9 20 508.9 21 512.4

! 22 513.7 23 514.9 24 500.5 25 520.5 26 519.7 27 514.1 ,

28 514.6 29 520.4 b 30 520.0 .

31 519.9 1

l

? ' REFUELING INFORMATION l DOCKET NO: $0-0331

\ DATE: 08/14/98 f Unit: Duane Arnold Enerev Center l COMPLETED BY: Richard Woodward l

TELEP1IONE: {319) 851-7318 1.

Name of facility, puane Arnold Enercy Center 2.

Scheduled date for next refueling shutdown. October 8.1999 3.

Scheduled date for restart following refueling. November 13.1999 ification change 4.

Will refueling or resumption of operation thereafter require a technical or otherlicense amendment? N_g i information.hi!/A 5.

Scheduled date(s) for submitting proposed licensing action and suppor different fuel design 6.

Important licensing considerations i associated with refueling, e.g., new or supplier, unreviewed design or performance analys s me design, new operating procedures. N_/A Projec5 Iate oflast 7.

s ...ent and projected fuel assemblics inventory:Numberof f refueling that can W .'.;.,Uarged F~ Fuel (after allowing margin for Assemblies maintenance of continuous full-core discharge capability)

N/A ~

~I 368 N/A [

l 1648 ._

Installed in_ reactor core 2001 StorageEPool Previously discharged from core to Spent Fuel l_ 2411 2006 Installed Capacity of Spent Fuel Storage Pool 2829 l 2010 Licensed Capacity of Spent Fuel Storage Pool (with reracking) 3152 a Licensed Capacity of Spent Fuel Storage Pool and Cask Pool (with '

reracking)

- ~ _ _ _ _ _ _ _ _ _

DOCKET NO: 50-0331 DATE: 08/14/98 Unit: Duane Arnold Enercy Center COMPLETED BY: Richard Woodward TELEPIIONE: (319) 851-7318 UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH: July 1998 No. Date Type Duration Reason Method of Licensee Cause (1) (Hours) (2) St utting Event Down Reactor Report #

(3) 4 7/17/98 S 36.0 B 5 Control Rod Sequence (6.3 Full- Exchange 7/19/98 Power-flours ,

Equivalent) 1 - 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 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)

\ . .

.~

DOCKET NO.: 50-0331 DATE: 98/14/98 Unit: Duane Arnold Energy Center i '

COMP' ETED BY: Richard Woodward TELEPHONE: (3191 851-7318 Monthly Operational Overview for July 1998 During the month of July, the DAEC operated at its 1658 MW. licensed limit except for the following departures from full power:

Allocation of Production and Losses Electric Capacity Factor Full Power Output MWe  % of 565.7 MWe Equivalent (Design Rating) Hours (FPilea)

Plant Process Computer maintenance,07/12 08:56 15:57 0.2 0.0% 0.2 Control Rod Sequence Exchange,07/17 23:12 - 07/1911:10 4.8 0.9% 6.3 Reduced recirculation flow to pull control rods to increase load line (Rod Pull), 0.1 0.0% 0.1 07/20 00:00 01:15 Maintenance on Stop Valve 2,07/23 22:00 07/24 07:00 0.7 0.1% l.0 Average Margin to 1658 MWthLimit 0.2 0.0% 0.2 Subtotal: Capacity Losses 5.9 1.0 % 7.8

'B' Moisture Separator Reheater Pert'ormance Loss 1.2 0.2% 1.6 Feedwater flow measurement nozzle fouling 3.0 0.5% 3.9 Other Losses, as yet unidentified 3.5 0.6% 4.6 Subtotal: Efficiency Losses 7.7 1.3 % 10.0 l Weather Losses l 10.1 l 1.9 % l 13.3 l l Total Losses l E 2 l E 4 l 3E l Net Electric Output 511.3 90.4 % 672.5 Plant Electric Loads (while on-line) 30.7 5.4% 40.4 Total Electric Generation 542.0 95.8 % R 7

l Design Electric Rating Total %, Total # of clock-hours l 565.7 l 100 0 % l 744.0 l (There were no Licensee Event Reports during the month.)

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 j Main Steam Safety and Relief Valve Challenges: 0 j 1

l 1

i

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . . _ _ _ . . . - . . --.-