ML20045H380

Monthly Operating Rept for June 1993 for DAEC.W/930715 Ltr

ML20045H380
Person / Time
Site:	Duane Arnold
Issue date:	07/15/1993
From:	Denise Wilson, Woodward R IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NG-93-2885, NUDOCS 9307200147
Download: ML20045H380 (6)

Text

,, . - -

s..

o. -

.t' 4

lowa Electric Light and Power Company  ;

7 July 15,1993 ~

NG-93-2855 Mr. John B. Martin '

Regional Administrator Region 111 U.S. Nucicar Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137  !

Subject:

Duane Arnold Energy Center ,

Docket No: 50-331 Operating License DPR-49 June 1993 Monthly Operating Report

Dear Mr. Martin:

i Please find enclosed the Duane Arnold Energy Center Monthly Operating Report for June 1993. The report has

, been prepared in accordance with the guidelines of NUREG-0020 and distribution has been made in accordance with DAEC Technical Specifications, Section 6.11.1.c.

Very truly yours,

[. I David Wilson Plant Superintendent, Nuclear DLW/RBW/cc Enclosures File A-ll8d  :

cc  !

Dir. of Nuclear Reactor Regulation Mr. Dennis Murdock U.S. Nuclear Regulatory Commission Central lowa Power Cooperative Mail Station PI-137 Box 2517 Washington, D.C. 20555 (Orig.) Cedar Rapids, IA 52406 Mr. Robert Pulsifer Mr. William Loveless Project Manager U.S. NRC 1 Whitenint North I Whiteflint North

• Mail Stop 13E21 Mail Stop 11C14 11555 Rockville Pike 11555 Rockville Pike ,

Rockville, MD 20852 Rockville, MD 20852 (2)

Document Control Desk Dr. William A. Jacobs, Jr.

INPO Records Center GDS Associates,Inc.

• 1100 Circle 75 Parkway Suite 720 ME Suite 1500 1850 Parkway Place

'*$', Atlanta, GA 30339-3064 Marietta, GA 30068-8237 O

t o Mr. Steve Brown ' Mr. Dale Arends 8' lowa State Utilities Board

• O 1,ucas State Office Building Corn 130013th Belt Power Street Nort Coohcrative St Des Moines,IA 50319 . Humboldt, IA 50548 to

• O Mr. Fred Yost DCRC

.N rd :

Director. Research Services Utility Data Institute NRC Resident Inspector gg 1700'K St. NW Suite 400

.I no Washington, DC 20006 Duane Arnold Energy Center

• 3277 DAECllood

• Polo, Iowa 52324

• 3t91851-m11 \

200006

4 e

OPERATING DATA REPORT DOCKET NO: 50-011 DATE: (i7 71 9.

Unit: loane Arnold Enerav Cente.t COMPLETED BY: lichard Woodward TELEPHONE: (319) 851-7318 OPERATING STATUS

1. Unit Name: Quane Arnold Encray Center

2. Reporting Period: June 1993 ,

3. Licensed Thermal Power (MWt): 1658 - Notes

4. Nameplate Rating (Gross MWe): 565 frurbin_ej

5. Design Electrical Rating (Net MWe): 13 8

6. Maximum Dependable Capacity (Gross MWe): 145_

7. Maximum Qcpendable Capacity (Net MWe): 515

-8. If Changes Occur in Capacity Ratings (1tems Number 3 through 7) since the last report, Give Reasons: 14/A

9. Power Level to Which Restricted, If Any (Net MWo): 82% (averate for month of Jun_q)

10. Reasons for Restrictions, if Any: Thermal power c.spability has decreased slinhtly more than 0.2% 0.gr day singg_the onset of coast-down April 5.1993.

This Month Year-to-Date Cumulative

11. Hours in Reporting Period 720.0 4,343.0 161,399.0

12. Number of Hours Reactor Was Critical 720.0 4,218.1 120,199.3

13. Reactor Reserve Shutdown Hours 0.0 0.0 192.8

14. Hours Generator On-Line 720.0 4,203.1 117,225.6

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 992,049.2 6.541,987.0 160,625,280.7

17. Gross Electrical Energy Generated (MWH) 324,746.0 2,176,189.0 53,801,098.5

18. Net Electrical Energy Generated (MWH) 302,610.0 2,045,379.5 50,442,033.3

19. Unit Service Factor 100.0 % 96.8% 72.6 %

20. Unit Availability Factor 100.0 % 96.8 % 72.6 %

21. Unit Capacity Factor (Using MDC Net) 81.6 % 91.4 % 62.1 %

22. Unit Capacity Factor (Using DER Net) 78.1 % 87.5 % 59.4%

23. Unit Forced Outage Rate 0.0% 0.0% 12.1 %

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of each): Refueling, July 29,1993, 59 days.

25. If Shutdown at End of Report Period, Est. Date of Startup: N/A t

.. .a

, 4 r ,

. ~

. AVERAGE DAILY UNIT POWER LEVEL DOCKET NO: 50-0331 DATE: 07/15/93 Unit: Duane Arnold Enercy Center -

COMPLETED BY: Richard Woodward TELEPlIONE: (319) 851-7318 MONTil June 1993 Average Daily Average Daily Power Level Power Level Day (MWe-Net) Day (MWe-Net) 1 448 3 16 421.7 2- 446.1 17 412.2 3- 440.5 18 413.6 4 444.2 19 410.9 ,

5 445.0 20 413.2 6 437.2 21 411.1 7 112f(t 22 408.3 8 428.6 23 403.9 9 ilf1(t ' 24 403.4 ,

t 10 132_0 25 407.0 I

11 121 2 26 403 7 12 4131

. 27 iQL3.

13 420 9 28 400.9 14 4216 29 3986 15 425.3 30 398.4 6

I i

1

s REFUELING INFORMATION DOCKET NO: 50-0331 DATE: 07/15/93 Unit: Duane Amold Enemy' Center

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

1. Name of facility.

Duane Arnold Energy Center

2. Scheduled date for next refueling shutdown.

July 29,1993

3. Scheduled date for restart following refueling.

September 26,1993

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

Received Amendment #192, no further change needed

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

Not applicable

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 opeinting pmcedures.

No

7. The number of fuel assemblies (a) in the core,(b) in the spent fuel stoinge pool , (c) new fuel on the re-fuel floor,

a. 368

b. 1152

c. 128

8. The present licensed spent fuel pool stoinge capacity and the size of any increase in licensed storage capacity that has been requested or is planned,in number of fuel assemblics.

a. 2050 - Licensed Capacity or

b. 1898 under the presently installed storage rack capacity.

c. 3152 requested by RTS#252, submitted March 26,1993 i i

9. The projected date of the last refueling that can be discharged to the spent fuel pool assuming ,

the present licensed capacity. -

a. 2000 - Licensed Capacity or

b. 1998 under the presently installed storage rack capacity.

i

DOCKET NO: 50-0331 .,

DATE: 07/15/93 Unit: Duane Amold Enercy Center COMPLETED BY: Richard Woodward TELEPIIONE: (319) 851-7318 n

UNIT SliUTDOWNS AND POWER REDUCTIONS

. REPORT MONTH: June 1993 There were no shutdowns or power reductions in excess of 20% during the month.

No. Date type Duration Reason Method of Licensee Event System . Comp. Cause (1) (Hours) (2) Shutting Report # Code Code i Down (4) (5)

Reactor (3)

N/A 1 - F: Forced 2 - Reason: 3 - Method: 4 - Exhibit G-S: Scheduled A-Equipment Failure (Explain) 1-Manual Instructions for Preparation of Data Entry B-Maintenance or Test 2-Manual Scram Sheets for Licensee Event Report (LER) File -

C-Refueling 3-Automatic Scram (NUREG-0161)

D-Regulatory Restriction 4-Continued ,

E-Operator Training & License 5-Reduced Load 5 - Exhibit 1 Examination 9-Other (Explain) (Same Source)

F-Administrative G-Operational Error (Explain)

Il-Other (Explain

_. . . . . s _ _ . - . , _ . -

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

4. ,-

o 6 4 -3, .

"(i DOCKET NO.: 50-033)

. DATE: 07/15/93-Unit: Duane Arnold Enerav Center l COMPLETED BY: Richat _d woodward TELEPIIONE: (319) 851-7318 Monthly Operational Overview for June 1993:

At the beginning of June the DAEC had coasted down to 87% of licensed thermal power.

The core has been in "all-rods-out" configuration since April 5. The plant operated at - 1 uniformly decreasing power capability throughout the month, briefly reducing electric output by 5? MWHe on June 27 to perform Turbine Valve Surveillances. By the end of June, power level had coasted-down to 79%. The coast-down will continue until the refueling outage, now scheduled to commence July 29. l The following table summarizes June plant operation and categorizes production losses in terms of average MWe, capacity factor, and full power equivalent hours. -i Average Capacity Equivalent Full-MWe Factor Power Hours Surveillance losses, control rod movements, etc. 0.1 0.0% 0.1 Seasonal Losses 5.4 1.0% 6.9  ;

Losses due to degraded heat rate 4.9 0.9% 6.2  ;

Other Losses 3.9 0.7% 5.0 Coast-down 100.4 17.7 % 127.8 Actual Gross Electric output 45_LO . 79.7% ' iLLQ Design Gross Electric Output 565.7 100.0 % 720.0 On June 11,1993, with the plant operating at 85% power, while performing the Emergency Diesel Generator (EDG) operability surveillance, the 'A' EDG tripped approximately three seconds after the initial start signal. The most probable cause was determined to be a partially latched mechanical trip mechanism, although this condition was not able to be recreated during troubleshooting efforts. Corrective actions for this event include procedural enhancements, redundant reset operations, and engine stand improvements to facilitate ,

efficient operation of the reset lever. (LER 93-04)

Licensinn Action Summary:

Plant Availability; 100.0 % Unplanned Auto Scrams (w/ Critical) this month: 0 ,

Number of reportable esents: 1 Unplanned Auto Scrams (w/ Critical)last 12 months:2 i

=!

i