NG-98-0398, Monthly Operating Rept for Feb 1998 for DAEC

Monthly Operating Rept for Feb 1998 for DAEC

ML20216K009
Person / Time
Site:	Duane Arnold
Issue date:	02/28/1998
From:	Vanmiddlesworth, Woodward R IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:	Beach B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
GL-97-02, GL-97-2, NG-98-0398, NG-98-398, NUDOCS 9803240141
Download: ML20216K009 (7)

Text

,

Du ne Amold Energy Center 3277 DAEC Road Palo, IA 52324 Telephone 319 8517611 Fax 319 8517611 UTILITIES

)

March 13,1998 NG 98-0398 Mr. A. Bill Beach Regional Administrator Region Ill U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, IL 60532-4351

Subject:

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

Dear Mr. Beach:

Please find enclosed the Dtiane Arnold Energy Center Monthly Operating Report fo'r February 1998. The report has been prepared in accordance with the guidelines of NRC Generic Letter 97-02: Revised Contents Of The Monthlv Operating Report, and distribution has been made in accordance with DAEC Technical Specifications, Section 6.11.1.c.

Very truly yours, N Ahd Ja Gary VanMiddlesworth Plant Manager-Nuclear GDV/RBW \ .

Enclosures gM 9803240141 980228 PDR ADOCK 05000331 R PDR

, J .s 0

• An IES Industnes Company

'e

' Mr. A. Bill Beach

-NG 98-0398 March 13,1998 Page 2 of 2

- cc:

U.S. Nuclear Regulatory Commission ' Ms. Lisa Stump

' Attn: Document Control Desk lowa State Utilities Board Mail Station PI-37 ' Lucas State Office 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 0 Street NW, Suite 1100 - 1850 Parkway Place, Suite 720

. Washington, DC 20005 Marietta, GA 30068-8237 Mr. Dennis Murdock = Mr. Dale Arends Central Iowa Power Cooperative Corn Belt Power Cooperative

- Box 2517 130013th Street North Cedar Rapids,IA 52406 Ilumboldt,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 Project Manager 1 Whitellint North NRC Resident Inspector Mail Stop 13E21 11555 Rockville Pike Rockville, MD 20852 r

[ l

, m...

,, OPERATING DATA REPORT

~

DOCKET NO: 50-0331

. DATE: 03/13/98 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPilONE: (319) 851-7318 OPERATING STATUS Average Daily Powrr Level

1. Unit Narrc: Duane Arnold Enercy Ceriter 500

2. Reporting Period: February 1998 t; 400

3. LicensedThermalPower(MWth): 1658 $ 300

4. Nameplate Rating (Gross MW e DER): 565.7 (Turbine) f 200 100

5. Design Electrical Rating (Net MW, DER): 138 3 0

6. Maximum Dependable Capacity (Gross MW e MDC): 150 1 6 11 16 21 26

7. Maximum Dependable Capacity (Net MW, MDC): R0 Day

8. If Changes Occur in Capacity Ratings (Items Number 3 through

7) since the last report, Give Reasons: Not Applicable

9. Power Lev:1 to Which Restricted, if Any (Net Mwe): N_/A

10. Reasons for Restrictions, if Any: N3 February-98 1998 Cumulative

11. Ilours in Repor:ing Period 672.0 1,416.0 202,296.0

12. Number ofliotrs Reactor Was Critical 672.0 1,416.0 156,182.5

13. Reactor Reserve Shutdown klours 0.0 0.0 192.8

14. liours Generat<>r on-Line 672.0 1,416.0 152,565.1

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWil) 1,104,688.8 2,332,005.6 217,038,047.8

17. Gross Electrical Energy Generated (MWil) 376,694.0 796,446.0 72,789,132.6

18. Net Electrical linergy Generated (MWil) 355,584.9 752,016.5 68,323,104.7

' 100.0 % 75.4 %

19. Unit Service Fnctor 100.0 %

20. Unit Availability Factor 100.0 % 100.0 % 75.4 %

21. Unit Capacity Factor (Using MDC Net) 101.8 % 102.1 % 71.1 %

22. Unit Capacity Factor (Using DER Net) 98.4 % 98.7% 68.1%

23. Unit Forced Outage Rate 0.0% 0.0% 9.7%

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of each): Refueling, April 2,1998,45 days

25. If Shutdcwn at End of Report Period, Estimated Date of Startup: N/A 1

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO: 50-0331 DATE: 03/13/98 Unit: Duane Amold Enerav Center

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

MONTH February 1998 Day Average Daily Power Level (MWe-Net) 1 530.6 2 531.1 3 533.5 4 530.4 5 531.8 6 530.7 7 519.9 8 484.1 9 534.8 10 536.4 11 533.5 12 534.8 13 537.3 14 535.6 15 529.1 16 535.9 17 532.8 18 534.0 19 533.2 -

20 527.2 21 512.3 22 522.4 23 530.8 24 532.0 25 526.3 26 527.3 27 533.0 28 535.4 t-.ii . .... ,- .. . .. . . . .. .. . . .. . , . b . , ., i .

i

- REFUELING INFORMATION DOCKET NO: 50-0331 DATE: 03/13/98 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318

1. Name of facility. Duane Arnold Enercy Center

2. Scheduled date for next refueling shutdown. April 2.1998

3. Scheduled date for restart following refueling. May 17.1998

4. Will refueling or resurnption of operation thereafter require a technical specification change orotherlicense amendment? y_es RTS 296 proposes fuel discharge as early as 60 hours6.944444e-4 days <br />0.0167 hours <br />9.920635e-5 weeks <br />2.283e-5 months <br /> after shutdown (versus current 120 hour0.00139 days <br />0.0333 hours <br />1.984127e-4 weeks <br />4.566e-5 months <br /> requirement).

RTS 298 proposes reducing restrictions for Standyby Liquid Control System Operability requirements.

RTS 299 proposes allowing perfonnance of Reactor Vessel Hydro without changing reactor mode.

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

RTS 296, " Refueling Operations" submitted October 3,1997.

RTS 298," Standby Liquid Control Operability Requirements" submitted February 3,1998.

RTS 299, " Vessel liydrostatic Pressure and Leak Testing Operability Requirements", submitted February 3, 1998.

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. N/A

7. Current and projected fuel assemblies inventory:

Number of Projected date of last Fuel refueling that can be discharged Assemblies (after allowing margin for maintenance of continuous full < ore discharge capability)

Installed in reactor core 368 n/a Fresh fuel to be installed into the core during April 1998 refueling 120 n/a Previously discharged from core to Spent Fuel Storage Pool 1528 n/a Discharged from core to Spent Fuel Storage Pool 1648 n/a following April 1998 refueling 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: 50-0331 DATE: 03/13/98

+ Unit: Duane Arnold Enerav Cente_r COMPLETED BY: . Richard Woodward TELEPHONE: (319)851-7318 UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH: February 1998 (There were no power reductions >20% 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 B-Maintenance or Test 2-Manual Scram C-Refueling 3-Automatic Scram D-Regulatory Restriction 4-Continued E-Operator Training A License Examination 5 Reduced Load F-Administrative 9-Other (Explain)

G-Operational Error (Explain)

H-Other (Explain)

..g. . .. . . . . . . . . _ . .

p .

o DOCKET NO.: 50-0331 DATE: 03/13/98 Unit: Duane Arnold Enerev Center COMPLETED BY: Richard Woodward TELEPlIONE: (319) 851-7318 Monthly Operational Overview for February 1998 During the month of February the DAEC averaged 99.1% capacity, operating at or near its 1658 MW. full-thermal-power licensed limit, except for the following capacity losses:

e 02/01 15:15 - 16:50, reduced recircu!ation flow to pull control rods and increase load-line (rod-pull),0.09 FPil,,

e 02/03 20:28 - 02/04 03:04, maintenance on the Plant Process Computer (PPC) system,0.09 FPif y (unplanned) e 02/04 03:04 - 02/07 21:05, to maintain margin to thermal limhs while deferring scheduled sequence exchange to coincide with planned weekend downpower (thermal power declined from 1648 to 1632 MW.),0.56 FPlfy e 02/07 21:05 - 02/0810:00, sequence exchange, turbine control valve testing,2.50 FPily e 02/09 23:30 - 02/10 00:22, rod-pull,0.05 FPIly e 02/11 10:15 - 13:00, High Pressure Coolant Injection (llPCI) quarterly operability testing,0.08 FPity e 02/1317:40 - 17:56, post-maintenance llPCI testing,0.01 FPily (unplanned)

= 02/19 23:30 - 02/20 01:22, rod-pull,0.27 FPIly

. 02/21 19:02 - 02/22 09:38, to insert rod 26-39 full-in for maintenance, and to hold for Xenon transient to move power,0.85 FPily(unplanned) e 02/2412:30 - 14:05, reduced to 98% thermal power for PPC troubleshooting after receiving numerous (spurious)

Average Power Range Monitor (APRM) computer comparison alarms,0.03 FPily (unplanned)

= 02/26 22:30 - 23:29, rod-pull,0.06 FPIl y Also during the month the DAEC incurred the following unplanned efficiency losses:

e 02/01 - 02/0412:00, continuation of 3MW, efliciency loss (stuck first stage moisture separator reheater drain tank level controller) which had begun January 23,0.40 FPIly e 02/13 - 02/28, average 2% MW, loss resulting from fouling of the feedwater flow measurement nozzle, effectively reducing actual" full" thermal power from as-indicated 1658 MW. (the licensee limit) to 1650,1.47 FPH, Weather-related gains (seasonal boosts in plant output related to winter-time condenser inlet temperatures, accounted for as negative losses) offset 3.2 FPIlyof these losses. Within-tolerance measurement discrepancy between indicatedpower and metered energy,0.4% (accounted for as an efficiency loss), takes up the residual. Total losses (netting in the weather-related gains in plant output) equated 6.2 FPily out of the available 672 clock hours during the month.

At the end of February the DAEC had continously operated 168 consecutive days.

Allocation of Production & Losses: Liectncal Capacity I actor Full Power Output  % of 565.7 MWe Equivalent MWe (Design Rating) llows (FPileq)

Actual Metered Net Electric output 529.1 93.5 % 628.5 Actual Metered Plant Electric loads 31.4 5.6% 37.3 OffE).jne Capacity Losses: 00 0.0% 0.0 on-1ine Unplanned Capacity Losses: 1.3 0.2% 1.5 Normal Capaelty Losses (Avg."Fullfower" MWth < 1658) 04 0.1% 0.5 On-t ine flanned Capacity losses 2.3 04% 2]

(neg ) Weather losses - condenser pressure <2.75 in lig / Circ Water Ternp < 74.5 "F -2.7 -0.5% -3.2 Unplanned CWciency Losses (Weather-Norm-Full-Power-MWe > 565.7 Design) l .5 0.3% l .h hfetering (Avg trubcated powr MWe Avg metered energy MWIic) 24 0.4% 2.4 Excluded losses (coast-down, lack of grid dernand, etc.) 00 00% 00 Design Gross Electric output LQ2 100 0 % g22J,!

(There were no Licensee Event Reports.)

Licensine Action Summary:

I Plant Availability: 100.0 % Unplanned Auto Scrams (while/ critical) this month: 0

- Number of reportable events: 0 Unplanned Auto Scrams (while/ critical)last 12 months: 0 Safety Relief Valve Challenges: 0-

. . .. .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .